./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX --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 bb0a504b43b0de742fcc89ebbe9d313056bb1824edece6c56238a649b6f48626 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:45:39,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:45:39,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:45:39,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:45:39,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:45:39,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:45:39,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:45:39,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:45:39,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:45:39,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:45:39,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:45:39,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:45:39,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:45:39,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:45:39,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:45:39,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:45:39,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:45:39,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:45:39,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:45:39,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:45:39,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:45:39,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:45:39,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:45:39,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:45:39,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:45:39,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:45:39,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:45:39,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:45:39,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:45:39,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:45:39,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:45:39,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:45:39,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:45:39,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:45:39,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:45:39,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:45:39,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:45:39,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:45:39,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:45:39,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:45:39,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:45:39,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 10:45:39,162 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:45:39,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:45:39,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:45:39,167 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:45:39,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:45:39,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:45:39,169 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:45:39,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:45:39,169 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:45:39,170 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 10:45:39,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:45:39,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:45:39,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:45:39,171 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 10:45:39,171 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 10:45:39,171 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 10:45:39,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:45:39,171 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 10:45:39,172 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:45:39,172 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:45:39,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:45:39,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:45:39,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:45:39,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:45:39,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:45:39,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:45:39,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:45:39,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:45:39,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:45:39,174 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_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb0a504b43b0de742fcc89ebbe9d313056bb1824edece6c56238a649b6f48626 [2021-11-09 10:45:39,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:45:39,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:45:39,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:45:39,552 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:45:39,555 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:45:39,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i [2021-11-09 10:45:39,651 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/data/fadbcfb14/22349123237c4be99346cff1f08dd6a4/FLAG9b19267f5 [2021-11-09 10:45:40,276 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:45:40,277 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i [2021-11-09 10:45:40,302 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/data/fadbcfb14/22349123237c4be99346cff1f08dd6a4/FLAG9b19267f5 [2021-11-09 10:45:40,545 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/data/fadbcfb14/22349123237c4be99346cff1f08dd6a4 [2021-11-09 10:45:40,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:45:40,550 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 10:45:40,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:45:40,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:45:40,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:45:40,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:45:40" (1/1) ... [2021-11-09 10:45:40,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@349c8789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:40, skipping insertion in model container [2021-11-09 10:45:40,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:45:40" (1/1) ... [2021-11-09 10:45:40,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:45:40,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:45:41,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:45:41,297 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-09 10:45:41,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2e713a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:41, skipping insertion in model container [2021-11-09 10:45:41,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:45:41,299 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 10:45:41,303 INFO L168 Benchmark]: Toolchain (without parser) took 750.21 ms. Allocated memory is still 140.5 MB. Free memory was 105.3 MB in the beginning and 112.8 MB in the end (delta: -7.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:45:41,304 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 46.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:45:41,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 747.23 ms. Allocated memory is still 140.5 MB. Free memory was 105.3 MB in the beginning and 112.8 MB in the end (delta: -7.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:45:41,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 46.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 747.23 ms. Allocated memory is still 140.5 MB. Free memory was 105.3 MB in the beginning and 112.8 MB in the end (delta: -7.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX --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 bb0a504b43b0de742fcc89ebbe9d313056bb1824edece6c56238a649b6f48626 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:45:43,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:45:43,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:45:43,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:45:43,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:45:43,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:45:43,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:45:43,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:45:43,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:45:43,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:45:43,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:45:43,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:45:43,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:45:43,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:45:43,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:45:43,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:45:43,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:45:43,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:45:43,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:45:43,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:45:43,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:45:43,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:45:43,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:45:43,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:45:43,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:45:43,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:45:43,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:45:43,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:45:43,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:45:43,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:45:43,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:45:43,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:45:43,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:45:43,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:45:43,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:45:43,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:45:43,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:45:43,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:45:43,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:45:43,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:45:43,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:45:43,940 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 10:45:43,995 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:45:43,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:45:43,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:45:43,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:45:43,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:45:43,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:45:43,999 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:45:43,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:45:43,999 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:45:43,999 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 10:45:44,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:45:44,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:45:44,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:45:44,000 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 10:45:44,001 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 10:45:44,001 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 10:45:44,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:45:44,001 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 10:45:44,002 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 10:45:44,002 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 10:45:44,002 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:45:44,002 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:45:44,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:45:44,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:45:44,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:45:44,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:45:44,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:45:44,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:45:44,004 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 10:45:44,005 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 10:45:44,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:45:44,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 10:45:44,005 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_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb0a504b43b0de742fcc89ebbe9d313056bb1824edece6c56238a649b6f48626 [2021-11-09 10:45:44,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:45:44,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:45:44,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:45:44,453 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:45:44,454 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:45:44,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i [2021-11-09 10:45:44,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/data/076229c7f/6d66b31da44c4fde87fc6a000fbd37b7/FLAG267010786 [2021-11-09 10:45:45,339 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:45:45,341 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i [2021-11-09 10:45:45,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/data/076229c7f/6d66b31da44c4fde87fc6a000fbd37b7/FLAG267010786 [2021-11-09 10:45:45,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/data/076229c7f/6d66b31da44c4fde87fc6a000fbd37b7 [2021-11-09 10:45:45,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:45:45,495 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 10:45:45,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:45:45,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:45:45,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:45:45,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:45:45" (1/1) ... [2021-11-09 10:45:45,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@601453f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:45, skipping insertion in model container [2021-11-09 10:45:45,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:45:45" (1/1) ... [2021-11-09 10:45:45,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:45:45,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:45:46,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:45:46,046 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 10:45:46,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:45:46,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:45:46,151 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:45:46,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:45:46,277 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:45:46,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:46 WrapperNode [2021-11-09 10:45:46,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:45:46,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:45:46,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:45:46,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:45:46,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:46" (1/1) ... [2021-11-09 10:45:46,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:46" (1/1) ... [2021-11-09 10:45:46,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:46" (1/1) ... [2021-11-09 10:45:46,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:46" (1/1) ... [2021-11-09 10:45:46,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:46" (1/1) ... [2021-11-09 10:45:46,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:46" (1/1) ... [2021-11-09 10:45:46,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:46" (1/1) ... [2021-11-09 10:45:46,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:45:46,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:45:46,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:45:46,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:45:46,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:46" (1/1) ... [2021-11-09 10:45:46,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:45:46,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:46,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:45:46,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:45:46,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 10:45:46,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:45:46,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-09 10:45:46,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 10:45:46,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 10:45:46,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 10:45:46,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 10:45:46,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 10:45:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 10:45:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-11-09 10:45:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-11-09 10:45:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-09 10:45:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-09 10:45:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-11-09 10:45:46,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-11-09 10:45:46,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-11-09 10:45:46,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-11-09 10:45:46,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-11-09 10:45:46,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-11-09 10:45:46,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-11-09 10:45:46,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-11-09 10:45:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-11-09 10:45:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-11-09 10:45:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-11-09 10:45:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-09 10:45:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-09 10:45:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-11-09 10:45:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-11-09 10:45:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-11-09 10:45:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-11-09 10:45:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-11-09 10:45:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-11-09 10:45:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-11-09 10:45:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-11-09 10:45:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-11-09 10:45:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-11-09 10:45:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-11-09 10:45:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-11-09 10:45:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-11-09 10:45:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-11-09 10:45:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-11-09 10:45:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-11-09 10:45:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_17 [2021-11-09 10:45:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure free_17 [2021-11-09 10:45:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-11-09 10:45:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 10:45:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-09 10:45:46,556 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-09 10:45:46,556 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-09 10:45:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 10:45:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 10:45:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 10:45:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 10:45:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 10:45:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 10:45:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 10:45:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 10:45:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 10:45:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 10:45:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 10:45:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 10:45:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 10:45:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 10:45:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 10:45:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 10:45:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 10:45:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 10:45:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 10:45:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 10:45:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 10:45:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 10:45:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 10:45:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 10:45:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 10:45:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 10:45:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 10:45:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 10:45:46,565 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 10:45:46,565 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 10:45:46,565 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 10:45:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 10:45:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 10:45:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 10:45:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 10:45:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 10:45:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 10:45:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 10:45:46,567 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 10:45:46,567 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 10:45:46,567 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 10:45:46,567 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 10:45:46,567 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 10:45:46,567 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 10:45:46,567 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 10:45:46,568 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 10:45:46,568 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 10:45:46,568 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 10:45:46,568 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 10:45:46,568 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 10:45:46,568 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 10:45:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 10:45:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 10:45:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 10:45:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 10:45:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 10:45:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 10:45:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 10:45:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 10:45:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 10:45:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 10:45:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 10:45:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 10:45:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 10:45:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 10:45:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 10:45:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 10:45:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 10:45:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 10:45:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 10:45:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 10:45:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 10:45:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 10:45:46,573 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 10:45:46,574 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 10:45:46,577 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 10:45:46,577 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 10:45:46,577 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 10:45:46,577 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 10:45:46,578 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 10:45:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 10:45:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 10:45:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 10:45:46,582 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 10:45:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 10:45:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 10:45:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 10:45:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 10:45:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 10:45:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 10:45:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 10:45:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 10:45:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 10:45:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 10:45:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 10:45:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 10:45:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 10:45:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 10:45:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 10:45:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 10:45:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 10:45:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 10:45:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 10:45:46,588 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 10:45:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 10:45:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 10:45:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 10:45:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-09 10:45:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-09 10:45:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-11-09 10:45:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-11-09 10:45:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-09 10:45:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-09 10:45:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-09 10:45:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 10:45:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-09 10:45:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-09 10:45:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-11-09 10:45:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 10:45:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-11-09 10:45:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-11-09 10:45:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-11-09 10:45:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 10:45:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-11-09 10:45:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-11-09 10:45:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-11-09 10:45:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-11-09 10:45:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-09 10:45:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-11-09 10:45:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 10:45:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-11-09 10:45:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-11-09 10:45:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-09 10:45:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-09 10:45:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-11-09 10:45:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 10:45:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 10:45:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-11-09 10:45:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-11-09 10:45:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-09 10:45:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-11-09 10:45:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-11-09 10:45:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-11-09 10:45:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-11-09 10:45:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-11-09 10:45:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-11-09 10:45:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-11-09 10:45:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-11-09 10:45:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-11-09 10:45:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-11-09 10:45:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-11-09 10:45:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-09 10:45:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-11-09 10:45:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-11-09 10:45:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_17 [2021-11-09 10:45:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure free_17 [2021-11-09 10:45:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-11-09 10:45:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 10:45:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 10:45:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:45:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 10:45:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:45:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 10:45:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-09 10:45:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-09 10:45:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-09 10:45:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-09 10:45:47,395 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 10:45:47,883 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 10:45:48,477 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:45:48,477 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-09 10:45:48,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:45:48 BoogieIcfgContainer [2021-11-09 10:45:48,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:45:48,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:45:48,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:45:48,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:45:48,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:45:45" (1/3) ... [2021-11-09 10:45:48,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0908d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:45:48, skipping insertion in model container [2021-11-09 10:45:48,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:46" (2/3) ... [2021-11-09 10:45:48,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0908d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:45:48, skipping insertion in model container [2021-11-09 10:45:48,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:45:48" (3/3) ... [2021-11-09 10:45:48,495 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test17_2-2.i [2021-11-09 10:45:48,501 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:45:48,501 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 90 error locations. [2021-11-09 10:45:48,570 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:45:48,578 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 10:45:48,579 INFO L340 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2021-11-09 10:45:48,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 88 states have (on average 1.625) internal successors, (143), 125 states have internal predecessors, (143), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-09 10:45:48,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-09 10:45:48,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:48,649 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:48,650 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 86 more)] === [2021-11-09 10:45:48,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:48,672 INFO L85 PathProgramCache]: Analyzing trace with hash 138691825, now seen corresponding path program 1 times [2021-11-09 10:45:48,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:45:48,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275590586] [2021-11-09 10:45:48,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:48,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:45:48,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:45:48,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:45:48,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 10:45:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:48,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 10:45:48,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:49,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:45:49,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:49,207 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:45:49,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275590586] [2021-11-09 10:45:49,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275590586] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:49,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:49,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 10:45:49,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777855594] [2021-11-09 10:45:49,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:45:49,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:45:49,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:45:49,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:45:49,250 INFO L87 Difference]: Start difference. First operand has 154 states, 88 states have (on average 1.625) internal successors, (143), 125 states have internal predecessors, (143), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 10:45:49,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:49,279 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2021-11-09 10:45:49,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:45:49,281 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2021-11-09 10:45:49,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:49,291 INFO L225 Difference]: With dead ends: 84 [2021-11-09 10:45:49,291 INFO L226 Difference]: Without dead ends: 81 [2021-11-09 10:45:49,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:45:49,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-09 10:45:49,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-11-09 10:45:49,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 47 states have (on average 1.574468085106383) internal successors, (74), 66 states have internal predecessors, (74), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-09 10:45:49,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2021-11-09 10:45:49,353 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 23 [2021-11-09 10:45:49,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:49,354 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2021-11-09 10:45:49,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 10:45:49,354 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2021-11-09 10:45:49,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-09 10:45:49,357 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:49,357 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:49,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:49,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:45:49,571 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 86 more)] === [2021-11-09 10:45:49,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:49,572 INFO L85 PathProgramCache]: Analyzing trace with hash -254335185, now seen corresponding path program 1 times [2021-11-09 10:45:49,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:45:49,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584471167] [2021-11-09 10:45:49,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:49,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:45:49,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:45:49,575 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:45:49,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 10:45:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:49,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:45:49,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:49,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:45:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:49,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:45:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:50,089 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:45:50,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584471167] [2021-11-09 10:45:50,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584471167] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:50,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:50,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 10:45:50,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610819112] [2021-11-09 10:45:50,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:45:50,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:45:50,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:45:50,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:45:50,102 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:45:50,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:50,344 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2021-11-09 10:45:50,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:45:50,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2021-11-09 10:45:50,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:50,349 INFO L225 Difference]: With dead ends: 91 [2021-11-09 10:45:50,349 INFO L226 Difference]: Without dead ends: 91 [2021-11-09 10:45:50,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:45:50,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-09 10:45:50,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2021-11-09 10:45:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 71 states have internal predecessors, (82), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-09 10:45:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2021-11-09 10:45:50,378 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 23 [2021-11-09 10:45:50,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:50,379 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions. [2021-11-09 10:45:50,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:45:50,379 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions. [2021-11-09 10:45:50,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-09 10:45:50,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:50,381 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:50,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:50,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:45:50,601 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 86 more)] === [2021-11-09 10:45:50,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:50,602 INFO L85 PathProgramCache]: Analyzing trace with hash -254335184, now seen corresponding path program 1 times [2021-11-09 10:45:50,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:45:50,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278985508] [2021-11-09 10:45:50,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:50,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:45:50,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:45:50,607 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:45:50,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 10:45:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:50,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 10:45:50,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:50,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:45:51,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:51,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:45:52,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:52,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:45:52,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278985508] [2021-11-09 10:45:52,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278985508] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:52,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:52,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 8] imperfect sequences [] total 18 [2021-11-09 10:45:52,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927899770] [2021-11-09 10:45:52,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 10:45:52,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:45:52,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 10:45:52,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-11-09 10:45:52,819 INFO L87 Difference]: Start difference. First operand 87 states and 99 transitions. Second operand has 19 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-09 10:45:54,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:54,474 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2021-11-09 10:45:54,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 10:45:54,475 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 23 [2021-11-09 10:45:54,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:54,477 INFO L225 Difference]: With dead ends: 99 [2021-11-09 10:45:54,477 INFO L226 Difference]: Without dead ends: 99 [2021-11-09 10:45:54,478 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2021-11-09 10:45:54,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-09 10:45:54,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2021-11-09 10:45:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 57 states have (on average 1.543859649122807) internal successors, (88), 76 states have internal predecessors, (88), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-09 10:45:54,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 105 transitions. [2021-11-09 10:45:54,488 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 105 transitions. Word has length 23 [2021-11-09 10:45:54,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:54,488 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 105 transitions. [2021-11-09 10:45:54,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-09 10:45:54,489 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 105 transitions. [2021-11-09 10:45:54,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-09 10:45:54,490 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:54,490 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:54,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:54,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:45:54,699 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:45:54,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:54,700 INFO L85 PathProgramCache]: Analyzing trace with hash 633168496, now seen corresponding path program 1 times [2021-11-09 10:45:54,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:45:54,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974698115] [2021-11-09 10:45:54,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:54,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:45:54,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:45:54,702 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:45:54,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 10:45:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:54,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 10:45:54,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:55,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:55,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:45:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:55,178 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:45:55,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974698115] [2021-11-09 10:45:55,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974698115] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:55,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:55,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-09 10:45:55,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924271182] [2021-11-09 10:45:55,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:45:55,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:45:55,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:45:55,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:45:55,181 INFO L87 Difference]: Start difference. First operand 92 states and 105 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:45:55,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:55,233 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2021-11-09 10:45:55,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:45:55,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2021-11-09 10:45:55,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:55,236 INFO L225 Difference]: With dead ends: 91 [2021-11-09 10:45:55,236 INFO L226 Difference]: Without dead ends: 91 [2021-11-09 10:45:55,236 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:45:55,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-09 10:45:55,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2021-11-09 10:45:55,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 55 states have (on average 1.490909090909091) internal successors, (82), 73 states have internal predecessors, (82), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-09 10:45:55,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2021-11-09 10:45:55,246 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 23 [2021-11-09 10:45:55,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:55,246 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2021-11-09 10:45:55,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 10:45:55,247 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2021-11-09 10:45:55,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 10:45:55,248 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:55,248 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:55,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:55,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:45:55,455 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:45:55,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:55,455 INFO L85 PathProgramCache]: Analyzing trace with hash 706370713, now seen corresponding path program 1 times [2021-11-09 10:45:55,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:45:55,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816869439] [2021-11-09 10:45:55,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:55,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:45:55,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:45:55,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:45:55,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 10:45:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:55,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:45:55,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:55,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:45:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:55,854 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:45:55,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816869439] [2021-11-09 10:45:55,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816869439] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:55,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:55,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-09 10:45:55,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047479308] [2021-11-09 10:45:55,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:45:55,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:45:55,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:45:55,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:45:55,856 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-09 10:45:55,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:55,913 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2021-11-09 10:45:55,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:45:55,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2021-11-09 10:45:55,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:55,915 INFO L225 Difference]: With dead ends: 91 [2021-11-09 10:45:55,916 INFO L226 Difference]: Without dead ends: 91 [2021-11-09 10:45:55,916 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:45:55,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-09 10:45:55,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2021-11-09 10:45:55,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 73 states have internal predecessors, (81), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-09 10:45:55,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2021-11-09 10:45:55,929 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 24 [2021-11-09 10:45:55,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:55,929 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2021-11-09 10:45:55,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-09 10:45:55,930 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2021-11-09 10:45:55,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 10:45:55,931 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:55,931 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:55,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:56,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:45:56,143 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:45:56,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:56,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1845786248, now seen corresponding path program 1 times [2021-11-09 10:45:56,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:45:56,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093819650] [2021-11-09 10:45:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:56,145 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:45:56,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:45:56,145 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:45:56,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 10:45:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:56,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 10:45:56,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:56,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:56,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:45:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:56,590 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:45:56,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093819650] [2021-11-09 10:45:56,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093819650] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:56,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:56,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 10:45:56,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586878052] [2021-11-09 10:45:56,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:45:56,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:45:56,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:45:56,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:56,593 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 10:45:56,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:56,762 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2021-11-09 10:45:56,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:45:56,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-11-09 10:45:56,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:56,765 INFO L225 Difference]: With dead ends: 127 [2021-11-09 10:45:56,765 INFO L226 Difference]: Without dead ends: 122 [2021-11-09 10:45:56,765 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:56,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-09 10:45:56,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 87. [2021-11-09 10:45:56,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 53 states have (on average 1.490566037735849) internal successors, (79), 72 states have internal predecessors, (79), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-11-09 10:45:56,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2021-11-09 10:45:56,774 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 24 [2021-11-09 10:45:56,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:56,775 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2021-11-09 10:45:56,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 10:45:56,775 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2021-11-09 10:45:56,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-09 10:45:56,776 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:56,777 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:56,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:56,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:45:56,990 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:45:56,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:56,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1837734000, now seen corresponding path program 1 times [2021-11-09 10:45:56,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:45:56,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87079526] [2021-11-09 10:45:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:56,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:45:56,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:45:56,995 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:45:57,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 10:45:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:57,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-09 10:45:57,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:57,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:45:58,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:58,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:46:01,170 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:01,170 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:46:01,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87079526] [2021-11-09 10:46:01,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87079526] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:46:01,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:46:01,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2021-11-09 10:46:01,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853177928] [2021-11-09 10:46:01,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-09 10:46:01,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:46:01,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-09 10:46:01,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2021-11-09 10:46:01,174 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 25 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-09 10:46:05,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:05,536 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2021-11-09 10:46:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 10:46:05,537 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 29 [2021-11-09 10:46:05,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:05,538 INFO L225 Difference]: With dead ends: 102 [2021-11-09 10:46:05,539 INFO L226 Difference]: Without dead ends: 102 [2021-11-09 10:46:05,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=271, Invalid=989, Unknown=0, NotChecked=0, Total=1260 [2021-11-09 10:46:05,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-09 10:46:05,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2021-11-09 10:46:05,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.4615384615384615) internal successors, (95), 84 states have internal predecessors, (95), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-11-09 10:46:05,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2021-11-09 10:46:05,547 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 29 [2021-11-09 10:46:05,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:05,547 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2021-11-09 10:46:05,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-09 10:46:05,548 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2021-11-09 10:46:05,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-09 10:46:05,549 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:05,550 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] [2021-11-09 10:46:05,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:05,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:46:05,762 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting free_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:46:05,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:05,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1955017851, now seen corresponding path program 1 times [2021-11-09 10:46:05,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:46:05,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359704827] [2021-11-09 10:46:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:05,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:46:05,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:46:05,764 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:46:05,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 10:46:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:06,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 10:46:06,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:06,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:46:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 10:46:06,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:46:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 10:46:06,458 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:46:06,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359704827] [2021-11-09 10:46:06,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359704827] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:06,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:06,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-11-09 10:46:06,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78143203] [2021-11-09 10:46:06,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 10:46:06,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:46:06,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 10:46:06,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:46:06,461 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-09 10:46:07,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:07,215 INFO L93 Difference]: Finished difference Result 166 states and 187 transitions. [2021-11-09 10:46:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 10:46:07,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-11-09 10:46:07,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:07,218 INFO L225 Difference]: With dead ends: 166 [2021-11-09 10:46:07,218 INFO L226 Difference]: Without dead ends: 166 [2021-11-09 10:46:07,219 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-09 10:46:07,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-09 10:46:07,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 116. [2021-11-09 10:46:07,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 78 states have (on average 1.4615384615384615) internal successors, (114), 98 states have internal predecessors, (114), 9 states have call successors, (9), 8 states have call predecessors, (9), 10 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) [2021-11-09 10:46:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2021-11-09 10:46:07,238 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 36 [2021-11-09 10:46:07,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:07,238 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2021-11-09 10:46:07,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-09 10:46:07,239 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2021-11-09 10:46:07,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-09 10:46:07,240 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:07,240 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] [2021-11-09 10:46:07,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:07,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:46:07,459 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting free_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:46:07,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:07,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1955017852, now seen corresponding path program 1 times [2021-11-09 10:46:07,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:46:07,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218957127] [2021-11-09 10:46:07,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:07,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:46:07,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:46:07,462 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:46:07,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 10:46:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:07,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-09 10:46:07,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:07,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:46:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:08,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:46:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:10,706 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:46:10,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218957127] [2021-11-09 10:46:10,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218957127] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:10,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:46:10,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2021-11-09 10:46:10,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539695423] [2021-11-09 10:46:10,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 10:46:10,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:46:10,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 10:46:10,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-11-09 10:46:10,709 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 10:46:16,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:16,921 INFO L93 Difference]: Finished difference Result 186 states and 217 transitions. [2021-11-09 10:46:16,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 10:46:16,925 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (7), 3 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 36 [2021-11-09 10:46:16,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:16,927 INFO L225 Difference]: With dead ends: 186 [2021-11-09 10:46:16,927 INFO L226 Difference]: Without dead ends: 186 [2021-11-09 10:46:16,928 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2021-11-09 10:46:16,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-09 10:46:16,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 160. [2021-11-09 10:46:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 137 states have internal predecessors, (172), 12 states have call successors, (12), 10 states have call predecessors, (12), 15 states have return successors, (20), 12 states have call predecessors, (20), 11 states have call successors, (20) [2021-11-09 10:46:16,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 204 transitions. [2021-11-09 10:46:16,953 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 204 transitions. Word has length 36 [2021-11-09 10:46:16,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:16,954 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 204 transitions. [2021-11-09 10:46:16,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 10:46:16,954 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 204 transitions. [2021-11-09 10:46:16,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-09 10:46:16,956 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:16,956 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:16,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:17,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:46:17,179 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting alloc_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:46:17,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:17,180 INFO L85 PathProgramCache]: Analyzing trace with hash -309330094, now seen corresponding path program 1 times [2021-11-09 10:46:17,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:46:17,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472117296] [2021-11-09 10:46:17,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:17,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:46:17,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:46:17,183 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:46:17,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 10:46:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:17,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 10:46:17,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:17,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:46:17,857 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-09 10:46:17,857 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 19 treesize of output 24 [2021-11-09 10:46:17,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 10:46:17,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:46:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 10:46:18,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:46:18,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472117296] [2021-11-09 10:46:18,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472117296] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:46:18,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:46:18,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-11-09 10:46:18,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038525631] [2021-11-09 10:46:18,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 10:46:18,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:46:18,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 10:46:18,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:46:18,282 INFO L87 Difference]: Start difference. First operand 160 states and 204 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-09 10:46:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:19,508 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2021-11-09 10:46:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 10:46:19,509 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), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-11-09 10:46:19,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:19,512 INFO L225 Difference]: With dead ends: 220 [2021-11-09 10:46:19,513 INFO L226 Difference]: Without dead ends: 218 [2021-11-09 10:46:19,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-11-09 10:46:19,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-09 10:46:19,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 160. [2021-11-09 10:46:19,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 116 states have (on average 1.4655172413793103) internal successors, (170), 136 states have internal predecessors, (170), 12 states have call successors, (12), 11 states have call predecessors, (12), 15 states have return successors, (20), 12 states have call predecessors, (20), 11 states have call successors, (20) [2021-11-09 10:46:19,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 202 transitions. [2021-11-09 10:46:19,528 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 202 transitions. Word has length 36 [2021-11-09 10:46:19,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:19,528 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 202 transitions. [2021-11-09 10:46:19,529 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), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-09 10:46:19,529 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 202 transitions. [2021-11-09 10:46:19,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-09 10:46:19,531 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:19,531 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:19,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:19,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:46:19,746 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alloc_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:46:19,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:19,747 INFO L85 PathProgramCache]: Analyzing trace with hash -309330093, now seen corresponding path program 1 times [2021-11-09 10:46:19,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:46:19,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138073858] [2021-11-09 10:46:19,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:19,747 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:46:19,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:46:19,748 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:46:19,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 10:46:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:20,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-09 10:46:20,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:20,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:46:20,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:46:23,551 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 10:46:23,551 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 43 treesize of output 45 [2021-11-09 10:46:23,578 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 10:46:23,578 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 37 treesize of output 37 [2021-11-09 10:46:23,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:23,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:46:48,486 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 29 treesize of output 27 [2021-11-09 10:46:49,068 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 28 treesize of output 26 [2021-11-09 10:46:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:49,326 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:46:49,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138073858] [2021-11-09 10:46:49,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138073858] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:46:49,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:46:49,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 30 [2021-11-09 10:46:49,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244027801] [2021-11-09 10:46:49,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-09 10:46:49,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:46:49,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-09 10:46:49,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=818, Unknown=7, NotChecked=0, Total=930 [2021-11-09 10:46:49,329 INFO L87 Difference]: Start difference. First operand 160 states and 202 transitions. Second operand has 31 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 6 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-09 10:48:01,643 WARN L207 SmtUtils]: Spent 12.27 s on a formula simplification that was a NOOP. DAG size: 71 [2021-11-09 10:50:58,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:50:58,280 INFO L93 Difference]: Finished difference Result 371 states and 466 transitions. [2021-11-09 10:50:58,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 10:50:58,282 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 6 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 36 [2021-11-09 10:50:58,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:50:58,286 INFO L225 Difference]: With dead ends: 371 [2021-11-09 10:50:58,287 INFO L226 Difference]: Without dead ends: 371 [2021-11-09 10:50:58,289 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 92.9s TimeCoverageRelationStatistics Valid=277, Invalid=2249, Unknown=24, NotChecked=0, Total=2550 [2021-11-09 10:50:58,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-09 10:50:58,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 243. [2021-11-09 10:50:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 186 states have (on average 1.489247311827957) internal successors, (277), 211 states have internal predecessors, (277), 18 states have call successors, (18), 12 states have call predecessors, (18), 22 states have return successors, (40), 19 states have call predecessors, (40), 17 states have call successors, (40) [2021-11-09 10:50:58,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 335 transitions. [2021-11-09 10:50:58,309 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 335 transitions. Word has length 36 [2021-11-09 10:50:58,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:50:58,310 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 335 transitions. [2021-11-09 10:50:58,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 6 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-09 10:50:58,310 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 335 transitions. [2021-11-09 10:50:58,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-09 10:50:58,312 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:50:58,313 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] [2021-11-09 10:50:58,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-09 10:50:58,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:50:58,528 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting free_17Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:50:58,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:50:58,528 INFO L85 PathProgramCache]: Analyzing trace with hash 476011625, now seen corresponding path program 1 times [2021-11-09 10:50:58,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:50:58,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429422964] [2021-11-09 10:50:58,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:50:58,529 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:50:58,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:50:58,530 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:50:58,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 10:50:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:50:58,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 10:50:58,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:50:58,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-09 10:50:59,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-09 10:50:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:59,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:50:59,667 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 14 treesize of output 12 [2021-11-09 10:50:59,674 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 22 treesize of output 20 [2021-11-09 10:50:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:50:59,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:50:59,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429422964] [2021-11-09 10:50:59,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429422964] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:50:59,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:50:59,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-11-09 10:50:59,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702258086] [2021-11-09 10:50:59,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 10:50:59,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:50:59,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 10:50:59,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 10:50:59,795 INFO L87 Difference]: Start difference. First operand 243 states and 335 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-09 10:51:14,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:51:14,851 INFO L93 Difference]: Finished difference Result 384 states and 522 transitions. [2021-11-09 10:51:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 10:51:14,853 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2021-11-09 10:51:14,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:51:14,858 INFO L225 Difference]: With dead ends: 384 [2021-11-09 10:51:14,858 INFO L226 Difference]: Without dead ends: 384 [2021-11-09 10:51:14,859 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-11-09 10:51:14,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-09 10:51:14,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 321. [2021-11-09 10:51:14,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 250 states have (on average 1.508) internal successors, (377), 280 states have internal predecessors, (377), 22 states have call successors, (22), 16 states have call predecessors, (22), 32 states have return successors, (52), 24 states have call predecessors, (52), 21 states have call successors, (52) [2021-11-09 10:51:14,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 451 transitions. [2021-11-09 10:51:14,880 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 451 transitions. Word has length 37 [2021-11-09 10:51:14,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:51:14,881 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 451 transitions. [2021-11-09 10:51:14,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-09 10:51:14,881 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 451 transitions. [2021-11-09 10:51:14,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 10:51:14,883 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:51:14,883 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] [2021-11-09 10:51:14,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-09 10:51:15,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:51:15,099 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting free_17Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:51:15,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:51:15,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1871458939, now seen corresponding path program 1 times [2021-11-09 10:51:15,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:51:15,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298290868] [2021-11-09 10:51:15,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:51:15,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:51:15,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:51:15,102 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:51:15,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 10:51:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:51:15,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 10:51:15,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:51:15,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-09 10:51:16,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-09 10:51:16,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:16,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:51:16,959 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 14 treesize of output 12 [2021-11-09 10:51:16,967 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 26 treesize of output 24 [2021-11-09 10:51:17,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:17,206 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:51:17,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298290868] [2021-11-09 10:51:17,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298290868] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:51:17,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:51:17,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-11-09 10:51:17,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438808632] [2021-11-09 10:51:17,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 10:51:17,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:51:17,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 10:51:17,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-09 10:51:17,208 INFO L87 Difference]: Start difference. First operand 321 states and 451 transitions. Second operand has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 4 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-09 10:51:26,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:51:26,672 INFO L93 Difference]: Finished difference Result 491 states and 644 transitions. [2021-11-09 10:51:26,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 10:51:26,673 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 4 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 38 [2021-11-09 10:51:26,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:51:26,678 INFO L225 Difference]: With dead ends: 491 [2021-11-09 10:51:26,678 INFO L226 Difference]: Without dead ends: 491 [2021-11-09 10:51:26,679 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=183, Invalid=629, Unknown=0, NotChecked=0, Total=812 [2021-11-09 10:51:26,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-11-09 10:51:26,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 391. [2021-11-09 10:51:26,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 309 states have (on average 1.5177993527508091) internal successors, (469), 341 states have internal predecessors, (469), 26 states have call successors, (26), 21 states have call predecessors, (26), 39 states have return successors, (58), 28 states have call predecessors, (58), 25 states have call successors, (58) [2021-11-09 10:51:26,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 553 transitions. [2021-11-09 10:51:26,707 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 553 transitions. Word has length 38 [2021-11-09 10:51:26,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:51:26,708 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 553 transitions. [2021-11-09 10:51:26,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 4 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-09 10:51:26,708 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 553 transitions. [2021-11-09 10:51:26,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 10:51:26,710 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:51:26,710 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:51:26,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-09 10:51:26,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:51:26,926 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting alloc_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:51:26,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:51:26,927 INFO L85 PathProgramCache]: Analyzing trace with hash -913520737, now seen corresponding path program 1 times [2021-11-09 10:51:26,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:51:26,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228905897] [2021-11-09 10:51:26,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:51:26,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:51:26,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:51:26,930 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:51:26,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-09 10:51:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:51:27,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:51:27,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:51:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 10:51:27,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:51:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 10:51:27,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:51:27,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228905897] [2021-11-09 10:51:27,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228905897] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:51:27,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:51:27,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-09 10:51:27,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599334569] [2021-11-09 10:51:27,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:51:27,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:51:27,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:51:27,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:51:27,720 INFO L87 Difference]: Start difference. First operand 391 states and 553 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-09 10:51:27,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:51:27,832 INFO L93 Difference]: Finished difference Result 327 states and 450 transitions. [2021-11-09 10:51:27,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:51:27,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2021-11-09 10:51:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:51:27,836 INFO L225 Difference]: With dead ends: 327 [2021-11-09 10:51:27,836 INFO L226 Difference]: Without dead ends: 327 [2021-11-09 10:51:27,837 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:51:27,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-11-09 10:51:27,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 307. [2021-11-09 10:51:27,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 239 states have (on average 1.4769874476987448) internal successors, (353), 264 states have internal predecessors, (353), 22 states have call successors, (22), 17 states have call predecessors, (22), 29 states have return successors, (47), 25 states have call predecessors, (47), 21 states have call successors, (47) [2021-11-09 10:51:27,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 422 transitions. [2021-11-09 10:51:27,856 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 422 transitions. Word has length 38 [2021-11-09 10:51:27,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:51:27,857 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 422 transitions. [2021-11-09 10:51:27,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-09 10:51:27,857 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 422 transitions. [2021-11-09 10:51:27,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 10:51:27,858 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:51:27,859 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:51:27,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-09 10:51:28,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:51:28,075 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting alloc_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:51:28,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:51:28,075 INFO L85 PathProgramCache]: Analyzing trace with hash 829289598, now seen corresponding path program 1 times [2021-11-09 10:51:28,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:51:28,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829715419] [2021-11-09 10:51:28,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:51:28,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:51:28,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:51:28,077 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:51:28,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-09 10:51:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:51:28,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:51:28,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:51:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-09 10:51:28,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:51:28,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-09 10:51:28,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:51:28,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829715419] [2021-11-09 10:51:28,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829715419] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:51:28,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:51:28,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 10:51:28,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119722934] [2021-11-09 10:51:28,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:51:28,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:51:28,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:51:28,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:51:28,884 INFO L87 Difference]: Start difference. First operand 307 states and 422 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-09 10:51:29,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:51:29,206 INFO L93 Difference]: Finished difference Result 282 states and 371 transitions. [2021-11-09 10:51:29,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:51:29,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2021-11-09 10:51:29,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:51:29,210 INFO L225 Difference]: With dead ends: 282 [2021-11-09 10:51:29,210 INFO L226 Difference]: Without dead ends: 282 [2021-11-09 10:51:29,210 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:51:29,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-09 10:51:29,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 265. [2021-11-09 10:51:29,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 203 states have (on average 1.4334975369458127) internal successors, (291), 226 states have internal predecessors, (291), 20 states have call successors, (20), 15 states have call predecessors, (20), 25 states have return successors, (42), 23 states have call predecessors, (42), 19 states have call successors, (42) [2021-11-09 10:51:29,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 353 transitions. [2021-11-09 10:51:29,226 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 353 transitions. Word has length 38 [2021-11-09 10:51:29,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:51:29,227 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 353 transitions. [2021-11-09 10:51:29,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-09 10:51:29,227 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 353 transitions. [2021-11-09 10:51:29,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-09 10:51:29,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:51:29,229 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] [2021-11-09 10:51:29,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-09 10:51:29,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:51:29,445 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:51:29,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:51:29,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2115617282, now seen corresponding path program 1 times [2021-11-09 10:51:29,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:51:29,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088029103] [2021-11-09 10:51:29,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:51:29,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:51:29,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:51:29,448 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:51:29,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-09 10:51:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:51:30,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 10:51:30,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:51:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 10:51:31,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:51:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 10:51:31,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:51:31,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088029103] [2021-11-09 10:51:31,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088029103] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:51:31,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:51:31,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-11-09 10:51:31,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386701246] [2021-11-09 10:51:31,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 10:51:31,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:51:31,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 10:51:31,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:51:31,472 INFO L87 Difference]: Start difference. First operand 265 states and 353 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 4 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-09 10:51:31,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:51:31,973 INFO L93 Difference]: Finished difference Result 264 states and 351 transitions. [2021-11-09 10:51:31,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:51:31,975 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 4 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 39 [2021-11-09 10:51:31,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:51:31,977 INFO L225 Difference]: With dead ends: 264 [2021-11-09 10:51:31,977 INFO L226 Difference]: Without dead ends: 264 [2021-11-09 10:51:31,978 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-09 10:51:31,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-09 10:51:31,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-11-09 10:51:31,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 203 states have (on average 1.4236453201970443) internal successors, (289), 225 states have internal predecessors, (289), 20 states have call successors, (20), 15 states have call predecessors, (20), 25 states have return successors, (42), 23 states have call predecessors, (42), 19 states have call successors, (42) [2021-11-09 10:51:31,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 351 transitions. [2021-11-09 10:51:31,993 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 351 transitions. Word has length 39 [2021-11-09 10:51:31,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:51:31,994 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 351 transitions. [2021-11-09 10:51:31,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 4 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-09 10:51:31,994 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 351 transitions. [2021-11-09 10:51:31,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-09 10:51:31,995 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:51:31,996 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:51:32,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-09 10:51:32,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:51:32,211 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting alloc_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:51:32,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:51:32,212 INFO L85 PathProgramCache]: Analyzing trace with hash -274996284, now seen corresponding path program 1 times [2021-11-09 10:51:32,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:51:32,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73652213] [2021-11-09 10:51:32,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:51:32,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:51:32,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:51:32,214 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:51:32,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-09 10:51:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:51:32,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 10:51:32,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:51:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-09 10:51:33,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:51:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-09 10:51:33,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:51:33,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73652213] [2021-11-09 10:51:33,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73652213] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:51:33,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:51:33,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-09 10:51:33,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711834445] [2021-11-09 10:51:33,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:51:33,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:51:33,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:51:33,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:51:33,397 INFO L87 Difference]: Start difference. First operand 264 states and 351 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-09 10:51:33,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:51:33,451 INFO L93 Difference]: Finished difference Result 187 states and 227 transitions. [2021-11-09 10:51:33,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:51:33,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2021-11-09 10:51:33,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:51:33,455 INFO L225 Difference]: With dead ends: 187 [2021-11-09 10:51:33,455 INFO L226 Difference]: Without dead ends: 187 [2021-11-09 10:51:33,455 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:51:33,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-09 10:51:33,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 181. [2021-11-09 10:51:33,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 134 states have (on average 1.3582089552238805) internal successors, (182), 151 states have internal predecessors, (182), 14 states have call successors, (14), 13 states have call predecessors, (14), 17 states have return successors, (24), 16 states have call predecessors, (24), 13 states have call successors, (24) [2021-11-09 10:51:33,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 220 transitions. [2021-11-09 10:51:33,463 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 220 transitions. Word has length 39 [2021-11-09 10:51:33,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:51:33,464 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 220 transitions. [2021-11-09 10:51:33,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-09 10:51:33,464 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 220 transitions. [2021-11-09 10:51:33,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-09 10:51:33,466 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:51:33,466 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:51:33,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-09 10:51:33,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:51:33,682 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting free_17Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:51:33,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:51:33,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1236299315, now seen corresponding path program 2 times [2021-11-09 10:51:33,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:51:33,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486533499] [2021-11-09 10:51:33,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:51:33,684 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:51:33,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:51:33,685 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:51:33,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-09 10:51:34,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 10:51:34,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:51:34,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 10:51:34,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:51:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-09 10:51:34,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:51:35,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-09 10:51:35,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:51:35,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486533499] [2021-11-09 10:51:35,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486533499] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:51:35,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:51:35,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 9 [2021-11-09 10:51:35,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138246760] [2021-11-09 10:51:35,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 10:51:35,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:51:35,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 10:51:35,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:51:35,431 INFO L87 Difference]: Start difference. First operand 181 states and 220 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-09 10:51:35,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:51:35,725 INFO L93 Difference]: Finished difference Result 188 states and 226 transitions. [2021-11-09 10:51:35,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 10:51:35,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 41 [2021-11-09 10:51:35,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:51:35,728 INFO L225 Difference]: With dead ends: 188 [2021-11-09 10:51:35,728 INFO L226 Difference]: Without dead ends: 182 [2021-11-09 10:51:35,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:51:35,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-09 10:51:35,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2021-11-09 10:51:35,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 132 states have (on average 1.3484848484848484) internal successors, (178), 149 states have internal predecessors, (178), 14 states have call successors, (14), 13 states have call predecessors, (14), 17 states have return successors, (24), 16 states have call predecessors, (24), 13 states have call successors, (24) [2021-11-09 10:51:35,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 216 transitions. [2021-11-09 10:51:35,738 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 216 transitions. Word has length 41 [2021-11-09 10:51:35,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:51:35,738 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 216 transitions. [2021-11-09 10:51:35,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-09 10:51:35,739 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 216 transitions. [2021-11-09 10:51:35,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-09 10:51:35,740 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:51:35,740 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:51:35,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-09 10:51:35,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:51:35,955 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:51:35,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:51:35,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1858382576, now seen corresponding path program 2 times [2021-11-09 10:51:35,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:51:35,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585812115] [2021-11-09 10:51:35,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:51:35,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:51:35,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:51:35,958 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:51:35,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-09 10:51:36,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:51:36,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:51:36,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-09 10:51:36,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:51:36,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:51:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:39,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:51:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:51:45,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:51:45,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585812115] [2021-11-09 10:51:45,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585812115] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:51:45,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:51:45,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 30 [2021-11-09 10:51:45,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421381687] [2021-11-09 10:51:45,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-09 10:51:45,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:51:45,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-09 10:51:45,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2021-11-09 10:51:45,340 INFO L87 Difference]: Start difference. First operand 179 states and 216 transitions. Second operand has 31 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-09 10:52:21,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:52:21,431 INFO L93 Difference]: Finished difference Result 213 states and 288 transitions. [2021-11-09 10:52:21,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-09 10:52:21,433 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 41 [2021-11-09 10:52:21,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:52:21,435 INFO L225 Difference]: With dead ends: 213 [2021-11-09 10:52:21,435 INFO L226 Difference]: Without dead ends: 213 [2021-11-09 10:52:21,437 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 35.5s TimeCoverageRelationStatistics Valid=784, Invalid=2756, Unknown=0, NotChecked=0, Total=3540 [2021-11-09 10:52:21,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-09 10:52:21,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 203. [2021-11-09 10:52:21,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 156 states have (on average 1.3461538461538463) internal successors, (210), 173 states have internal predecessors, (210), 14 states have call successors, (14), 13 states have call predecessors, (14), 17 states have return successors, (24), 16 states have call predecessors, (24), 13 states have call successors, (24) [2021-11-09 10:52:21,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 248 transitions. [2021-11-09 10:52:21,450 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 248 transitions. Word has length 41 [2021-11-09 10:52:21,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:52:21,451 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 248 transitions. [2021-11-09 10:52:21,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-09 10:52:21,451 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 248 transitions. [2021-11-09 10:52:21,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-09 10:52:21,452 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:52:21,453 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-09 10:52:21,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-09 10:52:21,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:52:21,667 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting free_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:52:21,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:52:21,667 INFO L85 PathProgramCache]: Analyzing trace with hash 799634172, now seen corresponding path program 1 times [2021-11-09 10:52:21,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:52:21,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142929875] [2021-11-09 10:52:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:52:21,668 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:52:21,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:52:21,669 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:52:21,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-09 10:52:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:52:22,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-09 10:52:22,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:52:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 10:52:23,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:52:23,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-09 10:52:24,251 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 10:52:24,251 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 19 treesize of output 23 [2021-11-09 10:52:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 10:52:25,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:52:25,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142929875] [2021-11-09 10:52:25,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142929875] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:52:25,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:52:25,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-11-09 10:52:25,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071733200] [2021-11-09 10:52:25,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 10:52:25,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:52:25,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 10:52:25,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-09 10:52:25,312 INFO L87 Difference]: Start difference. First operand 203 states and 248 transitions. Second operand has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 14 states have internal predecessors, (53), 7 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-09 10:52:28,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:52:28,437 INFO L93 Difference]: Finished difference Result 244 states and 294 transitions. [2021-11-09 10:52:28,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 10:52:28,439 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 14 states have internal predecessors, (53), 7 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 46 [2021-11-09 10:52:28,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:52:28,442 INFO L225 Difference]: With dead ends: 244 [2021-11-09 10:52:28,442 INFO L226 Difference]: Without dead ends: 244 [2021-11-09 10:52:28,442 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-09 10:52:28,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-09 10:52:28,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 221. [2021-11-09 10:52:28,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 171 states have (on average 1.3508771929824561) internal successors, (231), 190 states have internal predecessors, (231), 15 states have call successors, (15), 14 states have call predecessors, (15), 20 states have return successors, (28), 16 states have call predecessors, (28), 14 states have call successors, (28) [2021-11-09 10:52:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 274 transitions. [2021-11-09 10:52:28,452 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 274 transitions. Word has length 46 [2021-11-09 10:52:28,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:52:28,453 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 274 transitions. [2021-11-09 10:52:28,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 14 states have internal predecessors, (53), 7 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-09 10:52:28,454 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 274 transitions. [2021-11-09 10:52:28,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-09 10:52:28,455 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:52:28,455 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:52:28,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-09 10:52:28,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:52:28,671 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting alloc_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:52:28,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:52:28,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1464713773, now seen corresponding path program 1 times [2021-11-09 10:52:28,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:52:28,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086246309] [2021-11-09 10:52:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:52:28,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:52:28,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:52:28,675 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:52:28,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-09 10:52:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:52:29,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 10:52:29,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:52:30,451 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-09 10:52:30,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:52:31,309 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-09 10:52:31,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:52:31,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086246309] [2021-11-09 10:52:31,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086246309] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:52:31,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:52:31,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2021-11-09 10:52:31,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150819230] [2021-11-09 10:52:31,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 10:52:31,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:52:31,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 10:52:31,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-11-09 10:52:31,311 INFO L87 Difference]: Start difference. First operand 221 states and 274 transitions. Second operand has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-09 10:52:32,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:52:32,364 INFO L93 Difference]: Finished difference Result 242 states and 294 transitions. [2021-11-09 10:52:32,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 10:52:32,366 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 46 [2021-11-09 10:52:32,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:52:32,367 INFO L225 Difference]: With dead ends: 242 [2021-11-09 10:52:32,368 INFO L226 Difference]: Without dead ends: 242 [2021-11-09 10:52:32,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2021-11-09 10:52:32,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-09 10:52:32,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 229. [2021-11-09 10:52:32,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 178 states have (on average 1.3370786516853932) internal successors, (238), 197 states have internal predecessors, (238), 15 states have call successors, (15), 14 states have call predecessors, (15), 21 states have return successors, (26), 17 states have call predecessors, (26), 14 states have call successors, (26) [2021-11-09 10:52:32,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 279 transitions. [2021-11-09 10:52:32,379 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 279 transitions. Word has length 46 [2021-11-09 10:52:32,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:52:32,380 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 279 transitions. [2021-11-09 10:52:32,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-09 10:52:32,380 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 279 transitions. [2021-11-09 10:52:32,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-09 10:52:32,382 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:52:32,382 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-09 10:52:32,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-09 10:52:32,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:52:32,595 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting free_17Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:52:32,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:52:32,595 INFO L85 PathProgramCache]: Analyzing trace with hash -981144087, now seen corresponding path program 1 times [2021-11-09 10:52:32,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:52:32,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908152276] [2021-11-09 10:52:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:52:32,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:52:32,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:52:32,597 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:52:32,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-09 10:52:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:52:33,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-09 10:52:33,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:52:33,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-09 10:52:34,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-09 10:52:34,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 10:52:34,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:52:34,494 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 36 treesize of output 32 [2021-11-09 10:52:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 10:52:35,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:52:35,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908152276] [2021-11-09 10:52:35,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908152276] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:52:35,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:52:35,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-11-09 10:52:35,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880254105] [2021-11-09 10:52:35,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 10:52:35,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:52:35,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 10:52:35,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-09 10:52:35,072 INFO L87 Difference]: Start difference. First operand 229 states and 279 transitions. Second operand has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-09 10:52:37,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:52:37,037 INFO L93 Difference]: Finished difference Result 305 states and 366 transitions. [2021-11-09 10:52:37,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 10:52:37,040 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 47 [2021-11-09 10:52:37,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:52:37,042 INFO L225 Difference]: With dead ends: 305 [2021-11-09 10:52:37,043 INFO L226 Difference]: Without dead ends: 305 [2021-11-09 10:52:37,043 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-09 10:52:37,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-11-09 10:52:37,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 253. [2021-11-09 10:52:37,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 198 states have (on average 1.3636363636363635) internal successors, (270), 218 states have internal predecessors, (270), 17 states have call successors, (17), 15 states have call predecessors, (17), 23 states have return successors, (31), 19 states have call predecessors, (31), 16 states have call successors, (31) [2021-11-09 10:52:37,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 318 transitions. [2021-11-09 10:52:37,057 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 318 transitions. Word has length 47 [2021-11-09 10:52:37,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:52:37,057 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 318 transitions. [2021-11-09 10:52:37,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-09 10:52:37,058 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 318 transitions. [2021-11-09 10:52:37,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-09 10:52:37,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:52:37,059 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1] [2021-11-09 10:52:37,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-09 10:52:37,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:52:37,296 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting free_17Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:52:37,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:52:37,297 INFO L85 PathProgramCache]: Analyzing trace with hash -350695173, now seen corresponding path program 1 times [2021-11-09 10:52:37,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:52:37,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147171307] [2021-11-09 10:52:37,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:52:37,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:52:37,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:52:37,298 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:52:37,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-09 10:52:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:52:38,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-09 10:52:38,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:52:38,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:52:38,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147171307] [2021-11-09 10:52:38,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ldv_malloc_#res.base|] [2021-11-09 10:52:38,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [457972171] [2021-11-09 10:52:38,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:52:38,676 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-09 10:52:38,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/cvc4 [2021-11-09 10:52:38,678 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-09 10:52:38,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-09 10:52:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:52:39,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-09 10:52:39,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:52:40,508 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 15 treesize of output 11 [2021-11-09 10:52:41,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-09 10:52:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 10:52:41,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:52:41,979 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 36 treesize of output 32 [2021-11-09 10:52:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 10:52:42,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [457972171] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:52:42,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:52:42,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 19 [2021-11-09 10:52:42,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905722759] [2021-11-09 10:52:42,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 10:52:42,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:52:42,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 10:52:42,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2021-11-09 10:52:42,908 INFO L87 Difference]: Start difference. First operand 253 states and 318 transitions. Second operand has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 15 states have internal predecessors, (51), 6 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-09 10:52:46,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:52:46,465 INFO L93 Difference]: Finished difference Result 304 states and 364 transitions. [2021-11-09 10:52:46,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-09 10:52:46,467 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 15 states have internal predecessors, (51), 6 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 48 [2021-11-09 10:52:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:52:46,470 INFO L225 Difference]: With dead ends: 304 [2021-11-09 10:52:46,470 INFO L226 Difference]: Without dead ends: 304 [2021-11-09 10:52:46,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2021-11-09 10:52:46,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-09 10:52:46,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 273. [2021-11-09 10:52:46,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 214 states have (on average 1.3691588785046729) internal successors, (293), 236 states have internal predecessors, (293), 18 states have call successors, (18), 16 states have call predecessors, (18), 26 states have return successors, (34), 20 states have call predecessors, (34), 17 states have call successors, (34) [2021-11-09 10:52:46,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 345 transitions. [2021-11-09 10:52:46,485 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 345 transitions. Word has length 48 [2021-11-09 10:52:46,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:52:46,486 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 345 transitions. [2021-11-09 10:52:46,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 15 states have internal predecessors, (51), 6 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-09 10:52:46,486 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 345 transitions. [2021-11-09 10:52:46,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-09 10:52:46,487 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:52:46,488 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1] [2021-11-09 10:52:46,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-09 10:52:46,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-09 10:52:46,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt [2021-11-09 10:52:46,906 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting free_17Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:52:46,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:52:46,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2013351979, now seen corresponding path program 1 times [2021-11-09 10:52:46,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:52:46,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524795053] [2021-11-09 10:52:46,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:52:46,907 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:52:46,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:52:46,909 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:52:46,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-09 10:52:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:52:47,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-09 10:52:47,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:52:47,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:52:48,190 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 21 treesize of output 17 [2021-11-09 10:52:48,484 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 26 treesize of output 18 [2021-11-09 10:52:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 10:52:48,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:52:49,160 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 56 treesize of output 52 [2021-11-09 10:52:49,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 10:52:49,982 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:52:49,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524795053] [2021-11-09 10:52:49,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524795053] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:52:49,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:52:49,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-11-09 10:52:49,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065945234] [2021-11-09 10:52:49,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 10:52:49,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:52:49,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 10:52:49,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-09 10:52:49,985 INFO L87 Difference]: Start difference. First operand 273 states and 345 transitions. Second operand has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-09 10:52:52,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:52:52,141 INFO L93 Difference]: Finished difference Result 277 states and 349 transitions. [2021-11-09 10:52:52,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 10:52:52,142 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 49 [2021-11-09 10:52:52,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:52:52,145 INFO L225 Difference]: With dead ends: 277 [2021-11-09 10:52:52,145 INFO L226 Difference]: Without dead ends: 277 [2021-11-09 10:52:52,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 79 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-09 10:52:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-09 10:52:52,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 254. [2021-11-09 10:52:52,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 199 states have (on average 1.3618090452261307) internal successors, (271), 219 states have internal predecessors, (271), 17 states have call successors, (17), 15 states have call predecessors, (17), 23 states have return successors, (31), 19 states have call predecessors, (31), 16 states have call successors, (31) [2021-11-09 10:52:52,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 319 transitions. [2021-11-09 10:52:52,158 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 319 transitions. Word has length 49 [2021-11-09 10:52:52,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:52:52,159 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 319 transitions. [2021-11-09 10:52:52,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-09 10:52:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 319 transitions. [2021-11-09 10:52:52,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-09 10:52:52,160 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:52:52,161 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:52:52,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-09 10:52:52,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:52:52,379 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting alloc_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-11-09 10:52:52,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:52:52,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1603414821, now seen corresponding path program 2 times [2021-11-09 10:52:52,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:52:52,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104253628] [2021-11-09 10:52:52,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:52:52,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:52:52,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:52:52,381 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:52:52,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-09 10:52:53,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:52:53,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:52:53,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-09 10:52:53,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:52:53,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:52:53,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:52:58,145 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 10:52:58,146 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 44 treesize of output 44 [2021-11-09 10:52:58,173 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 10:52:58,173 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 38 treesize of output 38 [2021-11-09 10:52:59,244 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 10:52:59,245 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 48 treesize of output 48 [2021-11-09 10:52:59,283 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 10:52:59,283 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 42 treesize of output 42 [2021-11-09 10:52:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-09 10:52:59,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:53:31,054 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-09 10:53:31,055 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 48 treesize of output 47 [2021-11-09 10:53:43,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:53:43,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104253628] [2021-11-09 10:53:43,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|v_ldv_malloc_#res.base_151|] [2021-11-09 10:53:43,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1678031399] [2021-11-09 10:53:43,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:53:43,723 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-09 10:53:43,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/cvc4 [2021-11-09 10:53:43,724 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-09 10:53:43,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-11-09 10:53:45,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:53:45,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:53:45,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-09 10:53:45,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:53:45,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:53:45,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:53:46,371 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 10:53:46,371 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 45 treesize of output 45 [2021-11-09 10:53:46,403 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 10:53:46,403 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 39 treesize of output 39 [2021-11-09 10:53:47,057 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 10:53:47,058 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 46 treesize of output 46 [2021-11-09 10:53:47,095 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 10:53:47,096 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 40 treesize of output 40 [2021-11-09 10:53:47,385 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-09 10:53:47,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:54:34,128 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-09 10:54:34,129 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 48 treesize of output 47 [2021-11-09 10:54:50,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|v_ldv_malloc_#res.base_151|] [2021-11-09 10:54:50,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107562472] [2021-11-09 10:54:50,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:54:50,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:54:50,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:54:50,812 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:54:50,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-09 10:54:51,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:54:51,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:54:51,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-09 10:54:51,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:54:51,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:54:51,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 10:54:53,019 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 10:54:53,020 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 45 treesize of output 45 [2021-11-09 10:54:53,053 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 10:54:53,054 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 39 treesize of output 39 [2021-11-09 10:54:53,851 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 10:54:53,852 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 44 treesize of output 44 [2021-11-09 10:54:53,876 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 10:54:53,876 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 38 treesize of output 38 [2021-11-09 10:54:54,126 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-09 10:54:54,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:55:48,594 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-09 10:55:48,595 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 48 treesize of output 47 [2021-11-09 10:56:08,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|v_ldv_malloc_#res.base_151|] [2021-11-09 10:56:08,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:56:08,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-09 10:56:08,059 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-09 10:56:08,059 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-09 10:56:08,066 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err1REQUIRES_VIOLATION [2021-11-09 10:56:08,067 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-11-09 10:56:08,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-11-09 10:56:08,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-11-09 10:56:08,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-11-09 10:56:08,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-11-09 10:56:08,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-11-09 10:56:08,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-11-09 10:56:08,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-11-09 10:56:08,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-11-09 10:56:08,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-11-09 10:56:08,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-11-09 10:56:08,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-11-09 10:56:08,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-11-09 10:56:08,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-11-09 10:56:08,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-11-09 10:56:08,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-11-09 10:56:08,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-11-09 10:56:08,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-11-09 10:56:08,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err0REQUIRES_VIOLATION [2021-11-09 10:56:08,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err2REQUIRES_VIOLATION [2021-11-09 10:56:08,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err3REQUIRES_VIOLATION [2021-11-09 10:56:08,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err7REQUIRES_VIOLATION [2021-11-09 10:56:08,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err8REQUIRES_VIOLATION [2021-11-09 10:56:08,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-11-09 10:56:08,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-11-09 10:56:08,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-11-09 10:56:08,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-11-09 10:56:08,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-11-09 10:56:08,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,080 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,080 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,080 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,080 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-11-09 10:56:08,080 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-11-09 10:56:08,080 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,081 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,081 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err0REQUIRES_VIOLATION [2021-11-09 10:56:08,081 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err1REQUIRES_VIOLATION [2021-11-09 10:56:08,081 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err2ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,081 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err3ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,081 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,082 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION [2021-11-09 10:56:08,082 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION [2021-11-09 10:56:08,082 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,082 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,082 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 10:56:08,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-09 10:56:08,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-11-09 10:56:08,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-09 10:56:08,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50e2dd0-d8cd-4458-9bc5-5044e12d324b/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:56:08,703 INFO L731 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:56:08,710 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 10:56:08,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:56:08 BoogieIcfgContainer [2021-11-09 10:56:08,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 10:56:08,732 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:56:08,732 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:56:08,733 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:56:08,733 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:45:48" (3/4) ... [2021-11-09 10:56:08,741 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 10:56:08,741 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:56:08,743 INFO L168 Benchmark]: Toolchain (without parser) took 623247.22 ms. Allocated memory was 69.2 MB in the beginning and 119.5 MB in the end (delta: 50.3 MB). Free memory was 47.3 MB in the beginning and 37.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 60.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:56:08,743 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 69.2 MB. Free memory is still 49.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:56:08,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.59 ms. Allocated memory is still 69.2 MB. Free memory was 47.1 MB in the beginning and 34.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-09 10:56:08,744 INFO L168 Benchmark]: Boogie Preprocessor took 142.81 ms. Allocated memory is still 69.2 MB. Free memory was 34.9 MB in the beginning and 29.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 10:56:08,744 INFO L168 Benchmark]: RCFGBuilder took 2055.36 ms. Allocated memory was 69.2 MB in the beginning and 98.6 MB in the end (delta: 29.4 MB). Free memory was 29.9 MB in the beginning and 52.7 MB in the end (delta: -22.8 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-11-09 10:56:08,745 INFO L168 Benchmark]: TraceAbstraction took 620248.70 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 52.2 MB in the beginning and 37.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2021-11-09 10:56:08,745 INFO L168 Benchmark]: Witness Printer took 9.09 ms. Allocated memory is still 119.5 MB. Free memory is still 37.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:56:08,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 69.2 MB. Free memory is still 49.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 784.59 ms. Allocated memory is still 69.2 MB. Free memory was 47.1 MB in the beginning and 34.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 142.81 ms. Allocated memory is still 69.2 MB. Free memory was 34.9 MB in the beginning and 29.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2055.36 ms. Allocated memory was 69.2 MB in the beginning and 98.6 MB in the end (delta: 29.4 MB). Free memory was 29.9 MB in the beginning and 52.7 MB in the end (delta: -22.8 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 620248.70 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 52.2 MB in the beginning and 37.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. * Witness Printer took 9.09 ms. Allocated memory is still 119.5 MB. Free memory is still 37.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 768]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L799] CALL entry_point() [L785] int i; [L786] CALL, EXPR ldv_positive() [L519] int r = __VERIFIER_nondet_int(); [L520] COND TRUE r>0 [L520] return r; [L786] RET, EXPR ldv_positive() [L786] int len = ldv_positive(); [L787] COND FALSE !(!(len<16777216)) [L788] CALL, EXPR ldv_malloc(sizeof(struct A17*)*len) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L788] RET, EXPR ldv_malloc(sizeof(struct A17*)*len) [L788] struct A17 **array = (struct A17 **)ldv_malloc(sizeof(struct A17*)*len); [L789] COND TRUE \read(**array) [L790] i=0 [L790] COND TRUE i