./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0775aa74e42740d69127a88680deb3bae2149559 ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0775aa74e42740d69127a88680deb3bae2149559 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:53:37,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:53:37,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:53:37,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:53:37,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:53:37,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:53:37,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:53:37,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:53:37,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:53:37,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:53:37,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:53:37,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:53:37,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:53:37,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:53:37,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:53:37,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:53:37,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:53:37,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:53:37,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:53:37,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:53:37,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:53:37,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:53:37,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:53:37,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:53:37,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:53:37,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:53:37,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:53:37,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:53:37,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:53:37,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:53:37,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:53:37,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:53:37,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:53:37,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:53:37,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:53:37,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:53:37,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:53:37,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:53:37,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:53:37,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:53:37,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:53:37,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 17:53:37,739 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:53:37,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:53:37,740 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:53:37,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:53:37,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:53:37,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:53:37,741 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:53:37,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:53:37,742 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:53:37,742 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:53:37,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:53:37,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:53:37,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:53:37,743 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:53:37,743 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:53:37,744 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:53:37,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:53:37,748 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:53:37,749 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:53:37,749 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:53:37,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:53:37,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:53:37,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:53:37,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:53:37,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:53:37,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:53:37,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 17:53:37,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 17:53:37,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:53:37,751 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0775aa74e42740d69127a88680deb3bae2149559 [2021-08-30 17:53:37,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:53:38,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:53:38,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:53:38,025 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:53:38,026 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:53:38,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2021-08-30 17:53:38,081 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4bee311d/13cd7eede07b4fe786915decac6fbe13/FLAG6b8feb8f6 [2021-08-30 17:53:38,496 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:53:38,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2021-08-30 17:53:38,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4bee311d/13cd7eede07b4fe786915decac6fbe13/FLAG6b8feb8f6 [2021-08-30 17:53:38,869 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4bee311d/13cd7eede07b4fe786915decac6fbe13 [2021-08-30 17:53:38,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:53:38,876 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:53:38,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:53:38,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:53:38,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:53:38,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:53:38" (1/1) ... [2021-08-30 17:53:38,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@495027bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:53:38, skipping insertion in model container [2021-08-30 17:53:38,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:53:38" (1/1) ... [2021-08-30 17:53:38,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:53:38,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:53:39,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:53:39,188 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) [2021-08-30 17:53:39,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c00a76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:53:39, skipping insertion in model container [2021-08-30 17:53:39,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:53:39,189 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-30 17:53:39,191 INFO L158 Benchmark]: Toolchain (without parser) took 315.95ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 27.8MB in the beginning and 43.0MB in the end (delta: -15.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2021-08-30 17:53:39,191 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 39.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:53:39,192 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.73ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 27.6MB in the beginning and 43.0MB in the end (delta: -15.4MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2021-08-30 17:53:39,193 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 39.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.73ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 27.6MB in the beginning and 43.0MB in the end (delta: -15.4MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:53:40,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:53:40,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:53:40,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:53:40,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:53:40,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:53:40,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:53:40,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:53:40,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:53:40,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:53:40,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:53:40,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:53:40,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:53:40,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:53:40,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:53:40,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:53:40,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:53:40,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:53:40,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:53:40,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:53:40,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:53:40,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:53:40,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:53:40,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:53:40,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:53:40,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:53:40,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:53:40,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:53:40,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:53:40,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:53:40,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:53:40,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:53:40,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:53:40,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:53:40,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:53:40,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:53:40,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:53:40,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:53:40,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:53:40,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:53:40,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:53:40,595 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 17:53:40,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:53:40,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:53:40,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:53:40,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:53:40,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:53:40,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:53:40,625 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:53:40,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:53:40,626 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:53:40,626 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:53:40,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:53:40,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:53:40,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:53:40,627 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:53:40,627 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:53:40,627 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:53:40,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:53:40,627 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:53:40,628 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 17:53:40,628 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 17:53:40,628 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:53:40,628 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:53:40,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:53:40,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:53:40,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:53:40,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:53:40,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:53:40,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:53:40,629 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 17:53:40,629 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 17:53:40,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:53:40,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 17:53:40,630 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0775aa74e42740d69127a88680deb3bae2149559 [2021-08-30 17:53:40,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:53:40,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:53:40,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:53:40,932 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:53:40,933 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:53:40,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2021-08-30 17:53:40,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13c1213b1/7a269de9b49b45af87b28332a24b7290/FLAGdd711d86d [2021-08-30 17:53:41,458 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:53:41,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2021-08-30 17:53:41,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13c1213b1/7a269de9b49b45af87b28332a24b7290/FLAGdd711d86d [2021-08-30 17:53:41,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13c1213b1/7a269de9b49b45af87b28332a24b7290 [2021-08-30 17:53:41,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:53:41,489 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:53:41,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:53:41,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:53:41,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:53:41,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:53:41" (1/1) ... [2021-08-30 17:53:41,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f94fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:53:41, skipping insertion in model container [2021-08-30 17:53:41,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:53:41" (1/1) ... [2021-08-30 17:53:41,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:53:41,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:53:41,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:53:41,862 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-30 17:53:41,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:53:41,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:53:41,921 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:53:41,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:53:41,973 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:53:41,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:53:41 WrapperNode [2021-08-30 17:53:41,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:53:41,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:53:41,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:53:41,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:53:41,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:53:41" (1/1) ... [2021-08-30 17:53:41,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:53:41" (1/1) ... [2021-08-30 17:53:42,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:53:41" (1/1) ... [2021-08-30 17:53:42,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:53:41" (1/1) ... [2021-08-30 17:53:42,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:53:41" (1/1) ... [2021-08-30 17:53:42,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:53:41" (1/1) ... [2021-08-30 17:53:42,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:53:41" (1/1) ... [2021-08-30 17:53:42,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:53:42,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:53:42,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:53:42,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:53:42,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:53:41" (1/1) ... [2021-08-30 17:53:42,081 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:53:42,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:53:42,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 17:53:42,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 17:53:42,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:53:42,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:53:42,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-08-30 17:53:42,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:53:42,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:53:42,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:53:42,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:53:42,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:53:42,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:53:42,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-08-30 17:53:42,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-08-30 17:53:42,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-08-30 17:53:42,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-08-30 17:53:42,136 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-08-30 17:53:42,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-08-30 17:53:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-08-30 17:53:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-08-30 17:53:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-08-30 17:53:42,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-08-30 17:53:42,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-08-30 17:53:42,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-08-30 17:53:42,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-08-30 17:53:42,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-08-30 17:53:42,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-08-30 17:53:42,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-08-30 17:53:42,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-08-30 17:53:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-08-30 17:53:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-08-30 17:53:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-08-30 17:53:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-08-30 17:53:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-08-30 17:53:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-08-30 17:53:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-08-30 17:53:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-08-30 17:53:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-08-30 17:53:42,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-08-30 17:53:42,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-08-30 17:53:42,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-08-30 17:53:42,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-08-30 17:53:42,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-08-30 17:53:42,142 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-08-30 17:53:42,142 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-08-30 17:53:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-08-30 17:53:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:53:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-30 17:53:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-08-30 17:53:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-08-30 17:53:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:53:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:53:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:53:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:53:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:53:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:53:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:53:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:53:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:53:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:53:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:53:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:53:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:53:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:53:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:53:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:53:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:53:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:53:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:53:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:53:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:53:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:53:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:53:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:53:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:53:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:53:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:53:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:53:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:53:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:53:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:53:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:53:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:53:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:53:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:53:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:53:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:53:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:53:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:53:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:53:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:53:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:53:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:53:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:53:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:53:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:53:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:53:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:53:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:53:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:53:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:53:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:53:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:53:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:53:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:53:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:53:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:53:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:53:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:53:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:53:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:53:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:53:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:53:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:53:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:53:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:53:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:53:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:53:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:53:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:53:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:53:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:53:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:53:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:53:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:53:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:53:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:53:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:53:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:53:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:53:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:53:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:53:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:53:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:53:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:53:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:53:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:53:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:53:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:53:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:53:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-08-30 17:53:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:53:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-08-30 17:53:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-08-30 17:53:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-30 17:53:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-30 17:53:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-08-30 17:53:42,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:53:42,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-08-30 17:53:42,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-08-30 17:53:42,163 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-08-30 17:53:42,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:53:42,163 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-08-30 17:53:42,164 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-08-30 17:53:42,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-08-30 17:53:42,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:53:42,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-08-30 17:53:42,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-08-30 17:53:42,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-08-30 17:53:42,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-08-30 17:53:42,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-08-30 17:53:42,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-08-30 17:53:42,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:53:42,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-08-30 17:53:42,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-08-30 17:53:42,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-08-30 17:53:42,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-08-30 17:53:42,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-08-30 17:53:42,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-30 17:53:42,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-30 17:53:42,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-08-30 17:53:42,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-08-30 17:53:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-08-30 17:53:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-08-30 17:53:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-08-30 17:53:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-08-30 17:53:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-08-30 17:53:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-08-30 17:53:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-08-30 17:53:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-08-30 17:53:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-08-30 17:53:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-08-30 17:53:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-08-30 17:53:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-08-30 17:53:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-30 17:53:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-08-30 17:53:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-08-30 17:53:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-08-30 17:53:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:53:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:53:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:53:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-30 17:53:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:53:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:53:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-08-30 17:53:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-08-30 17:53:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-08-30 17:53:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-08-30 17:53:42,450 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:53:42,506 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:53:42,572 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:53:42,573 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-30 17:53:42,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:53:42 BoogieIcfgContainer [2021-08-30 17:53:42,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:53:42,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:53:42,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:53:42,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:53:42,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:53:41" (1/3) ... [2021-08-30 17:53:42,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243331b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:53:42, skipping insertion in model container [2021-08-30 17:53:42,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:53:41" (2/3) ... [2021-08-30 17:53:42,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243331b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:53:42, skipping insertion in model container [2021-08-30 17:53:42,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:53:42" (3/3) ... [2021-08-30 17:53:42,584 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test4-2.i [2021-08-30 17:53:42,587 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:53:42,588 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 77 error locations. [2021-08-30 17:53:42,613 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:53:42,617 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, mConcurrency=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 [2021-08-30 17:53:42,617 INFO L340 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2021-08-30 17:53:42,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 57 states have (on average 1.543859649122807) internal successors, (88), 81 states have internal predecessors, (88), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-08-30 17:53:42,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 17:53:42,631 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:53:42,631 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:53:42,632 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:53:42,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:53:42,635 INFO L82 PathProgramCache]: Analyzing trace with hash -2025190552, now seen corresponding path program 1 times [2021-08-30 17:53:42,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:53:42,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490992530] [2021-08-30 17:53:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:53:42,643 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:53:42,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:53:42,644 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:53:42,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-30 17:53:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:53:42,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:53:42,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:53:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:53:42,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:53:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:53:43,026 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:53:43,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490992530] [2021-08-30 17:53:43,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490992530] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:53:43,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:53:43,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 17:53:43,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833384964] [2021-08-30 17:53:43,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:53:43,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:53:43,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:53:43,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:53:43,058 INFO L87 Difference]: Start difference. First operand has 104 states, 57 states have (on average 1.543859649122807) internal successors, (88), 81 states have internal predecessors, (88), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:53:43,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:53:43,152 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2021-08-30 17:53:43,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:53:43,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 16 [2021-08-30 17:53:43,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:53:43,161 INFO L225 Difference]: With dead ends: 53 [2021-08-30 17:53:43,161 INFO L226 Difference]: Without dead ends: 50 [2021-08-30 17:53:43,163 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.07ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:53:43,181 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.67ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.10ms IncrementalHoareTripleChecker+Time [2021-08-30 17:53:43,181 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 47 Invalid, 106 Unknown, 0 Unchecked, 5.67ms Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 66.10ms Time] [2021-08-30 17:53:43,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-30 17:53:43,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2021-08-30 17:53:43,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 25 states have internal predecessors, (27), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 17:53:43,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-08-30 17:53:43,209 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 16 [2021-08-30 17:53:43,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:53:43,209 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-08-30 17:53:43,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:53:43,210 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-08-30 17:53:43,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 17:53:43,210 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:53:43,211 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:53:43,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-30 17:53:43,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:53:43,418 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:53:43,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:53:43,418 INFO L82 PathProgramCache]: Analyzing trace with hash -282380217, now seen corresponding path program 1 times [2021-08-30 17:53:43,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:53:43,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198461232] [2021-08-30 17:53:43,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:53:43,419 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:53:43,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:53:43,420 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:53:43,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-30 17:53:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:53:43,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 17:53:43,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:53:43,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:53:43,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:53:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:53:43,693 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:53:43,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198461232] [2021-08-30 17:53:43,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198461232] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:53:43,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:53:43,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 17:53:43,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120104289] [2021-08-30 17:53:43,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:53:43,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:53:43,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:53:43,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:53:43,695 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:53:43,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:53:43,767 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-08-30 17:53:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:53:43,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 16 [2021-08-30 17:53:43,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:53:43,768 INFO L225 Difference]: With dead ends: 46 [2021-08-30 17:53:43,768 INFO L226 Difference]: Without dead ends: 43 [2021-08-30 17:53:43,769 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:53:43,772 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.74ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.81ms IncrementalHoareTripleChecker+Time [2021-08-30 17:53:43,773 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 13 Invalid, 66 Unknown, 0 Unchecked, 1.74ms Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 60.81ms Time] [2021-08-30 17:53:43,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-08-30 17:53:43,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2021-08-30 17:53:43,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 16 states have (on average 1.4375) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-30 17:53:43,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-08-30 17:53:43,784 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 16 [2021-08-30 17:53:43,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:53:43,785 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-08-30 17:53:43,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:53:43,785 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-08-30 17:53:43,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 17:53:43,786 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:53:43,786 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:53:43,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-30 17:53:44,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:53:44,003 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:53:44,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:53:44,004 INFO L82 PathProgramCache]: Analyzing trace with hash -2034469669, now seen corresponding path program 1 times [2021-08-30 17:53:44,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:53:44,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426176562] [2021-08-30 17:53:44,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:53:44,005 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:53:44,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:53:44,007 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:53:44,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-30 17:53:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:53:44,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:53:44,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:53:44,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-30 17:53:44,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:53:44,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-30 17:53:44,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:53:44,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426176562] [2021-08-30 17:53:44,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426176562] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:53:44,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:53:44,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-30 17:53:44,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563405605] [2021-08-30 17:53:44,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:53:44,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:53:44,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:53:44,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:53:44,220 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-08-30 17:53:44,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:53:44,262 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-08-30 17:53:44,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:53:44,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 20 [2021-08-30 17:53:44,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:53:44,263 INFO L225 Difference]: With dead ends: 30 [2021-08-30 17:53:44,263 INFO L226 Difference]: Without dead ends: 30 [2021-08-30 17:53:44,263 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.48ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:53:44,265 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.22ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.91ms IncrementalHoareTripleChecker+Time [2021-08-30 17:53:44,269 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 35 Invalid, 73 Unknown, 0 Unchecked, 1.22ms Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 33.91ms Time] [2021-08-30 17:53:44,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-30 17:53:44,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-30 17:53:44,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 16 states have (on average 1.375) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-30 17:53:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-08-30 17:53:44,276 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 20 [2021-08-30 17:53:44,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:53:44,276 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-08-30 17:53:44,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-08-30 17:53:44,276 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-08-30 17:53:44,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 17:53:44,277 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:53:44,277 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:53:44,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-30 17:53:44,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:53:44,486 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:53:44,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:53:44,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1355950095, now seen corresponding path program 1 times [2021-08-30 17:53:44,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:53:44,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548856077] [2021-08-30 17:53:44,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:53:44,487 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:53:44,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:53:44,488 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:53:44,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-30 17:53:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:53:44,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 17:53:44,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:53:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:53:44,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:53:44,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-30 17:53:44,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:53:44,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548856077] [2021-08-30 17:53:44,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548856077] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:53:44,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:53:44,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-08-30 17:53:44,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706170265] [2021-08-30 17:53:44,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 17:53:44,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:53:44,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 17:53:44,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:53:44,927 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-30 17:53:44,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:53:44,982 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2021-08-30 17:53:44,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:53:44,983 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), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 21 [2021-08-30 17:53:44,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:53:44,984 INFO L225 Difference]: With dead ends: 47 [2021-08-30 17:53:44,984 INFO L226 Difference]: Without dead ends: 47 [2021-08-30 17:53:44,984 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 67.42ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:53:44,984 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.86ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 49.06ms IncrementalHoareTripleChecker+Time [2021-08-30 17:53:44,985 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 20 Invalid, 135 Unknown, 0 Unchecked, 0.86ms Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 71 Unchecked, 49.06ms Time] [2021-08-30 17:53:44,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-08-30 17:53:44,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2021-08-30 17:53:44,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-08-30 17:53:44,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-08-30 17:53:44,988 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 21 [2021-08-30 17:53:44,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:53:44,988 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-08-30 17:53:44,988 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), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-30 17:53:44,988 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-08-30 17:53:44,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 17:53:44,988 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:53:44,988 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:53:45,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-08-30 17:53:45,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:53:45,189 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:53:45,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:53:45,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1091176239, now seen corresponding path program 1 times [2021-08-30 17:53:45,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:53:45,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540763061] [2021-08-30 17:53:45,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:53:45,190 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:53:45,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:53:45,191 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:53:45,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-30 17:53:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:53:45,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 17:53:45,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:53:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:53:45,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:53:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-30 17:53:45,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:53:45,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540763061] [2021-08-30 17:53:45,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540763061] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-30 17:53:45,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 17:53:45,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-08-30 17:53:45,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310883524] [2021-08-30 17:53:45,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:53:45,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:53:45,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:53:45,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:53:45,424 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:53:45,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:53:45,481 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-08-30 17:53:45,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:53:45,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2021-08-30 17:53:45,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:53:45,482 INFO L225 Difference]: With dead ends: 37 [2021-08-30 17:53:45,482 INFO L226 Difference]: Without dead ends: 33 [2021-08-30 17:53:45,483 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.52ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:53:45,483 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.77ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.87ms IncrementalHoareTripleChecker+Time [2021-08-30 17:53:45,483 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 89 Unknown, 0 Unchecked, 0.77ms Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 53.87ms Time] [2021-08-30 17:53:45,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-08-30 17:53:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-08-30 17:53:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.263157894736842) internal successors, (24), 23 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-30 17:53:45,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-08-30 17:53:45,486 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 21 [2021-08-30 17:53:45,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:53:45,486 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-08-30 17:53:45,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:53:45,486 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-08-30 17:53:45,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 17:53:45,486 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:53:45,486 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:53:45,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-30 17:53:45,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:53:45,689 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:53:45,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:53:45,689 INFO L82 PathProgramCache]: Analyzing trace with hash -915219619, now seen corresponding path program 1 times [2021-08-30 17:53:45,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:53:45,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113072945] [2021-08-30 17:53:45,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:53:45,690 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:53:45,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:53:45,691 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:53:45,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-30 17:53:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:53:45,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:53:45,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:53:45,827 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 [2021-08-30 17:53:45,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-30 17:53:45,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:53:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-30 17:53:45,895 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:53:45,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113072945] [2021-08-30 17:53:45,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113072945] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:53:45,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:53:45,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-30 17:53:45,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621992308] [2021-08-30 17:53:45,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:53:45,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:53:45,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:53:45,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:53:45,896 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-08-30 17:53:45,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:53:45,952 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-08-30 17:53:45,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:53:45,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 22 [2021-08-30 17:53:45,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:53:45,953 INFO L225 Difference]: With dead ends: 37 [2021-08-30 17:53:45,953 INFO L226 Difference]: Without dead ends: 37 [2021-08-30 17:53:45,953 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.90ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:53:45,954 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.82ms IncrementalHoareTripleChecker+Time [2021-08-30 17:53:45,954 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 101 Unknown, 0 Unchecked, 0.66ms Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 51.82ms Time] [2021-08-30 17:53:45,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-30 17:53:45,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-30 17:53:45,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 26 states have internal predecessors, (28), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-30 17:53:45,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-08-30 17:53:45,956 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 22 [2021-08-30 17:53:45,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:53:45,956 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-08-30 17:53:45,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-08-30 17:53:45,957 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-08-30 17:53:45,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 17:53:45,957 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:53:45,957 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] [2021-08-30 17:53:45,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-30 17:53:46,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:53:46,166 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:53:46,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:53:46,166 INFO L82 PathProgramCache]: Analyzing trace with hash -27715938, now seen corresponding path program 1 times [2021-08-30 17:53:46,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:53:46,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179542470] [2021-08-30 17:53:46,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:53:46,166 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:53:46,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:53:46,167 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:53:46,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-30 17:53:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:53:46,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:53:46,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:53:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-30 17:53:46,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:53:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-30 17:53:46,348 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:53:46,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179542470] [2021-08-30 17:53:46,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179542470] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:53:46,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:53:46,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-30 17:53:46,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113931796] [2021-08-30 17:53:46,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:53:46,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:53:46,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:53:46,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:53:46,350 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-08-30 17:53:46,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:53:46,396 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-08-30 17:53:46,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:53:46,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 22 [2021-08-30 17:53:46,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:53:46,397 INFO L225 Difference]: With dead ends: 44 [2021-08-30 17:53:46,397 INFO L226 Difference]: Without dead ends: 44 [2021-08-30 17:53:46,397 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.13ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:53:46,398 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.96ms IncrementalHoareTripleChecker+Time [2021-08-30 17:53:46,398 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 36 Invalid, 82 Unknown, 0 Unchecked, 0.59ms Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 42.96ms Time] [2021-08-30 17:53:46,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-08-30 17:53:46,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2021-08-30 17:53:46,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-30 17:53:46,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-08-30 17:53:46,401 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 22 [2021-08-30 17:53:46,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:53:46,401 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-08-30 17:53:46,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-08-30 17:53:46,401 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-08-30 17:53:46,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 17:53:46,402 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:53:46,402 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] [2021-08-30 17:53:46,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-30 17:53:46,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:53:46,608 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:53:46,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:53:46,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1692963281, now seen corresponding path program 1 times [2021-08-30 17:53:46,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:53:46,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094174495] [2021-08-30 17:53:46,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:53:46,609 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:53:46,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:53:46,610 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:53:46,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-30 17:53:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:53:46,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:53:46,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:53:46,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-30 17:53:46,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:53:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-30 17:53:46,779 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:53:46,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094174495] [2021-08-30 17:53:46,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094174495] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:53:46,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:53:46,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-30 17:53:46,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221876367] [2021-08-30 17:53:46,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:53:46,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:53:46,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:53:46,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:53:46,781 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:53:46,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:53:46,813 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-08-30 17:53:46,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:53:46,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-08-30 17:53:46,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:53:46,814 INFO L225 Difference]: With dead ends: 31 [2021-08-30 17:53:46,814 INFO L226 Difference]: Without dead ends: 31 [2021-08-30 17:53:46,814 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.82ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:53:46,815 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.43ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.83ms IncrementalHoareTripleChecker+Time [2021-08-30 17:53:46,815 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 62 Unknown, 0 Unchecked, 0.43ms Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 29.83ms Time] [2021-08-30 17:53:46,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-30 17:53:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-08-30 17:53:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-30 17:53:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-08-30 17:53:46,817 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 23 [2021-08-30 17:53:46,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:53:46,817 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-08-30 17:53:46,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:53:46,818 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-08-30 17:53:46,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 17:53:46,818 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:53:46,818 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] [2021-08-30 17:53:46,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-08-30 17:53:47,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:53:47,027 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:53:47,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:53:47,027 INFO L82 PathProgramCache]: Analyzing trace with hash 942254559, now seen corresponding path program 1 times [2021-08-30 17:53:47,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:53:47,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297623980] [2021-08-30 17:53:47,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:53:47,028 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:53:47,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:53:47,028 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:53:47,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-30 17:53:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:53:47,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 17:53:47,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:53:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:53:47,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:53:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-30 17:53:47,354 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:53:47,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297623980] [2021-08-30 17:53:47,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297623980] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:53:47,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:53:47,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2021-08-30 17:53:47,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545567333] [2021-08-30 17:53:47,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 17:53:47,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:53:47,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 17:53:47,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:53:47,355 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 17:53:47,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:53:47,429 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-08-30 17:53:47,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 17:53:47,430 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2021-08-30 17:53:47,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:53:47,430 INFO L225 Difference]: With dead ends: 30 [2021-08-30 17:53:47,430 INFO L226 Difference]: Without dead ends: 30 [2021-08-30 17:53:47,430 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 64.41ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:53:47,431 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.71ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 70.20ms IncrementalHoareTripleChecker+Time [2021-08-30 17:53:47,431 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 14 Invalid, 124 Unknown, 0 Unchecked, 0.71ms Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 15 Unchecked, 70.20ms Time] [2021-08-30 17:53:47,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-30 17:53:47,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-30 17:53:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-30 17:53:47,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-08-30 17:53:47,433 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 24 [2021-08-30 17:53:47,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:53:47,433 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-08-30 17:53:47,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 17:53:47,433 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-08-30 17:53:47,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-30 17:53:47,433 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:53:47,433 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] [2021-08-30 17:53:47,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-30 17:53:47,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:53:47,634 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting entry_pointErr5ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:53:47,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:53:47,634 INFO L82 PathProgramCache]: Analyzing trace with hash -854879341, now seen corresponding path program 1 times [2021-08-30 17:53:47,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:53:47,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162372152] [2021-08-30 17:53:47,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:53:47,635 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:53:47,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:53:47,635 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:53:47,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-30 17:53:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:53:47,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 17:53:47,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:53:47,731 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 [2021-08-30 17:53:47,811 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-30 17:53:47,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2021-08-30 17:53:47,908 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-08-30 17:53:47,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2021-08-30 17:53:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:53:47,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:53:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:53:54,220 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:53:54,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162372152] [2021-08-30 17:53:54,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162372152] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-30 17:53:54,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 17:53:54,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 13 [2021-08-30 17:53:54,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723513496] [2021-08-30 17:53:54,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 17:53:54,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:53:54,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 17:53:54,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=142, Unknown=3, NotChecked=0, Total=182 [2021-08-30 17:53:54,221 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:53:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:53:54,277 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-08-30 17:53:54,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:53:54,277 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-08-30 17:53:54,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:53:54,278 INFO L225 Difference]: With dead ends: 37 [2021-08-30 17:53:54,278 INFO L226 Difference]: Without dead ends: 37 [2021-08-30 17:53:54,278 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 6153.23ms TimeCoverageRelationStatistics Valid=37, Invalid=142, Unknown=3, NotChecked=0, Total=182 [2021-08-30 17:53:54,278 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.73ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 51.72ms IncrementalHoareTripleChecker+Time [2021-08-30 17:53:54,278 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 129 Unknown, 0 Unchecked, 0.73ms Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 36 Unchecked, 51.72ms Time] [2021-08-30 17:53:54,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-30 17:53:54,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-30 17:53:54,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-30 17:53:54,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-08-30 17:53:54,280 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 25 [2021-08-30 17:53:54,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:53:54,280 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-08-30 17:53:54,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:53:54,281 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-08-30 17:53:54,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-30 17:53:54,281 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:53:54,281 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] [2021-08-30 17:53:54,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-30 17:53:54,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:53:54,485 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting entry_pointErr5ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:53:54,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:53:54,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1051392846, now seen corresponding path program 1 times [2021-08-30 17:53:54,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:53:54,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846417366] [2021-08-30 17:53:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:53:54,485 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:53:54,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:53:54,486 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:53:54,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-30 17:53:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:53:54,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 17:53:54,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:53:54,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:53:54,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-08-30 17:53:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:53:54,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:53:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:53:54,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:53:54,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846417366] [2021-08-30 17:53:54,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846417366] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:53:54,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:53:54,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-08-30 17:53:54,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217119214] [2021-08-30 17:53:54,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 17:53:54,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:53:54,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 17:53:54,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-08-30 17:53:54,955 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:53:55,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:53:55,069 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-08-30 17:53:55,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:53:55,070 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2021-08-30 17:53:55,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:53:55,070 INFO L225 Difference]: With dead ends: 36 [2021-08-30 17:53:55,070 INFO L226 Difference]: Without dead ends: 36 [2021-08-30 17:53:55,070 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 134.40ms TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-08-30 17:53:55,071 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.20ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 90.85ms IncrementalHoareTripleChecker+Time [2021-08-30 17:53:55,071 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 47 Invalid, 198 Unknown, 0 Unchecked, 1.20ms Time], IncrementalHoareTripleChecker [6 Valid, 162 Invalid, 0 Unknown, 30 Unchecked, 90.85ms Time] [2021-08-30 17:53:55,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-30 17:53:55,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2021-08-30 17:53:55,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-30 17:53:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-08-30 17:53:55,073 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 25 [2021-08-30 17:53:55,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:53:55,073 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-08-30 17:53:55,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:53:55,073 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-08-30 17:53:55,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 17:53:55,073 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:53:55,074 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] [2021-08-30 17:53:55,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-08-30 17:53:55,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:53:55,274 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:53:55,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:53:55,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1446021946, now seen corresponding path program 1 times [2021-08-30 17:53:55,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:53:55,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952671301] [2021-08-30 17:53:55,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:53:55,275 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:53:55,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:53:55,276 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:53:55,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-30 17:53:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:53:55,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-30 17:53:55,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:53:59,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-30 17:53:59,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:53:59,999 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:00,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952671301] [2021-08-30 17:54:00,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:54:00,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [7542173] [2021-08-30 17:54:00,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:00,000 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-30 17:54:00,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-30 17:54:00,020 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-30 17:54:00,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-08-30 17:54:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:00,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-30 17:54:00,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:00,191 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-30 17:54:00,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 28 [2021-08-30 17:54:10,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-30 17:54:10,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:15,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:54:15,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773004032] [2021-08-30 17:54:15,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:15,182 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:54:15,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:54:15,188 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:54:15,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-30 17:54:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:15,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-30 17:54:15,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:17,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-30 17:54:17,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:23,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:54:23,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:23,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-30 17:54:23,759 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-30 17:54:23,759 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-08-30 17:54:23,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (76 of 77 remaining) [2021-08-30 17:54:23,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION (75 of 77 remaining) [2021-08-30 17:54:23,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION (74 of 77 remaining) [2021-08-30 17:54:23,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION (73 of 77 remaining) [2021-08-30 17:54:23,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION (72 of 77 remaining) [2021-08-30 17:54:23,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION (71 of 77 remaining) [2021-08-30 17:54:23,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION (70 of 77 remaining) [2021-08-30 17:54:23,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION (69 of 77 remaining) [2021-08-30 17:54:23,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION (68 of 77 remaining) [2021-08-30 17:54:23,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (67 of 77 remaining) [2021-08-30 17:54:23,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION (66 of 77 remaining) [2021-08-30 17:54:23,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION (65 of 77 remaining) [2021-08-30 17:54:23,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION (64 of 77 remaining) [2021-08-30 17:54:23,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION (63 of 77 remaining) [2021-08-30 17:54:23,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION (62 of 77 remaining) [2021-08-30 17:54:23,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION (61 of 77 remaining) [2021-08-30 17:54:23,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION (60 of 77 remaining) [2021-08-30 17:54:23,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION (59 of 77 remaining) [2021-08-30 17:54:23,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION (58 of 77 remaining) [2021-08-30 17:54:23,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION (57 of 77 remaining) [2021-08-30 17:54:23,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION (56 of 77 remaining) [2021-08-30 17:54:23,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION (55 of 77 remaining) [2021-08-30 17:54:23,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION (54 of 77 remaining) [2021-08-30 17:54:23,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION (53 of 77 remaining) [2021-08-30 17:54:23,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION (52 of 77 remaining) [2021-08-30 17:54:23,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION (51 of 77 remaining) [2021-08-30 17:54:23,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION (50 of 77 remaining) [2021-08-30 17:54:23,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION (49 of 77 remaining) [2021-08-30 17:54:23,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION (48 of 77 remaining) [2021-08-30 17:54:23,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION (47 of 77 remaining) [2021-08-30 17:54:23,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION (46 of 77 remaining) [2021-08-30 17:54:23,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION (45 of 77 remaining) [2021-08-30 17:54:23,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION (44 of 77 remaining) [2021-08-30 17:54:23,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION (43 of 77 remaining) [2021-08-30 17:54:23,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION (42 of 77 remaining) [2021-08-30 17:54:23,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION (41 of 77 remaining) [2021-08-30 17:54:23,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION (40 of 77 remaining) [2021-08-30 17:54:23,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION (39 of 77 remaining) [2021-08-30 17:54:23,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION (38 of 77 remaining) [2021-08-30 17:54:23,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION (37 of 77 remaining) [2021-08-30 17:54:23,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION (36 of 77 remaining) [2021-08-30 17:54:23,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION (35 of 77 remaining) [2021-08-30 17:54:23,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION (34 of 77 remaining) [2021-08-30 17:54:23,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (33 of 77 remaining) [2021-08-30 17:54:23,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE (32 of 77 remaining) [2021-08-30 17:54:23,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE (31 of 77 remaining) [2021-08-30 17:54:23,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE (30 of 77 remaining) [2021-08-30 17:54:23,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE (29 of 77 remaining) [2021-08-30 17:54:23,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE (28 of 77 remaining) [2021-08-30 17:54:23,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION (27 of 77 remaining) [2021-08-30 17:54:23,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION (26 of 77 remaining) [2021-08-30 17:54:23,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION (25 of 77 remaining) [2021-08-30 17:54:23,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION (24 of 77 remaining) [2021-08-30 17:54:23,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION (23 of 77 remaining) [2021-08-30 17:54:23,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION (22 of 77 remaining) [2021-08-30 17:54:23,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION (21 of 77 remaining) [2021-08-30 17:54:23,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION (20 of 77 remaining) [2021-08-30 17:54:23,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE (19 of 77 remaining) [2021-08-30 17:54:23,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE (18 of 77 remaining) [2021-08-30 17:54:23,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE (17 of 77 remaining) [2021-08-30 17:54:23,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE (16 of 77 remaining) [2021-08-30 17:54:23,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE (15 of 77 remaining) [2021-08-30 17:54:23,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE (14 of 77 remaining) [2021-08-30 17:54:23,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION (13 of 77 remaining) [2021-08-30 17:54:23,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION (12 of 77 remaining) [2021-08-30 17:54:23,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION (11 of 77 remaining) [2021-08-30 17:54:23,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION (10 of 77 remaining) [2021-08-30 17:54:23,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION (9 of 77 remaining) [2021-08-30 17:54:23,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION (8 of 77 remaining) [2021-08-30 17:54:23,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION (7 of 77 remaining) [2021-08-30 17:54:23,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION (6 of 77 remaining) [2021-08-30 17:54:23,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0ASSERT_VIOLATIONMEMORY_FREE (5 of 77 remaining) [2021-08-30 17:54:23,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1ASSERT_VIOLATIONMEMORY_FREE (4 of 77 remaining) [2021-08-30 17:54:23,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE (3 of 77 remaining) [2021-08-30 17:54:23,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE (2 of 77 remaining) [2021-08-30 17:54:23,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE (1 of 77 remaining) [2021-08-30 17:54:23,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr5ASSERT_VIOLATIONMEMORY_FREE (0 of 77 remaining) [2021-08-30 17:54:23,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-08-30 17:54:24,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-08-30 17:54:24,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-08-30 17:54:24,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:54:24,379 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:54:24,381 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-30 17:54:24,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:54:24 BoogieIcfgContainer [2021-08-30 17:54:24,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:54:24,386 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:54:24,386 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:54:24,386 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:54:24,386 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:53:42" (3/4) ... [2021-08-30 17:54:24,388 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:54:24,388 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:54:24,388 INFO L158 Benchmark]: Toolchain (without parser) took 42899.92ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 37.9MB in the beginning and 54.0MB in the end (delta: -16.1MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2021-08-30 17:54:24,388 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 60.8MB. Free memory was 42.8MB in the beginning and 42.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:54:24,389 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.82ms. Allocated memory is still 60.8MB. Free memory was 37.7MB in the beginning and 26.4MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 17:54:24,389 INFO L158 Benchmark]: Boogie Preprocessor took 92.22ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 26.2MB in the beginning and 56.1MB in the end (delta: -29.8MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2021-08-30 17:54:24,389 INFO L158 Benchmark]: RCFGBuilder took 510.59ms. Allocated memory is still 77.6MB. Free memory was 55.8MB in the beginning and 40.8MB in the end (delta: 14.9MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2021-08-30 17:54:24,389 INFO L158 Benchmark]: TraceAbstraction took 41807.42ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 40.3MB in the beginning and 54.0MB in the end (delta: -13.7MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2021-08-30 17:54:24,389 INFO L158 Benchmark]: Witness Printer took 2.23ms. Allocated memory is still 94.4MB. Free memory is still 54.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:54:24,390 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 60.8MB. Free memory was 42.8MB in the beginning and 42.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 482.82ms. Allocated memory is still 60.8MB. Free memory was 37.7MB in the beginning and 26.4MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 92.22ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 26.2MB in the beginning and 56.1MB in the end (delta: -29.8MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * RCFGBuilder took 510.59ms. Allocated memory is still 77.6MB. Free memory was 55.8MB in the beginning and 40.8MB in the end (delta: 14.9MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. * TraceAbstraction took 41807.42ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 40.3MB in the beginning and 54.0MB in the end (delta: -13.7MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. * Witness Printer took 2.23ms. Allocated memory is still 94.4MB. Free memory is still 54.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 765]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, overapproximation of memtrack at line 765. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L766] CALL entry_point() [L758] CALL, EXPR ldv_malloc(sizeof(int)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L758] RET, EXPR ldv_malloc(sizeof(int)) [L758] int *p = (int *)ldv_malloc(sizeof(int)); [L759] COND TRUE \read(*p) [L760] CALL, EXPR ldv_malloc(sizeof(int)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L760] RET, EXPR ldv_malloc(sizeof(int)) [L760] int *q = (int *)ldv_malloc(sizeof(int)); [L761] free(q) [L761] free(q) [L761] free(q) [L762] free(p) [L762] free(p) [L762] free(p) [L766] RET entry_point() - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 47 procedures, 344 locations, 77 error locations. Started 1 CEGAR loops. OverallTime: 41765.99ms, OverallIterations: 12, TraceHistogramMax: 2, EmptinessCheckTime: 12.97ms, AutomataDifference: 799.17ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 6.27ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 114 SdHoareTripleChecker+Valid, 601.13ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 107 mSDsluCounter, 343 SdHoareTripleChecker+Invalid, 472.77ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 152 IncrementalHoareTripleChecker+Unchecked, 723 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 991 IncrementalHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 106 mSDtfsCounter, 991 mSolverCounterSat, 14.58ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 462 GetRequests, 392 SyntacticMatches, 9 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 6478.99ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=0, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 44.38ms AutomataMinimizationTime, 11 MinimizatonAttempts, 49 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 78.02ms SsaConstructionTime, 179.50ms SatisfiabilityAnalysisTime, 8328.28ms InterpolantComputationTime, 235 NumberOfCodeBlocks, 235 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 448 ConstructedInterpolants, 31 QuantifiedInterpolants, 2015 SizeOfPredicates, 3 NumberOfNonLiveVariables, 872 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 22 InterpolantComputations, 14 PerfectInterpolantSequences, 56/72 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-30 17:54:24,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...