./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.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_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI --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 fa0c2a1ec4e9d87c009cc3e8aa4349638d4af33a ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI --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 fa0c2a1ec4e9d87c009cc3e8aa4349638d4af33a ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:21:15,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:15,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:15,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:15,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:15,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:15,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:15,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:15,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:15,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:15,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:15,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:15,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:15,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:15,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:15,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:15,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:15,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:15,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:15,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:15,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:15,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:15,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:15,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:15,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:15,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:15,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:15,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:15,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:15,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:15,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:15,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:15,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:15,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:15,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:15,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:15,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:15,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:15,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:15,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:15,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:15,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:21:15,859 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:15,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:15,861 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:15,861 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:15,862 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:15,862 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:15,862 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:15,862 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:15,862 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:15,863 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:15,864 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:15,864 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:15,864 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:15,864 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:15,864 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:15,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:21:15,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:21:15,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:15,866 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:15,866 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:21:15,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:15,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:15,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:15,867 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:21:15,867 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:21:15,867 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:21:15,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:15,869 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:15,869 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:15,869 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:15,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:15,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:15,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:15,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:15,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:15,871 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:15,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:15,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:15,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:15,871 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa0c2a1ec4e9d87c009cc3e8aa4349638d4af33a [2021-10-11 02:21:16,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:16,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:16,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:16,207 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:16,208 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:16,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.i [2021-10-11 02:21:16,286 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/data/94d857234/a3ba68e6b0544127ae73cd5a5e928cfb/FLAGea9ac982b [2021-10-11 02:21:16,785 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:16,786 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/sv-benchmarks/c/ldv-memsafety/memleaks_test16.i [2021-10-11 02:21:16,803 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/data/94d857234/a3ba68e6b0544127ae73cd5a5e928cfb/FLAGea9ac982b [2021-10-11 02:21:17,092 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/data/94d857234/a3ba68e6b0544127ae73cd5a5e928cfb [2021-10-11 02:21:17,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:17,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:17,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:17,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:17,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:17,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:17" (1/1) ... [2021-10-11 02:21:17,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@491bac7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:17, skipping insertion in model container [2021-10-11 02:21:17,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:17" (1/1) ... [2021-10-11 02:21:17,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:17,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:17,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:17,612 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-11 02:21:17,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3843c48d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:17, skipping insertion in model container [2021-10-11 02:21:17,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:17,614 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-11 02:21:17,617 INFO L168 Benchmark]: Toolchain (without parser) took 519.52 ms. Allocated memory is still 94.4 MB. Free memory was 55.5 MB in the beginning and 68.7 MB in the end (delta: -13.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:17,618 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory is still 73.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:17,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.12 ms. Allocated memory is still 94.4 MB. Free memory was 55.3 MB in the beginning and 68.7 MB in the end (delta: -13.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:17,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory is still 73.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 508.12 ms. Allocated memory is still 94.4 MB. Free memory was 55.3 MB in the beginning and 68.7 MB in the end (delta: -13.4 MB). Peak memory consumption was 6.3 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 [2021-10-11 02:21:19,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:19,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:19,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:19,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:19,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:19,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:19,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:19,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:19,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:19,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:19,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:19,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:19,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:19,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:19,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:19,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:19,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:19,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:19,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:19,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:19,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:19,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:19,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:19,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:19,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:19,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:19,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:19,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:19,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:19,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:19,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:19,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:19,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:19,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:19,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:19,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:19,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:19,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:19,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:19,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:20,001 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-11 02:21:20,053 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:20,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:20,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:20,056 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:20,056 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:20,056 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:20,057 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:20,057 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:20,057 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:20,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:21:20,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:21:20,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:20,061 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:20,061 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:21:20,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:20,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:20,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:20,062 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:21:20,063 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:21:20,063 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:21:20,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:20,063 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:20,064 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:21:20,064 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:21:20,064 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:20,065 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:20,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:20,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:21:20,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:20,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:20,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:20,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:20,067 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:21:20,067 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:21:20,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:20,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:20,069 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa0c2a1ec4e9d87c009cc3e8aa4349638d4af33a [2021-10-11 02:21:20,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:20,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:20,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:20,575 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:20,575 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:20,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test16.i [2021-10-11 02:21:20,646 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/data/522b21a58/34d1676584e54df0b23cf1e0a6044acd/FLAG0c32559c9 [2021-10-11 02:21:21,291 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:21,292 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/sv-benchmarks/c/ldv-memsafety/memleaks_test16.i [2021-10-11 02:21:21,306 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/data/522b21a58/34d1676584e54df0b23cf1e0a6044acd/FLAG0c32559c9 [2021-10-11 02:21:21,532 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/data/522b21a58/34d1676584e54df0b23cf1e0a6044acd [2021-10-11 02:21:21,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:21,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:21,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:21,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:21,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:21,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:21" (1/1) ... [2021-10-11 02:21:21,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ee8496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:21, skipping insertion in model container [2021-10-11 02:21:21,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:21" (1/1) ... [2021-10-11 02:21:21,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:21,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:22,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:22,189 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-11 02:21:22,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:22,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:22,287 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:22,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:22,425 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:22,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:22 WrapperNode [2021-10-11 02:21:22,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:22,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:22,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:22,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:22,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:22" (1/1) ... [2021-10-11 02:21:22,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:22" (1/1) ... [2021-10-11 02:21:22,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:22,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:22,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:22,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:22,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:22" (1/1) ... [2021-10-11 02:21:22,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:22" (1/1) ... [2021-10-11 02:21:22,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:22" (1/1) ... [2021-10-11 02:21:22,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:22" (1/1) ... [2021-10-11 02:21:22,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:22" (1/1) ... [2021-10-11 02:21:22,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:22" (1/1) ... [2021-10-11 02:21:22,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:22" (1/1) ... [2021-10-11 02:21:22,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:22,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:22,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:22,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:22,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:22" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:22,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:21:22,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:22,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:21:22,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-11 02:21:22,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:22,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:22,996 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:22,997 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-11 02:21:22,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:22 BoogieIcfgContainer [2021-10-11 02:21:22,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:23,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:23,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:23,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:23,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:21" (1/3) ... [2021-10-11 02:21:23,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc22f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:23, skipping insertion in model container [2021-10-11 02:21:23,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:22" (2/3) ... [2021-10-11 02:21:23,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc22f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:23, skipping insertion in model container [2021-10-11 02:21:23,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:22" (3/3) ... [2021-10-11 02:21:23,007 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test16.i [2021-10-11 02:21:23,020 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:23,023 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 02:21:23,033 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:21:23,052 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:23,053 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:21:23,053 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:23,053 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:23,053 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:23,053 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:23,053 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:23,054 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:23,065 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2021-10-11 02:21:23,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:21:23,070 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:23,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:21:23,071 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:21:23,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:23,076 INFO L82 PathProgramCache]: Analyzing trace with hash 889783782, now seen corresponding path program 1 times [2021-10-11 02:21:23,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:23,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954922076] [2021-10-11 02:21:23,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:23,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:21:23,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:23,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:23,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:23,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954922076] [2021-10-11 02:21:23,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:23,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:21:23,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631440153] [2021-10-11 02:21:23,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:21:23,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:23,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:21:23,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:23,373 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2021-10-11 02:21:23,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:23,437 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-10-11 02:21:23,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:21:23,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2021-10-11 02:21:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:23,446 INFO L225 Difference]: With dead ends: 27 [2021-10-11 02:21:23,446 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 02:21:23,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:21:23,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 02:21:23,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2021-10-11 02:21:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 02:21:23,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-11 02:21:23,476 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 6 [2021-10-11 02:21:23,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:23,477 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-11 02:21:23,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:21:23,477 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-10-11 02:21:23,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:21:23,478 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:23,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:21:23,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:21:23,694 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:21:23,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:23,695 INFO L82 PathProgramCache]: Analyzing trace with hash 889784041, now seen corresponding path program 1 times [2021-10-11 02:21:23,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:23,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190167174] [2021-10-11 02:21:23,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:23,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:23,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:23,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:23,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:23,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190167174] [2021-10-11 02:21:23,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:23,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:23,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398270091] [2021-10-11 02:21:23,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:23,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:23,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:23,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:23,777 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2021-10-11 02:21:23,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:23,809 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-10-11 02:21:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:23,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 02:21:23,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:23,811 INFO L225 Difference]: With dead ends: 27 [2021-10-11 02:21:23,811 INFO L226 Difference]: Without dead ends: 24 [2021-10-11 02:21:23,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:23,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-11 02:21:23,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2021-10-11 02:21:23,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 02:21:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-11 02:21:23,816 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 6 [2021-10-11 02:21:23,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:23,816 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-11 02:21:23,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:23,816 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-11 02:21:23,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:21:23,817 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:23,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:24,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:21:24,029 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:21:24,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:24,030 INFO L82 PathProgramCache]: Analyzing trace with hash 118460299, now seen corresponding path program 1 times [2021-10-11 02:21:24,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:24,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660340454] [2021-10-11 02:21:24,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:24,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:21:24,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:24,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:24,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:24,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660340454] [2021-10-11 02:21:24,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:24,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:24,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023689486] [2021-10-11 02:21:24,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:21:24,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:24,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:21:24,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:24,154 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2021-10-11 02:21:24,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:24,187 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-11 02:21:24,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:21:24,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-10-11 02:21:24,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:24,189 INFO L225 Difference]: With dead ends: 17 [2021-10-11 02:21:24,189 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:21:24,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:24,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:21:24,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 02:21:24,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 02:21:24,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-11 02:21:24,192 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 8 [2021-10-11 02:21:24,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:24,193 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-11 02:21:24,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:21:24,193 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-11 02:21:24,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:21:24,193 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:24,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:24,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:21:24,408 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:21:24,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:24,409 INFO L82 PathProgramCache]: Analyzing trace with hash 118460558, now seen corresponding path program 1 times [2021-10-11 02:21:24,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:24,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239617732] [2021-10-11 02:21:24,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:24,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:21:24,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:24,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:24,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239617732] [2021-10-11 02:21:24,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:24,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:21:24,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345251731] [2021-10-11 02:21:24,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:21:24,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:24,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:21:24,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:24,527 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2021-10-11 02:21:24,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:24,564 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-11 02:21:24,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:21:24,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-10-11 02:21:24,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:24,566 INFO L225 Difference]: With dead ends: 17 [2021-10-11 02:21:24,566 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:21:24,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:24,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:21:24,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2021-10-11 02:21:24,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:21:24,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-11 02:21:24,570 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2021-10-11 02:21:24,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:24,570 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-11 02:21:24,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:21:24,570 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-11 02:21:24,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:21:24,571 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:24,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:24,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:21:24,786 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:21:24,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:24,787 INFO L82 PathProgramCache]: Analyzing trace with hash -622697974, now seen corresponding path program 1 times [2021-10-11 02:21:24,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:24,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835932816] [2021-10-11 02:21:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:24,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:21:24,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:24,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:24,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835932816] [2021-10-11 02:21:24,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:24,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:24,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386199795] [2021-10-11 02:21:24,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:24,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:24,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:24,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:24,955 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2021-10-11 02:21:25,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:25,089 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-10-11 02:21:25,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:21:25,090 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-10-11 02:21:25,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:25,091 INFO L225 Difference]: With dead ends: 23 [2021-10-11 02:21:25,091 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:21:25,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:21:25,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:21:25,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2021-10-11 02:21:25,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:21:25,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-11 02:21:25,095 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2021-10-11 02:21:25,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:25,095 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-11 02:21:25,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:25,096 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-11 02:21:25,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:21:25,096 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:25,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:25,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:21:25,297 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:21:25,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:25,297 INFO L82 PathProgramCache]: Analyzing trace with hash -565439672, now seen corresponding path program 1 times [2021-10-11 02:21:25,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:25,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903814094] [2021-10-11 02:21:25,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:25,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:21:25,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:25,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:25,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903814094] [2021-10-11 02:21:25,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:25,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:25,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671875787] [2021-10-11 02:21:25,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:25,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:25,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:25,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:25,440 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2021-10-11 02:21:25,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:25,519 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2021-10-11 02:21:25,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:21:25,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-10-11 02:21:25,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:25,521 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:21:25,522 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 02:21:25,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:21:25,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 02:21:25,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-10-11 02:21:25,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:21:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-11 02:21:25,529 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2021-10-11 02:21:25,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:25,529 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-11 02:21:25,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:25,529 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-11 02:21:25,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:21:25,530 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:25,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:25,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:21:25,732 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:21:25,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:25,732 INFO L82 PathProgramCache]: Analyzing trace with hash -2123767955, now seen corresponding path program 1 times [2021-10-11 02:21:25,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:25,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49642136] [2021-10-11 02:21:25,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:25,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:21:25,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:25,835 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 [2021-10-11 02:21:25,838 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:21:25,841 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:21:25,842 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:21:25,842 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:21:25,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:25,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:25,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49642136] [2021-10-11 02:21:25,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:25,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:25,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616885160] [2021-10-11 02:21:25,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:21:25,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:25,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:21:25,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:25,879 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2021-10-11 02:21:25,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:25,951 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-11 02:21:25,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:21:25,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 02:21:25,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:25,952 INFO L225 Difference]: With dead ends: 18 [2021-10-11 02:21:25,952 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 02:21:25,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:25,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 02:21:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2021-10-11 02:21:25,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 02:21:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-11 02:21:25,955 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2021-10-11 02:21:25,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:25,955 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-11 02:21:25,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:21:25,956 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-11 02:21:25,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:21:25,956 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:25,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:26,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:21:26,171 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:21:26,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:26,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1412297103, now seen corresponding path program 1 times [2021-10-11 02:21:26,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:26,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789929787] [2021-10-11 02:21:26,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:26,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:21:26,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:26,263 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:21:26,264 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 [2021-10-11 02:21:26,271 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:21:26,288 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2021-10-11 02:21:26,299 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:26,302 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. [2021-10-11 02:21:26,303 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2021-10-11 02:21:26,306 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:26,329 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:28,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:28,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789929787] [2021-10-11 02:21:28,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:28,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:21:28,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419669706] [2021-10-11 02:21:28,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:21:28,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:28,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:21:28,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=36, Unknown=1, NotChecked=0, Total=56 [2021-10-11 02:21:28,604 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2021-10-11 02:21:44,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:44,903 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-10-11 02:21:44,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:21:44,904 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2021-10-11 02:21:44,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:44,904 INFO L225 Difference]: With dead ends: 19 [2021-10-11 02:21:44,904 INFO L226 Difference]: Without dead ends: 12 [2021-10-11 02:21:44,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=31, Invalid=58, Unknown=1, NotChecked=0, Total=90 [2021-10-11 02:21:44,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-11 02:21:44,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-11 02:21:44,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 02:21:44,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-10-11 02:21:44,907 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2021-10-11 02:21:44,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:44,907 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-10-11 02:21:44,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:21:44,907 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-10-11 02:21:44,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:21:44,908 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:44,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:45,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:21:45,108 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:21:45,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:45,109 INFO L82 PathProgramCache]: Analyzing trace with hash 2073323567, now seen corresponding path program 1 times [2021-10-11 02:21:45,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:45,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81592758] [2021-10-11 02:21:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:45,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:21:45,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:45,212 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-11 02:21:45,213 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:21:45,230 INFO L625 ElimStorePlain]: treesize reduction 4, result has 73.3 percent of original size [2021-10-11 02:21:45,232 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. [2021-10-11 02:21:45,233 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2021-10-11 02:21:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:45,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:45,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81592758] [2021-10-11 02:21:45,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:45,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:21:45,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971719298] [2021-10-11 02:21:45,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:21:45,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:45,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:21:45,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:45,403 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 7 states. [2021-10-11 02:21:45,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:45,486 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-10-11 02:21:45,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:21:45,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2021-10-11 02:21:45,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:45,487 INFO L225 Difference]: With dead ends: 11 [2021-10-11 02:21:45,487 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:21:45,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:21:45,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:21:45,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:21:45,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:21:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:21:45,488 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-11 02:21:45,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:45,488 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:21:45,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:21:45,488 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:21:45,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:21:45,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2021-10-11 02:21:45,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:45 BoogieIcfgContainer [2021-10-11 02:21:45,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:45,693 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:45,693 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:45,693 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:45,694 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:22" (3/4) ... [2021-10-11 02:21:45,697 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:21:45,710 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:21:45,711 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:21:45,711 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:21:45,763 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ca06c7-84ab-4801-95ae-8b28e32a2eed/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:21:45,763 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:45,764 INFO L168 Benchmark]: Toolchain (without parser) took 24226.64 ms. Allocated memory was 54.5 MB in the beginning and 94.4 MB in the end (delta: 39.8 MB). Free memory was 30.3 MB in the beginning and 47.3 MB in the end (delta: -17.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:45,765 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 54.5 MB. Free memory was 35.8 MB in the beginning and 35.8 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:45,765 INFO L168 Benchmark]: CACSL2BoogieTranslator took 885.24 ms. Allocated memory was 54.5 MB in the beginning and 77.6 MB in the end (delta: 23.1 MB). Free memory was 30.1 MB in the beginning and 46.1 MB in the end (delta: -16.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:45,766 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.02 ms. Allocated memory is still 77.6 MB. Free memory was 46.1 MB in the beginning and 43.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:45,766 INFO L168 Benchmark]: Boogie Preprocessor took 29.70 ms. Allocated memory is still 77.6 MB. Free memory was 43.8 MB in the beginning and 42.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:45,766 INFO L168 Benchmark]: RCFGBuilder took 492.23 ms. Allocated memory is still 77.6 MB. Free memory was 42.6 MB in the beginning and 50.8 MB in the end (delta: -8.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:45,767 INFO L168 Benchmark]: TraceAbstraction took 22692.21 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 50.4 MB in the beginning and 50.1 MB in the end (delta: 307.9 kB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:45,768 INFO L168 Benchmark]: Witness Printer took 70.40 ms. Allocated memory is still 94.4 MB. Free memory was 49.2 MB in the beginning and 47.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:45,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 54.5 MB. Free memory was 35.8 MB in the beginning and 35.8 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 885.24 ms. Allocated memory was 54.5 MB in the beginning and 77.6 MB in the end (delta: 23.1 MB). Free memory was 30.1 MB in the beginning and 46.1 MB in the end (delta: -16.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.02 ms. Allocated memory is still 77.6 MB. Free memory was 46.1 MB in the beginning and 43.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.70 ms. Allocated memory is still 77.6 MB. Free memory was 43.8 MB in the beginning and 42.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 492.23 ms. Allocated memory is still 77.6 MB. Free memory was 42.6 MB in the beginning and 50.8 MB in the end (delta: -8.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22692.21 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 50.4 MB in the beginning and 50.1 MB in the end (delta: 307.9 kB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. * Witness Printer took 70.40 ms. Allocated memory is still 94.4 MB. Free memory was 49.2 MB in the beginning and 47.3 MB in the end (delta: 2.0 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: 777]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 769]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 769]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 769]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 22.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 16.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 105 SDtfs, 206 SDslu, 132 SDs, 0 SdLazy, 160 SolverSat, 9 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 16.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 25 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 69 ConstructedInterpolants, 20 QuantifiedInterpolants, 4839 SizeOfPredicates, 46 NumberOfNonLiveVariables, 380 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...