./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.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_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:31:21,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:31:21,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:31:21,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:31:21,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:31:21,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:31:21,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:31:21,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:31:21,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:31:21,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:31:21,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:31:21,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:31:21,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:31:21,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:31:21,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:31:21,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:31:21,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:31:21,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:31:21,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:31:21,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:31:21,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:31:21,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:31:21,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:31:21,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:31:21,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:31:21,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:31:21,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:31:21,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:31:21,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:31:21,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:31:21,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:31:21,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:31:21,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:31:21,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:31:21,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:31:21,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:31:21,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:31:21,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:31:21,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:31:21,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:31:21,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:31:21,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-07 07:31:21,801 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:31:21,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:31:21,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:31:21,802 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:31:21,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:31:21,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:31:21,803 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:31:21,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:31:21,804 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:31:21,804 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:31:21,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:31:21,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:31:21,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:31:21,805 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 07:31:21,805 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 07:31:21,806 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 07:31:21,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:31:21,806 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 07:31:21,806 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:31:21,807 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:31:21,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:31:21,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:31:21,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:31:21,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:31:21,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:31:21,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:31:21,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:31:21,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:31:21,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:31:21,809 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 [2021-11-07 07:31:22,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:31:22,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:31:22,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:31:22,100 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:31:22,102 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:31:22,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-11-07 07:31:22,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/data/2f41fe085/1545a238a5bf4ee294144b492dab789a/FLAG5dbf0c876 [2021-11-07 07:31:22,848 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:31:22,849 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-11-07 07:31:22,864 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/data/2f41fe085/1545a238a5bf4ee294144b492dab789a/FLAG5dbf0c876 [2021-11-07 07:31:23,095 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/data/2f41fe085/1545a238a5bf4ee294144b492dab789a [2021-11-07 07:31:23,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:31:23,099 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 07:31:23,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:31:23,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:31:23,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:31:23,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:31:23" (1/1) ... [2021-11-07 07:31:23,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df7d113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:23, skipping insertion in model container [2021-11-07 07:31:23,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:31:23" (1/1) ... [2021-11-07 07:31:23,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:31:23,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:31:23,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:31:23,640 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 07:31:23,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@c1c3ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:23, skipping insertion in model container [2021-11-07 07:31:23,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:31:23,641 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-07 07:31:23,644 INFO L168 Benchmark]: Toolchain (without parser) took 542.84 ms. Allocated memory is still 109.1 MB. Free memory was 80.6 MB in the beginning and 67.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 07:31:23,645 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory was 55.0 MB in the beginning and 54.9 MB in the end (delta: 41.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:31:23,646 INFO L168 Benchmark]: CACSL2BoogieTranslator took 540.06 ms. Allocated memory is still 109.1 MB. Free memory was 80.4 MB in the beginning and 67.3 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 07:31:23,648 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory was 55.0 MB in the beginning and 54.9 MB in the end (delta: 41.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 540.06 ms. Allocated memory is still 109.1 MB. Free memory was 80.4 MB in the beginning and 67.3 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- 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_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:31:25,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:31:25,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:31:25,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:31:25,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:31:25,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:31:25,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:31:25,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:31:25,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:31:25,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:31:25,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:31:25,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:31:25,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:31:25,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:31:25,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:31:25,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:31:25,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:31:26,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:31:26,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:31:26,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:31:26,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:31:26,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:31:26,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:31:26,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:31:26,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:31:26,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:31:26,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:31:26,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:31:26,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:31:26,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:31:26,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:31:26,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:31:26,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:31:26,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:31:26,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:31:26,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:31:26,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:31:26,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:31:26,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:31:26,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:31:26,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:31:26,064 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-07 07:31:26,109 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:31:26,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:31:26,110 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:31:26,110 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:31:26,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:31:26,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:31:26,113 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:31:26,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:31:26,113 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:31:26,114 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:31:26,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:31:26,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:31:26,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:31:26,116 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 07:31:26,116 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 07:31:26,116 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 07:31:26,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:31:26,117 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 07:31:26,117 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 07:31:26,117 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 07:31:26,117 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:31:26,118 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:31:26,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:31:26,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:31:26,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:31:26,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:31:26,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:31:26,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:31:26,120 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 07:31:26,120 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 07:31:26,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:31:26,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 07:31:26,121 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_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 [2021-11-07 07:31:26,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:31:26,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:31:26,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:31:26,548 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:31:26,549 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:31:26,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-11-07 07:31:26,631 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/data/d030f91c2/680b8d2b06924b4fa20509d1acfb965e/FLAG3f1a0fc60 [2021-11-07 07:31:27,313 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:31:27,315 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-11-07 07:31:27,337 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/data/d030f91c2/680b8d2b06924b4fa20509d1acfb965e/FLAG3f1a0fc60 [2021-11-07 07:31:27,542 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/data/d030f91c2/680b8d2b06924b4fa20509d1acfb965e [2021-11-07 07:31:27,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:31:27,547 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 07:31:27,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:31:27,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:31:27,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:31:27,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:31:27" (1/1) ... [2021-11-07 07:31:27,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa9fa16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:27, skipping insertion in model container [2021-11-07 07:31:27,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:31:27" (1/1) ... [2021-11-07 07:31:27,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:31:27,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:31:28,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:31:28,205 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 07:31:28,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:31:28,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:31:28,289 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:31:28,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:31:28,433 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:31:28,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:28 WrapperNode [2021-11-07 07:31:28,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:31:28,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:31:28,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:31:28,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:31:28,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:28" (1/1) ... [2021-11-07 07:31:28,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:28" (1/1) ... [2021-11-07 07:31:28,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:28" (1/1) ... [2021-11-07 07:31:28,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:28" (1/1) ... [2021-11-07 07:31:28,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:28" (1/1) ... [2021-11-07 07:31:28,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:28" (1/1) ... [2021-11-07 07:31:28,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:28" (1/1) ... [2021-11-07 07:31:28,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:31:28,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:31:28,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:31:28,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:31:28,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:28" (1/1) ... [2021-11-07 07:31:28,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:31:28,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:28,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:31:28,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:31:28,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-07 07:31:28,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:31:28,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 07:31:28,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 07:31:28,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-07 07:31:28,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-07 07:31:28,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-07 07:31:28,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-07 07:31:28,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-07 07:31:28,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-11-07 07:31:28,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-11-07 07:31:28,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-07 07:31:28,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-07 07:31:28,687 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-11-07 07:31:28,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-11-07 07:31:28,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-11-07 07:31:28,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-11-07 07:31:28,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-11-07 07:31:28,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-11-07 07:31:28,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-11-07 07:31:28,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-11-07 07:31:28,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-11-07 07:31:28,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-11-07 07:31:28,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-11-07 07:31:28,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-07 07:31:28,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-07 07:31:28,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-11-07 07:31:28,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-11-07 07:31:28,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-11-07 07:31:28,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-11-07 07:31:28,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-11-07 07:31:28,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-11-07 07:31:28,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-11-07 07:31:28,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-11-07 07:31:28,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-11-07 07:31:28,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-11-07 07:31:28,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-11-07 07:31:28,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-11-07 07:31:28,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-11-07 07:31:28,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-11-07 07:31:28,692 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-11-07 07:31:28,693 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-11-07 07:31:28,693 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2021-11-07 07:31:28,694 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2021-11-07 07:31:28,694 INFO L138 BoogieDeclarations]: Found implementation of procedure probe2_6 [2021-11-07 07:31:28,694 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2021-11-07 07:31:28,694 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-11-07 07:31:28,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-07 07:31:28,695 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-07 07:31:28,696 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-07 07:31:28,696 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-07 07:31:28,696 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-07 07:31:28,696 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-07 07:31:28,697 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-07 07:31:28,697 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-07 07:31:28,697 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-07 07:31:28,697 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-07 07:31:28,697 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-07 07:31:28,698 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-07 07:31:28,698 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-07 07:31:28,698 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-07 07:31:28,698 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-07 07:31:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-07 07:31:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-07 07:31:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-07 07:31:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-07 07:31:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-07 07:31:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-07 07:31:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-07 07:31:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-07 07:31:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-07 07:31:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-07 07:31:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-07 07:31:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-07 07:31:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-07 07:31:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-07 07:31:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-07 07:31:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-07 07:31:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-07 07:31:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-07 07:31:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-07 07:31:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-07 07:31:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-07 07:31:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-07 07:31:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-07 07:31:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-07 07:31:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-07 07:31:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-07 07:31:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-07 07:31:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-07 07:31:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-07 07:31:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-07 07:31:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-07 07:31:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-07 07:31:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-07 07:31:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-07 07:31:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-07 07:31:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-07 07:31:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-07 07:31:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-07 07:31:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-07 07:31:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-07 07:31:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-07 07:31:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-07 07:31:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-07 07:31:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-07 07:31:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-07 07:31:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-07 07:31:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-07 07:31:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-07 07:31:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-07 07:31:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-07 07:31:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-07 07:31:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-07 07:31:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-07 07:31:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-07 07:31:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-07 07:31:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-07 07:31:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-07 07:31:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-07 07:31:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-07 07:31:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-07 07:31:28,711 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-07 07:31:28,712 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-07 07:31:28,715 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-07 07:31:28,715 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-07 07:31:28,716 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-07 07:31:28,716 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-07 07:31:28,717 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-07 07:31:28,718 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-07 07:31:28,718 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-07 07:31:28,718 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-07 07:31:28,719 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-07 07:31:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-07 07:31:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-07 07:31:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-07 07:31:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-07 07:31:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-07 07:31:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-07 07:31:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-07 07:31:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-07 07:31:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-07 07:31:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-07 07:31:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-07 07:31:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-07 07:31:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-07 07:31:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-07 07:31:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-07 07:31:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-07 07:31:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-07 07:31:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-07 07:31:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-07 07:31:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-07 07:31:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-07 07:31:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-07 07:31:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-07 07:31:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-07 07:31:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-07 07:31:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-07 07:31:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-07 07:31:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-11-07 07:31:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-11-07 07:31:28,728 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-07 07:31:28,728 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-07 07:31:28,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-07 07:31:28,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:31:28,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-07 07:31:28,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-07 07:31:28,728 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-11-07 07:31:28,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:31:28,729 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-11-07 07:31:28,729 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-11-07 07:31:28,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-11-07 07:31:28,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:31:28,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-11-07 07:31:28,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-11-07 07:31:28,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-11-07 07:31:28,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-11-07 07:31:28,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-07 07:31:28,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-11-07 07:31:28,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:31:28,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-11-07 07:31:28,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-11-07 07:31:28,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-07 07:31:28,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-07 07:31:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-11-07 07:31:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 07:31:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 07:31:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-11-07 07:31:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-11-07 07:31:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 07:31:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-11-07 07:31:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-11-07 07:31:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-11-07 07:31:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-11-07 07:31:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-11-07 07:31:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-11-07 07:31:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-11-07 07:31:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-11-07 07:31:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-11-07 07:31:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-11-07 07:31:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-11-07 07:31:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-07 07:31:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-11-07 07:31:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-11-07 07:31:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2021-11-07 07:31:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2021-11-07 07:31:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure probe2_6 [2021-11-07 07:31:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_6 [2021-11-07 07:31:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-11-07 07:31:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-07 07:31:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-07 07:31:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:31:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 07:31:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:31:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 07:31:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 07:31:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 07:31:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 07:31:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 07:31:29,331 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:31:29,766 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:31:30,290 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:31:30,291 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-07 07:31:30,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:31:30 BoogieIcfgContainer [2021-11-07 07:31:30,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:31:30,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:31:30,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:31:30,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:31:30,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:31:27" (1/3) ... [2021-11-07 07:31:30,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41bfb89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:31:30, skipping insertion in model container [2021-11-07 07:31:30,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:28" (2/3) ... [2021-11-07 07:31:30,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41bfb89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:31:30, skipping insertion in model container [2021-11-07 07:31:30,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:31:30" (3/3) ... [2021-11-07 07:31:30,314 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_1.i [2021-11-07 07:31:30,324 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:31:30,324 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 83 error locations. [2021-11-07 07:31:30,387 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:31:30,392 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 07:31:30,393 INFO L340 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2021-11-07 07:31:30,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 105 states have internal predecessors, (114), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-07 07:31:30,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 07:31:30,421 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:30,422 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:30,422 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-11-07 07:31:30,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:30,428 INFO L85 PathProgramCache]: Analyzing trace with hash -42624849, now seen corresponding path program 1 times [2021-11-07 07:31:30,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:30,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970763125] [2021-11-07 07:31:30,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:30,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:30,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:30,447 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:30,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 07:31:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:30,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:31:30,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:30,904 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 07:31:30,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:31,076 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 07:31:31,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:31,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970763125] [2021-11-07 07:31:31,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970763125] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:31,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:31,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 07:31:31,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487393596] [2021-11-07 07:31:31,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:31:31,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:31,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:31:31,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:31:31,110 INFO L87 Difference]: Start difference. First operand has 134 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 105 states have internal predecessors, (114), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:31:31,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:31,202 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2021-11-07 07:31:31,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:31:31,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2021-11-07 07:31:31,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:31,218 INFO L225 Difference]: With dead ends: 85 [2021-11-07 07:31:31,218 INFO L226 Difference]: Without dead ends: 82 [2021-11-07 07:31:31,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:31:31,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-07 07:31:31,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 65. [2021-11-07 07:31:31,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 49 states have internal predecessors, (53), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-11-07 07:31:31,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-11-07 07:31:31,274 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 20 [2021-11-07 07:31:31,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:31,275 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-11-07 07:31:31,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:31:31,276 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-11-07 07:31:31,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 07:31:31,277 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:31,277 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:31,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:31,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:31,491 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-11-07 07:31:31,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:31,492 INFO L85 PathProgramCache]: Analyzing trace with hash -239138354, now seen corresponding path program 1 times [2021-11-07 07:31:31,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:31,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124277905] [2021-11-07 07:31:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:31,493 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:31,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:31,495 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:31,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 07:31:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:31,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 07:31:31,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:31,795 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-07 07:31:31,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-07 07:31:31,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-11-07 07:31:32,188 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 07:31:32,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:32,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-11-07 07:31:32,921 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 07:31:32,922 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:32,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124277905] [2021-11-07 07:31:32,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124277905] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:32,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:32,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 07:31:32,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269525686] [2021-11-07 07:31:32,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:31:32,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:32,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:31:32,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:31:32,929 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-07 07:31:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:33,330 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2021-11-07 07:31:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:31:33,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 20 [2021-11-07 07:31:33,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:33,334 INFO L225 Difference]: With dead ends: 110 [2021-11-07 07:31:33,334 INFO L226 Difference]: Without dead ends: 110 [2021-11-07 07:31:33,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:31:33,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-07 07:31:33,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 95. [2021-11-07 07:31:33,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 73 states have internal predecessors, (90), 11 states have call successors, (11), 11 states have call predecessors, (11), 12 states have return successors, (12), 12 states have call predecessors, (12), 10 states have call successors, (12) [2021-11-07 07:31:33,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2021-11-07 07:31:33,349 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 20 [2021-11-07 07:31:33,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:33,350 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2021-11-07 07:31:33,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-07 07:31:33,351 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2021-11-07 07:31:33,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 07:31:33,352 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:33,352 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:33,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:33,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:33,566 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-11-07 07:31:33,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:33,566 INFO L85 PathProgramCache]: Analyzing trace with hash -239138355, now seen corresponding path program 1 times [2021-11-07 07:31:33,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:33,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37904711] [2021-11-07 07:31:33,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:33,567 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:33,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:33,569 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:33,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 07:31:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:33,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 07:31:33,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:33,823 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-11-07 07:31:33,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-11-07 07:31:33,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 5 [2021-11-07 07:31:33,985 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 07:31:33,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:34,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-11-07 07:31:34,234 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 07:31:34,234 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:34,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37904711] [2021-11-07 07:31:34,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37904711] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:34,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:34,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 07:31:34,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91434853] [2021-11-07 07:31:34,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:31:34,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:34,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:31:34,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:31:34,237 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-07 07:31:34,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:34,419 INFO L93 Difference]: Finished difference Result 131 states and 152 transitions. [2021-11-07 07:31:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:31:34,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 20 [2021-11-07 07:31:34,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:34,422 INFO L225 Difference]: With dead ends: 131 [2021-11-07 07:31:34,422 INFO L226 Difference]: Without dead ends: 127 [2021-11-07 07:31:34,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:31:34,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-07 07:31:34,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 104. [2021-11-07 07:31:34,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 66 states have (on average 1.5) internal successors, (99), 80 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-11-07 07:31:34,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2021-11-07 07:31:34,435 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 20 [2021-11-07 07:31:34,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:34,435 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2021-11-07 07:31:34,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-07 07:31:34,436 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2021-11-07 07:31:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 07:31:34,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:34,437 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:34,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:34,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:34,651 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-11-07 07:31:34,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:34,652 INFO L85 PathProgramCache]: Analyzing trace with hash 240943427, now seen corresponding path program 1 times [2021-11-07 07:31:34,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:34,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641244733] [2021-11-07 07:31:34,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:34,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:34,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:34,654 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:34,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 07:31:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:34,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:31:34,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:34,974 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 07:31:34,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:35,069 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 07:31:35,070 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:35,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641244733] [2021-11-07 07:31:35,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641244733] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:35,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:35,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 07:31:35,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254245323] [2021-11-07 07:31:35,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:31:35,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:35,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:31:35,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:31:35,076 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:31:35,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:35,120 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2021-11-07 07:31:35,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:31:35,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-11-07 07:31:35,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:35,124 INFO L225 Difference]: With dead ends: 103 [2021-11-07 07:31:35,124 INFO L226 Difference]: Without dead ends: 103 [2021-11-07 07:31:35,125 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:31:35,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-07 07:31:35,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-11-07 07:31:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 79 states have internal predecessors, (97), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-11-07 07:31:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2021-11-07 07:31:35,143 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 22 [2021-11-07 07:31:35,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:35,143 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2021-11-07 07:31:35,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:31:35,144 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2021-11-07 07:31:35,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 07:31:35,145 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:35,145 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:35,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:35,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:35,364 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting disconnect_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-11-07 07:31:35,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:35,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2116285580, now seen corresponding path program 1 times [2021-11-07 07:31:35,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:35,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692021002] [2021-11-07 07:31:35,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:35,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:35,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:35,367 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:35,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 07:31:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:35,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:31:35,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:35,699 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 07:31:35,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:35,827 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 07:31:35,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:35,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692021002] [2021-11-07 07:31:35,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692021002] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:35,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:35,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-07 07:31:35,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377648114] [2021-11-07 07:31:35,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:31:35,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:35,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:31:35,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:31:35,830 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-07 07:31:35,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:35,895 INFO L93 Difference]: Finished difference Result 121 states and 137 transitions. [2021-11-07 07:31:35,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 07:31:35,896 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 22 [2021-11-07 07:31:35,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:35,897 INFO L225 Difference]: With dead ends: 121 [2021-11-07 07:31:35,897 INFO L226 Difference]: Without dead ends: 113 [2021-11-07 07:31:35,898 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:31:35,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-07 07:31:35,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2021-11-07 07:31:35,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 69 states have (on average 1.391304347826087) internal successors, (96), 82 states have internal predecessors, (96), 11 states have call successors, (11), 11 states have call predecessors, (11), 15 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) [2021-11-07 07:31:35,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2021-11-07 07:31:35,908 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 22 [2021-11-07 07:31:35,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:35,909 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2021-11-07 07:31:35,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-07 07:31:35,909 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2021-11-07 07:31:35,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 07:31:35,910 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:35,911 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:35,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:36,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:36,122 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-11-07 07:31:36,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1120687975, now seen corresponding path program 1 times [2021-11-07 07:31:36,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:36,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083208414] [2021-11-07 07:31:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:36,124 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:36,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:36,126 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:36,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 07:31:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:36,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:31:36,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:36,670 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 07:31:36,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:36,816 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 07:31:36,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:36,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083208414] [2021-11-07 07:31:36,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083208414] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:36,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:36,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-11-07 07:31:36,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865823065] [2021-11-07 07:31:36,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:31:36,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:36,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:31:36,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:31:36,818 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-07 07:31:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:37,100 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2021-11-07 07:31:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 07:31:37,101 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2021-11-07 07:31:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:37,102 INFO L225 Difference]: With dead ends: 118 [2021-11-07 07:31:37,102 INFO L226 Difference]: Without dead ends: 118 [2021-11-07 07:31:37,103 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:31:37,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-07 07:31:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2021-11-07 07:31:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.3623188405797102) internal successors, (94), 81 states have internal predecessors, (94), 11 states have call successors, (11), 11 states have call predecessors, (11), 15 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) [2021-11-07 07:31:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2021-11-07 07:31:37,111 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 23 [2021-11-07 07:31:37,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:37,112 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2021-11-07 07:31:37,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-07 07:31:37,112 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2021-11-07 07:31:37,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 07:31:37,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:37,113 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:37,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:37,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:37,325 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-11-07 07:31:37,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:37,325 INFO L85 PathProgramCache]: Analyzing trace with hash -381588475, now seen corresponding path program 1 times [2021-11-07 07:31:37,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:37,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279256994] [2021-11-07 07:31:37,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:37,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:37,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:37,328 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:37,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 07:31:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:37,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:31:37,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:37,577 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 07:31:37,682 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 07:31:37,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:37,784 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 07:31:37,784 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:37,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279256994] [2021-11-07 07:31:37,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279256994] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:37,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:37,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2021-11-07 07:31:37,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559444359] [2021-11-07 07:31:37,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:31:37,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:37,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:31:37,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:31:37,787 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:31:37,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:37,968 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2021-11-07 07:31:37,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:31:37,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-11-07 07:31:37,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:37,970 INFO L225 Difference]: With dead ends: 109 [2021-11-07 07:31:37,970 INFO L226 Difference]: Without dead ends: 109 [2021-11-07 07:31:37,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:31:37,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-07 07:31:37,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2021-11-07 07:31:37,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 81 states have internal predecessors, (93), 11 states have call successors, (11), 11 states have call predecessors, (11), 15 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) [2021-11-07 07:31:37,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2021-11-07 07:31:37,978 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 24 [2021-11-07 07:31:37,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:37,979 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2021-11-07 07:31:37,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:31:37,979 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2021-11-07 07:31:37,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 07:31:37,980 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:37,981 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:37,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:38,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:38,194 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-11-07 07:31:38,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:38,194 INFO L85 PathProgramCache]: Analyzing trace with hash -887147100, now seen corresponding path program 1 times [2021-11-07 07:31:38,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:38,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112835534] [2021-11-07 07:31:38,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:38,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:38,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:38,196 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:38,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 07:31:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:38,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:31:38,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:38,510 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 07:31:38,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:38,661 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 07:31:38,662 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:38,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112835534] [2021-11-07 07:31:38,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112835534] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:38,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:38,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 07:31:38,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11918896] [2021-11-07 07:31:38,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:31:38,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:31:38,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:31:38,665 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:31:38,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:38,692 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2021-11-07 07:31:38,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:31:38,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-11-07 07:31:38,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:38,697 INFO L225 Difference]: With dead ends: 71 [2021-11-07 07:31:38,697 INFO L226 Difference]: Without dead ends: 67 [2021-11-07 07:31:38,697 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:31:38,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-07 07:31:38,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-11-07 07:31:38,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 40 states have (on average 1.325) internal successors, (53), 50 states have internal predecessors, (53), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-07 07:31:38,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-11-07 07:31:38,702 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 24 [2021-11-07 07:31:38,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:38,703 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-11-07 07:31:38,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:31:38,703 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-11-07 07:31:38,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 07:31:38,711 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:38,712 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:38,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:38,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:38,926 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting probe2_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-11-07 07:31:38,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:38,926 INFO L85 PathProgramCache]: Analyzing trace with hash 783543578, now seen corresponding path program 1 times [2021-11-07 07:31:38,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:38,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584328201] [2021-11-07 07:31:38,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:38,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:38,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:38,928 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:38,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 07:31:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:39,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 07:31:39,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:39,216 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-11-07 07:31:39,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-11-07 07:31:39,372 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-07 07:31:39,373 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 07:31:39,529 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 07:31:39,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:39,806 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 07:31:39,806 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:39,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584328201] [2021-11-07 07:31:39,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584328201] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:39,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:39,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 8 [2021-11-07 07:31:39,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633928521] [2021-11-07 07:31:39,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:31:39,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:39,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:31:39,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:31:39,809 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-07 07:31:40,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:40,195 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2021-11-07 07:31:40,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:31:40,196 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 28 [2021-11-07 07:31:40,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:40,197 INFO L225 Difference]: With dead ends: 71 [2021-11-07 07:31:40,197 INFO L226 Difference]: Without dead ends: 71 [2021-11-07 07:31:40,198 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:31:40,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-07 07:31:40,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2021-11-07 07:31:40,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 40 states have (on average 1.3) internal successors, (52), 49 states have internal predecessors, (52), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-07 07:31:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-11-07 07:31:40,201 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 28 [2021-11-07 07:31:40,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:40,202 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-11-07 07:31:40,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-07 07:31:40,202 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-11-07 07:31:40,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 07:31:40,203 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:40,203 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:40,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:40,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:40,404 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting probe2_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-11-07 07:31:40,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:40,404 INFO L85 PathProgramCache]: Analyzing trace with hash 783543579, now seen corresponding path program 1 times [2021-11-07 07:31:40,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:40,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413487188] [2021-11-07 07:31:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:40,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:40,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:40,405 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:40,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 07:31:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:40,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 07:31:40,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:40,670 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-07 07:31:40,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-07 07:31:44,913 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 07:31:44,914 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 07:31:45,192 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 07:31:45,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:47,675 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 07:31:47,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:47,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413487188] [2021-11-07 07:31:47,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413487188] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:47,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:47,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-11-07 07:31:47,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124190381] [2021-11-07 07:31:47,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 07:31:47,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:47,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 07:31:47,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210 [2021-11-07 07:31:47,679 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-07 07:31:58,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:58,662 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2021-11-07 07:31:58,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 07:31:58,663 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 28 [2021-11-07 07:31:58,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:58,664 INFO L225 Difference]: With dead ends: 64 [2021-11-07 07:31:58,664 INFO L226 Difference]: Without dead ends: 64 [2021-11-07 07:31:58,665 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=123, Invalid=381, Unknown=2, NotChecked=0, Total=506 [2021-11-07 07:31:58,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-07 07:31:58,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-07 07:31:58,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.225) internal successors, (49), 47 states have internal predecessors, (49), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-07 07:31:58,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2021-11-07 07:31:58,668 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 28 [2021-11-07 07:31:58,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:58,669 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2021-11-07 07:31:58,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-07 07:31:58,670 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2021-11-07 07:31:58,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 07:31:58,671 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:58,671 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:58,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:58,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:58,884 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-11-07 07:31:58,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:58,884 INFO L85 PathProgramCache]: Analyzing trace with hash 558976828, now seen corresponding path program 1 times [2021-11-07 07:31:58,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:58,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802267947] [2021-11-07 07:31:58,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:58,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:58,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:58,886 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:58,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 07:31:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:59,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 07:31:59,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:59,206 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-11-07 07:31:59,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-11-07 07:31:59,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 5 [2021-11-07 07:31:59,467 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 0 case distinctions, treesize of input 21 treesize of output 18 [2021-11-07 07:31:59,701 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-07 07:31:59,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2021-11-07 07:31:59,768 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 07:31:59,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:32:00,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 7 [2021-11-07 07:32:00,460 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 07:32:00,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:32:00,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802267947] [2021-11-07 07:32:00,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802267947] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:32:00,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:32:00,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-11-07 07:32:00,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113549481] [2021-11-07 07:32:00,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 07:32:00,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:32:00,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 07:32:00,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:32:00,463 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-07 07:32:49,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:49,292 INFO L93 Difference]: Finished difference Result 68 states and 69 transitions. [2021-11-07 07:32:49,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 07:32:49,292 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 29 [2021-11-07 07:32:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:49,293 INFO L225 Difference]: With dead ends: 68 [2021-11-07 07:32:49,293 INFO L226 Difference]: Without dead ends: 57 [2021-11-07 07:32:49,294 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=95, Invalid=283, Unknown=2, NotChecked=0, Total=380 [2021-11-07 07:32:49,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-07 07:32:49,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-07 07:32:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 40 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-11-07 07:32:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2021-11-07 07:32:49,297 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 29 [2021-11-07 07:32:49,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:49,297 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2021-11-07 07:32:49,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-07 07:32:49,298 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2021-11-07 07:32:49,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 07:32:49,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:49,299 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:32:49,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:49,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:32:49,503 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-11-07 07:32:49,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:49,504 INFO L85 PathProgramCache]: Analyzing trace with hash 249986399, now seen corresponding path program 1 times [2021-11-07 07:32:49,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:32:49,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108098108] [2021-11-07 07:32:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:49,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:32:49,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:32:49,505 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:32:49,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 07:32:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:32:49,846 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:32:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:32:49,942 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-07 07:32:49,942 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 07:32:49,943 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-11-07 07:32:49,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,945 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,946 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-11-07 07:32:49,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-11-07 07:32:49,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,947 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-11-07 07:32:49,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-11-07 07:32:49,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-11-07 07:32:49,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-11-07 07:32:49,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-11-07 07:32:49,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-11-07 07:32:49,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-11-07 07:32:49,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-11-07 07:32:49,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,950 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,950 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,950 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,950 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-11-07 07:32:49,951 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-11-07 07:32:49,951 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,951 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,951 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-11-07 07:32:49,951 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-11-07 07:32:49,952 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,952 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,952 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,952 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,952 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-11-07 07:32:49,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-11-07 07:32:49,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-11-07 07:32:49,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-11-07 07:32:49,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,954 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,954 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,954 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,954 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,955 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,955 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,955 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,955 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,955 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,956 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,956 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-11-07 07:32:49,956 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-11-07 07:32:49,956 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-11-07 07:32:49,957 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-11-07 07:32:49,957 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,957 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,957 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,957 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,958 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,958 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,958 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,958 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,959 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err0REQUIRES_VIOLATION [2021-11-07 07:32:49,959 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err1REQUIRES_VIOLATION [2021-11-07 07:32:49,959 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,959 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,959 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-11-07 07:32:49,961 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-11-07 07:32:49,961 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,961 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,961 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION [2021-11-07 07:32:49,961 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION [2021-11-07 07:32:49,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err0REQUIRES_VIOLATION [2021-11-07 07:32:49,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err1REQUIRES_VIOLATION [2021-11-07 07:32:49,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:32:49,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:50,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:32:50,182 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:32:50,185 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 07:32:50,197 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-11-07 07:32:50,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:32:50 BoogieIcfgContainer [2021-11-07 07:32:50,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 07:32:50,231 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 07:32:50,231 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 07:32:50,231 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 07:32:50,231 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:31:30" (3/4) ... [2021-11-07 07:32:50,237 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 07:32:50,237 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 07:32:50,239 INFO L168 Benchmark]: Toolchain (without parser) took 82690.72 ms. Allocated memory was 54.5 MB in the beginning and 134.2 MB in the end (delta: 79.7 MB). Free memory was 29.7 MB in the beginning and 62.5 MB in the end (delta: -32.8 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. [2021-11-07 07:32:50,241 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 54.5 MB. Free memory was 34.9 MB in the beginning and 34.9 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:32:50,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 884.28 ms. Allocated memory was 54.5 MB in the beginning and 79.7 MB in the end (delta: 25.2 MB). Free memory was 29.5 MB in the beginning and 45.3 MB in the end (delta: -15.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-11-07 07:32:50,242 INFO L168 Benchmark]: Boogie Preprocessor took 123.13 ms. Allocated memory is still 79.7 MB. Free memory was 45.3 MB in the beginning and 57.9 MB in the end (delta: -12.6 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-11-07 07:32:50,242 INFO L168 Benchmark]: RCFGBuilder took 1734.13 ms. Allocated memory is still 79.7 MB. Free memory was 57.9 MB in the beginning and 52.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. [2021-11-07 07:32:50,243 INFO L168 Benchmark]: TraceAbstraction took 79933.68 ms. Allocated memory was 79.7 MB in the beginning and 134.2 MB in the end (delta: 54.5 MB). Free memory was 52.2 MB in the beginning and 63.5 MB in the end (delta: -11.4 MB). Peak memory consumption was 42.5 MB. Max. memory is 16.1 GB. [2021-11-07 07:32:50,243 INFO L168 Benchmark]: Witness Printer took 6.82 ms. Allocated memory is still 134.2 MB. Free memory was 63.5 MB in the beginning and 62.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:32:50,246 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 54.5 MB. Free memory was 34.9 MB in the beginning and 34.9 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 884.28 ms. Allocated memory was 54.5 MB in the beginning and 79.7 MB in the end (delta: 25.2 MB). Free memory was 29.5 MB in the beginning and 45.3 MB in the end (delta: -15.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 123.13 ms. Allocated memory is still 79.7 MB. Free memory was 45.3 MB in the beginning and 57.9 MB in the end (delta: -12.6 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1734.13 ms. Allocated memory is still 79.7 MB. Free memory was 57.9 MB in the beginning and 52.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 79933.68 ms. Allocated memory was 79.7 MB in the beginning and 134.2 MB in the end (delta: 54.5 MB). Free memory was 52.2 MB in the beginning and 63.5 MB in the end (delta: -11.4 MB). Peak memory consumption was 42.5 MB. Max. memory is 16.1 GB. * Witness Printer took 6.82 ms. Allocated memory is still 134.2 MB. Free memory was 63.5 MB in the beginning and 62.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - UnprovableResult [Line: 791]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 791. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L783] struct A a6; VAL [\old(a6)=null, \old(a6)=null, \old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L792] CALL entry_point() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L785] CALL, EXPR probe2_6(&a6) VAL [a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L764] int ret = - -3; VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, ret=3] [L765] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, ldv_malloc(sizeof(int))={1:0}, ret=3] [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=3] [L768] CALL, EXPR f6() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() VAL [a={3:0}, a={3:0}, a6={3:0}, f6()=0, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=3] [L768] ret = f6() [L769] COND FALSE !(ret<0) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L771] CALL, EXPR g6() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L761] return __VERIFIER_nondet_int(); [L771] RET, EXPR g6() VAL [a={3:0}, a={3:0}, a6={3:0}, g6()=-2147483648, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L771] ret = g6() [L772] COND TRUE ret<0 [L773] return ret; VAL [\result=-2147483648, a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=2147483648] [L785] RET, EXPR probe2_6(&a6) VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}, probe2_6(&a6)=-2147483648] [L785] int ret = probe2_6(&a6); [L786] COND FALSE !(ret==0) VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}, ret=2147483648] [L789] a6.p = 0 VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}, ret=2147483648] [L792] RET entry_point() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 789]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 789]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 51 procedures, 374 locations, 83 error locations. Started 1 CEGAR loops. OverallTime: 79.7s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 61.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 647 SDtfs, 962 SDslu, 1596 SDs, 0 SdLazy, 985 SolverSat, 263 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 52.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 535 GetRequests, 414 SyntacticMatches, 30 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 14.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=0, InterpolantAutomatonStates: 87, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 81 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.4s InterpolantComputationTime, 295 NumberOfCodeBlocks, 295 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 498 ConstructedInterpolants, 45 QuantifiedInterpolants, 3168 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1202 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 07:32:50,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493ddd7e-707a-419f-8008-4090f1a68948/bin/uautomizer-AkOaLMaTGY/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: UNKNOWN: Overapproximated counterexample