./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.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_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/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 2d51915f2a44f0762761fec81bdd888a975b61fb ............................................................................................................................................ 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_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/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 2d51915f2a44f0762761fec81bdd888a975b61fb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:33:09,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:33:09,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:33:09,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:33:09,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:33:09,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:33:09,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:33:09,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:33:09,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:33:09,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:33:09,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:33:09,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:33:09,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:33:09,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:33:09,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:33:09,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:33:09,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:33:09,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:33:09,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:33:09,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:33:09,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:33:09,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:33:09,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:33:09,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:33:09,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:33:09,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:33:09,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:33:09,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:33:09,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:33:09,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:33:09,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:33:09,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:33:09,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:33:09,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:33:09,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:33:09,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:33:09,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:33:09,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:33:09,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:33:09,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:33:09,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:33:09,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 08:33:09,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:33:09,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:33:09,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:33:09,370 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:33:09,370 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:33:09,371 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:33:09,371 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 08:33:09,371 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:33:09,371 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:33:09,371 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 08:33:09,371 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 08:33:09,371 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:33:09,371 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 08:33:09,372 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 08:33:09,372 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 08:33:09,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 08:33:09,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 08:33:09,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:33:09,373 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:33:09,373 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 08:33:09,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:33:09,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:33:09,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:33:09,373 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 08:33:09,373 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 08:33:09,373 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 08:33:09,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:33:09,374 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:33:09,374 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:33:09,374 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:33:09,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:33:09,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:33:09,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:33:09,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:33:09,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:33:09,375 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 08:33:09,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 08:33:09,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:33:09,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:33:09,375 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_9eeae275-548c-4627-9f63-99697b57bb4b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d51915f2a44f0762761fec81bdd888a975b61fb [2020-12-09 08:33:09,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:33:09,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:33:09,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:33:09,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:33:09,561 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:33:09,562 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2020-12-09 08:33:09,610 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/data/647b7b83c/686939a8db4d498a93fc2bafb22d4377/FLAGa86b93436 [2020-12-09 08:33:10,031 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:33:10,031 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2020-12-09 08:33:10,045 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/data/647b7b83c/686939a8db4d498a93fc2bafb22d4377/FLAGa86b93436 [2020-12-09 08:33:10,057 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/data/647b7b83c/686939a8db4d498a93fc2bafb22d4377 [2020-12-09 08:33:10,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:33:10,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:33:10,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:33:10,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:33:10,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:33:10,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:33:10" (1/1) ... [2020-12-09 08:33:10,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2eba14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:33:10, skipping insertion in model container [2020-12-09 08:33:10,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:33:10" (1/1) ... [2020-12-09 08:33:10,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:33:10,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:33:10,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:33:10,341 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 08:33:10,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4805fb07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:33:10, skipping insertion in model container [2020-12-09 08:33:10,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:33:10,342 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 08:33:10,343 INFO L168 Benchmark]: Toolchain (without parser) took 281.05 ms. Allocated memory is still 115.3 MB. Free memory was 85.2 MB in the beginning and 71.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 08:33:10,344 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 115.3 MB. Free memory is still 94.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:33:10,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.74 ms. Allocated memory is still 115.3 MB. Free memory was 84.9 MB in the beginning and 71.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 08:33:10,345 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 115.3 MB. Free memory is still 94.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 278.74 ms. Allocated memory is still 115.3 MB. Free memory was 84.9 MB in the beginning and 71.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 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 08:33:11,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:33:11,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:33:11,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:33:11,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:33:11,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:33:11,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:33:11,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:33:11,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:33:11,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:33:11,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:33:11,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:33:11,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:33:11,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:33:11,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:33:11,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:33:11,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:33:11,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:33:11,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:33:11,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:33:11,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:33:11,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:33:11,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:33:11,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:33:11,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:33:11,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:33:11,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:33:11,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:33:11,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:33:11,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:33:11,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:33:11,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:33:11,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:33:11,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:33:11,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:33:11,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:33:11,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:33:11,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:33:11,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:33:11,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:33:11,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:33:11,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 08:33:11,791 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:33:11,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:33:11,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:33:11,792 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:33:11,792 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:33:11,792 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:33:11,792 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:33:11,792 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:33:11,792 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:33:11,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 08:33:11,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 08:33:11,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:33:11,793 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:33:11,793 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 08:33:11,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:33:11,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:33:11,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:33:11,794 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 08:33:11,794 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 08:33:11,794 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 08:33:11,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:33:11,794 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:33:11,794 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 08:33:11,795 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 08:33:11,795 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:33:11,795 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:33:11,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:33:11,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 08:33:11,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:33:11,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:33:11,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:33:11,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:33:11,796 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 08:33:11,796 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 08:33:11,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:33:11,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:33:11,796 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_9eeae275-548c-4627-9f63-99697b57bb4b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d51915f2a44f0762761fec81bdd888a975b61fb [2020-12-09 08:33:12,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:33:12,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:33:12,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:33:12,050 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:33:12,051 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:33:12,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2020-12-09 08:33:12,097 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/data/4631a4725/4a5f5dab10cb42d7a8e42c7128f283aa/FLAGb0370003c [2020-12-09 08:33:12,572 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:33:12,573 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2020-12-09 08:33:12,587 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/data/4631a4725/4a5f5dab10cb42d7a8e42c7128f283aa/FLAGb0370003c [2020-12-09 08:33:13,077 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/data/4631a4725/4a5f5dab10cb42d7a8e42c7128f283aa [2020-12-09 08:33:13,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:33:13,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:33:13,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:33:13,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:33:13,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:33:13,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:33:13" (1/1) ... [2020-12-09 08:33:13,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44484749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:33:13, skipping insertion in model container [2020-12-09 08:33:13,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:33:13" (1/1) ... [2020-12-09 08:33:13,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:33:13,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:33:13,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:33:13,381 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 08:33:13,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:33:13,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:33:13,447 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:33:13,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:33:13,549 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:33:13,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:33:13 WrapperNode [2020-12-09 08:33:13,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:33:13,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:33:13,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:33:13,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:33:13,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:33:13" (1/1) ... [2020-12-09 08:33:13,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:33:13" (1/1) ... [2020-12-09 08:33:13,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:33:13,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:33:13,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:33:13,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:33:13,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:33:13" (1/1) ... [2020-12-09 08:33:13,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:33:13" (1/1) ... [2020-12-09 08:33:13,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:33:13" (1/1) ... [2020-12-09 08:33:13,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:33:13" (1/1) ... [2020-12-09 08:33:13,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:33:13" (1/1) ... [2020-12-09 08:33:13,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:33:13" (1/1) ... [2020-12-09 08:33:13,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:33:13" (1/1) ... [2020-12-09 08:33:13,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:33:13,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:33:13,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:33:13,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:33:13,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:33:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/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 08:33:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 08:33:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 08:33:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:33:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 08:33:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 08:33:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-09 08:33:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:33:13,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:33:13,913 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:33:13,914 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-09 08:33:13,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:33:13 BoogieIcfgContainer [2020-12-09 08:33:13,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:33:13,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:33:13,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:33:13,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:33:13,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:33:13" (1/3) ... [2020-12-09 08:33:13,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f41f360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:33:13, skipping insertion in model container [2020-12-09 08:33:13,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:33:13" (2/3) ... [2020-12-09 08:33:13,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f41f360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:33:13, skipping insertion in model container [2020-12-09 08:33:13,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:33:13" (3/3) ... [2020-12-09 08:33:13,920 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test7-2.i [2020-12-09 08:33:13,930 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:33:13,933 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-09 08:33:13,942 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-09 08:33:13,957 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:33:13,958 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 08:33:13,958 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:33:13,958 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:33:13,958 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:33:13,958 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:33:13,958 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:33:13,958 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:33:13,969 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-12-09 08:33:13,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 08:33:13,974 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:13,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:13,975 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:13,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:13,979 INFO L82 PathProgramCache]: Analyzing trace with hash 119408646, now seen corresponding path program 1 times [2020-12-09 08:33:13,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:13,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603474606] [2020-12-09 08:33:13,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/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 08:33:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:14,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 08:33:14,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:14,126 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 08:33:14,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:14,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603474606] [2020-12-09 08:33:14,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:14,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:33:14,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810054530] [2020-12-09 08:33:14,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:33:14,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:14,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:33:14,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:33:14,149 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-12-09 08:33:14,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:14,212 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-12-09 08:33:14,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:33:14,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 08:33:14,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:14,223 INFO L225 Difference]: With dead ends: 67 [2020-12-09 08:33:14,223 INFO L226 Difference]: Without dead ends: 63 [2020-12-09 08:33:14,225 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 08:33:14,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-09 08:33:14,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 35. [2020-12-09 08:33:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 08:33:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-09 08:33:14,255 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-09 08:33:14,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:14,256 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-09 08:33:14,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:33:14,256 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-09 08:33:14,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 08:33:14,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:14,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:14,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 08:33:14,459 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:14,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:14,461 INFO L82 PathProgramCache]: Analyzing trace with hash 119443416, now seen corresponding path program 1 times [2020-12-09 08:33:14,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:14,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656131753] [2020-12-09 08:33:14,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/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 08:33:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:14,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 08:33:14,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:14,633 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 08:33:14,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:14,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656131753] [2020-12-09 08:33:14,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:14,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:33:14,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847740937] [2020-12-09 08:33:14,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:33:14,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:14,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:33:14,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:33:14,636 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-09 08:33:14,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:14,658 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2020-12-09 08:33:14,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:33:14,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 08:33:14,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:14,660 INFO L225 Difference]: With dead ends: 34 [2020-12-09 08:33:14,660 INFO L226 Difference]: Without dead ends: 34 [2020-12-09 08:33:14,660 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 08:33:14,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-09 08:33:14,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-09 08:33:14,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-09 08:33:14,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-12-09 08:33:14,664 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 8 [2020-12-09 08:33:14,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:14,664 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-12-09 08:33:14,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:33:14,664 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-12-09 08:33:14,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 08:33:14,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:14,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:14,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 08:33:14,867 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:14,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:14,869 INFO L82 PathProgramCache]: Analyzing trace with hash 176666948, now seen corresponding path program 1 times [2020-12-09 08:33:14,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:14,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370042073] [2020-12-09 08:33:14,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/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 08:33:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:15,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 08:33:15,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:15,065 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 08:33:15,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:15,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370042073] [2020-12-09 08:33:15,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:15,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 08:33:15,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301122641] [2020-12-09 08:33:15,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:33:15,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:15,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:33:15,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:33:15,067 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-12-09 08:33:15,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:15,113 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-12-09 08:33:15,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:33:15,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 08:33:15,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:15,114 INFO L225 Difference]: With dead ends: 39 [2020-12-09 08:33:15,114 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 08:33:15,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:33:15,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 08:33:15,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-12-09 08:33:15,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 08:33:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-12-09 08:33:15,119 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 8 [2020-12-09 08:33:15,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:15,119 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-12-09 08:33:15,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:33:15,119 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-12-09 08:33:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 08:33:15,120 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:15,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:15,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 08:33:15,324 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:15,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:15,325 INFO L82 PathProgramCache]: Analyzing trace with hash -592221333, now seen corresponding path program 1 times [2020-12-09 08:33:15,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:15,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881630781] [2020-12-09 08:33:15,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/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 08:33:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:15,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 08:33:15,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:15,513 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 08:33:15,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:15,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881630781] [2020-12-09 08:33:15,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:15,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:33:15,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137725267] [2020-12-09 08:33:15,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:33:15,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:15,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:33:15,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:33:15,516 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2020-12-09 08:33:15,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:15,599 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-12-09 08:33:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:33:15,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 08:33:15,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:15,600 INFO L225 Difference]: With dead ends: 62 [2020-12-09 08:33:15,600 INFO L226 Difference]: Without dead ends: 62 [2020-12-09 08:33:15,600 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 08:33:15,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-09 08:33:15,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2020-12-09 08:33:15,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-09 08:33:15,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-12-09 08:33:15,606 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 9 [2020-12-09 08:33:15,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:15,606 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-12-09 08:33:15,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:33:15,606 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-12-09 08:33:15,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 08:33:15,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:15,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:15,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 08:33:15,809 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:15,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:15,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1181720057, now seen corresponding path program 1 times [2020-12-09 08:33:15,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:15,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065813472] [2020-12-09 08:33:15,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/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 08:33:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:15,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 08:33:15,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:15,953 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:15,953 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 08:33:15,956 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:15,969 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2020-12-09 08:33:15,972 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 08:33:15,974 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 08:33:15,975 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-12-09 08:33:15,976 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 08:33:15,988 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 08:33:16,061 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 08:33:16,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:16,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065813472] [2020-12-09 08:33:16,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:16,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:33:16,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942020463] [2020-12-09 08:33:16,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:33:16,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:16,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:33:16,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:33:16,062 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 5 states. [2020-12-09 08:33:16,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:16,219 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-12-09 08:33:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:33:16,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 08:33:16,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:16,220 INFO L225 Difference]: With dead ends: 67 [2020-12-09 08:33:16,220 INFO L226 Difference]: Without dead ends: 63 [2020-12-09 08:33:16,221 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 08:33:16,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-09 08:33:16,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 44. [2020-12-09 08:33:16,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-09 08:33:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-12-09 08:33:16,224 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 9 [2020-12-09 08:33:16,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:16,224 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-12-09 08:33:16,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:33:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-12-09 08:33:16,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 08:33:16,224 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:16,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:16,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 08:33:16,426 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:16,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:16,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1182786029, now seen corresponding path program 1 times [2020-12-09 08:33:16,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:16,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937280502] [2020-12-09 08:33:16,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/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 08:33:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:16,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 08:33:16,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:16,629 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 08:33:16,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:16,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937280502] [2020-12-09 08:33:16,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:16,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:33:16,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723286953] [2020-12-09 08:33:16,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:33:16,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:16,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:33:16,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:33:16,631 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 4 states. [2020-12-09 08:33:16,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:16,660 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-12-09 08:33:16,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:33:16,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 08:33:16,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:16,661 INFO L225 Difference]: With dead ends: 33 [2020-12-09 08:33:16,661 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 08:33:16,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:33:16,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 08:33:16,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-12-09 08:33:16,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 08:33:16,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-09 08:33:16,663 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2020-12-09 08:33:16,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:16,664 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-09 08:33:16,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:33:16,664 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-09 08:33:16,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 08:33:16,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:16,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:16,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 08:33:16,866 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:16,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:16,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1178992070, now seen corresponding path program 1 times [2020-12-09 08:33:16,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:16,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112493833] [2020-12-09 08:33:16,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/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 08:33:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:16,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 08:33:16,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:16,983 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 08:33:16,984 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:16,986 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:16,986 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:33:16,986 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 08:33:16,998 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 08:33:16,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:16,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112493833] [2020-12-09 08:33:16,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:16,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:33:16,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405174201] [2020-12-09 08:33:16,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:33:16,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:17,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:33:17,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:33:17,000 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 4 states. [2020-12-09 08:33:17,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:17,048 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-12-09 08:33:17,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:33:17,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 08:33:17,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:17,049 INFO L225 Difference]: With dead ends: 42 [2020-12-09 08:33:17,049 INFO L226 Difference]: Without dead ends: 42 [2020-12-09 08:33:17,049 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 08:33:17,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-09 08:33:17,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-12-09 08:33:17,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-09 08:33:17,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-12-09 08:33:17,051 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 10 [2020-12-09 08:33:17,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:17,052 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-12-09 08:33:17,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:33:17,052 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-12-09 08:33:17,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 08:33:17,052 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:17,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:17,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 08:33:17,254 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:17,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:17,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1178944307, now seen corresponding path program 1 times [2020-12-09 08:33:17,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:17,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992644341] [2020-12-09 08:33:17,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/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 08:33:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:17,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 08:33:17,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:17,325 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 08:33:17,326 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:17,328 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:17,328 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:33:17,328 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 08:33:17,357 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:17,357 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 08:33:17,361 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:17,368 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:17,373 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 08:33:17,373 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2020-12-09 08:33:17,427 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 08:33:17,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:17,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992644341] [2020-12-09 08:33:17,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:17,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:33:17,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81556626] [2020-12-09 08:33:17,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:33:17,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:17,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:33:17,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:33:17,429 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 4 states. [2020-12-09 08:33:17,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:17,478 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-12-09 08:33:17,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:33:17,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 08:33:17,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:17,480 INFO L225 Difference]: With dead ends: 41 [2020-12-09 08:33:17,480 INFO L226 Difference]: Without dead ends: 41 [2020-12-09 08:33:17,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:33:17,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-09 08:33:17,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2020-12-09 08:33:17,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 08:33:17,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-12-09 08:33:17,483 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 10 [2020-12-09 08:33:17,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:17,483 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-12-09 08:33:17,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:33:17,483 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-12-09 08:33:17,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 08:33:17,484 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:17,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:17,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 08:33:17,685 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:17,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:17,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1178944306, now seen corresponding path program 1 times [2020-12-09 08:33:17,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:17,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202758119] [2020-12-09 08:33:17,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/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 08:33:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:17,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 08:33:17,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:17,786 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 08:33:17,787 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:17,792 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:17,795 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 08:33:17,796 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:17,801 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:17,801 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:33:17,802 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:16 [2020-12-09 08:33:17,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 08:33:17,826 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 14 treesize of output 16 [2020-12-09 08:33:17,827 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:17,837 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:17,846 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:17,846 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-09 08:33:17,848 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:17,856 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:17,858 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:33:17,858 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:9 [2020-12-09 08:33:17,871 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 08:33:17,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:17,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202758119] [2020-12-09 08:33:17,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:17,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:33:17,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107041369] [2020-12-09 08:33:17,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:33:17,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:17,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:33:17,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:33:17,873 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2020-12-09 08:33:17,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:17,919 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-12-09 08:33:17,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:33:17,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 08:33:17,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:17,920 INFO L225 Difference]: With dead ends: 40 [2020-12-09 08:33:17,920 INFO L226 Difference]: Without dead ends: 40 [2020-12-09 08:33:17,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:33:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-09 08:33:17,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2020-12-09 08:33:17,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 08:33:17,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-12-09 08:33:17,922 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 10 [2020-12-09 08:33:17,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:17,922 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-12-09 08:33:17,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:33:17,923 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-12-09 08:33:17,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 08:33:17,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:17,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:18,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 08:33:18,125 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:18,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:18,126 INFO L82 PathProgramCache]: Analyzing trace with hash 889859920, now seen corresponding path program 1 times [2020-12-09 08:33:18,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:18,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124357405] [2020-12-09 08:33:18,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/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 08:33:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:18,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 08:33:18,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:18,335 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 08:33:18,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:18,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124357405] [2020-12-09 08:33:18,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:18,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 08:33:18,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409708026] [2020-12-09 08:33:18,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:33:18,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:18,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:33:18,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:33:18,338 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 5 states. [2020-12-09 08:33:18,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:18,368 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-12-09 08:33:18,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:33:18,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 08:33:18,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:18,369 INFO L225 Difference]: With dead ends: 33 [2020-12-09 08:33:18,369 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 08:33:18,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:33:18,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 08:33:18,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-12-09 08:33:18,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-09 08:33:18,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-12-09 08:33:18,371 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 13 [2020-12-09 08:33:18,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:18,371 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-12-09 08:33:18,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:33:18,371 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-12-09 08:33:18,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 08:33:18,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:18,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:18,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-09 08:33:18,572 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:18,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:18,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1815865709, now seen corresponding path program 1 times [2020-12-09 08:33:18,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:18,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244828212] [2020-12-09 08:33:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/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 08:33:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:18,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 08:33:18,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:18,625 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:18,625 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 08:33:18,627 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:18,640 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2020-12-09 08:33:18,641 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 08:33:18,642 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 08:33:18,642 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-12-09 08:33:18,643 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 08:33:18,650 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 08:33:20,841 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 08:33:20,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:20,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244828212] [2020-12-09 08:33:20,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:20,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 08:33:20,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165965322] [2020-12-09 08:33:20,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 08:33:20,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:20,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 08:33:20,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=36, Unknown=1, NotChecked=0, Total=56 [2020-12-09 08:33:20,842 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 8 states. [2020-12-09 08:33:23,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:23,137 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-12-09 08:33:23,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 08:33:23,137 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-09 08:33:23,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:23,138 INFO L225 Difference]: With dead ends: 35 [2020-12-09 08:33:23,138 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 08:33:23,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=24, Invalid=47, Unknown=1, NotChecked=0, Total=72 [2020-12-09 08:33:23,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 08:33:23,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2020-12-09 08:33:23,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 08:33:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-12-09 08:33:23,139 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 14 [2020-12-09 08:33:23,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:23,140 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-12-09 08:33:23,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 08:33:23,140 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-12-09 08:33:23,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 08:33:23,140 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:23,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:23,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-09 08:33:23,341 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:23,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1320771049, now seen corresponding path program 1 times [2020-12-09 08:33:23,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:23,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197360791] [2020-12-09 08:33:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/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 08:33:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:23,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 08:33:23,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:23,511 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 08:33:23,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:23,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197360791] [2020-12-09 08:33:23,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:23,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:33:23,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970515594] [2020-12-09 08:33:23,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:33:23,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:23,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:33:23,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:33:23,512 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 5 states. [2020-12-09 08:33:23,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:23,559 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-12-09 08:33:23,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:33:23,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-09 08:33:23,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:23,560 INFO L225 Difference]: With dead ends: 25 [2020-12-09 08:33:23,560 INFO L226 Difference]: Without dead ends: 25 [2020-12-09 08:33:23,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:33:23,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-09 08:33:23,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-12-09 08:33:23,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-09 08:33:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-12-09 08:33:23,561 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 14 [2020-12-09 08:33:23,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:23,562 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-12-09 08:33:23,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:33:23,562 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-12-09 08:33:23,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 08:33:23,562 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:23,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:23,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-09 08:33:23,763 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:23,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:23,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1320771048, now seen corresponding path program 1 times [2020-12-09 08:33:23,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:23,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182235312] [2020-12-09 08:33:23,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/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 08:33:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:23,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 08:33:23,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:23,884 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 08:33:23,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:23,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182235312] [2020-12-09 08:33:23,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:23,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:33:23,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069468375] [2020-12-09 08:33:23,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:33:23,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:23,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:33:23,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:33:23,885 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 5 states. [2020-12-09 08:33:23,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:23,959 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2020-12-09 08:33:23,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:33:23,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-09 08:33:23,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:23,960 INFO L225 Difference]: With dead ends: 26 [2020-12-09 08:33:23,960 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 08:33:23,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:33:23,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 08:33:23,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-12-09 08:33:23,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 08:33:23,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-12-09 08:33:23,963 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 14 [2020-12-09 08:33:23,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:23,963 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-12-09 08:33:23,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:33:23,963 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-12-09 08:33:23,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 08:33:23,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:23,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:24,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-12-09 08:33:24,164 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:24,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:24,164 INFO L82 PathProgramCache]: Analyzing trace with hash 2005782406, now seen corresponding path program 1 times [2020-12-09 08:33:24,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:24,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587363102] [2020-12-09 08:33:24,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-12-09 08:33:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:24,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 08:33:24,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:24,217 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 08:33:24,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:24,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587363102] [2020-12-09 08:33:24,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:24,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:33:24,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493766129] [2020-12-09 08:33:24,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:33:24,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:24,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:33:24,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:33:24,218 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 4 states. [2020-12-09 08:33:24,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:24,230 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-12-09 08:33:24,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:33:24,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-09 08:33:24,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:24,231 INFO L225 Difference]: With dead ends: 23 [2020-12-09 08:33:24,231 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 08:33:24,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:33:24,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 08:33:24,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 08:33:24,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 08:33:24,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2020-12-09 08:33:24,232 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 15 [2020-12-09 08:33:24,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:24,232 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2020-12-09 08:33:24,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:33:24,233 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-12-09 08:33:24,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 08:33:24,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:24,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:24,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-12-09 08:33:24,434 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:24,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:24,434 INFO L82 PathProgramCache]: Analyzing trace with hash 2005770458, now seen corresponding path program 1 times [2020-12-09 08:33:24,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:24,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154273250] [2020-12-09 08:33:24,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-12-09 08:33:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:24,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 08:33:24,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:24,601 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2020-12-09 08:33:24,601 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:24,603 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:24,604 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:33:24,604 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-12-09 08:33:24,626 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-09 08:33:24,627 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:24,632 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:24,633 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:33:24,633 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-09 08:33:24,644 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 08:33:24,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:24,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154273250] [2020-12-09 08:33:24,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:24,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 08:33:24,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772792167] [2020-12-09 08:33:24,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 08:33:24,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:24,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 08:33:24,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:33:24,645 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 8 states. [2020-12-09 08:33:24,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:24,764 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-12-09 08:33:24,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 08:33:24,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-12-09 08:33:24,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:24,765 INFO L225 Difference]: With dead ends: 22 [2020-12-09 08:33:24,765 INFO L226 Difference]: Without dead ends: 22 [2020-12-09 08:33:24,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-09 08:33:24,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-09 08:33:24,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-09 08:33:24,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 08:33:24,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2020-12-09 08:33:24,767 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 15 [2020-12-09 08:33:24,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:24,767 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2020-12-09 08:33:24,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 08:33:24,767 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2020-12-09 08:33:24,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 08:33:24,767 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:24,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:24,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-12-09 08:33:24,969 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:24,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:24,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2049342135, now seen corresponding path program 1 times [2020-12-09 08:33:24,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:24,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882743237] [2020-12-09 08:33:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-12-09 08:33:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:25,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 08:33:25,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:25,128 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2020-12-09 08:33:25,128 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:25,136 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:25,137 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:33:25,137 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:16 [2020-12-09 08:33:25,174 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-12-09 08:33:25,175 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:25,180 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:25,180 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:33:25,180 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:8 [2020-12-09 08:33:25,200 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 08:33:25,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:25,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882743237] [2020-12-09 08:33:25,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:25,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 08:33:25,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691275583] [2020-12-09 08:33:25,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 08:33:25,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:25,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 08:33:25,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-09 08:33:25,201 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 9 states. [2020-12-09 08:33:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:25,432 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-12-09 08:33:25,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 08:33:25,433 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-12-09 08:33:25,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:25,433 INFO L225 Difference]: With dead ends: 21 [2020-12-09 08:33:25,433 INFO L226 Difference]: Without dead ends: 21 [2020-12-09 08:33:25,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-12-09 08:33:25,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-09 08:33:25,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-09 08:33:25,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 08:33:25,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2020-12-09 08:33:25,434 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 16 [2020-12-09 08:33:25,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:25,434 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2020-12-09 08:33:25,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 08:33:25,434 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2020-12-09 08:33:25,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 08:33:25,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:25,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:25,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-12-09 08:33:25,636 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:25,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:25,637 INFO L82 PathProgramCache]: Analyzing trace with hash -894903172, now seen corresponding path program 1 times [2020-12-09 08:33:25,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:25,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407475888] [2020-12-09 08:33:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-12-09 08:33:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:25,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 08:33:25,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:25,718 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 08:33:25,719 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:25,725 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:25,726 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:33:25,726 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:14 [2020-12-09 08:33:25,760 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2020-12-09 08:33:25,761 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:25,766 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:25,767 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:33:25,767 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-12-09 08:33:25,788 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-12-09 08:33:25,789 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:25,790 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:25,790 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 08:33:25,790 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-12-09 08:33:25,800 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 08:33:25,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:25,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407475888] [2020-12-09 08:33:25,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:25,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 08:33:25,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131969176] [2020-12-09 08:33:25,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 08:33:25,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:25,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 08:33:25,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:33:25,802 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 8 states. [2020-12-09 08:33:25,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:25,943 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2020-12-09 08:33:25,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 08:33:25,944 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-09 08:33:25,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:25,944 INFO L225 Difference]: With dead ends: 20 [2020-12-09 08:33:25,944 INFO L226 Difference]: Without dead ends: 20 [2020-12-09 08:33:25,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-09 08:33:25,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-09 08:33:25,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-09 08:33:25,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 08:33:25,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2020-12-09 08:33:25,945 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 17 [2020-12-09 08:33:25,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:25,946 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2020-12-09 08:33:25,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 08:33:25,946 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2020-12-09 08:33:25,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 08:33:25,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:33:25,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:33:26,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-12-09 08:33:26,148 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 08:33:26,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:33:26,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1008486272, now seen corresponding path program 1 times [2020-12-09 08:33:26,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:33:26,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333502527] [2020-12-09 08:33:26,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2020-12-09 08:33:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:33:26,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-09 08:33:26,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:33:26,316 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:26,317 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 08:33:26,318 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:26,331 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2020-12-09 08:33:26,332 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 08:33:26,333 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 08:33:26,333 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-12-09 08:33:26,333 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 08:33:26,341 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 08:33:26,503 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2020-12-09 08:33:26,504 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:26,525 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:26,526 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 08:33:26,526 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:41, output treesize:36 [2020-12-09 08:33:26,615 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2020-12-09 08:33:26,616 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 08:33:26,626 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 08:33:26,627 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 08:33:26,627 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:30 [2020-12-09 08:33:28,768 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 08:33:28,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:33:28,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333502527] [2020-12-09 08:33:28,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:33:28,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 08:33:28,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546013358] [2020-12-09 08:33:28,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 08:33:28,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:33:28,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 08:33:28,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=82, Unknown=1, NotChecked=0, Total=110 [2020-12-09 08:33:28,770 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 11 states. [2020-12-09 08:33:31,101 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2020-12-09 08:33:31,303 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-09 08:33:31,496 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-12-09 08:33:33,601 WARN L197 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-12-09 08:33:33,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:33:33,620 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-12-09 08:33:33,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 08:33:33,620 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-12-09 08:33:33,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:33:33,621 INFO L225 Difference]: With dead ends: 19 [2020-12-09 08:33:33,621 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 08:33:33,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=64, Invalid=175, Unknown=1, NotChecked=0, Total=240 [2020-12-09 08:33:33,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 08:33:33,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 08:33:33,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 08:33:33,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 08:33:33,621 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-12-09 08:33:33,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:33:33,621 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 08:33:33,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 08:33:33,621 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 08:33:33,622 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 08:33:33,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-12-09 08:33:33,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:33:33 BoogieIcfgContainer [2020-12-09 08:33:33,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:33:33,833 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:33:33,834 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:33:33,834 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:33:33,835 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:33:13" (3/4) ... [2020-12-09 08:33:33,842 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 08:33:33,864 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-12-09 08:33:33,865 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 08:33:33,865 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 08:33:33,894 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9eeae275-548c-4627-9f63-99697b57bb4b/bin/utaipan/witness.graphml [2020-12-09 08:33:33,894 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:33:33,895 INFO L168 Benchmark]: Toolchain (without parser) took 20814.33 ms. Allocated memory was 60.8 MB in the beginning and 98.6 MB in the end (delta: 37.7 MB). Free memory was 38.8 MB in the beginning and 53.4 MB in the end (delta: -14.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:33:33,895 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 60.8 MB. Free memory was 43.9 MB in the beginning and 43.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:33:33,896 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.16 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 38.5 MB in the beginning and 49.6 MB in the end (delta: -11.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2020-12-09 08:33:33,896 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.30 ms. Allocated memory is still 81.8 MB. Free memory was 49.6 MB in the beginning and 47.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:33:33,897 INFO L168 Benchmark]: Boogie Preprocessor took 19.73 ms. Allocated memory is still 81.8 MB. Free memory was 47.2 MB in the beginning and 45.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:33:33,897 INFO L168 Benchmark]: RCFGBuilder took 308.27 ms. Allocated memory is still 81.8 MB. Free memory was 45.8 MB in the beginning and 49.6 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:33:33,897 INFO L168 Benchmark]: TraceAbstraction took 19916.19 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 49.1 MB in the beginning and 56.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-12-09 08:33:33,898 INFO L168 Benchmark]: Witness Printer took 60.93 ms. Allocated memory is still 98.6 MB. Free memory was 56.5 MB in the beginning and 53.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:33:33,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 60.8 MB. Free memory was 43.9 MB in the beginning and 43.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 468.16 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 38.5 MB in the beginning and 49.6 MB in the end (delta: -11.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.30 ms. Allocated memory is still 81.8 MB. Free memory was 49.6 MB in the beginning and 47.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.73 ms. Allocated memory is still 81.8 MB. Free memory was 47.2 MB in the beginning and 45.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 308.27 ms. Allocated memory is still 81.8 MB. Free memory was 45.8 MB in the beginning and 49.6 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19916.19 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 49.1 MB in the beginning and 56.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Witness Printer took 60.93 ms. Allocated memory is still 98.6 MB. Free memory was 56.5 MB in the beginning and 53.4 MB in the end (delta: 3.1 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: 774]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 790]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 774]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.8s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 464 SDtfs, 783 SDslu, 631 SDs, 0 SdLazy, 537 SolverSat, 38 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 232 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 18 MinimizatonAttempts, 116 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 200 ConstructedInterpolants, 46 QuantifiedInterpolants, 30358 SizeOfPredicates, 98 NumberOfNonLiveVariables, 977 ConjunctsInSsa, 149 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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...