./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg --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 7f731faf9d41ed60f5858e3dbd50ffba002d2a56a92297f4715b69207f896c11 ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg --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 7f731faf9d41ed60f5858e3dbd50ffba002d2a56a92297f4715b69207f896c11 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:35:35,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:35:35,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:35:35,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:35:35,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:35:35,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:35:35,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:35:35,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:35:35,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:35:35,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:35:35,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:35:35,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:35:35,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:35:35,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:35:35,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:35:35,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:35:35,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:35:35,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:35:35,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:35:35,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:35:35,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:35:35,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:35:35,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:35:35,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:35:35,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:35:35,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:35:35,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:35:35,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:35:35,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:35:35,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:35:35,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:35:35,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:35:35,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:35:35,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:35:35,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:35:35,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:35:35,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:35:35,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:35:35,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:35:35,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:35:35,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:35:35,803 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 08:35:35,854 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:35:35,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:35:35,856 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:35:35,856 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:35:35,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:35:35,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:35:35,858 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:35:35,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:35:35,858 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:35:35,858 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:35:35,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:35:35,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:35:35,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:35:35,860 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:35:35,860 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:35:35,861 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 08:35:35,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:35:35,861 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:35:35,861 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:35:35,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:35:35,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:35:35,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:35:35,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:35:35,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:35:35,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:35:35,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:35:35,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:35:35,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:35:35,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:35:35,865 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_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f731faf9d41ed60f5858e3dbd50ffba002d2a56a92297f4715b69207f896c11 [2021-10-28 08:35:36,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:35:36,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:35:36,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:35:36,152 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:35:36,153 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:35:36,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2021-10-28 08:35:36,252 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/data/e6cba55a1/4230c3d2c8ce462cb0f02154796ec0d3/FLAG90211e34c [2021-10-28 08:35:36,897 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:35:36,897 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2021-10-28 08:35:36,918 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/data/e6cba55a1/4230c3d2c8ce462cb0f02154796ec0d3/FLAG90211e34c [2021-10-28 08:35:37,168 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/data/e6cba55a1/4230c3d2c8ce462cb0f02154796ec0d3 [2021-10-28 08:35:37,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:35:37,172 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:35:37,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:35:37,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:35:37,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:35:37,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:35:37" (1/1) ... [2021-10-28 08:35:37,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@341972e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:37, skipping insertion in model container [2021-10-28 08:35:37,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:35:37" (1/1) ... [2021-10-28 08:35:37,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:35:37,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:35:37,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:35:37,662 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-28 08:35:37,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6dfe9031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:37, skipping insertion in model container [2021-10-28 08:35:37,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:35:37,663 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-28 08:35:37,665 INFO L168 Benchmark]: Toolchain (without parser) took 491.81 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.9 MB in the beginning and 80.1 MB in the end (delta: -27.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:37,666 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 88.1 MB. Free memory was 58.8 MB in the beginning and 58.8 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:35:37,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.79 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.7 MB in the beginning and 80.1 MB in the end (delta: -27.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:37,669 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 88.1 MB. Free memory was 58.8 MB in the beginning and 58.8 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 482.79 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.7 MB in the beginning and 80.1 MB in the end (delta: -27.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:35:39,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:35:39,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:35:39,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:35:39,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:35:39,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:35:39,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:35:40,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:35:40,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:35:40,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:35:40,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:35:40,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:35:40,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:35:40,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:35:40,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:35:40,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:35:40,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:35:40,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:35:40,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:35:40,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:35:40,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:35:40,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:35:40,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:35:40,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:35:40,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:35:40,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:35:40,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:35:40,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:35:40,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:35:40,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:35:40,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:35:40,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:35:40,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:35:40,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:35:40,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:35:40,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:35:40,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:35:40,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:35:40,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:35:40,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:35:40,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:35:40,076 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 08:35:40,121 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:35:40,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:35:40,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:35:40,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:35:40,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:35:40,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:35:40,125 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:35:40,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:35:40,125 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:35:40,126 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:35:40,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:35:40,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:35:40,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:35:40,127 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:35:40,128 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:35:40,128 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 08:35:40,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:35:40,128 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:35:40,129 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 08:35:40,129 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 08:35:40,129 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:35:40,129 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:35:40,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:35:40,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:35:40,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:35:40,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:35:40,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:35:40,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:35:40,131 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 08:35:40,131 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 08:35:40,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:35:40,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 08:35:40,132 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_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f731faf9d41ed60f5858e3dbd50ffba002d2a56a92297f4715b69207f896c11 [2021-10-28 08:35:40,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:35:40,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:35:40,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:35:40,596 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:35:40,597 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:35:40,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2021-10-28 08:35:40,686 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/data/81b08ce0a/acc6b3b6676f43bfa6f8bdce4cb6cb89/FLAGc4b3b69f1 [2021-10-28 08:35:41,288 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:35:41,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2021-10-28 08:35:41,330 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/data/81b08ce0a/acc6b3b6676f43bfa6f8bdce4cb6cb89/FLAGc4b3b69f1 [2021-10-28 08:35:41,544 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/data/81b08ce0a/acc6b3b6676f43bfa6f8bdce4cb6cb89 [2021-10-28 08:35:41,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:35:41,548 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:35:41,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:35:41,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:35:41,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:35:41,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:35:41" (1/1) ... [2021-10-28 08:35:41,555 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 28.10 08:35:41, skipping insertion in model container [2021-10-28 08:35:41,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:35:41" (1/1) ... [2021-10-28 08:35:41,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:35:41,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:35:42,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:35:42,151 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-28 08:35:42,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:35:42,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:35:42,279 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:35:42,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:35:42,390 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:35:42,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:42 WrapperNode [2021-10-28 08:35:42,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:35:42,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:35:42,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:35:42,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:35:42,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:42" (1/1) ... [2021-10-28 08:35:42,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:42" (1/1) ... [2021-10-28 08:35:42,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:42" (1/1) ... [2021-10-28 08:35:42,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:42" (1/1) ... [2021-10-28 08:35:42,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:42" (1/1) ... [2021-10-28 08:35:42,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:42" (1/1) ... [2021-10-28 08:35:42,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:42" (1/1) ... [2021-10-28 08:35:42,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:35:42,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:35:42,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:35:42,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:35:42,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:42" (1/1) ... [2021-10-28 08:35:42,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:35:42,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:42,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:42,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:35:42,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:35:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:35:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-28 08:35:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 08:35:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 08:35:42,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 08:35:42,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 08:35:42,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 08:35:42,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 08:35:42,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-28 08:35:42,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-28 08:35:42,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-28 08:35:42,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-28 08:35:42,612 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-28 08:35:42,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-28 08:35:42,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-28 08:35:42,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-28 08:35:42,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-28 08:35:42,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-28 08:35:42,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-28 08:35:42,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-28 08:35:42,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-28 08:35:42,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-28 08:35:42,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-28 08:35:42,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-28 08:35:42,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-28 08:35:42,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-28 08:35:42,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-28 08:35:42,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-28 08:35:42,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-28 08:35:42,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-28 08:35:42,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-28 08:35:42,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-28 08:35:42,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-28 08:35:42,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-28 08:35:42,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-28 08:35:42,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-28 08:35:42,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-28 08:35:42,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-28 08:35:42,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-28 08:35:42,622 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-28 08:35:42,622 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-28 08:35:42,623 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2021-10-28 08:35:42,623 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2021-10-28 08:35:42,623 INFO L138 BoogieDeclarations]: Found implementation of procedure probe3_6 [2021-10-28 08:35:42,623 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2021-10-28 08:35:42,624 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-28 08:35:42,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:35:42,625 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-28 08:35:42,625 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-28 08:35:42,625 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-28 08:35:42,625 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 08:35:42,626 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 08:35:42,626 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 08:35:42,626 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 08:35:42,626 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 08:35:42,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 08:35:42,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 08:35:42,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 08:35:42,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 08:35:42,628 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 08:35:42,628 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 08:35:42,629 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 08:35:42,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 08:35:42,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 08:35:42,631 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 08:35:42,631 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 08:35:42,631 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 08:35:42,631 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 08:35:42,632 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 08:35:42,632 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 08:35:42,632 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 08:35:42,632 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 08:35:42,632 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 08:35:42,632 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 08:35:42,633 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 08:35:42,633 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 08:35:42,633 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 08:35:42,633 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 08:35:42,634 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 08:35:42,634 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 08:35:42,634 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 08:35:42,635 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 08:35:42,635 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 08:35:42,635 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 08:35:42,635 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 08:35:42,635 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 08:35:42,635 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 08:35:42,636 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 08:35:42,636 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 08:35:42,636 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 08:35:42,636 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 08:35:42,636 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 08:35:42,636 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 08:35:42,637 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 08:35:42,637 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 08:35:42,637 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 08:35:42,637 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 08:35:42,637 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 08:35:42,637 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 08:35:42,638 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 08:35:42,638 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 08:35:42,638 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 08:35:42,639 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 08:35:42,639 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 08:35:42,639 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 08:35:42,639 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 08:35:42,639 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 08:35:42,639 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 08:35:42,640 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 08:35:42,640 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 08:35:42,640 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 08:35:42,640 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 08:35:42,640 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 08:35:42,640 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:35:42,641 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 08:35:42,641 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 08:35:42,641 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 08:35:42,641 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 08:35:42,642 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 08:35:42,642 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 08:35:42,642 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 08:35:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 08:35:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 08:35:42,646 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 08:35:42,647 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 08:35:42,647 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 08:35:42,647 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 08:35:42,648 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 08:35:42,650 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 08:35:42,650 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 08:35:42,650 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 08:35:42,652 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 08:35:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 08:35:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 08:35:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 08:35:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 08:35:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 08:35:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 08:35:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 08:35:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 08:35:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 08:35:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 08:35:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 08:35:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 08:35:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 08:35:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 08:35:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 08:35:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 08:35:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 08:35:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 08:35:42,660 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 08:35:42,660 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 08:35:42,660 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 08:35:42,660 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 08:35:42,660 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 08:35:42,660 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 08:35:42,660 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 08:35:42,661 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-28 08:35:42,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 08:35:42,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-28 08:35:42,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-28 08:35:42,661 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 08:35:42,661 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 08:35:42,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-28 08:35:42,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 08:35:42,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-28 08:35:42,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-28 08:35:42,662 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-28 08:35:42,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 08:35:42,663 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-28 08:35:42,663 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-28 08:35:42,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-28 08:35:42,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 08:35:42,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-28 08:35:42,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-28 08:35:42,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-28 08:35:42,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-28 08:35:42,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-28 08:35:42,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-28 08:35:42,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:35:42,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-28 08:35:42,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-28 08:35:42,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-28 08:35:42,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-28 08:35:42,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-28 08:35:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 08:35:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 08:35:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-28 08:35:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-28 08:35:42,667 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-28 08:35:42,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-28 08:35:42,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-28 08:35:42,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-28 08:35:42,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-28 08:35:42,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-28 08:35:42,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-28 08:35:42,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-28 08:35:42,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-28 08:35:42,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-28 08:35:42,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-28 08:35:42,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-28 08:35:42,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-28 08:35:42,669 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-28 08:35:42,669 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-28 08:35:42,669 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2021-10-28 08:35:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2021-10-28 08:35:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure probe3_6 [2021-10-28 08:35:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_6 [2021-10-28 08:35:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-28 08:35:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:35:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:35:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:35:42,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 08:35:42,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:35:42,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 08:35:42,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-28 08:35:42,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-28 08:35:42,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-28 08:35:42,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-28 08:35:43,356 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:35:43,799 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:35:44,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:35:44,268 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 08:35:44,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:35:44 BoogieIcfgContainer [2021-10-28 08:35:44,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:35:44,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:35:44,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:35:44,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:35:44,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:35:41" (1/3) ... [2021-10-28 08:35:44,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ede8365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:35:44, skipping insertion in model container [2021-10-28 08:35:44,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:42" (2/3) ... [2021-10-28 08:35:44,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ede8365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:35:44, skipping insertion in model container [2021-10-28 08:35:44,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:35:44" (3/3) ... [2021-10-28 08:35:44,279 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_2.i [2021-10-28 08:35:44,285 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:35:44,285 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 86 error locations. [2021-10-28 08:35:44,342 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:35:44,348 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 [2021-10-28 08:35:44,348 INFO L340 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2021-10-28 08:35:44,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 76 states have (on average 1.5657894736842106) internal successors, (119), 110 states have internal predecessors, (119), 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) [2021-10-28 08:35:44,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 08:35:44,375 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:35:44,376 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] [2021-10-28 08:35:44,376 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-28 08:35:44,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:44,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2083337596, now seen corresponding path program 1 times [2021-10-28 08:35:44,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:35:44,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277554962] [2021-10-28 08:35:44,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:44,396 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:35:44,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:35:44,399 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:35:44,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 08:35:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:44,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:35:44,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:44,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:35:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:44,991 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:35:44,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277554962] [2021-10-28 08:35:44,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277554962] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:35:45,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:35:45,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 08:35:45,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546757845] [2021-10-28 08:35:45,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:35:45,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:35:45,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:35:45,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:35:45,037 INFO L87 Difference]: Start difference. First operand has 139 states, 76 states have (on average 1.5657894736842106) internal successors, (119), 110 states have internal predecessors, (119), 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) [2021-10-28 08:35:45,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:45,163 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2021-10-28 08:35:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:35:45,165 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 [2021-10-28 08:35:45,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:35:45,183 INFO L225 Difference]: With dead ends: 94 [2021-10-28 08:35:45,184 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 08:35:45,185 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 [2021-10-28 08:35:45,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 08:35:45,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 70. [2021-10-28 08:35:45,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 54 states have internal predecessors, (58), 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) [2021-10-28 08:35:45,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2021-10-28 08:35:45,255 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 20 [2021-10-28 08:35:45,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:35:45,255 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2021-10-28 08:35:45,256 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) [2021-10-28 08:35:45,256 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2021-10-28 08:35:45,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 08:35:45,258 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:35:45,258 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] [2021-10-28 08:35:45,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:45,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:35:45,473 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-28 08:35:45,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:45,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2015116195, now seen corresponding path program 1 times [2021-10-28 08:35:45,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:35:45,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101074542] [2021-10-28 08:35:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:45,476 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:35:45,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:35:45,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:35:45,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 08:35:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:45,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 08:35:45,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:45,742 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-28 08:35:45,743 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 [2021-10-28 08:35:45,924 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 [2021-10-28 08:35:45,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:45,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:35:46,190 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 [2021-10-28 08:35:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:46,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:35:46,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101074542] [2021-10-28 08:35:46,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101074542] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:35:46,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:35:46,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 08:35:46,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162000571] [2021-10-28 08:35:46,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:35:46,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:35:46,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:35:46,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:35:46,303 INFO L87 Difference]: Start difference. First operand 70 states and 74 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) [2021-10-28 08:35:46,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:46,500 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2021-10-28 08:35:46,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:35:46,501 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 [2021-10-28 08:35:46,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:35:46,503 INFO L225 Difference]: With dead ends: 111 [2021-10-28 08:35:46,503 INFO L226 Difference]: Without dead ends: 108 [2021-10-28 08:35:46,504 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:35:46,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-28 08:35:46,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 75. [2021-10-28 08:35:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 42 states have (on average 1.5) internal successors, (63), 58 states have internal predecessors, (63), 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) [2021-10-28 08:35:46,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2021-10-28 08:35:46,518 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 20 [2021-10-28 08:35:46,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:35:46,518 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2021-10-28 08:35:46,519 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) [2021-10-28 08:35:46,519 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2021-10-28 08:35:46,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 08:35:46,520 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:35:46,521 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] [2021-10-28 08:35:46,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:46,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:35:46,733 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-28 08:35:46,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:46,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2015116196, now seen corresponding path program 1 times [2021-10-28 08:35:46,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:35:46,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20617807] [2021-10-28 08:35:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:46,734 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:35:46,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:35:46,735 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:35:46,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 08:35:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:46,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:35:46,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:46,996 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-28 08:35:46,997 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 [2021-10-28 08:35:47,075 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 [2021-10-28 08:35:47,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:47,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:35:47,581 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 [2021-10-28 08:35:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:47,834 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:35:47,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20617807] [2021-10-28 08:35:47,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20617807] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:35:47,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:35:47,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 08:35:47,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558392533] [2021-10-28 08:35:47,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:35:47,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:35:47,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:35:47,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:35:47,837 INFO L87 Difference]: Start difference. First operand 75 states and 80 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) [2021-10-28 08:35:48,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:48,126 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2021-10-28 08:35:48,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:35:48,127 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 [2021-10-28 08:35:48,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:35:48,129 INFO L225 Difference]: With dead ends: 125 [2021-10-28 08:35:48,129 INFO L226 Difference]: Without dead ends: 124 [2021-10-28 08:35:48,130 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 [2021-10-28 08:35:48,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-28 08:35:48,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 106. [2021-10-28 08:35:48,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 83 states have internal predecessors, (103), 11 states have call successors, (11), 11 states have call predecessors, (11), 13 states have return successors, (13), 13 states have call predecessors, (13), 10 states have call successors, (13) [2021-10-28 08:35:48,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2021-10-28 08:35:48,142 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 20 [2021-10-28 08:35:48,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:35:48,143 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2021-10-28 08:35:48,143 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) [2021-10-28 08:35:48,143 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2021-10-28 08:35:48,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 08:35:48,146 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:35:48,146 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] [2021-10-28 08:35:48,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:48,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:35:48,350 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-28 08:35:48,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:48,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1702507591, now seen corresponding path program 1 times [2021-10-28 08:35:48,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:35:48,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112765688] [2021-10-28 08:35:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:48,352 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:35:48,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:35:48,352 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:35:48,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 08:35:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:48,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:35:48,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:48,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:35:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:48,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:35:48,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112765688] [2021-10-28 08:35:48,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112765688] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:35:48,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:35:48,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 08:35:48,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807795954] [2021-10-28 08:35:48,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:35:48,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:35:48,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:35:48,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:35:48,736 INFO L87 Difference]: Start difference. First operand 106 states and 127 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) [2021-10-28 08:35:48,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:48,774 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2021-10-28 08:35:48,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:35:48,775 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 [2021-10-28 08:35:48,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:35:48,779 INFO L225 Difference]: With dead ends: 104 [2021-10-28 08:35:48,779 INFO L226 Difference]: Without dead ends: 104 [2021-10-28 08:35:48,779 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 [2021-10-28 08:35:48,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-28 08:35:48,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-10-28 08:35:48,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 66 states have (on average 1.5) internal successors, (99), 81 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 13 states have return successors, (13), 13 states have call predecessors, (13), 10 states have call successors, (13) [2021-10-28 08:35:48,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2021-10-28 08:35:48,800 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 22 [2021-10-28 08:35:48,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:35:48,801 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2021-10-28 08:35:48,801 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) [2021-10-28 08:35:48,801 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2021-10-28 08:35:48,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 08:35:48,802 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:35:48,802 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] [2021-10-28 08:35:48,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:49,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:35:49,003 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 82 more)] === [2021-10-28 08:35:49,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:49,003 INFO L85 PathProgramCache]: Analyzing trace with hash -503576158, now seen corresponding path program 1 times [2021-10-28 08:35:49,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:35:49,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479522912] [2021-10-28 08:35:49,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:49,004 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:35:49,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:35:49,005 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:35:49,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 08:35:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:49,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 08:35:49,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:49,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:49,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:35:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:49,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:35:49,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479522912] [2021-10-28 08:35:49,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479522912] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:35:49,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:35:49,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-28 08:35:49,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943805061] [2021-10-28 08:35:49,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 08:35:49,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:35:49,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 08:35:49,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:35:49,459 INFO L87 Difference]: Start difference. First operand 104 states and 123 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) [2021-10-28 08:35:49,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:49,536 INFO L93 Difference]: Finished difference Result 118 states and 137 transitions. [2021-10-28 08:35:49,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:35:49,538 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 [2021-10-28 08:35:49,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:35:49,539 INFO L225 Difference]: With dead ends: 118 [2021-10-28 08:35:49,539 INFO L226 Difference]: Without dead ends: 114 [2021-10-28 08:35:49,540 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 [2021-10-28 08:35:49,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-28 08:35:49,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2021-10-28 08:35:49,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 69 states have (on average 1.463768115942029) internal successors, (101), 84 states have internal predecessors, (101), 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) [2021-10-28 08:35:49,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2021-10-28 08:35:49,548 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 22 [2021-10-28 08:35:49,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:35:49,548 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2021-10-28 08:35:49,548 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) [2021-10-28 08:35:49,548 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2021-10-28 08:35:49,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 08:35:49,549 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:35:49,549 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] [2021-10-28 08:35:49,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:49,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:35:49,764 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-28 08:35:49,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:49,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1238127481, now seen corresponding path program 1 times [2021-10-28 08:35:49,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:35:49,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190239826] [2021-10-28 08:35:49,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:49,765 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:35:49,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:35:49,766 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:35:49,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 08:35:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:50,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 08:35:50,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:50,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:35:50,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:50,438 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:35:50,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190239826] [2021-10-28 08:35:50,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190239826] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:35:50,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:35:50,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-10-28 08:35:50,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123950148] [2021-10-28 08:35:50,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 08:35:50,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:35:50,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 08:35:50,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:35:50,440 INFO L87 Difference]: Start difference. First operand 108 states and 126 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) [2021-10-28 08:35:50,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:50,759 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2021-10-28 08:35:50,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:35:50,760 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 [2021-10-28 08:35:50,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:35:50,761 INFO L225 Difference]: With dead ends: 118 [2021-10-28 08:35:50,761 INFO L226 Difference]: Without dead ends: 118 [2021-10-28 08:35:50,762 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 [2021-10-28 08:35:50,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-28 08:35:50,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2021-10-28 08:35:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.4057971014492754) internal successors, (97), 82 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) [2021-10-28 08:35:50,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2021-10-28 08:35:50,769 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 23 [2021-10-28 08:35:50,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:35:50,769 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2021-10-28 08:35:50,769 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) [2021-10-28 08:35:50,769 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2021-10-28 08:35:50,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 08:35:50,770 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:35:50,770 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] [2021-10-28 08:35:50,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:50,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:35:50,982 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-28 08:35:50,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:50,983 INFO L85 PathProgramCache]: Analyzing trace with hash 272754043, now seen corresponding path program 1 times [2021-10-28 08:35:50,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:35:50,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56480216] [2021-10-28 08:35:50,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:50,983 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:35:50,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:35:50,984 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:35:50,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 08:35:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:51,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:35:51,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:51,244 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 [2021-10-28 08:35:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:51,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:35:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:51,473 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:35:51,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56480216] [2021-10-28 08:35:51,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56480216] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:35:51,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:35:51,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2021-10-28 08:35:51,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451038866] [2021-10-28 08:35:51,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:35:51,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:35:51,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:35:51,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:35:51,475 INFO L87 Difference]: Start difference. First operand 106 states and 122 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) [2021-10-28 08:35:51,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:51,644 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2021-10-28 08:35:51,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:35:51,645 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 [2021-10-28 08:35:51,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:35:51,646 INFO L225 Difference]: With dead ends: 108 [2021-10-28 08:35:51,646 INFO L226 Difference]: Without dead ends: 108 [2021-10-28 08:35:51,646 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:35:51,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-28 08:35:51,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2021-10-28 08:35:51,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.3768115942028984) internal successors, (95), 82 states have internal predecessors, (95), 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) [2021-10-28 08:35:51,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2021-10-28 08:35:51,653 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 24 [2021-10-28 08:35:51,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:35:51,654 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2021-10-28 08:35:51,654 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) [2021-10-28 08:35:51,654 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2021-10-28 08:35:51,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 08:35:51,655 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:35:51,656 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] [2021-10-28 08:35:51,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:51,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:35:51,856 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-28 08:35:51,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:51,857 INFO L85 PathProgramCache]: Analyzing trace with hash -232804582, now seen corresponding path program 1 times [2021-10-28 08:35:51,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:35:51,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314774386] [2021-10-28 08:35:51,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:51,857 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:35:51,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:35:51,858 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:35:51,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 08:35:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:52,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:35:52,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:52,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:35:52,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:52,380 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:35:52,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314774386] [2021-10-28 08:35:52,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314774386] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:35:52,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:35:52,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 08:35:52,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441551720] [2021-10-28 08:35:52,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:35:52,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:35:52,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:35:52,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:35:52,382 INFO L87 Difference]: Start difference. First operand 106 states and 120 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) [2021-10-28 08:35:52,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:52,406 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2021-10-28 08:35:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:35:52,407 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 [2021-10-28 08:35:52,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:35:52,408 INFO L225 Difference]: With dead ends: 68 [2021-10-28 08:35:52,408 INFO L226 Difference]: Without dead ends: 64 [2021-10-28 08:35:52,408 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 [2021-10-28 08:35:52,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-28 08:35:52,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-28 08:35:52,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 48 states have internal predecessors, (50), 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) [2021-10-28 08:35:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2021-10-28 08:35:52,415 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 24 [2021-10-28 08:35:52,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:35:52,415 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2021-10-28 08:35:52,416 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) [2021-10-28 08:35:52,416 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2021-10-28 08:35:52,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 08:35:52,419 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:35:52,420 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] [2021-10-28 08:35:52,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:52,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:35:52,629 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting probe3_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-28 08:35:52,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:52,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1514319562, now seen corresponding path program 1 times [2021-10-28 08:35:52,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:35:52,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978321361] [2021-10-28 08:35:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:52,630 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:35:52,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:35:52,631 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:35:52,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 08:35:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:52,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 08:35:52,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:52,902 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-28 08:35:52,903 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 [2021-10-28 08:35:53,076 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 08:35:53,077 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 [2021-10-28 08:35:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:53,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:35:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:53,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:35:53,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978321361] [2021-10-28 08:35:53,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978321361] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:35:53,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:35:53,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 8 [2021-10-28 08:35:53,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049844511] [2021-10-28 08:35:53,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 08:35:53,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:35:53,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 08:35:53,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:35:53,529 INFO L87 Difference]: Start difference. First operand 64 states and 66 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) [2021-10-28 08:35:53,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:53,939 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-10-28 08:35:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:35:53,940 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 [2021-10-28 08:35:53,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:35:53,941 INFO L225 Difference]: With dead ends: 63 [2021-10-28 08:35:53,941 INFO L226 Difference]: Without dead ends: 63 [2021-10-28 08:35:53,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-10-28 08:35:53,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-28 08:35:53,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-10-28 08:35:53,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 47 states have internal predecessors, (49), 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) [2021-10-28 08:35:53,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2021-10-28 08:35:53,944 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 28 [2021-10-28 08:35:53,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:35:53,945 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2021-10-28 08:35:53,945 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) [2021-10-28 08:35:53,945 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2021-10-28 08:35:53,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 08:35:53,946 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:35:53,946 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] [2021-10-28 08:35:53,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-10-28 08:35:54,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:35:54,158 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting probe3_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-28 08:35:54,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:54,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1514319563, now seen corresponding path program 1 times [2021-10-28 08:35:54,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:35:54,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029317740] [2021-10-28 08:35:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:54,159 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:35:54,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:35:54,161 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:35:54,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 08:35:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:54,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 08:35:54,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:54,440 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-28 08:35:54,440 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 [2021-10-28 08:35:58,675 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 08:35:58,676 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 [2021-10-28 08:35:58,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:58,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:36:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:01,234 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:36:01,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029317740] [2021-10-28 08:36:01,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029317740] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:01,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:01,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-10-28 08:36:01,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351301401] [2021-10-28 08:36:01,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 08:36:01,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:36:01,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 08:36:01,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210 [2021-10-28 08:36:01,236 INFO L87 Difference]: Start difference. First operand 63 states and 65 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) [2021-10-28 08:36:10,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:10,092 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2021-10-28 08:36:10,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 08:36:10,093 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 [2021-10-28 08:36:10,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:10,094 INFO L225 Difference]: With dead ends: 61 [2021-10-28 08:36:10,094 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 08:36:10,095 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=123, Invalid=381, Unknown=2, NotChecked=0, Total=506 [2021-10-28 08:36:10,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 08:36:10,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-28 08:36:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 38 states have (on average 1.236842105263158) internal successors, (47), 45 states have internal predecessors, (47), 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) [2021-10-28 08:36:10,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-10-28 08:36:10,097 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 28 [2021-10-28 08:36:10,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:10,098 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-10-28 08:36:10,098 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) [2021-10-28 08:36:10,098 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-10-28 08:36:10,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 08:36:10,099 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:10,100 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] [2021-10-28 08:36:10,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 08:36:10,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:36:10,306 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 82 more)] === [2021-10-28 08:36:10,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:10,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1727877462, now seen corresponding path program 1 times [2021-10-28 08:36:10,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:36:10,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188714832] [2021-10-28 08:36:10,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:10,308 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:36:10,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:36:10,309 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:36:10,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 08:36:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:10,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 08:36:10,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:36:10,644 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-28 08:36:10,644 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 [2021-10-28 08:36:10,732 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 [2021-10-28 08:36:10,870 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 20 treesize of output 17 [2021-10-28 08:36:11,069 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-28 08:36:11,069 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 28 treesize of output 31 [2021-10-28 08:36:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:11,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:36:11,601 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 [2021-10-28 08:36:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:11,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:36:11,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188714832] [2021-10-28 08:36:11,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188714832] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:11,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:11,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-10-28 08:36:11,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113549481] [2021-10-28 08:36:11,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 08:36:11,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:36:11,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 08:36:11,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:36:11,770 INFO L87 Difference]: Start difference. First operand 61 states and 63 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) [2021-10-28 08:36:36,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:36,466 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2021-10-28 08:36:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:36:36,466 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 [2021-10-28 08:36:36,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:36,467 INFO L225 Difference]: With dead ends: 65 [2021-10-28 08:36:36,467 INFO L226 Difference]: Without dead ends: 54 [2021-10-28 08:36:36,467 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=74, Invalid=231, Unknown=1, NotChecked=0, Total=306 [2021-10-28 08:36:36,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-28 08:36:36,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-28 08:36:36,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.1875) internal successors, (38), 38 states have internal predecessors, (38), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 08:36:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 53 transitions. [2021-10-28 08:36:36,470 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 53 transitions. Word has length 29 [2021-10-28 08:36:36,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:36,470 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 53 transitions. [2021-10-28 08:36:36,470 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) [2021-10-28 08:36:36,471 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 53 transitions. [2021-10-28 08:36:36,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 08:36:36,472 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:36,472 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, 1, 1, 1] [2021-10-28 08:36:36,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-28 08:36:36,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:36:36,678 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting disconnect_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-28 08:36:36,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:36,678 INFO L85 PathProgramCache]: Analyzing trace with hash 764373490, now seen corresponding path program 1 times [2021-10-28 08:36:36,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:36:36,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822807341] [2021-10-28 08:36:36,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:36,679 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:36:36,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:36:36,680 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:36:36,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-28 08:36:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:36,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 08:36:36,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:36:37,033 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-28 08:36:37,034 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 [2021-10-28 08:36:37,124 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 [2021-10-28 08:36:37,328 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 20 treesize of output 17 [2021-10-28 08:36:37,464 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 20 treesize of output 17 [2021-10-28 08:36:41,828 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-28 08:36:41,829 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 46 treesize of output 47 [2021-10-28 08:36:41,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:41,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:36:42,842 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 [2021-10-28 08:36:43,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:43,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:36:43,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822807341] [2021-10-28 08:36:43,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822807341] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:43,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:43,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 10] imperfect sequences [] total 21 [2021-10-28 08:36:43,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490436304] [2021-10-28 08:36:43,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-28 08:36:43,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:36:43,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-28 08:36:43,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=377, Unknown=2, NotChecked=0, Total=462 [2021-10-28 08:36:43,232 INFO L87 Difference]: Start difference. First operand 54 states and 53 transitions. Second operand has 22 states, 20 states have (on average 2.4) internal successors, (48), 18 states have internal predecessors, (48), 7 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2021-10-28 08:37:42,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:37:42,403 INFO L93 Difference]: Finished difference Result 53 states and 52 transitions. [2021-10-28 08:37:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 08:37:42,404 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.4) internal successors, (48), 18 states have internal predecessors, (48), 7 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 38 [2021-10-28 08:37:42,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:37:42,405 INFO L225 Difference]: With dead ends: 53 [2021-10-28 08:37:42,405 INFO L226 Difference]: Without dead ends: 53 [2021-10-28 08:37:42,406 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=175, Invalid=749, Unknown=6, NotChecked=0, Total=930 [2021-10-28 08:37:42,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-28 08:37:42,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-28 08:37:42,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 32 states have (on average 1.15625) internal successors, (37), 37 states have internal predecessors, (37), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 08:37:42,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 52 transitions. [2021-10-28 08:37:42,409 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 52 transitions. Word has length 38 [2021-10-28 08:37:42,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:37:42,410 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 52 transitions. [2021-10-28 08:37:42,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.4) internal successors, (48), 18 states have internal predecessors, (48), 7 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2021-10-28 08:37:42,410 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 52 transitions. [2021-10-28 08:37:42,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 08:37:42,411 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:42,411 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, 1, 1, 1] [2021-10-28 08:37:42,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-28 08:37:42,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:37:42,623 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting disconnect_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-28 08:37:42,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:42,624 INFO L85 PathProgramCache]: Analyzing trace with hash 764373491, now seen corresponding path program 1 times [2021-10-28 08:37:42,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:37:42,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405335604] [2021-10-28 08:37:42,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:42,624 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:37:42,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:37:42,625 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:37:42,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-28 08:37:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:42,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:37:42,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:37:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:37:43,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:37:43,682 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 [2021-10-28 08:37:43,942 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 08:37:43,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-10-28 08:37:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:37:44,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:37:44,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405335604] [2021-10-28 08:37:44,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405335604] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:37:44,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:37:44,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-28 08:37:44,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374294086] [2021-10-28 08:37:44,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 08:37:44,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:37:44,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 08:37:44,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:37:44,435 INFO L87 Difference]: Start difference. First operand 53 states and 52 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-28 08:37:44,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:37:44,922 INFO L93 Difference]: Finished difference Result 52 states and 51 transitions. [2021-10-28 08:37:44,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:37:44,923 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 38 [2021-10-28 08:37:44,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:37:44,924 INFO L225 Difference]: With dead ends: 52 [2021-10-28 08:37:44,924 INFO L226 Difference]: Without dead ends: 52 [2021-10-28 08:37:44,924 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-28 08:37:44,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-28 08:37:44,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-28 08:37:44,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 32 states have (on average 1.125) internal successors, (36), 36 states have internal predecessors, (36), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 08:37:44,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 51 transitions. [2021-10-28 08:37:44,927 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 51 transitions. Word has length 38 [2021-10-28 08:37:44,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:37:44,927 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 51 transitions. [2021-10-28 08:37:44,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-28 08:37:44,927 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 51 transitions. [2021-10-28 08:37:44,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-28 08:37:44,928 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:44,928 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, 1, 1, 1, 1] [2021-10-28 08:37:44,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-28 08:37:45,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:37:45,130 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-28 08:37:45,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:45,131 INFO L85 PathProgramCache]: Analyzing trace with hash -2074225181, now seen corresponding path program 1 times [2021-10-28 08:37:45,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:37:45,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186702220] [2021-10-28 08:37:45,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:45,132 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:37:45,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:37:45,134 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:37:45,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-28 08:37:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:45,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 08:37:45,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:37:45,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 08:37:45,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-28 08:37:45,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:37:45,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:37:46,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-28 08:37:46,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:37:46,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:37:46,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186702220] [2021-10-28 08:37:46,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186702220] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:37:46,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:37:46,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-10-28 08:37:46,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413461894] [2021-10-28 08:37:46,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 08:37:46,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:37:46,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 08:37:46,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-28 08:37:46,199 INFO L87 Difference]: Start difference. First operand 52 states and 51 transitions. Second operand has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 08:37:46,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:37:46,578 INFO L93 Difference]: Finished difference Result 51 states and 50 transitions. [2021-10-28 08:37:46,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:37:46,578 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 39 [2021-10-28 08:37:46,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:37:46,579 INFO L225 Difference]: With dead ends: 51 [2021-10-28 08:37:46,579 INFO L226 Difference]: Without dead ends: 51 [2021-10-28 08:37:46,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-10-28 08:37:46,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-28 08:37:46,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-28 08:37:46,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.09375) internal successors, (35), 35 states have internal predecessors, (35), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 08:37:46,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 50 transitions. [2021-10-28 08:37:46,582 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 50 transitions. Word has length 39 [2021-10-28 08:37:46,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:37:46,583 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 50 transitions. [2021-10-28 08:37:46,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 08:37:46,583 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 50 transitions. [2021-10-28 08:37:46,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-28 08:37:46,584 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:46,584 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, 1, 1, 1, 1, 1] [2021-10-28 08:37:46,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-28 08:37:46,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:37:46,797 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-28 08:37:46,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:46,797 INFO L85 PathProgramCache]: Analyzing trace with hash 123529298, now seen corresponding path program 1 times [2021-10-28 08:37:46,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:37:46,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238958579] [2021-10-28 08:37:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:46,798 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:37:46,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:37:46,799 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:37:46,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-28 08:37:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:47,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 08:37:47,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:37:47,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 08:37:48,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-28 08:37:48,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:37:48,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:37:48,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-28 08:37:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:37:49,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:37:49,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238958579] [2021-10-28 08:37:49,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238958579] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:37:49,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:37:49,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 11] imperfect sequences [] total 23 [2021-10-28 08:37:49,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448087811] [2021-10-28 08:37:49,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-28 08:37:49,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:37:49,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-28 08:37:49,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2021-10-28 08:37:49,204 INFO L87 Difference]: Start difference. First operand 51 states and 50 transitions. Second operand has 24 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 8 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-10-28 08:37:50,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:37:50,505 INFO L93 Difference]: Finished difference Result 50 states and 49 transitions. [2021-10-28 08:37:50,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 08:37:50,506 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 8 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) Word has length 40 [2021-10-28 08:37:50,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:37:50,507 INFO L225 Difference]: With dead ends: 50 [2021-10-28 08:37:50,507 INFO L226 Difference]: Without dead ends: 50 [2021-10-28 08:37:50,508 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=223, Invalid=899, Unknown=0, NotChecked=0, Total=1122 [2021-10-28 08:37:50,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-28 08:37:50,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-28 08:37:50,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.0625) internal successors, (34), 34 states have internal predecessors, (34), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 08:37:50,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 49 transitions. [2021-10-28 08:37:50,514 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 49 transitions. Word has length 40 [2021-10-28 08:37:50,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:37:50,514 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 49 transitions. [2021-10-28 08:37:50,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 8 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-10-28 08:37:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 49 transitions. [2021-10-28 08:37:50,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 08:37:50,516 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:50,516 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, 1, 1, 1, 1, 1, 1] [2021-10-28 08:37:50,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-28 08:37:50,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:37:50,729 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-28 08:37:50,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:50,729 INFO L85 PathProgramCache]: Analyzing trace with hash -465558587, now seen corresponding path program 1 times [2021-10-28 08:37:50,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:37:50,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506318377] [2021-10-28 08:37:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:50,730 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:37:50,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:37:50,732 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:37:50,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-28 08:37:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:37:51,228 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:37:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:37:51,320 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 08:37:51,320 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:37:51,321 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-28 08:37:51,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-28 08:37:51,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-28 08:37:51,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-28 08:37:51,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-28 08:37:51,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-28 08:37:51,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-28 08:37:51,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-28 08:37:51,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-28 08:37:51,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-28 08:37:51,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-28 08:37:51,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-28 08:37:51,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-28 08:37:51,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-28 08:37:51,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-28 08:37:51,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-28 08:37:51,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-28 08:37:51,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-28 08:37:51,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err0REQUIRES_VIOLATION [2021-10-28 08:37:51,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err1REQUIRES_VIOLATION [2021-10-28 08:37:51,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 08:37:51,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-28 08:37:51,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-28 08:37:51,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-28 08:37:51,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-28 08:37:51,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-28 08:37:51,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-28 08:37:51,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION [2021-10-28 08:37:51,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION [2021-10-28 08:37:51,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err0REQUIRES_VIOLATION [2021-10-28 08:37:51,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err1REQUIRES_VIOLATION [2021-10-28 08:37:51,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:37:51,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-28 08:37:51,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:37:51,554 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:37:51,559 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:37:51,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:37:51 BoogieIcfgContainer [2021-10-28 08:37:51,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:37:51,594 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:37:51,594 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:37:51,594 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:37:51,595 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:35:44" (3/4) ... [2021-10-28 08:37:51,596 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 08:37:51,647 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:37:51,647 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:37:51,648 INFO L168 Benchmark]: Toolchain (without parser) took 130099.82 ms. Allocated memory was 77.6 MB in the beginning and 117.4 MB in the end (delta: 39.8 MB). Free memory was 59.7 MB in the beginning and 34.7 MB in the end (delta: 25.0 MB). Peak memory consumption was 64.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:37:51,648 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:37:51,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 841.71 ms. Allocated memory is still 77.6 MB. Free memory was 59.5 MB in the beginning and 42.1 MB in the end (delta: 17.4 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:37:51,649 INFO L168 Benchmark]: Boogie Preprocessor took 118.48 ms. Allocated memory is still 77.6 MB. Free memory was 42.1 MB in the beginning and 37.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:37:51,650 INFO L168 Benchmark]: RCFGBuilder took 1760.32 ms. Allocated memory was 77.6 MB in the beginning and 96.5 MB in the end (delta: 18.9 MB). Free memory was 37.3 MB in the beginning and 54.4 MB in the end (delta: -17.1 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:37:51,650 INFO L168 Benchmark]: TraceAbstraction took 127320.21 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 54.0 MB in the beginning and 37.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 36.8 MB. Max. memory is 16.1 GB. [2021-10-28 08:37:51,651 INFO L168 Benchmark]: Witness Printer took 53.66 ms. Allocated memory is still 117.4 MB. Free memory was 37.9 MB in the beginning and 34.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:37:51,653 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 841.71 ms. Allocated memory is still 77.6 MB. Free memory was 59.5 MB in the beginning and 42.1 MB in the end (delta: 17.4 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 118.48 ms. Allocated memory is still 77.6 MB. Free memory was 42.1 MB in the beginning and 37.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1760.32 ms. Allocated memory was 77.6 MB in the beginning and 96.5 MB in the end (delta: 18.9 MB). Free memory was 37.3 MB in the beginning and 54.4 MB in the end (delta: -17.1 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 127320.21 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 54.0 MB in the beginning and 37.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 36.8 MB. Max. memory is 16.1 GB. * Witness Printer took 53.66 ms. Allocated memory is still 117.4 MB. Free memory was 37.9 MB in the beginning and 34.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - 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 - CounterExampleResult [Line: 782]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L784] 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}] [L793] CALL entry_point() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L786] CALL, EXPR probe3_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()=0, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L771] ret = g6() [L772] 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] [L774] a->p = p VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L775] free(p) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L775] free(p) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L775] free(p) [L776] return 0; VAL [\result=0, a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L786] RET, EXPR probe3_6(&a6) VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}, probe3_6(&a6)=0] [L786] int ret = probe3_6(&a6); [L787] COND TRUE ret==0 VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}, ret=0] [L788] CALL disconnect_6(&a6) VAL [a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L782] EXPR a->p VAL [a={3:0}, a={3:0}, a->p={1:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L782] free(a->p) VAL [a={3:0}, a={3:0}, a->p={1:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L782] free(a->p) VAL [a={3:0}, a={3:0}, a->p={1:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L782] free(a->p) VAL [a={3:0}, a={3:0}, a->p={1:0}, 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: 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: 775]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that free always succeeds Unable to prove that free 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: 792]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed 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: 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: 790]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 790]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: 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, 379 locations, 86 error locations. Started 1 CEGAR loops. OverallTime: 127.2s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 96.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 790 SDtfs, 1229 SDslu, 2395 SDs, 0 SdLazy, 1902 SolverSat, 329 SolverUnsat, 38 SolverUnknown, 0 SolverNotchecked, 80.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 873 GetRequests, 639 SyntacticMatches, 49 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 27.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=139occurred in iteration=0, InterpolantAutomatonStates: 133, 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, 15 MinimizatonAttempts, 92 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 22.3s InterpolantComputationTime, 456 NumberOfCodeBlocks, 456 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 800 ConstructedInterpolants, 71 QuantifiedInterpolants, 6419 SizeOfPredicates, 72 NumberOfNonLiveVariables, 1767 ConjunctsInSsa, 161 ConjunctsInUnsatCore, 30 InterpolantComputations, 30 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 08:37:51,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9648bc1-3321-4ebc-a563-6f619a048142/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...