./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 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8 --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 bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:11:52,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:11:52,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:11:52,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:11:52,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:11:52,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:11:52,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:11:52,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:11:52,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:11:52,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:11:52,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:11:52,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:11:52,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:11:52,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:11:52,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:11:52,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:11:52,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:11:52,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:11:52,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:11:52,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:11:52,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:11:52,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:11:52,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:11:52,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:11:52,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:11:52,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:11:52,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:11:52,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:11:52,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:11:52,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:11:52,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:11:52,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:11:52,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:11:52,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:11:52,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:11:52,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:11:52,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:11:52,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:11:52,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:11:52,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:11:52,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:11:52,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 02:11:52,714 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:11:52,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:11:52,716 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:11:52,716 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:11:52,716 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:11:52,717 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:11:52,717 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:11:52,717 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:11:52,717 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:11:52,718 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:11:52,719 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:11:52,719 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:11:52,719 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:11:52,719 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:11:52,720 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:11:52,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 02:11:52,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 02:11:52,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:11:52,721 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:11:52,721 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 02:11:52,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:11:52,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:11:52,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:11:52,722 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 02:11:52,722 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 02:11:52,722 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 02:11:52,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:11:52,724 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:11:52,724 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:11:52,725 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:11:52,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:11:52,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:11:52,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:11:52,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:11:52,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:11:52,726 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:11:52,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:11:52,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:11:52,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:11:52,727 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 [2021-11-07 02:11:53,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:11:53,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:11:53,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:11:53,034 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:11:53,035 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:11:53,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-11-07 02:11:53,109 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/data/8a600cdcf/1c38f8b2e29648c8be01080179452b2c/FLAGb0cc3ffd9 [2021-11-07 02:11:53,655 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:11:53,656 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-11-07 02:11:53,692 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/data/8a600cdcf/1c38f8b2e29648c8be01080179452b2c/FLAGb0cc3ffd9 [2021-11-07 02:11:53,916 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/data/8a600cdcf/1c38f8b2e29648c8be01080179452b2c [2021-11-07 02:11:53,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:11:53,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:11:53,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:11:53,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:11:53,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:11:53,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:11:53" (1/1) ... [2021-11-07 02:11:53,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b18d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:53, skipping insertion in model container [2021-11-07 02:11:53,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:11:53" (1/1) ... [2021-11-07 02:11:53,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:11:53,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:11:54,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:11:54,384 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:11:54,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1e2a0ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:54, skipping insertion in model container [2021-11-07 02:11:54,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:11:54,385 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:11:54,387 INFO L168 Benchmark]: Toolchain (without parser) took 466.59 ms. Allocated memory is still 100.7 MB. Free memory was 60.2 MB in the beginning and 73.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:11:54,388 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory is still 78.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:11:54,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 464.05 ms. Allocated memory is still 100.7 MB. Free memory was 60.1 MB in the beginning and 73.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:11:54,390 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory is still 78.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 464.05 ms. Allocated memory is still 100.7 MB. Free memory was 60.1 MB in the beginning and 73.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8 --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 bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:11:56,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:11:56,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:11:56,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:11:56,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:11:56,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:11:56,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:11:56,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:11:56,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:11:56,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:11:56,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:11:56,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:11:56,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:11:56,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:11:56,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:11:56,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:11:56,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:11:56,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:11:56,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:11:56,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:11:56,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:11:56,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:11:56,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:11:56,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:11:56,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:11:56,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:11:56,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:11:56,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:11:56,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:11:56,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:11:56,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:11:56,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:11:56,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:11:56,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:11:56,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:11:56,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:11:56,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:11:56,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:11:56,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:11:56,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:11:56,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:11:56,832 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-07 02:11:56,876 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:11:56,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:11:56,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:11:56,878 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:11:56,878 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:11:56,878 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:11:56,879 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:11:56,879 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:11:56,879 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:11:56,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 02:11:56,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 02:11:56,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:11:56,882 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:11:56,882 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 02:11:56,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:11:56,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:11:56,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:11:56,883 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 02:11:56,883 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 02:11:56,884 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 02:11:56,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:11:56,884 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:11:56,884 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:11:56,885 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:11:56,885 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:11:56,885 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:11:56,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:11:56,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:11:56,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:11:56,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:11:56,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:11:56,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:11:56,887 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:11:56,887 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:11:56,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:11:56,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:11:56,888 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 [2021-11-07 02:11:57,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:11:57,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:11:57,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:11:57,308 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:11:57,309 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:11:57,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-11-07 02:11:57,387 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/data/4b9aa7aa2/9e0a214197074722810d87b1f0279b14/FLAG511f7302d [2021-11-07 02:11:58,088 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:11:58,089 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-11-07 02:11:58,107 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/data/4b9aa7aa2/9e0a214197074722810d87b1f0279b14/FLAG511f7302d [2021-11-07 02:11:58,322 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/data/4b9aa7aa2/9e0a214197074722810d87b1f0279b14 [2021-11-07 02:11:58,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:11:58,326 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:11:58,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:11:58,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:11:58,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:11:58,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:11:58" (1/1) ... [2021-11-07 02:11:58,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e782b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:58, skipping insertion in model container [2021-11-07 02:11:58,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:11:58" (1/1) ... [2021-11-07 02:11:58,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:11:58,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:11:58,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:11:58,903 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:11:58,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:11:59,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:11:59,041 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:11:59,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:11:59,159 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:11:59,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:59 WrapperNode [2021-11-07 02:11:59,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:11:59,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:11:59,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:11:59,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:11:59,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:59" (1/1) ... [2021-11-07 02:11:59,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:59" (1/1) ... [2021-11-07 02:11:59,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:11:59,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:11:59,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:11:59,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:11:59,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:59" (1/1) ... [2021-11-07 02:11:59,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:59" (1/1) ... [2021-11-07 02:11:59,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:59" (1/1) ... [2021-11-07 02:11:59,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:59" (1/1) ... [2021-11-07 02:11:59,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:59" (1/1) ... [2021-11-07 02:11:59,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:59" (1/1) ... [2021-11-07 02:11:59,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:59" (1/1) ... [2021-11-07 02:11:59,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:11:59,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:11:59,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:11:59,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:11:59,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:59" (1/1) ... [2021-11-07 02:11:59,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:11:59,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:11:59,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:11:59,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:11:59,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:11:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:11:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:11:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:11:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:11:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:11:59,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:11:59,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:11:59,805 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:11:59,805 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-07 02:11:59,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:11:59 BoogieIcfgContainer [2021-11-07 02:11:59,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:11:59,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:11:59,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:11:59,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:11:59,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:11:58" (1/3) ... [2021-11-07 02:11:59,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204de9ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:11:59, skipping insertion in model container [2021-11-07 02:11:59,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:59" (2/3) ... [2021-11-07 02:11:59,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204de9ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:11:59, skipping insertion in model container [2021-11-07 02:11:59,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:11:59" (3/3) ... [2021-11-07 02:11:59,817 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test7-2.i [2021-11-07 02:11:59,823 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:11:59,824 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-07 02:11:59,871 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:11:59,877 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:11:59,877 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-07 02:11:59,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:59,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 02:11:59,896 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:11:59,897 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:11:59,898 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-07 02:11:59,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:11:59,903 INFO L85 PathProgramCache]: Analyzing trace with hash 119408646, now seen corresponding path program 1 times [2021-11-07 02:11:59,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:11:59,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715435560] [2021-11-07 02:11:59,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:59,916 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:11:59,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:11:59,919 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:11:59,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:12:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:00,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:12:00,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:00,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:00,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:00,165 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:00,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715435560] [2021-11-07 02:12:00,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715435560] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:00,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:00,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:12:00,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409596965] [2021-11-07 02:12:00,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:12:00,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:00,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:12:00,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:12:00,197 INFO L87 Difference]: Start difference. First operand has 35 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:00,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:00,293 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2021-11-07 02:12:00,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:12:00,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 02:12:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:00,307 INFO L225 Difference]: With dead ends: 67 [2021-11-07 02:12:00,307 INFO L226 Difference]: Without dead ends: 63 [2021-11-07 02:12:00,309 INFO L786 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 [2021-11-07 02:12:00,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-07 02:12:00,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 35. [2021-11-07 02:12:00,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.625) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:00,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-11-07 02:12:00,350 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2021-11-07 02:12:00,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:00,351 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-11-07 02:12:00,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:00,351 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-11-07 02:12:00,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 02:12:00,352 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:00,353 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:00,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:00,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:00,566 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-07 02:12:00,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash 119443416, now seen corresponding path program 1 times [2021-11-07 02:12:00,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:00,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161943681] [2021-11-07 02:12:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:00,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:00,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:00,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:00,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:12:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:00,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:12:00,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:00,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:00,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:00,736 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:00,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161943681] [2021-11-07 02:12:00,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161943681] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:00,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:00,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:12:00,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331119499] [2021-11-07 02:12:00,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:12:00,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:00,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:12:00,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:12:00,740 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:00,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:00,768 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-11-07 02:12:00,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:12:00,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 02:12:00,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:00,771 INFO L225 Difference]: With dead ends: 34 [2021-11-07 02:12:00,772 INFO L226 Difference]: Without dead ends: 34 [2021-11-07 02:12:00,773 INFO L786 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 [2021-11-07 02:12:00,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-07 02:12:00,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-07 02:12:00,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-11-07 02:12:00,785 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 8 [2021-11-07 02:12:00,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:00,786 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-11-07 02:12:00,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:00,786 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-11-07 02:12:00,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 02:12:00,793 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:00,793 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:00,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:01,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:01,015 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-07 02:12:01,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:01,016 INFO L85 PathProgramCache]: Analyzing trace with hash 176666948, now seen corresponding path program 1 times [2021-11-07 02:12:01,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:01,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604252720] [2021-11-07 02:12:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:01,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:01,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:01,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:01,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:12:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:01,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:12:01,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:01,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:01,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:01,242 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:01,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604252720] [2021-11-07 02:12:01,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604252720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:01,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:01,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:12:01,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186525608] [2021-11-07 02:12:01,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:12:01,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:01,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:12:01,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:12:01,245 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:01,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:01,331 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2021-11-07 02:12:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:12:01,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 02:12:01,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:01,333 INFO L225 Difference]: With dead ends: 47 [2021-11-07 02:12:01,333 INFO L226 Difference]: Without dead ends: 47 [2021-11-07 02:12:01,334 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:12:01,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-07 02:12:01,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2021-11-07 02:12:01,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:01,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-11-07 02:12:01,338 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 8 [2021-11-07 02:12:01,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:01,339 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-11-07 02:12:01,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:01,339 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-11-07 02:12:01,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 02:12:01,339 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:01,340 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:01,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:01,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:01,559 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-07 02:12:01,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:01,560 INFO L85 PathProgramCache]: Analyzing trace with hash -592221333, now seen corresponding path program 1 times [2021-11-07 02:12:01,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:01,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848673407] [2021-11-07 02:12:01,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:01,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:01,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:01,562 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:01,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:12:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:01,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:12:01,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:01,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:01,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:01,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:01,832 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:01,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848673407] [2021-11-07 02:12:01,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848673407] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:01,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:01,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-07 02:12:01,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767170395] [2021-11-07 02:12:01,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:12:01,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:01,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:12:01,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:12:01,835 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:01,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:01,965 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-11-07 02:12:01,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:12:01,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 02:12:01,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:01,967 INFO L225 Difference]: With dead ends: 63 [2021-11-07 02:12:01,967 INFO L226 Difference]: Without dead ends: 63 [2021-11-07 02:12:01,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:12:01,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-07 02:12:01,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 35. [2021-11-07 02:12:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.5) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-11-07 02:12:01,972 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 9 [2021-11-07 02:12:01,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:01,972 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-11-07 02:12:01,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:01,972 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-11-07 02:12:01,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 02:12:01,973 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:01,973 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:01,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:02,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:02,174 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-07 02:12:02,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:02,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1181720057, now seen corresponding path program 1 times [2021-11-07 02:12:02,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:02,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693526295] [2021-11-07 02:12:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:02,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:02,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:02,177 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:02,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:12:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:02,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:12:02,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:02,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:02,466 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:02,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693526295] [2021-11-07 02:12:02,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693526295] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:02,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:02,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 02:12:02,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599336388] [2021-11-07 02:12:02,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:12:02,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:02,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:12:02,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:12:02,470 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:02,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:02,651 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2021-11-07 02:12:02,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:12:02,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 02:12:02,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:02,654 INFO L225 Difference]: With dead ends: 62 [2021-11-07 02:12:02,654 INFO L226 Difference]: Without dead ends: 58 [2021-11-07 02:12:02,654 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:12:02,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-07 02:12:02,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 43. [2021-11-07 02:12:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:02,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2021-11-07 02:12:02,659 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 9 [2021-11-07 02:12:02,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:02,660 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2021-11-07 02:12:02,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:02,660 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2021-11-07 02:12:02,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 02:12:02,661 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:02,661 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:02,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:02,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:02,872 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-07 02:12:02,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:02,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1178992070, now seen corresponding path program 1 times [2021-11-07 02:12:02,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:02,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370631302] [2021-11-07 02:12:02,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:02,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:02,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:02,874 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:02,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:12:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:02,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:12:02,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:02,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:12:03,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:03,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:03,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:03,065 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:03,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370631302] [2021-11-07 02:12:03,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [370631302] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:03,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:03,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:12:03,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346880997] [2021-11-07 02:12:03,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:12:03,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:03,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:12:03,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:12:03,068 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:03,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:03,152 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2021-11-07 02:12:03,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:12:03,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-07 02:12:03,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:03,154 INFO L225 Difference]: With dead ends: 58 [2021-11-07 02:12:03,154 INFO L226 Difference]: Without dead ends: 58 [2021-11-07 02:12:03,154 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:12:03,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-07 02:12:03,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2021-11-07 02:12:03,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:03,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2021-11-07 02:12:03,158 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 10 [2021-11-07 02:12:03,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:03,158 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2021-11-07 02:12:03,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:03,162 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2021-11-07 02:12:03,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 02:12:03,164 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:03,164 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:03,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:03,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:03,373 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-07 02:12:03,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:03,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1178944307, now seen corresponding path program 1 times [2021-11-07 02:12:03,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:03,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110422076] [2021-11-07 02:12:03,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:03,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:03,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:03,379 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:03,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:12:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:03,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:12:03,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:03,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:12:03,495 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-07 02:12:03,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-11-07 02:12:03,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:03,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:03,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:03,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:03,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110422076] [2021-11-07 02:12:03,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110422076] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:03,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:03,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:12:03,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389785184] [2021-11-07 02:12:03,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:12:03,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:03,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:12:03,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:12:03,605 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:03,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:03,640 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2021-11-07 02:12:03,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:12:03,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-07 02:12:03,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:03,641 INFO L225 Difference]: With dead ends: 46 [2021-11-07 02:12:03,642 INFO L226 Difference]: Without dead ends: 46 [2021-11-07 02:12:03,642 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:12:03,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-07 02:12:03,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-11-07 02:12:03,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2021-11-07 02:12:03,646 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 10 [2021-11-07 02:12:03,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:03,647 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2021-11-07 02:12:03,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:03,647 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2021-11-07 02:12:03,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 02:12:03,648 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:03,648 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:03,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:03,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:03,862 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-07 02:12:03,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:03,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1178944306, now seen corresponding path program 1 times [2021-11-07 02:12:03,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:03,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402560734] [2021-11-07 02:12:03,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:03,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:03,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:03,864 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:03,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:12:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:03,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:12:03,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:03,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:12:04,000 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 02:12:04,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-07 02:12:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:04,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:04,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:04,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402560734] [2021-11-07 02:12:04,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402560734] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:04,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:04,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 02:12:04,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207768024] [2021-11-07 02:12:04,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:12:04,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:04,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:12:04,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:12:04,350 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:04,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:04,375 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2021-11-07 02:12:04,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:12:04,376 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-07 02:12:04,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:04,377 INFO L225 Difference]: With dead ends: 44 [2021-11-07 02:12:04,377 INFO L226 Difference]: Without dead ends: 44 [2021-11-07 02:12:04,377 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:12:04,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-07 02:12:04,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-11-07 02:12:04,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 43 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:04,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2021-11-07 02:12:04,381 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 10 [2021-11-07 02:12:04,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:04,381 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2021-11-07 02:12:04,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:04,381 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2021-11-07 02:12:04,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 02:12:04,382 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:04,382 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:04,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:04,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:04,592 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-07 02:12:04,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:04,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1988338696, now seen corresponding path program 1 times [2021-11-07 02:12:04,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:04,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588255541] [2021-11-07 02:12:04,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:04,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:04,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:04,593 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:04,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:12:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:04,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:12:04,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:04,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:04,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:04,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:04,790 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:04,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588255541] [2021-11-07 02:12:04,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588255541] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:04,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:04,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:12:04,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257140724] [2021-11-07 02:12:04,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:12:04,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:04,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:12:04,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:12:04,793 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:04,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:04,825 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-11-07 02:12:04,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:12:04,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-07 02:12:04,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:04,827 INFO L225 Difference]: With dead ends: 32 [2021-11-07 02:12:04,827 INFO L226 Difference]: Without dead ends: 30 [2021-11-07 02:12:04,827 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:12:04,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-07 02:12:04,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-07 02:12:04,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:04,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-11-07 02:12:04,832 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 10 [2021-11-07 02:12:04,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:04,833 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-11-07 02:12:04,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:04,833 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-11-07 02:12:04,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 02:12:04,835 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:04,835 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:04,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:05,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:05,046 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-07 02:12:05,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:05,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1815865709, now seen corresponding path program 1 times [2021-11-07 02:12:05,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:05,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17946385] [2021-11-07 02:12:05,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:05,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:05,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:05,049 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:05,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:12:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:05,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:12:05,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:07,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:07,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:11,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:11,796 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:11,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17946385] [2021-11-07 02:12:11,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17946385] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:11,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:11,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-07 02:12:11,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903505735] [2021-11-07 02:12:11,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 02:12:11,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:11,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 02:12:11,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=99, Unknown=3, NotChecked=0, Total=132 [2021-11-07 02:12:11,799 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:14,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:14,015 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-11-07 02:12:14,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:12:14,016 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-07 02:12:14,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:14,016 INFO L225 Difference]: With dead ends: 33 [2021-11-07 02:12:14,016 INFO L226 Difference]: Without dead ends: 26 [2021-11-07 02:12:14,017 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=44, Invalid=135, Unknown=3, NotChecked=0, Total=182 [2021-11-07 02:12:14,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-07 02:12:14,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-11-07 02:12:14,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-11-07 02:12:14,019 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 14 [2021-11-07 02:12:14,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:14,019 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-11-07 02:12:14,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:14,019 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-11-07 02:12:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 02:12:14,020 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:14,020 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:14,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:14,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:14,221 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-07 02:12:14,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:14,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1320771049, now seen corresponding path program 1 times [2021-11-07 02:12:14,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:14,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625320668] [2021-11-07 02:12:14,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:14,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:14,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:14,223 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:14,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:12:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:14,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:12:14,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:14,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:14,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:14,492 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-07 02:12:14,493 INFO L388 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 22 treesize of output 21 [2021-11-07 02:12:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:14,537 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:14,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625320668] [2021-11-07 02:12:14,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625320668] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:14,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:14,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:12:14,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456363865] [2021-11-07 02:12:14,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:12:14,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:14,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:12:14,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:12:14,539 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:14,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:14,608 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-11-07 02:12:14,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:12:14,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-07 02:12:14,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:14,609 INFO L225 Difference]: With dead ends: 25 [2021-11-07 02:12:14,609 INFO L226 Difference]: Without dead ends: 25 [2021-11-07 02:12:14,609 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:12:14,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-07 02:12:14,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-11-07 02:12:14,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.263157894736842) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:14,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-11-07 02:12:14,611 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 14 [2021-11-07 02:12:14,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:14,612 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-11-07 02:12:14,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:14,612 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-11-07 02:12:14,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 02:12:14,612 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:14,612 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:14,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:14,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:14,822 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-07 02:12:14,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:14,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1320771048, now seen corresponding path program 1 times [2021-11-07 02:12:14,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:14,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860986503] [2021-11-07 02:12:14,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:14,823 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:14,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:14,824 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:14,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:12:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:14,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 02:12:14,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:15,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:15,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:15,344 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:12:15,344 INFO L388 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 22 treesize of output 26 [2021-11-07 02:12:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:15,714 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:15,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860986503] [2021-11-07 02:12:15,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860986503] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:15,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:15,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 02:12:15,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022571467] [2021-11-07 02:12:15,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:12:15,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:15,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:12:15,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:12:15,715 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:15,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:15,830 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2021-11-07 02:12:15,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:12:15,831 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-07 02:12:15,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:15,831 INFO L225 Difference]: With dead ends: 26 [2021-11-07 02:12:15,831 INFO L226 Difference]: Without dead ends: 26 [2021-11-07 02:12:15,831 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:12:15,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-07 02:12:15,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2021-11-07 02:12:15,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:15,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-11-07 02:12:15,833 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 14 [2021-11-07 02:12:15,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:15,834 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-11-07 02:12:15,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:15,834 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-11-07 02:12:15,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 02:12:15,834 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:15,834 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:15,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:16,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:16,035 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-07 02:12:16,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:16,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2005782406, now seen corresponding path program 1 times [2021-11-07 02:12:16,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:16,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613874260] [2021-11-07 02:12:16,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:16,036 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:16,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:16,037 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:16,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:12:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:16,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:12:16,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:16,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:16,278 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:16,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613874260] [2021-11-07 02:12:16,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613874260] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:16,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:16,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:12:16,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041285982] [2021-11-07 02:12:16,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:12:16,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:16,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:12:16,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:12:16,280 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:16,305 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-11-07 02:12:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:12:16,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-07 02:12:16,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:16,307 INFO L225 Difference]: With dead ends: 23 [2021-11-07 02:12:16,307 INFO L226 Difference]: Without dead ends: 23 [2021-11-07 02:12:16,307 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:12:16,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-07 02:12:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-07 02:12:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 22 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2021-11-07 02:12:16,315 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 15 [2021-11-07 02:12:16,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:16,316 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2021-11-07 02:12:16,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:16,317 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2021-11-07 02:12:16,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 02:12:16,321 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:16,321 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:16,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:16,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:16,531 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-07 02:12:16,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:16,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2005770458, now seen corresponding path program 1 times [2021-11-07 02:12:16,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:16,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442137128] [2021-11-07 02:12:16,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:16,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:16,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:16,533 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:16,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 02:12:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:16,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 02:12:16,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:16,822 INFO L388 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 [2021-11-07 02:12:16,871 INFO L388 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 [2021-11-07 02:12:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:16,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:16,918 INFO L388 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 28 treesize of output 24 [2021-11-07 02:12:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:17,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:17,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442137128] [2021-11-07 02:12:17,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442137128] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:17,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:17,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-07 02:12:17,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042695688] [2021-11-07 02:12:17,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:12:17,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:17,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:12:17,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:12:17,035 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:17,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:17,185 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-11-07 02:12:17,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:12:17,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-07 02:12:17,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:17,187 INFO L225 Difference]: With dead ends: 22 [2021-11-07 02:12:17,187 INFO L226 Difference]: Without dead ends: 22 [2021-11-07 02:12:17,187 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:12:17,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-07 02:12:17,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-07 02:12:17,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:17,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2021-11-07 02:12:17,189 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 15 [2021-11-07 02:12:17,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:17,189 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2021-11-07 02:12:17,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:17,189 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2021-11-07 02:12:17,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 02:12:17,190 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:17,190 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:17,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:17,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:17,391 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-07 02:12:17,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:17,391 INFO L85 PathProgramCache]: Analyzing trace with hash 2049342135, now seen corresponding path program 1 times [2021-11-07 02:12:17,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:17,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351995305] [2021-11-07 02:12:17,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:17,392 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:17,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:17,393 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:17,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:12:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:17,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 02:12:17,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:17,799 INFO L388 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 19 treesize of output 15 [2021-11-07 02:12:17,889 INFO L388 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 [2021-11-07 02:12:17,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:17,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:18,025 INFO L388 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 28 treesize of output 24 [2021-11-07 02:12:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:18,287 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:18,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351995305] [2021-11-07 02:12:18,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351995305] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:18,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:18,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-07 02:12:18,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383548445] [2021-11-07 02:12:18,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 02:12:18,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:18,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 02:12:18,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-07 02:12:18,288 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:18,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:18,629 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2021-11-07 02:12:18,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:12:18,630 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 02:12:18,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:18,631 INFO L225 Difference]: With dead ends: 21 [2021-11-07 02:12:18,631 INFO L226 Difference]: Without dead ends: 21 [2021-11-07 02:12:18,631 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-11-07 02:12:18,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-07 02:12:18,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-07 02:12:18,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 20 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:18,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2021-11-07 02:12:18,633 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 16 [2021-11-07 02:12:18,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:18,633 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2021-11-07 02:12:18,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:18,634 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2021-11-07 02:12:18,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 02:12:18,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:18,635 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:18,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:18,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:18,843 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-07 02:12:18,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:18,844 INFO L85 PathProgramCache]: Analyzing trace with hash -894903172, now seen corresponding path program 1 times [2021-11-07 02:12:18,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:18,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139058429] [2021-11-07 02:12:18,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:18,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:18,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:18,846 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:18,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 02:12:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:19,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 02:12:19,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:19,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:12:19,231 INFO L388 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 20 treesize of output 16 [2021-11-07 02:12:19,276 INFO L388 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 20 treesize of output 12 [2021-11-07 02:12:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:19,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:19,354 INFO L388 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 38 treesize of output 34 [2021-11-07 02:12:19,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:19,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:19,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139058429] [2021-11-07 02:12:19,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139058429] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:19,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:19,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-07 02:12:19,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015428398] [2021-11-07 02:12:19,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 02:12:19,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:19,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 02:12:19,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:12:19,641 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:19,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:19,850 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2021-11-07 02:12:19,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:12:19,851 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-07 02:12:19,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:19,851 INFO L225 Difference]: With dead ends: 20 [2021-11-07 02:12:19,852 INFO L226 Difference]: Without dead ends: 20 [2021-11-07 02:12:19,852 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:12:19,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-07 02:12:19,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-07 02:12:19,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0) internal successors, (19), 19 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:19,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2021-11-07 02:12:19,854 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 17 [2021-11-07 02:12:19,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:19,854 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2021-11-07 02:12:19,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:19,854 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2021-11-07 02:12:19,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 02:12:19,855 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:19,855 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:19,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:20,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:20,055 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-07 02:12:20,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:20,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1008486272, now seen corresponding path program 1 times [2021-11-07 02:12:20,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:20,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577932343] [2021-11-07 02:12:20,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:20,056 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:20,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:20,057 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:20,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 02:12:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:20,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 02:12:20,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:20,563 INFO L388 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 33 treesize of output 29 [2021-11-07 02:12:20,698 INFO L388 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 39 treesize of output 27 [2021-11-07 02:12:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:22,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:25,179 INFO L388 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 48 treesize of output 44 [2021-11-07 02:12:46,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:46,641 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:46,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577932343] [2021-11-07 02:12:46,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577932343] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:46,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:46,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 17 [2021-11-07 02:12:46,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783243806] [2021-11-07 02:12:46,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 02:12:46,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:46,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 02:12:46,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=256, Unknown=8, NotChecked=0, Total=306 [2021-11-07 02:12:46,644 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:50,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:50,013 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-11-07 02:12:50,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:12:50,014 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-07 02:12:50,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:50,015 INFO L225 Difference]: With dead ends: 19 [2021-11-07 02:12:50,015 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 02:12:50,015 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=94, Invalid=404, Unknown=8, NotChecked=0, Total=506 [2021-11-07 02:12:50,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 02:12:50,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 02:12:50,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 02:12:50,016 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-11-07 02:12:50,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:50,016 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 02:12:50,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:50,017 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 02:12:50,017 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 02:12:50,020 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-11-07 02:12:50,021 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-11-07 02:12:50,021 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 02:12:50,022 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 02:12:50,022 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 02:12:50,022 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-11-07 02:12:50,022 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-11-07 02:12:50,022 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 02:12:50,022 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 02:12:50,023 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 02:12:50,023 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-11-07 02:12:50,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:50,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:50,238 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:50,239 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:12:50,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:12:50 BoogieIcfgContainer [2021-11-07 02:12:50,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:12:50,244 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:12:50,244 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:12:50,244 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:12:50,245 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:11:59" (3/4) ... [2021-11-07 02:12:50,248 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 02:12:50,258 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-07 02:12:50,258 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 02:12:50,259 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 02:12:50,304 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 02:12:50,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:12:50,305 INFO L168 Benchmark]: Toolchain (without parser) took 51978.35 ms. Allocated memory was 67.1 MB in the beginning and 111.1 MB in the end (delta: 44.0 MB). Free memory was 44.6 MB in the beginning and 81.7 MB in the end (delta: -37.1 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-11-07 02:12:50,305 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 67.1 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:12:50,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 832.72 ms. Allocated memory is still 67.1 MB. Free memory was 44.5 MB in the beginning and 31.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:12:50,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.35 ms. Allocated memory is still 67.1 MB. Free memory was 31.4 MB in the beginning and 48.6 MB in the end (delta: -17.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:12:50,306 INFO L168 Benchmark]: Boogie Preprocessor took 28.49 ms. Allocated memory is still 67.1 MB. Free memory was 48.6 MB in the beginning and 47.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:12:50,306 INFO L168 Benchmark]: RCFGBuilder took 546.33 ms. Allocated memory is still 67.1 MB. Free memory was 47.1 MB in the beginning and 34.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:12:50,307 INFO L168 Benchmark]: TraceAbstraction took 50433.65 ms. Allocated memory was 67.1 MB in the beginning and 111.1 MB in the end (delta: 44.0 MB). Free memory was 34.2 MB in the beginning and 84.7 MB in the end (delta: -50.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:12:50,307 INFO L168 Benchmark]: Witness Printer took 60.07 ms. Allocated memory is still 111.1 MB. Free memory was 83.8 MB in the beginning and 81.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:12:50,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 67.1 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 832.72 ms. Allocated memory is still 67.1 MB. Free memory was 44.5 MB in the beginning and 31.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.35 ms. Allocated memory is still 67.1 MB. Free memory was 31.4 MB in the beginning and 48.6 MB in the end (delta: -17.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.49 ms. Allocated memory is still 67.1 MB. Free memory was 48.6 MB in the beginning and 47.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 546.33 ms. Allocated memory is still 67.1 MB. Free memory was 47.1 MB in the beginning and 34.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 50433.65 ms. Allocated memory was 67.1 MB in the beginning and 111.1 MB in the end (delta: 44.0 MB). Free memory was 34.2 MB in the beginning and 84.7 MB in the end (delta: -50.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 60.07 ms. Allocated memory is still 111.1 MB. Free memory was 83.8 MB in the beginning and 81.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 774]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds 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: 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 - 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]: 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]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 790]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 50.3s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 418 SDtfs, 855 SDslu, 725 SDs, 0 SdLazy, 599 SolverSat, 34 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 413 GetRequests, 279 SyntacticMatches, 7 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 33.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=6, InterpolantAutomatonStates: 103, 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, 17 MinimizatonAttempts, 100 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 37.2s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 378 ConstructedInterpolants, 25 QuantifiedInterpolants, 3799 SizeOfPredicates, 94 NumberOfNonLiveVariables, 895 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 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 - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-07 02:12:50,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8914221-3561-4ca7-ac1a-dd0f3f622491/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE