./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.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_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/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 b6943849e6f46346ed71c5d8e09de50318fefe6a ............................................................................................................................................ 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_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/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 b6943849e6f46346ed71c5d8e09de50318fefe6a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:38:10,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 15:38:10,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 15:38:10,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 15:38:10,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 15:38:10,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 15:38:10,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 15:38:10,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 15:38:10,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 15:38:10,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 15:38:10,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 15:38:10,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 15:38:10,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 15:38:10,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 15:38:10,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 15:38:10,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 15:38:10,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 15:38:10,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 15:38:10,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 15:38:10,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 15:38:10,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 15:38:10,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 15:38:10,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 15:38:10,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 15:38:10,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 15:38:10,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 15:38:10,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 15:38:10,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 15:38:10,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 15:38:10,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 15:38:10,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 15:38:10,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 15:38:10,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 15:38:10,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 15:38:10,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 15:38:10,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 15:38:10,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 15:38:10,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 15:38:10,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 15:38:10,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 15:38:10,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 15:38:10,807 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 15:38:10,825 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 15:38:10,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 15:38:10,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 15:38:10,826 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 15:38:10,826 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 15:38:10,826 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 15:38:10,826 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 15:38:10,827 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 15:38:10,827 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 15:38:10,827 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 15:38:10,827 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 15:38:10,827 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 15:38:10,827 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 15:38:10,827 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 15:38:10,828 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 15:38:10,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 15:38:10,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 15:38:10,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 15:38:10,828 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 15:38:10,829 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 15:38:10,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 15:38:10,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 15:38:10,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 15:38:10,829 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 15:38:10,829 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 15:38:10,829 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 15:38:10,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 15:38:10,830 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 15:38:10,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 15:38:10,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 15:38:10,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 15:38:10,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 15:38:10,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 15:38:10,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 15:38:10,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 15:38:10,831 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 15:38:10,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 15:38:10,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 15:38:10,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 15:38:10,831 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_9c8d74c5-0e70-46b3-8df5-568bcef16728/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6943849e6f46346ed71c5d8e09de50318fefe6a [2020-12-09 15:38:10,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 15:38:11,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 15:38:11,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 15:38:11,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 15:38:11,013 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 15:38:11,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2020-12-09 15:38:11,059 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/data/43967f835/ee459a2d3d904fee9218f1153f74017e/FLAG9758be01c [2020-12-09 15:38:11,474 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 15:38:11,474 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2020-12-09 15:38:11,487 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/data/43967f835/ee459a2d3d904fee9218f1153f74017e/FLAG9758be01c [2020-12-09 15:38:11,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/data/43967f835/ee459a2d3d904fee9218f1153f74017e [2020-12-09 15:38:11,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 15:38:11,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 15:38:11,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 15:38:11,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 15:38:11,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 15:38:11,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:38:11" (1/1) ... [2020-12-09 15:38:11,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a8ab94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:11, skipping insertion in model container [2020-12-09 15:38:11,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:38:11" (1/1) ... [2020-12-09 15:38:11,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 15:38:11,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 15:38:12,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:38:12,165 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 15:38:12,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@12edc41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:12, skipping insertion in model container [2020-12-09 15:38:12,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 15:38:12,166 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 15:38:12,168 INFO L168 Benchmark]: Toolchain (without parser) took 325.33 ms. Allocated memory is still 104.9 MB. Free memory was 77.2 MB in the beginning and 77.8 MB in the end (delta: -673.2 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 15:38:12,169 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 104.9 MB. Free memory is still 70.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:38:12,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.79 ms. Allocated memory is still 104.9 MB. Free memory was 77.0 MB in the beginning and 77.8 MB in the end (delta: -898.1 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 15:38:12,171 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 104.9 MB. Free memory is still 70.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 323.79 ms. Allocated memory is still 104.9 MB. Free memory was 77.0 MB in the beginning and 77.8 MB in the end (delta: -898.1 kB). Peak memory consumption was 10.5 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 15:38:13,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 15:38:13,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 15:38:13,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 15:38:13,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 15:38:13,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 15:38:13,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 15:38:13,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 15:38:13,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 15:38:13,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 15:38:13,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 15:38:13,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 15:38:13,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 15:38:13,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 15:38:13,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 15:38:13,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 15:38:13,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 15:38:13,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 15:38:13,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 15:38:13,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 15:38:13,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 15:38:13,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 15:38:13,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 15:38:13,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 15:38:13,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 15:38:13,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 15:38:13,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 15:38:13,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 15:38:13,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 15:38:13,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 15:38:13,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 15:38:13,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 15:38:13,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 15:38:13,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 15:38:13,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 15:38:13,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 15:38:13,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 15:38:13,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 15:38:13,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 15:38:13,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 15:38:13,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 15:38:13,618 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 15:38:13,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 15:38:13,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 15:38:13,645 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 15:38:13,645 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 15:38:13,645 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 15:38:13,645 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 15:38:13,645 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 15:38:13,645 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 15:38:13,646 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 15:38:13,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 15:38:13,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 15:38:13,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 15:38:13,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 15:38:13,647 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 15:38:13,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 15:38:13,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 15:38:13,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 15:38:13,647 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 15:38:13,647 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 15:38:13,647 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 15:38:13,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 15:38:13,648 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 15:38:13,648 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 15:38:13,648 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 15:38:13,648 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 15:38:13,648 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 15:38:13,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 15:38:13,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 15:38:13,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 15:38:13,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 15:38:13,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 15:38:13,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 15:38:13,649 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 15:38:13,649 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 15:38:13,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 15:38:13,649 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 15:38:13,650 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_9c8d74c5-0e70-46b3-8df5-568bcef16728/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6943849e6f46346ed71c5d8e09de50318fefe6a [2020-12-09 15:38:13,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 15:38:13,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 15:38:13,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 15:38:13,887 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 15:38:13,888 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 15:38:13,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2020-12-09 15:38:13,928 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/data/7b7c40e6c/56781abd09b647df8e4856ce161c6a11/FLAG58504b523 [2020-12-09 15:38:14,350 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 15:38:14,350 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2020-12-09 15:38:14,363 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/data/7b7c40e6c/56781abd09b647df8e4856ce161c6a11/FLAG58504b523 [2020-12-09 15:38:14,374 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/data/7b7c40e6c/56781abd09b647df8e4856ce161c6a11 [2020-12-09 15:38:14,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 15:38:14,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 15:38:14,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 15:38:14,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 15:38:14,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 15:38:14,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:38:14" (1/1) ... [2020-12-09 15:38:14,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2888af29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:14, skipping insertion in model container [2020-12-09 15:38:14,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:38:14" (1/1) ... [2020-12-09 15:38:14,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 15:38:14,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 15:38:14,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:38:14,688 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 15:38:14,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 15:38:14,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:38:14,735 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 15:38:14,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:38:14,841 INFO L208 MainTranslator]: Completed translation [2020-12-09 15:38:14,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:14 WrapperNode [2020-12-09 15:38:14,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 15:38:14,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 15:38:14,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 15:38:14,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 15:38:14,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:14" (1/1) ... [2020-12-09 15:38:14,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:14" (1/1) ... [2020-12-09 15:38:14,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 15:38:14,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 15:38:14,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 15:38:14,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 15:38:14,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:14" (1/1) ... [2020-12-09 15:38:14,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:14" (1/1) ... [2020-12-09 15:38:14,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:14" (1/1) ... [2020-12-09 15:38:14,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:14" (1/1) ... [2020-12-09 15:38:14,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:14" (1/1) ... [2020-12-09 15:38:14,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:14" (1/1) ... [2020-12-09 15:38:14,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:14" (1/1) ... [2020-12-09 15:38:14,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 15:38:14,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 15:38:14,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 15:38:14,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 15:38:14,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/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 15:38:14,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 15:38:14,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 15:38:14,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 15:38:14,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-09 15:38:14,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 15:38:14,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 15:38:15,158 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 15:38:15,158 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-09 15:38:15,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:38:15 BoogieIcfgContainer [2020-12-09 15:38:15,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 15:38:15,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 15:38:15,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 15:38:15,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 15:38:15,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:38:14" (1/3) ... [2020-12-09 15:38:15,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f0a4e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:38:15, skipping insertion in model container [2020-12-09 15:38:15,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:38:14" (2/3) ... [2020-12-09 15:38:15,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f0a4e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:38:15, skipping insertion in model container [2020-12-09 15:38:15,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:38:15" (3/3) ... [2020-12-09 15:38:15,165 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test20-2.i [2020-12-09 15:38:15,174 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 15:38:15,176 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-09 15:38:15,184 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 15:38:15,198 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 15:38:15,198 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 15:38:15,198 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 15:38:15,198 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 15:38:15,198 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 15:38:15,199 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 15:38:15,199 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 15:38:15,199 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 15:38:15,207 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-12-09 15:38:15,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 15:38:15,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:38:15,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:38:15,212 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:38:15,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:38:15,216 INFO L82 PathProgramCache]: Analyzing trace with hash -594039000, now seen corresponding path program 1 times [2020-12-09 15:38:15,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:38:15,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265917158] [2020-12-09 15:38:15,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/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 15:38:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:38:15,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 15:38:15,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:38:15,429 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 15:38:15,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:38:15,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265917158] [2020-12-09 15:38:15,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:38:15,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 15:38:15,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840524162] [2020-12-09 15:38:15,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 15:38:15,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:38:15,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 15:38:15,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-09 15:38:15,450 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 8 states. [2020-12-09 15:38:15,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:38:15,666 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-12-09 15:38:15,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 15:38:15,668 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-12-09 15:38:15,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:38:15,675 INFO L225 Difference]: With dead ends: 37 [2020-12-09 15:38:15,675 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 15:38:15,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-09 15:38:15,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 15:38:15,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2020-12-09 15:38:15,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 15:38:15,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-12-09 15:38:15,705 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 9 [2020-12-09 15:38:15,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:38:15,705 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-12-09 15:38:15,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 15:38:15,705 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-12-09 15:38:15,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 15:38:15,706 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:38:15,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:38:15,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 15:38:15,907 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:38:15,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:38:15,909 INFO L82 PathProgramCache]: Analyzing trace with hash -591268437, now seen corresponding path program 1 times [2020-12-09 15:38:15,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:38:15,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137138541] [2020-12-09 15:38:15,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/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 15:38:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:38:16,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 15:38:16,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:38:16,082 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 15:38:16,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:38:16,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137138541] [2020-12-09 15:38:16,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:38:16,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:38:16,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690044094] [2020-12-09 15:38:16,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:38:16,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:38:16,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:38:16,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:38:16,085 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 4 states. [2020-12-09 15:38:16,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:38:16,104 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-12-09 15:38:16,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 15:38:16,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 15:38:16,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:38:16,105 INFO L225 Difference]: With dead ends: 34 [2020-12-09 15:38:16,105 INFO L226 Difference]: Without dead ends: 34 [2020-12-09 15:38:16,106 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 15:38:16,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-09 15:38:16,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2020-12-09 15:38:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 15:38:16,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-12-09 15:38:16,109 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 9 [2020-12-09 15:38:16,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:38:16,109 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-12-09 15:38:16,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:38:16,109 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-09 15:38:16,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 15:38:16,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:38:16,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:38:16,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 15:38:16,311 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:38:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:38:16,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1183738925, now seen corresponding path program 1 times [2020-12-09 15:38:16,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:38:16,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300029547] [2020-12-09 15:38:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/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 15:38:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:38:16,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 15:38:16,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:38:16,471 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 15:38:16,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:38:16,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300029547] [2020-12-09 15:38:16,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:38:16,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:38:16,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85349240] [2020-12-09 15:38:16,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:38:16,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:38:16,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:38:16,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:38:16,473 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2020-12-09 15:38:16,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:38:16,523 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-12-09 15:38:16,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:38:16,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 15:38:16,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:38:16,524 INFO L225 Difference]: With dead ends: 24 [2020-12-09 15:38:16,524 INFO L226 Difference]: Without dead ends: 24 [2020-12-09 15:38:16,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:38:16,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-09 15:38:16,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2020-12-09 15:38:16,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 15:38:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-12-09 15:38:16,529 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 9 [2020-12-09 15:38:16,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:38:16,529 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-12-09 15:38:16,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:38:16,529 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-12-09 15:38:16,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 15:38:16,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:38:16,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:38:16,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 15:38:16,730 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:38:16,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:38:16,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1235339760, now seen corresponding path program 1 times [2020-12-09 15:38:16,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:38:16,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295180870] [2020-12-09 15:38:16,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/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 15:38:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:38:16,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 15:38:16,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:38:16,894 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 15:38:16,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:38:16,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295180870] [2020-12-09 15:38:16,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:38:16,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 15:38:16,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592780847] [2020-12-09 15:38:16,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 15:38:16,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:38:16,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 15:38:16,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-09 15:38:16,896 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2020-12-09 15:38:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:38:17,215 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-12-09 15:38:17,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 15:38:17,215 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2020-12-09 15:38:17,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:38:17,215 INFO L225 Difference]: With dead ends: 31 [2020-12-09 15:38:17,215 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 15:38:17,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2020-12-09 15:38:17,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 15:38:17,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2020-12-09 15:38:17,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 15:38:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-12-09 15:38:17,218 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 10 [2020-12-09 15:38:17,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:38:17,218 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-12-09 15:38:17,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 15:38:17,218 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-12-09 15:38:17,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 15:38:17,219 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:38:17,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:38:17,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 15:38:17,421 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:38:17,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:38:17,422 INFO L82 PathProgramCache]: Analyzing trace with hash -2044686386, now seen corresponding path program 1 times [2020-12-09 15:38:17,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:38:17,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381323888] [2020-12-09 15:38:17,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/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 15:38:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:38:17,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 15:38:17,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:38:17,578 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 15:38:17,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:38:17,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381323888] [2020-12-09 15:38:17,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:38:17,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:38:17,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084043246] [2020-12-09 15:38:17,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:38:17,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:38:17,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:38:17,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:38:17,579 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 4 states. [2020-12-09 15:38:17,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:38:17,596 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-12-09 15:38:17,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 15:38:17,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 15:38:17,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:38:17,596 INFO L225 Difference]: With dead ends: 23 [2020-12-09 15:38:17,597 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 15:38:17,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 15:38:17,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 15:38:17,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-12-09 15:38:17,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 15:38:17,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-12-09 15:38:17,599 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2020-12-09 15:38:17,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:38:17,599 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-12-09 15:38:17,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:38:17,599 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-12-09 15:38:17,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 15:38:17,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:38:17,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:38:17,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 15:38:17,801 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:38:17,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:38:17,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1958790987, now seen corresponding path program 1 times [2020-12-09 15:38:17,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:38:17,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699156674] [2020-12-09 15:38:17,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/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 15:38:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:38:17,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:38:17,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:38:17,852 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 15:38:17,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:38:17,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699156674] [2020-12-09 15:38:17,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:38:17,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:38:17,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397707295] [2020-12-09 15:38:17,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:38:17,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:38:17,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:38:17,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:38:17,853 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 3 states. [2020-12-09 15:38:17,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:38:17,866 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-12-09 15:38:17,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:38:17,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-09 15:38:17,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:38:17,867 INFO L225 Difference]: With dead ends: 22 [2020-12-09 15:38:17,867 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 15:38:17,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 15:38:17,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 15:38:17,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-09 15:38:17,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 15:38:17,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-12-09 15:38:17,869 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 10 [2020-12-09 15:38:17,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:38:17,869 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-12-09 15:38:17,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:38:17,869 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-12-09 15:38:17,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 15:38:17,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:38:17,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:38:18,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 15:38:18,072 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:38:18,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:38:18,073 INFO L82 PathProgramCache]: Analyzing trace with hash 359173162, now seen corresponding path program 1 times [2020-12-09 15:38:18,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:38:18,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026215574] [2020-12-09 15:38:18,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/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 15:38:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:38:18,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 15:38:18,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:38:18,148 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 15:38:18,149 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 15:38:18,151 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 15:38:18,152 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 15:38:18,152 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 15:38:18,188 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 15:38:18,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:38:18,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026215574] [2020-12-09 15:38:18,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:38:18,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 15:38:18,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353200757] [2020-12-09 15:38:18,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 15:38:18,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:38:18,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 15:38:18,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-09 15:38:18,190 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 8 states. [2020-12-09 15:38:18,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:38:18,291 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-12-09 15:38:18,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 15:38:18,291 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-12-09 15:38:18,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:38:18,291 INFO L225 Difference]: With dead ends: 14 [2020-12-09 15:38:18,291 INFO L226 Difference]: Without dead ends: 14 [2020-12-09 15:38:18,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-09 15:38:18,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-09 15:38:18,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-09 15:38:18,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-09 15:38:18,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-12-09 15:38:18,293 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2020-12-09 15:38:18,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:38:18,293 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-12-09 15:38:18,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 15:38:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-12-09 15:38:18,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 15:38:18,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:38:18,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:38:18,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 15:38:18,495 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:38:18,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:38:18,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1568026990, now seen corresponding path program 1 times [2020-12-09 15:38:18,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:38:18,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280488795] [2020-12-09 15:38:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/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 15:38:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:38:18,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 15:38:18,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:38:18,627 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 15:38:18,627 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 15:38:18,629 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 15:38:18,641 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2020-12-09 15:38:18,644 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 15:38:18,646 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 15:38:18,646 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-12-09 15:38:18,647 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 15:38:18,655 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 15:38:20,845 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 15:38:20,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:38:20,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280488795] [2020-12-09 15:38:20,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:38:20,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 15:38:20,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417566288] [2020-12-09 15:38:20,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 15:38:20,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:38:20,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 15:38:20,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=81, Unknown=1, NotChecked=0, Total=110 [2020-12-09 15:38:20,847 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 11 states. [2020-12-09 15:38:23,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:38:23,217 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-12-09 15:38:23,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 15:38:23,218 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-12-09 15:38:23,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:38:23,218 INFO L225 Difference]: With dead ends: 13 [2020-12-09 15:38:23,218 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 15:38:23,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=73, Invalid=166, Unknown=1, NotChecked=0, Total=240 [2020-12-09 15:38:23,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 15:38:23,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 15:38:23,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 15:38:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 15:38:23,219 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-09 15:38:23,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:38:23,219 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 15:38:23,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 15:38:23,219 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 15:38:23,219 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 15:38:23,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 15:38:23,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:38:23 BoogieIcfgContainer [2020-12-09 15:38:23,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 15:38:23,432 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 15:38:23,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 15:38:23,433 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 15:38:23,434 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:38:15" (3/4) ... [2020-12-09 15:38:23,441 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 15:38:23,463 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 15:38:23,463 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 15:38:23,464 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 15:38:23,501 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9c8d74c5-0e70-46b3-8df5-568bcef16728/bin/utaipan/witness.graphml [2020-12-09 15:38:23,501 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 15:38:23,502 INFO L168 Benchmark]: Toolchain (without parser) took 9123.23 ms. Allocated memory was 65.0 MB in the beginning and 104.9 MB in the end (delta: 39.8 MB). Free memory was 46.8 MB in the beginning and 66.7 MB in the end (delta: -19.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2020-12-09 15:38:23,502 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 65.0 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:38:23,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 462.79 ms. Allocated memory was 65.0 MB in the beginning and 86.0 MB in the end (delta: 21.0 MB). Free memory was 46.5 MB in the beginning and 55.6 MB in the end (delta: -9.1 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2020-12-09 15:38:23,503 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.72 ms. Allocated memory is still 86.0 MB. Free memory was 55.6 MB in the beginning and 53.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:38:23,504 INFO L168 Benchmark]: Boogie Preprocessor took 18.91 ms. Allocated memory is still 86.0 MB. Free memory was 53.4 MB in the beginning and 51.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:38:23,504 INFO L168 Benchmark]: RCFGBuilder took 260.34 ms. Allocated memory is still 86.0 MB. Free memory was 51.8 MB in the beginning and 61.3 MB in the end (delta: -9.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-12-09 15:38:23,505 INFO L168 Benchmark]: TraceAbstraction took 8270.38 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 60.8 MB in the beginning and 69.7 MB in the end (delta: -8.9 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-12-09 15:38:23,505 INFO L168 Benchmark]: Witness Printer took 68.84 ms. Allocated memory is still 104.9 MB. Free memory was 69.7 MB in the beginning and 66.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:38:23,508 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 65.0 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 462.79 ms. Allocated memory was 65.0 MB in the beginning and 86.0 MB in the end (delta: 21.0 MB). Free memory was 46.5 MB in the beginning and 55.6 MB in the end (delta: -9.1 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.72 ms. Allocated memory is still 86.0 MB. Free memory was 55.6 MB in the beginning and 53.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.91 ms. Allocated memory is still 86.0 MB. Free memory was 53.4 MB in the beginning and 51.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 260.34 ms. Allocated memory is still 86.0 MB. Free memory was 51.8 MB in the beginning and 61.3 MB in the end (delta: -9.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8270.38 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 60.8 MB in the beginning and 69.7 MB in the end (delta: -8.9 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Witness Printer took 68.84 ms. Allocated memory is still 104.9 MB. Free memory was 69.7 MB in the beginning and 66.7 MB in the end (delta: 3.0 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: 789]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: 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, 19 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 261 SDslu, 234 SDs, 0 SdLazy, 228 SolverSat, 7 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=4, 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, 2.6s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 73 ConstructedInterpolants, 12 QuantifiedInterpolants, 4736 SizeOfPredicates, 46 NumberOfNonLiveVariables, 369 ConjunctsInSsa, 68 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...