./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0775aa74e42740d69127a88680deb3bae2149559 ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0775aa74e42740d69127a88680deb3bae2149559 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 15:24:58,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 15:24:58,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 15:24:58,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 15:24:58,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 15:24:58,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 15:24:58,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 15:24:58,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 15:24:58,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 15:24:58,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 15:24:58,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 15:24:58,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 15:24:58,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 15:24:58,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 15:24:58,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 15:24:58,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 15:24:58,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 15:24:58,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 15:24:58,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 15:24:58,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 15:24:58,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 15:24:58,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 15:24:58,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 15:24:58,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 15:24:58,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 15:24:58,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 15:24:58,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 15:24:58,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 15:24:58,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 15:24:58,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 15:24:58,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 15:24:58,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 15:24:58,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 15:24:58,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 15:24:58,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 15:24:58,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 15:24:58,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 15:24:58,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 15:24:58,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 15:24:58,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 15:24:58,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 15:24:58,632 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 15:24:58,650 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 15:24:58,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 15:24:58,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 15:24:58,651 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 15:24:58,651 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 15:24:58,651 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 15:24:58,652 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 15:24:58,652 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 15:24:58,652 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 15:24:58,652 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 15:24:58,652 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 15:24:58,652 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 15:24:58,652 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 15:24:58,653 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 15:24:58,653 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 15:24:58,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 15:24:58,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 15:24:58,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 15:24:58,653 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 15:24:58,654 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 15:24:58,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 15:24:58,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 15:24:58,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 15:24:58,654 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 15:24:58,654 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 15:24:58,654 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 15:24:58,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 15:24:58,654 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 15:24:58,655 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 15:24:58,655 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 15:24:58,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 15:24:58,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 15:24:58,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 15:24:58,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 15:24:58,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 15:24:58,656 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 15:24:58,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 15:24:58,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 15:24:58,656 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 15:24:58,656 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0775aa74e42740d69127a88680deb3bae2149559 [2020-12-09 15:24:58,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 15:24:58,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 15:24:58,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 15:24:58,841 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 15:24:58,841 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 15:24:58,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2020-12-09 15:24:58,884 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/data/71a19f2c5/39ab4a5487134530980e486cf391de81/FLAGf50ff1c82 [2020-12-09 15:24:59,298 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 15:24:59,298 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2020-12-09 15:24:59,308 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/data/71a19f2c5/39ab4a5487134530980e486cf391de81/FLAGf50ff1c82 [2020-12-09 15:24:59,317 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/data/71a19f2c5/39ab4a5487134530980e486cf391de81 [2020-12-09 15:24:59,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 15:24:59,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 15:24:59,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 15:24:59,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 15:24:59,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 15:24:59,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:24:59" (1/1) ... [2020-12-09 15:24:59,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31cbfa81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:24:59, skipping insertion in model container [2020-12-09 15:24:59,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:24:59" (1/1) ... [2020-12-09 15:24:59,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 15:24:59,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 15:24:59,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:24:59,647 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-12-09 15:24:59,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@189473c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:24:59, skipping insertion in model container [2020-12-09 15:24:59,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 15:24:59,648 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 15:24:59,649 INFO L168 Benchmark]: Toolchain (without parser) took 328.20 ms. Allocated memory was 75.5 MB in the beginning and 102.8 MB in the end (delta: 27.3 MB). Free memory was 42.2 MB in the beginning and 77.2 MB in the end (delta: -35.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 15:24:59,650 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 75.5 MB. Free memory was 50.1 MB in the beginning and 50.1 MB in the end (delta: 30.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:24:59,651 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.49 ms. Allocated memory was 75.5 MB in the beginning and 102.8 MB in the end (delta: 27.3 MB). Free memory was 42.0 MB in the beginning and 77.2 MB in the end (delta: -35.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 15:24:59,652 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 75.5 MB. Free memory was 50.1 MB in the beginning and 50.1 MB in the end (delta: 30.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.49 ms. Allocated memory was 75.5 MB in the beginning and 102.8 MB in the end (delta: 27.3 MB). Free memory was 42.0 MB in the beginning and 77.2 MB in the end (delta: -35.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 15:25:00,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 15:25:00,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 15:25:01,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 15:25:01,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 15:25:01,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 15:25:01,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 15:25:01,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 15:25:01,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 15:25:01,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 15:25:01,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 15:25:01,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 15:25:01,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 15:25:01,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 15:25:01,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 15:25:01,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 15:25:01,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 15:25:01,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 15:25:01,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 15:25:01,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 15:25:01,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 15:25:01,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 15:25:01,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 15:25:01,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 15:25:01,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 15:25:01,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 15:25:01,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 15:25:01,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 15:25:01,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 15:25:01,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 15:25:01,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 15:25:01,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 15:25:01,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 15:25:01,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 15:25:01,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 15:25:01,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 15:25:01,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 15:25:01,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 15:25:01,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 15:25:01,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 15:25:01,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 15:25:01,051 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 15:25:01,070 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 15:25:01,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 15:25:01,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 15:25:01,071 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 15:25:01,072 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 15:25:01,072 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 15:25:01,072 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 15:25:01,072 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 15:25:01,072 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 15:25:01,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 15:25:01,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 15:25:01,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 15:25:01,073 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 15:25:01,073 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 15:25:01,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 15:25:01,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 15:25:01,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 15:25:01,074 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 15:25:01,074 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 15:25:01,074 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 15:25:01,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 15:25:01,074 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 15:25:01,074 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 15:25:01,074 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 15:25:01,074 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 15:25:01,074 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 15:25:01,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 15:25:01,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 15:25:01,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 15:25:01,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 15:25:01,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 15:25:01,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 15:25:01,080 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 15:25:01,080 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 15:25:01,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 15:25:01,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 15:25:01,081 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0775aa74e42740d69127a88680deb3bae2149559 [2020-12-09 15:25:01,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 15:25:01,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 15:25:01,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 15:25:01,323 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 15:25:01,323 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 15:25:01,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2020-12-09 15:25:01,370 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/data/03d4b1a5d/405765f5ccd54ae7ae1867e617d70a60/FLAG8f5462883 [2020-12-09 15:25:01,845 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 15:25:01,846 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2020-12-09 15:25:01,860 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/data/03d4b1a5d/405765f5ccd54ae7ae1867e617d70a60/FLAG8f5462883 [2020-12-09 15:25:01,873 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/data/03d4b1a5d/405765f5ccd54ae7ae1867e617d70a60 [2020-12-09 15:25:01,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 15:25:01,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 15:25:01,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 15:25:01,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 15:25:01,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 15:25:01,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:25:01" (1/1) ... [2020-12-09 15:25:01,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c006cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:01, skipping insertion in model container [2020-12-09 15:25:01,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:25:01" (1/1) ... [2020-12-09 15:25:01,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 15:25:01,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 15:25:02,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:25:02,208 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 15:25:02,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 15:25:02,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:25:02,259 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 15:25:02,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:25:02,362 INFO L208 MainTranslator]: Completed translation [2020-12-09 15:25:02,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:02 WrapperNode [2020-12-09 15:25:02,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 15:25:02,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 15:25:02,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 15:25:02,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 15:25:02,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:02" (1/1) ... [2020-12-09 15:25:02,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:02" (1/1) ... [2020-12-09 15:25:02,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 15:25:02,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 15:25:02,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 15:25:02,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 15:25:02,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:02" (1/1) ... [2020-12-09 15:25:02,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:02" (1/1) ... [2020-12-09 15:25:02,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:02" (1/1) ... [2020-12-09 15:25:02,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:02" (1/1) ... [2020-12-09 15:25:02,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:02" (1/1) ... [2020-12-09 15:25:02,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:02" (1/1) ... [2020-12-09 15:25:02,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:02" (1/1) ... [2020-12-09 15:25:02,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 15:25:02,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 15:25:02,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 15:25:02,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 15:25:02,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 15:25:02,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 15:25:02,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 15:25:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 15:25:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-09 15:25:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 15:25:02,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 15:25:02,655 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 15:25:02,655 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-09 15:25:02,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:25:02 BoogieIcfgContainer [2020-12-09 15:25:02,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 15:25:02,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 15:25:02,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 15:25:02,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 15:25:02,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:25:01" (1/3) ... [2020-12-09 15:25:02,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d5793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:25:02, skipping insertion in model container [2020-12-09 15:25:02,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:02" (2/3) ... [2020-12-09 15:25:02,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d5793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:25:02, skipping insertion in model container [2020-12-09 15:25:02,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:25:02" (3/3) ... [2020-12-09 15:25:02,662 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test4-2.i [2020-12-09 15:25:02,673 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 15:25:02,675 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-09 15:25:02,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-09 15:25:02,697 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 15:25:02,697 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 15:25:02,697 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 15:25:02,697 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 15:25:02,697 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 15:25:02,697 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 15:25:02,697 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 15:25:02,697 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 15:25:02,706 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-12-09 15:25:02,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 15:25:02,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:25:02,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 15:25:02,711 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:25:02,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:25:02,714 INFO L82 PathProgramCache]: Analyzing trace with hash 889509386, now seen corresponding path program 1 times [2020-12-09 15:25:02,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:25:02,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091305009] [2020-12-09 15:25:02,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 15:25:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:25:02,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 15:25:02,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:25:02,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:25:02,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:25:02,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091305009] [2020-12-09 15:25:02,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:25:02,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:25:02,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140302278] [2020-12-09 15:25:02,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:25:02,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:25:02,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:25:02,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:25:02,840 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2020-12-09 15:25:02,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:25:02,903 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2020-12-09 15:25:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:25:02,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 15:25:02,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:25:02,910 INFO L225 Difference]: With dead ends: 75 [2020-12-09 15:25:02,911 INFO L226 Difference]: Without dead ends: 67 [2020-12-09 15:25:02,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:25:02,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-09 15:25:02,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 23. [2020-12-09 15:25:02,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 15:25:02,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-12-09 15:25:02,935 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 6 [2020-12-09 15:25:02,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:25:02,935 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-12-09 15:25:02,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:25:02,935 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-09 15:25:02,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 15:25:02,935 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:25:02,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 15:25:03,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 15:25:03,138 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:25:03,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:25:03,141 INFO L82 PathProgramCache]: Analyzing trace with hash 889568968, now seen corresponding path program 1 times [2020-12-09 15:25:03,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:25:03,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329908760] [2020-12-09 15:25:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 15:25:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:25:03,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 15:25:03,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:25:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:25:03,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:25:03,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329908760] [2020-12-09 15:25:03,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:25:03,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:25:03,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293037894] [2020-12-09 15:25:03,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:25:03,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:25:03,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:25:03,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:25:03,295 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2020-12-09 15:25:03,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:25:03,324 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-12-09 15:25:03,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:25:03,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 15:25:03,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:25:03,325 INFO L225 Difference]: With dead ends: 32 [2020-12-09 15:25:03,325 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 15:25:03,326 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 [2020-12-09 15:25:03,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 15:25:03,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2020-12-09 15:25:03,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 15:25:03,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-12-09 15:25:03,330 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 6 [2020-12-09 15:25:03,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:25:03,330 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-12-09 15:25:03,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:25:03,331 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-12-09 15:25:03,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 15:25:03,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:25:03,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:25:03,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 15:25:03,533 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:25:03,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:25:03,535 INFO L82 PathProgramCache]: Analyzing trace with hash 119384781, now seen corresponding path program 1 times [2020-12-09 15:25:03,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:25:03,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277374410] [2020-12-09 15:25:03,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 15:25:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:25:03,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 15:25:03,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:25:03,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:25:03,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:25:03,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277374410] [2020-12-09 15:25:03,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:25:03,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:25:03,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153365005] [2020-12-09 15:25:03,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:25:03,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:25:03,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:25:03,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:25:03,744 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 4 states. [2020-12-09 15:25:03,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:25:03,778 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-12-09 15:25:03,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 15:25:03,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 15:25:03,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:25:03,779 INFO L225 Difference]: With dead ends: 20 [2020-12-09 15:25:03,779 INFO L226 Difference]: Without dead ends: 20 [2020-12-09 15:25:03,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:25:03,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-09 15:25:03,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-09 15:25:03,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 15:25:03,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-12-09 15:25:03,782 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 8 [2020-12-09 15:25:03,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:25:03,782 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-12-09 15:25:03,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:25:03,782 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-12-09 15:25:03,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 15:25:03,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:25:03,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:25:03,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 15:25:03,985 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:25:03,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:25:03,987 INFO L82 PathProgramCache]: Analyzing trace with hash -594039032, now seen corresponding path program 1 times [2020-12-09 15:25:03,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:25:03,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676981304] [2020-12-09 15:25:03,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 15:25:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:25:04,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 15:25:04,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:25:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:25:04,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:25:04,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676981304] [2020-12-09 15:25:04,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:25:04,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:25:04,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845638150] [2020-12-09 15:25:04,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:25:04,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:25:04,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:25:04,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:25:04,104 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2020-12-09 15:25:04,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:25:04,155 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-12-09 15:25:04,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:25:04,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 15:25:04,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:25:04,156 INFO L225 Difference]: With dead ends: 34 [2020-12-09 15:25:04,156 INFO L226 Difference]: Without dead ends: 34 [2020-12-09 15:25:04,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:25:04,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-09 15:25:04,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2020-12-09 15:25:04,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-09 15:25:04,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-12-09 15:25:04,159 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 9 [2020-12-09 15:25:04,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:25:04,159 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-12-09 15:25:04,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:25:04,160 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-12-09 15:25:04,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 15:25:04,160 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:25:04,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:25:04,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 15:25:04,362 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:25:04,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:25:04,364 INFO L82 PathProgramCache]: Analyzing trace with hash -594098614, now seen corresponding path program 1 times [2020-12-09 15:25:04,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:25:04,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356154139] [2020-12-09 15:25:04,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 15:25:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:25:04,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 15:25:04,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:25:04,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:25:04,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:25:04,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356154139] [2020-12-09 15:25:04,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:25:04,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:25:04,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63002000] [2020-12-09 15:25:04,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 15:25:04,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:25:04,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 15:25:04,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:25:04,566 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 6 states. [2020-12-09 15:25:04,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:25:04,642 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2020-12-09 15:25:04,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 15:25:04,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-09 15:25:04,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:25:04,643 INFO L225 Difference]: With dead ends: 38 [2020-12-09 15:25:04,643 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 15:25:04,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:25:04,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 15:25:04,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 23. [2020-12-09 15:25:04,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 15:25:04,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-09 15:25:04,646 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 9 [2020-12-09 15:25:04,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:25:04,646 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-09 15:25:04,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 15:25:04,646 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-09 15:25:04,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 15:25:04,647 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:25:04,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:25:04,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 15:25:04,848 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:25:04,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:25:04,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1237187795, now seen corresponding path program 1 times [2020-12-09 15:25:04,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:25:04,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686734981] [2020-12-09 15:25:04,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 15:25:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:25:04,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 15:25:04,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:25:04,973 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 15:25:04,973 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 15:25:04,976 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 15:25:04,976 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 15:25:04,976 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 15:25:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:25:04,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:25:04,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686734981] [2020-12-09 15:25:04,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:25:04,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:25:04,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996438128] [2020-12-09 15:25:04,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:25:04,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:25:04,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:25:04,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:25:04,987 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 4 states. [2020-12-09 15:25:05,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:25:05,022 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-12-09 15:25:05,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 15:25:05,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 15:25:05,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:25:05,023 INFO L225 Difference]: With dead ends: 24 [2020-12-09 15:25:05,023 INFO L226 Difference]: Without dead ends: 24 [2020-12-09 15:25:05,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:25:05,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-09 15:25:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2020-12-09 15:25:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 15:25:05,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-12-09 15:25:05,025 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2020-12-09 15:25:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:25:05,025 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-12-09 15:25:05,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:25:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-09 15:25:05,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 15:25:05,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:25:05,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:25:05,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 15:25:05,228 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:25:05,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:25:05,229 INFO L82 PathProgramCache]: Analyzing trace with hash 359142378, now seen corresponding path program 1 times [2020-12-09 15:25:05,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:25:05,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54849503] [2020-12-09 15:25:05,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 15:25:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:25:05,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 15:25:05,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:25:05,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:25:05,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:25:05,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54849503] [2020-12-09 15:25:05,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:25:05,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:25:05,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407854123] [2020-12-09 15:25:05,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:25:05,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:25:05,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:25:05,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:25:05,364 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2020-12-09 15:25:05,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:25:05,378 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-12-09 15:25:05,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:25:05,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 15:25:05,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:25:05,379 INFO L225 Difference]: With dead ends: 17 [2020-12-09 15:25:05,379 INFO L226 Difference]: Without dead ends: 17 [2020-12-09 15:25:05,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:25:05,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-09 15:25:05,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-09 15:25:05,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-09 15:25:05,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-12-09 15:25:05,382 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2020-12-09 15:25:05,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:25:05,382 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-12-09 15:25:05,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:25:05,382 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-12-09 15:25:05,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 15:25:05,383 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:25:05,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:25:05,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 15:25:05,585 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:25:05,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:25:05,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1751488111, now seen corresponding path program 1 times [2020-12-09 15:25:05,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:25:05,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647274779] [2020-12-09 15:25:05,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 15:25:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:25:05,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 15:25:05,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:25:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:25:05,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:25:05,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647274779] [2020-12-09 15:25:05,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:25:05,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:25:05,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880379294] [2020-12-09 15:25:05,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:25:05,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:25:05,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:25:05,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:25:05,701 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2020-12-09 15:25:05,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:25:05,770 INFO L93 Difference]: Finished difference Result 51 states and 50 transitions. [2020-12-09 15:25:05,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 15:25:05,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 15:25:05,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:25:05,771 INFO L225 Difference]: With dead ends: 51 [2020-12-09 15:25:05,771 INFO L226 Difference]: Without dead ends: 51 [2020-12-09 15:25:05,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:25:05,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-09 15:25:05,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 26. [2020-12-09 15:25:05,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 15:25:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-12-09 15:25:05,774 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 12 [2020-12-09 15:25:05,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:25:05,774 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-12-09 15:25:05,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:25:05,774 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-12-09 15:25:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 15:25:05,775 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:25:05,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:25:05,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 15:25:05,977 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:25:05,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:25:05,978 INFO L82 PathProgramCache]: Analyzing trace with hash -2144515121, now seen corresponding path program 1 times [2020-12-09 15:25:05,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:25:05,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321383266] [2020-12-09 15:25:05,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-09 15:25:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:25:06,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 15:25:06,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:25:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:25:06,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:25:06,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321383266] [2020-12-09 15:25:06,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:25:06,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:25:06,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593048165] [2020-12-09 15:25:06,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:25:06,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:25:06,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:25:06,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:25:06,084 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 4 states. [2020-12-09 15:25:06,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:25:06,109 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-12-09 15:25:06,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 15:25:06,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 15:25:06,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:25:06,110 INFO L225 Difference]: With dead ends: 28 [2020-12-09 15:25:06,110 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 15:25:06,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:25:06,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 15:25:06,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 16. [2020-12-09 15:25:06,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 15:25:06,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-09 15:25:06,112 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2020-12-09 15:25:06,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:25:06,112 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-09 15:25:06,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:25:06,112 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-09 15:25:06,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 15:25:06,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:25:06,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:25:06,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 15:25:06,314 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:25:06,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:25:06,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1538443468, now seen corresponding path program 1 times [2020-12-09 15:25:06,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:25:06,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529221792] [2020-12-09 15:25:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-09 15:25:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:25:06,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 15:25:06,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:25:06,384 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 15:25:06,385 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 15:25:06,388 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 15:25:06,389 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 15:25:06,389 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:12 [2020-12-09 15:25:06,435 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2020-12-09 15:25:06,437 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 15:25:06,444 INFO L625 ElimStorePlain]: treesize reduction 4, result has 76.5 percent of original size [2020-12-09 15:25:06,445 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 15:25:06,445 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:13 [2020-12-09 15:25:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:25:06,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:25:06,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529221792] [2020-12-09 15:25:06,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:25:06,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 15:25:06,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893608461] [2020-12-09 15:25:06,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 15:25:06,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:25:06,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 15:25:06,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:25:06,460 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2020-12-09 15:25:06,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:25:06,544 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-12-09 15:25:06,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 15:25:06,545 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-12-09 15:25:06,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:25:06,545 INFO L225 Difference]: With dead ends: 23 [2020-12-09 15:25:06,545 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 15:25:06,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-09 15:25:06,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 15:25:06,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 15:25:06,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 15:25:06,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-12-09 15:25:06,547 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 13 [2020-12-09 15:25:06,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:25:06,548 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-12-09 15:25:06,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 15:25:06,548 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-12-09 15:25:06,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 15:25:06,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:25:06,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:25:06,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-09 15:25:06,750 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:25:06,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:25:06,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1947177202, now seen corresponding path program 1 times [2020-12-09 15:25:06,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:25:06,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307574228] [2020-12-09 15:25:06,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 15:25:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:25:06,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 15:25:06,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:25:06,806 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 15:25:06,806 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 15:25:06,808 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 15:25:06,809 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 15:25:06,809 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 15:25:06,840 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 15:25:06,840 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-09 15:25:06,844 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 15:25:06,850 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 15:25:06,851 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 15:25:06,851 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:17 [2020-12-09 15:25:06,893 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2020-12-09 15:25:06,895 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 15:25:06,906 INFO L625 ElimStorePlain]: treesize reduction 4, result has 76.5 percent of original size [2020-12-09 15:25:06,907 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 15:25:06,907 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-12-09 15:25:06,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:25:06,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:25:06,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307574228] [2020-12-09 15:25:06,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:25:06,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 15:25:06,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255349910] [2020-12-09 15:25:06,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 15:25:06,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:25:06,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 15:25:06,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:25:06,928 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2020-12-09 15:25:09,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:25:09,011 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-12-09 15:25:09,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 15:25:09,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-12-09 15:25:09,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:25:09,012 INFO L225 Difference]: With dead ends: 22 [2020-12-09 15:25:09,012 INFO L226 Difference]: Without dead ends: 22 [2020-12-09 15:25:09,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 15:25:09,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-09 15:25:09,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2020-12-09 15:25:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 15:25:09,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-09 15:25:09,013 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-12-09 15:25:09,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:25:09,014 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-09 15:25:09,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 15:25:09,014 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-09 15:25:09,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 15:25:09,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:25:09,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:25:09,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-09 15:25:09,215 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:25:09,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:25:09,217 INFO L82 PathProgramCache]: Analyzing trace with hash 447107319, now seen corresponding path program 1 times [2020-12-09 15:25:09,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:25:09,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886547171] [2020-12-09 15:25:09,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-12-09 15:25:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:25:09,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 15:25:09,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:25:09,321 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 [2020-12-09 15:25:09,322 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 15:25:09,329 INFO L625 ElimStorePlain]: treesize reduction 4, result has 73.3 percent of original size [2020-12-09 15:25:09,330 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 15:25:09,330 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2020-12-09 15:25:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:25:11,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:25:11,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886547171] [2020-12-09 15:25:11,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:25:11,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 15:25:11,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410190405] [2020-12-09 15:25:11,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 15:25:11,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:25:11,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 15:25:11,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=47, Unknown=1, NotChecked=0, Total=72 [2020-12-09 15:25:11,540 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 9 states. [2020-12-09 15:25:13,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:25:13,720 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-12-09 15:25:13,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 15:25:13,720 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-12-09 15:25:13,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:25:13,721 INFO L225 Difference]: With dead ends: 23 [2020-12-09 15:25:13,721 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 15:25:13,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=35, Invalid=74, Unknown=1, NotChecked=0, Total=110 [2020-12-09 15:25:13,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 15:25:13,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-09 15:25:13,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 15:25:13,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-12-09 15:25:13,722 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2020-12-09 15:25:13,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:25:13,722 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-12-09 15:25:13,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 15:25:13,723 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-12-09 15:25:13,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 15:25:13,723 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:25:13,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:25:13,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-09 15:25:13,924 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 15:25:13,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:25:13,925 INFO L82 PathProgramCache]: Analyzing trace with hash -232951051, now seen corresponding path program 1 times [2020-12-09 15:25:13,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 15:25:13,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741053216] [2020-12-09 15:25:13,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-12-09 15:25:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:25:14,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 15:25:14,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:25:14,059 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 15:25:14,059 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-09 15:25:14,061 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 15:25:14,072 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2020-12-09 15:25:14,073 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 15:25:14,075 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 15:25:14,075 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-12-09 15:25:14,076 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 15:25:14,083 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 15:25:16,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:25:16,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 15:25:16,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741053216] [2020-12-09 15:25:16,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:25:16,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 15:25:16,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51353602] [2020-12-09 15:25:16,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 15:25:16,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 15:25:16,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 15:25:16,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=63, Unknown=1, NotChecked=0, Total=90 [2020-12-09 15:25:16,283 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 10 states. [2020-12-09 15:25:22,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:25:22,472 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-12-09 15:25:22,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 15:25:22,472 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-12-09 15:25:22,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:25:22,473 INFO L225 Difference]: With dead ends: 14 [2020-12-09 15:25:22,473 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 15:25:22,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=36, Invalid=94, Unknown=2, NotChecked=0, Total=132 [2020-12-09 15:25:22,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 15:25:22,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 15:25:22,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 15:25:22,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 15:25:22,473 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-12-09 15:25:22,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:25:22,473 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 15:25:22,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 15:25:22,474 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 15:25:22,474 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 15:25:22,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-12-09 15:25:22,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:25:22 BoogieIcfgContainer [2020-12-09 15:25:22,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 15:25:22,680 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 15:25:22,680 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 15:25:22,680 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 15:25:22,681 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:25:02" (3/4) ... [2020-12-09 15:25:22,683 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 15:25:22,691 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 15:25:22,691 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 15:25:22,691 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 15:25:22,720 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_971690ce-326c-408a-adcd-6820029ae234/bin/utaipan/witness.graphml [2020-12-09 15:25:22,720 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 15:25:22,720 INFO L168 Benchmark]: Toolchain (without parser) took 20843.58 ms. Allocated memory was 56.6 MB in the beginning and 107.0 MB in the end (delta: 50.3 MB). Free memory was 34.5 MB in the beginning and 87.1 MB in the end (delta: -52.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 16.1 GB. [2020-12-09 15:25:22,721 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 39.3 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:25:22,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.47 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 34.2 MB in the beginning and 41.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2020-12-09 15:25:22,721 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.69 ms. Allocated memory is still 71.3 MB. Free memory was 41.6 MB in the beginning and 39.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:25:22,722 INFO L168 Benchmark]: Boogie Preprocessor took 17.87 ms. Allocated memory is still 71.3 MB. Free memory was 39.5 MB in the beginning and 38.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:25:22,722 INFO L168 Benchmark]: RCFGBuilder took 237.13 ms. Allocated memory is still 71.3 MB. Free memory was 38.0 MB in the beginning and 41.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-12-09 15:25:22,722 INFO L168 Benchmark]: TraceAbstraction took 20022.28 ms. Allocated memory was 71.3 MB in the beginning and 107.0 MB in the end (delta: 35.7 MB). Free memory was 40.9 MB in the beginning and 37.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. [2020-12-09 15:25:22,723 INFO L168 Benchmark]: Witness Printer took 39.57 ms. Allocated memory is still 107.0 MB. Free memory was 37.4 MB in the beginning and 87.1 MB in the end (delta: -49.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:25:22,724 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 39.3 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 485.47 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 34.2 MB in the beginning and 41.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.69 ms. Allocated memory is still 71.3 MB. Free memory was 41.6 MB in the beginning and 39.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.87 ms. Allocated memory is still 71.3 MB. Free memory was 39.5 MB in the beginning and 38.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 237.13 ms. Allocated memory is still 71.3 MB. Free memory was 38.0 MB in the beginning and 41.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20022.28 ms. Allocated memory was 71.3 MB in the beginning and 107.0 MB in the end (delta: 35.7 MB). Free memory was 40.9 MB in the beginning and 37.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. * Witness Printer took 39.57 ms. Allocated memory is still 107.0 MB. Free memory was 37.4 MB in the beginning and 87.1 MB in the end (delta: -49.8 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: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 761]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 765]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 761]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 761]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.9s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 10.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 199 SDtfs, 326 SDslu, 197 SDs, 0 SdLazy, 414 SolverSat, 41 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=8, 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, 13 MinimizatonAttempts, 127 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 124 ConstructedInterpolants, 35 QuantifiedInterpolants, 14394 SizeOfPredicates, 37 NumberOfNonLiveVariables, 556 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...