./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.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_test20-2.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 b6943849e6f46346ed71c5d8e09de50318fefe6a ................................................................................................................................... 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_test20-2.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 b6943849e6f46346ed71c5d8e09de50318fefe6a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 17:50:18,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:50:18,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:50:18,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:50:18,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:50:18,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:50:18,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:50:18,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:50:18,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:50:18,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:50:18,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:50:18,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:50:18,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:50:18,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:50:18,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:50:18,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:50:18,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:50:18,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:50:18,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:50:18,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:50:18,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:50:18,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:50:18,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:50:18,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:50:18,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:50:18,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:50:18,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:50:18,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:50:18,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:50:18,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:50:18,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:50:18,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:50:18,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:50:18,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:50:18,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:50:18,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:50:18,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:50:18,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:50:18,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:50:18,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:50:18,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:50:18,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 17:50:18,653 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:50:18,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:50:18,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:50:18,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:50:18,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:50:18,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:50:18,656 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:50:18,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:50:18,657 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:50:18,657 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:50:18,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:50:18,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:50:18,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:50:18,658 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:50:18,658 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:50:18,658 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:50:18,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:50:18,658 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:50:18,658 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:50:18,658 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:50:18,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:50:18,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:50:18,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:50:18,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:50:18,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:50:18,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:50:18,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 17:50:18,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 17:50:18,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:50:18,659 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6943849e6f46346ed71c5d8e09de50318fefe6a [2021-08-30 17:50:18,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:50:18,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:50:18,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:50:18,955 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:50:18,956 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:50:18,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2021-08-30 17:50:19,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcd14d606/57bba8882ba84c7e9d3006805cec64e9/FLAG1741c3051 [2021-08-30 17:50:19,410 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:50:19,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2021-08-30 17:50:19,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcd14d606/57bba8882ba84c7e9d3006805cec64e9/FLAG1741c3051 [2021-08-30 17:50:19,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcd14d606/57bba8882ba84c7e9d3006805cec64e9 [2021-08-30 17:50:19,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:50:19,779 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:50:19,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:50:19,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:50:19,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:50:19,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:50:19" (1/1) ... [2021-08-30 17:50:19,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18001716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:50:19, skipping insertion in model container [2021-08-30 17:50:19,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:50:19" (1/1) ... [2021-08-30 17:50:19,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:50:19,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:50:20,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:50:20,148 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 17:50:20,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@91e7316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:50:20, skipping insertion in model container [2021-08-30 17:50:20,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:50:20,150 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-30 17:50:20,152 INFO L158 Benchmark]: Toolchain (without parser) took 371.26ms. Allocated memory is still 60.8MB. Free memory was 45.4MB in the beginning and 40.6MB in the end (delta: 4.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-30 17:50:20,152 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 48.2MB. Free memory was 30.2MB in the beginning and 30.1MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:50:20,153 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.83ms. Allocated memory is still 60.8MB. Free memory was 45.2MB in the beginning and 40.8MB in the end (delta: 4.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-30 17:50:20,154 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 48.2MB. Free memory was 30.2MB in the beginning and 30.1MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 368.83ms. Allocated memory is still 60.8MB. Free memory was 45.2MB in the beginning and 40.8MB in the end (delta: 4.4MB). Peak memory consumption was 10.5MB. 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 17:50:21,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:50:21,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:50:21,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:50:21,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:50:21,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:50:21,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:50:21,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:50:21,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:50:21,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:50:21,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:50:21,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:50:21,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:50:21,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:50:21,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:50:21,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:50:21,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:50:21,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:50:21,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:50:21,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:50:21,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:50:21,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:50:21,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:50:21,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:50:21,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:50:21,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:50:21,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:50:21,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:50:21,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:50:21,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:50:21,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:50:21,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:50:21,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:50:21,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:50:21,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:50:21,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:50:21,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:50:21,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:50:21,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:50:21,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:50:21,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:50:21,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 17:50:21,571 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:50:21,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:50:21,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:50:21,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:50:21,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:50:21,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:50:21,574 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:50:21,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:50:21,574 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:50:21,574 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:50:21,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:50:21,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:50:21,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:50:21,575 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:50:21,575 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:50:21,575 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:50:21,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:50:21,585 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:50:21,585 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 17:50:21,585 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 17:50:21,585 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:50:21,585 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:50:21,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:50:21,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:50:21,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:50:21,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:50:21,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:50:21,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:50:21,586 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 17:50:21,586 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 17:50:21,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:50:21,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 17:50:21,587 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6943849e6f46346ed71c5d8e09de50318fefe6a [2021-08-30 17:50:21,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:50:21,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:50:21,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:50:21,849 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:50:21,849 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:50:21,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2021-08-30 17:50:21,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3757361df/71ab5210f69645fda61bf3d2d67caad7/FLAGe08a6105f [2021-08-30 17:50:22,317 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:50:22,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2021-08-30 17:50:22,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3757361df/71ab5210f69645fda61bf3d2d67caad7/FLAGe08a6105f [2021-08-30 17:50:22,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3757361df/71ab5210f69645fda61bf3d2d67caad7 [2021-08-30 17:50:22,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:50:22,344 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:50:22,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:50:22,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:50:22,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:50:22,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:50:22" (1/1) ... [2021-08-30 17:50:22,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211306d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:50:22, skipping insertion in model container [2021-08-30 17:50:22,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:50:22" (1/1) ... [2021-08-30 17:50:22,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:50:22,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:50:22,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:50:22,629 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-30 17:50:22,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:50:22,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:50:22,665 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:50:22,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:50:22,726 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:50:22,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:50:22 WrapperNode [2021-08-30 17:50:22,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:50:22,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:50:22,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:50:22,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:50:22,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:50:22" (1/1) ... [2021-08-30 17:50:22,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:50:22" (1/1) ... [2021-08-30 17:50:22,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:50:22" (1/1) ... [2021-08-30 17:50:22,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:50:22" (1/1) ... [2021-08-30 17:50:22,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:50:22" (1/1) ... [2021-08-30 17:50:22,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:50:22" (1/1) ... [2021-08-30 17:50:22,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:50:22" (1/1) ... [2021-08-30 17:50:22,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:50:22,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:50:22,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:50:22,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:50:22,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:50:22" (1/1) ... [2021-08-30 17:50:22,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:50:22,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:50:22,846 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 17:50:22,852 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 17:50:22,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:50:22,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:50:22,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-08-30 17:50:22,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:50:22,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:50:22,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:50:22,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:50:22,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:50:22,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:50:22,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-08-30 17:50:22,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-08-30 17:50:22,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-08-30 17:50:22,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-08-30 17:50:22,875 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-08-30 17:50:22,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-08-30 17:50:22,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-08-30 17:50:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-08-30 17:50:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-08-30 17:50:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-08-30 17:50:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-08-30 17:50:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-08-30 17:50:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-08-30 17:50:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-08-30 17:50:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-08-30 17:50:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-08-30 17:50:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-08-30 17:50:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-08-30 17:50:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-08-30 17:50:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-08-30 17:50:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-08-30 17:50:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-08-30 17:50:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-08-30 17:50:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-08-30 17:50:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-08-30 17:50:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-08-30 17:50:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-08-30 17:50:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-08-30 17:50:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-08-30 17:50:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-08-30 17:50:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-08-30 17:50:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-08-30 17:50:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-08-30 17:50:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_device [2021-08-30 17:50:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_device [2021-08-30 17:50:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_deregister_device [2021-08-30 17:50:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_20 [2021-08-30 17:50:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure free_20 [2021-08-30 17:50:22,880 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-08-30 17:50:22,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:50:22,880 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-30 17:50:22,880 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-08-30 17:50:22,880 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-08-30 17:50:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:50:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:50:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:50:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:50:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:50:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:50:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:50:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:50:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:50:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:50:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:50:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:50:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:50:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:50:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:50:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:50:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:50:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:50:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:50:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:50:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:50:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:50:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:50:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:50:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:50:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:50:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:50:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:50:22,886 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:50:22,886 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:50:22,886 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:50:22,886 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:50:22,886 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:50:22,886 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:50:22,886 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:50:22,886 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:50:22,886 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:50:22,886 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:50:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:50:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:50:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:50:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:50:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:50:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:50:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:50:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:50:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:50:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:50:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:50:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:50:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:50:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:50:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:50:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:50:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:50:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:50:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:50:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:50:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:50:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:50:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:50:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:50:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:50:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:50:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:50:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:50:22,890 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:50:22,890 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:50:22,890 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:50:22,890 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:50:22,890 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:50:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:50:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:50:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:50:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:50:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:50:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:50:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:50:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:50:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:50:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:50:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:50:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:50:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:50:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:50:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:50:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:50:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:50:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:50:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:50:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:50:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-08-30 17:50:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-08-30 17:50:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_device [2021-08-30 17:50:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_device [2021-08-30 17:50:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_deregister_device [2021-08-30 17:50:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_20 [2021-08-30 17:50:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure free_20 [2021-08-30 17:50:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-08-30 17:50:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:50:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:50:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:50:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-30 17:50:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:50:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:50:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-08-30 17:50:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-08-30 17:50:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-08-30 17:50:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-08-30 17:50:23,285 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:50:23,325 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:50:23,366 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:50:23,366 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-30 17:50:23,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:50:23 BoogieIcfgContainer [2021-08-30 17:50:23,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:50:23,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:50:23,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:50:23,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:50:23,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:50:22" (1/3) ... [2021-08-30 17:50:23,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f9aba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:50:23, skipping insertion in model container [2021-08-30 17:50:23,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:50:22" (2/3) ... [2021-08-30 17:50:23,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f9aba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:50:23, skipping insertion in model container [2021-08-30 17:50:23,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:50:23" (3/3) ... [2021-08-30 17:50:23,373 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test20-2.i [2021-08-30 17:50:23,376 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:50:23,376 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 74 error locations. [2021-08-30 17:50:23,414 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:50:23,419 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 17:50:23,419 INFO L340 AbstractCegarLoop]: Starting to check reachability of 74 error locations. [2021-08-30 17:50:23,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 62 states have (on average 1.467741935483871) internal successors, (91), 84 states have internal predecessors, (91), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-08-30 17:50:23,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 17:50:23,441 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:50:23,441 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:50:23,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting free_20Err0ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 70 more)] === [2021-08-30 17:50:23,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:50:23,445 INFO L82 PathProgramCache]: Analyzing trace with hash -2108151956, now seen corresponding path program 1 times [2021-08-30 17:50:23,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:50:23,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273319400] [2021-08-30 17:50:23,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:50:23,467 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:50:23,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:50:23,475 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 17:50:23,476 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 17:50:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:50:23,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:50:23,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:50:23,759 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 17:50:23,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:50:23,861 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 17:50:23,862 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:50:23,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273319400] [2021-08-30 17:50:23,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273319400] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:50:23,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:50:23,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 17:50:23,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268650660] [2021-08-30 17:50:23,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:50:23,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:50:23,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:50:23,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:50:23,899 INFO L87 Difference]: Start difference. First operand has 113 states, 62 states have (on average 1.467741935483871) internal successors, (91), 84 states have internal predecessors, (91), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-30 17:50:23,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:50:23,993 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2021-08-30 17:50:23,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:50:23,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 24 [2021-08-30 17:50:23,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:50:24,003 INFO L225 Difference]: With dead ends: 50 [2021-08-30 17:50:24,003 INFO L226 Difference]: Without dead ends: 47 [2021-08-30 17:50:24,005 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.39ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:50:24,011 INFO L928 BasicCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.41ms IncrementalHoareTripleChecker+Time [2021-08-30 17:50:24,013 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 71 Invalid, 118 Unknown, 0 Unchecked, 3.41ms Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 72.41ms Time] [2021-08-30 17:50:24,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-08-30 17:50:24,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2021-08-30 17:50:24,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 24 states have (on average 1.25) internal successors, (30), 28 states have internal predecessors, (30), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-30 17:50:24,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2021-08-30 17:50:24,043 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 24 [2021-08-30 17:50:24,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:50:24,044 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2021-08-30 17:50:24,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-30 17:50:24,044 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2021-08-30 17:50:24,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 17:50:24,045 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:50:24,045 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:50:24,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-30 17:50:24,271 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 17:50:24,271 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting free_20Err0ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 70 more)] === [2021-08-30 17:50:24,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:50:24,272 INFO L82 PathProgramCache]: Analyzing trace with hash -600600147, now seen corresponding path program 1 times [2021-08-30 17:50:24,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:50:24,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382251785] [2021-08-30 17:50:24,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:50:24,273 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:50:24,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:50:24,274 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 17:50:24,275 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 17:50:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:50:24,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-30 17:50:24,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:50:24,613 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 17:50:24,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:50:24,849 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 17:50:24,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:50:24,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382251785] [2021-08-30 17:50:24,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382251785] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:50:24,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:50:24,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-08-30 17:50:24,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358377448] [2021-08-30 17:50:24,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 17:50:24,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:50:24,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 17:50:24,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-30 17:50:24,853 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (10), 4 states have call predecessors, (10), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-08-30 17:50:25,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:50:25,104 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2021-08-30 17:50:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:50:25,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (10), 4 states have call predecessors, (10), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 24 [2021-08-30 17:50:25,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:50:25,105 INFO L225 Difference]: With dead ends: 60 [2021-08-30 17:50:25,106 INFO L226 Difference]: Without dead ends: 60 [2021-08-30 17:50:25,106 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 120.37ms TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-08-30 17:50:25,107 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 69 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 127.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.11ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 156.24ms IncrementalHoareTripleChecker+Time [2021-08-30 17:50:25,107 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 39 Invalid, 251 Unknown, 0 Unchecked, 5.11ms Time], IncrementalHoareTripleChecker [47 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 156.24ms Time] [2021-08-30 17:50:25,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-08-30 17:50:25,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2021-08-30 17:50:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.2) internal successors, (36), 34 states have internal predecessors, (36), 10 states have call successors, (10), 10 states have call predecessors, (10), 11 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2021-08-30 17:50:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2021-08-30 17:50:25,112 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 24 [2021-08-30 17:50:25,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:50:25,112 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2021-08-30 17:50:25,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (10), 4 states have call predecessors, (10), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-08-30 17:50:25,112 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2021-08-30 17:50:25,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 17:50:25,113 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:50:25,113 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:50:25,122 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 17:50:25,313 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 17:50:25,313 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting free_20Err0ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 70 more)] === [2021-08-30 17:50:25,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:50:25,314 INFO L82 PathProgramCache]: Analyzing trace with hash 976042921, now seen corresponding path program 1 times [2021-08-30 17:50:25,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:50:25,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26756495] [2021-08-30 17:50:25,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:50:25,315 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:50:25,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:50:25,316 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 17:50:25,318 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 17:50:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:50:25,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-30 17:50:25,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:50:25,552 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 17:50:25,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:50:25,726 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 17:50:25,727 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:50:25,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26756495] [2021-08-30 17:50:25,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26756495] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:50:25,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:50:25,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2021-08-30 17:50:25,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993057396] [2021-08-30 17:50:25,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-30 17:50:25,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:50:25,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-30 17:50:25,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-08-30 17:50:25,728 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 3 states have call successors, (9), 2 states have call predecessors, (9), 7 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-30 17:50:25,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:50:25,902 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2021-08-30 17:50:25,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 17:50:25,902 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 3 states have call successors, (9), 2 states have call predecessors, (9), 7 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 28 [2021-08-30 17:50:25,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:50:25,903 INFO L225 Difference]: With dead ends: 55 [2021-08-30 17:50:25,903 INFO L226 Difference]: Without dead ends: 55 [2021-08-30 17:50:25,903 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 97.57ms TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-08-30 17:50:25,904 INFO L928 BasicCegarLoop]: 19 mSDtfsCounter, 36 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.19ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 134.66ms IncrementalHoareTripleChecker+Time [2021-08-30 17:50:25,904 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 161 Invalid, 317 Unknown, 0 Unchecked, 2.19ms Time], IncrementalHoareTripleChecker [12 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 134.66ms Time] [2021-08-30 17:50:25,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-08-30 17:50:25,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-08-30 17:50:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 33 states have internal predecessors, (34), 10 states have call successors, (10), 10 states have call predecessors, (10), 11 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2021-08-30 17:50:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2021-08-30 17:50:25,908 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 28 [2021-08-30 17:50:25,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:50:25,908 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2021-08-30 17:50:25,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 3 states have call successors, (9), 2 states have call predecessors, (9), 7 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-30 17:50:25,908 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2021-08-30 17:50:25,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 17:50:25,909 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:50:25,909 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:50:25,918 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 17:50:26,117 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 17:50:26,118 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting free_20Err1ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 70 more)] === [2021-08-30 17:50:26,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:50:26,118 INFO L82 PathProgramCache]: Analyzing trace with hash 192559894, now seen corresponding path program 1 times [2021-08-30 17:50:26,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:50:26,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945822937] [2021-08-30 17:50:26,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:50:26,119 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:50:26,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:50:26,120 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 17:50:26,120 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 17:50:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:50:26,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-30 17:50:26,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:50:26,528 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 17:50:26,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:50:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:50:26,853 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:50:26,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945822937] [2021-08-30 17:50:26,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945822937] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:50:26,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:50:26,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 21 [2021-08-30 17:50:26,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857217454] [2021-08-30 17:50:26,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-30 17:50:26,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:50:26,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-30 17:50:26,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-08-30 17:50:26,855 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 22 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (15), 5 states have call predecessors, (15), 10 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-08-30 17:50:27,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:50:27,426 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2021-08-30 17:50:27,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-30 17:50:27,426 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (15), 5 states have call predecessors, (15), 10 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) Word has length 29 [2021-08-30 17:50:27,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:50:27,427 INFO L225 Difference]: With dead ends: 80 [2021-08-30 17:50:27,427 INFO L226 Difference]: Without dead ends: 80 [2021-08-30 17:50:27,428 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 467.54ms TimeCoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2021-08-30 17:50:27,428 INFO L928 BasicCegarLoop]: 21 mSDtfsCounter, 71 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 266.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.74ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 338.19ms IncrementalHoareTripleChecker+Time [2021-08-30 17:50:27,428 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 31 Invalid, 528 Unknown, 0 Unchecked, 2.74ms Time], IncrementalHoareTripleChecker [13 Valid, 428 Invalid, 0 Unknown, 87 Unchecked, 338.19ms Time] [2021-08-30 17:50:27,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-30 17:50:27,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 72. [2021-08-30 17:50:27,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 45 states have internal predecessors, (46), 13 states have call successors, (13), 13 states have call predecessors, (13), 15 states have return successors, (15), 13 states have call predecessors, (15), 12 states have call successors, (15) [2021-08-30 17:50:27,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2021-08-30 17:50:27,433 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 29 [2021-08-30 17:50:27,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:50:27,433 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2021-08-30 17:50:27,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (15), 5 states have call predecessors, (15), 10 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-08-30 17:50:27,433 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2021-08-30 17:50:27,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 17:50:27,434 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:50:27,434 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:50:27,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-30 17:50:27,634 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 17:50:27,635 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting free_20Err1ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 70 more)] === [2021-08-30 17:50:27,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:50:27,635 INFO L82 PathProgramCache]: Analyzing trace with hash -216264331, now seen corresponding path program 1 times [2021-08-30 17:50:27,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:50:27,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291676206] [2021-08-30 17:50:27,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:50:27,636 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:50:27,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:50:27,636 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 17:50:27,684 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 17:50:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:50:27,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 17:50:27,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:50:27,861 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 17:50:27,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:50:27,970 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 17:50:27,970 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:50:27,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291676206] [2021-08-30 17:50:27,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291676206] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:50:27,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:50:27,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 17:50:27,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704374332] [2021-08-30 17:50:27,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:50:27,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:50:27,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:50:27,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:50:27,973 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-30 17:50:28,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:50:28,032 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2021-08-30 17:50:28,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:50:28,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 29 [2021-08-30 17:50:28,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:50:28,034 INFO L225 Difference]: With dead ends: 53 [2021-08-30 17:50:28,034 INFO L226 Difference]: Without dead ends: 53 [2021-08-30 17:50:28,034 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.30ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:50:28,034 INFO L928 BasicCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.64ms IncrementalHoareTripleChecker+Time [2021-08-30 17:50:28,035 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 63 Invalid, 104 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 53.64ms Time] [2021-08-30 17:50:28,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-08-30 17:50:28,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-08-30 17:50:28,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 32 states have internal predecessors, (32), 10 states have call successors, (10), 10 states have call predecessors, (10), 11 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2021-08-30 17:50:28,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2021-08-30 17:50:28,038 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 29 [2021-08-30 17:50:28,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:50:28,038 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2021-08-30 17:50:28,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-30 17:50:28,038 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2021-08-30 17:50:28,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-30 17:50:28,039 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:50:28,039 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:50:28,050 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 17:50:28,247 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 17:50:28,247 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting free_20Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 70 more)] === [2021-08-30 17:50:28,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:50:28,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1674389835, now seen corresponding path program 1 times [2021-08-30 17:50:28,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:50:28,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771262360] [2021-08-30 17:50:28,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:50:28,248 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:50:28,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:50:28,249 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 17:50:28,249 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 17:50:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:50:28,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-30 17:50:28,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:50:28,390 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 17:50:28,545 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 17:50:28,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:50:28,761 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 17:50:28,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:50:28,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771262360] [2021-08-30 17:50:28,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771262360] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:50:28,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:50:28,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 13 [2021-08-30 17:50:28,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390146880] [2021-08-30 17:50:28,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 17:50:28,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:50:28,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 17:50:28,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-08-30 17:50:28,763 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (10), 3 states have call predecessors, (10), 7 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-30 17:50:28,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:50:28,948 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-08-30 17:50:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 17:50:28,948 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (10), 3 states have call predecessors, (10), 7 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 30 [2021-08-30 17:50:28,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:50:28,949 INFO L225 Difference]: With dead ends: 52 [2021-08-30 17:50:28,949 INFO L226 Difference]: Without dead ends: 52 [2021-08-30 17:50:28,949 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 156.49ms TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-08-30 17:50:28,950 INFO L928 BasicCegarLoop]: 19 mSDtfsCounter, 17 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.02ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 148.88ms IncrementalHoareTripleChecker+Time [2021-08-30 17:50:28,950 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 107 Invalid, 301 Unknown, 0 Unchecked, 2.02ms Time], IncrementalHoareTripleChecker [7 Valid, 255 Invalid, 0 Unknown, 39 Unchecked, 148.88ms Time] [2021-08-30 17:50:28,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-30 17:50:28,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-08-30 17:50:28,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 10 states have call successors, (10), 10 states have call predecessors, (10), 11 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2021-08-30 17:50:28,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-08-30 17:50:28,954 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 30 [2021-08-30 17:50:28,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:50:28,954 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-08-30 17:50:28,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (10), 3 states have call predecessors, (10), 7 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-30 17:50:28,954 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-08-30 17:50:28,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 17:50:28,955 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:50:28,955 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:50:28,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-08-30 17:50:29,161 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 17:50:29,161 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 70 more)] === [2021-08-30 17:50:29,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:50:29,162 INFO L82 PathProgramCache]: Analyzing trace with hash 844909557, now seen corresponding path program 1 times [2021-08-30 17:50:29,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:50:29,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462607220] [2021-08-30 17:50:29,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:50:29,162 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:50:29,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:50:29,163 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 17:50:29,164 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 17:50:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:50:29,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-30 17:50:29,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:50:29,310 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 17:50:29,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:50:29,433 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 17:50:29,434 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:50:29,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462607220] [2021-08-30 17:50:29,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462607220] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:50:29,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:50:29,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 17:50:29,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861278659] [2021-08-30 17:50:29,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:50:29,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:50:29,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:50:29,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:50:29,435 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-30 17:50:29,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:50:29,475 INFO L93 Difference]: Finished difference Result 56 states and 55 transitions. [2021-08-30 17:50:29,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:50:29,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 29 [2021-08-30 17:50:29,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:50:29,476 INFO L225 Difference]: With dead ends: 56 [2021-08-30 17:50:29,476 INFO L226 Difference]: Without dead ends: 37 [2021-08-30 17:50:29,477 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.29ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:50:29,477 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.31ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.26ms IncrementalHoareTripleChecker+Time [2021-08-30 17:50:29,477 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 14 Invalid, 51 Unknown, 0 Unchecked, 0.31ms Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 38.26ms Time] [2021-08-30 17:50:29,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-30 17:50:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-30 17:50:29,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.0) internal successors, (21), 21 states have internal predecessors, (21), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:50:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 36 transitions. [2021-08-30 17:50:29,480 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 36 transitions. Word has length 29 [2021-08-30 17:50:29,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:50:29,480 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 36 transitions. [2021-08-30 17:50:29,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-30 17:50:29,480 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2021-08-30 17:50:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-30 17:50:29,481 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:50:29,481 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:50:29,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-08-30 17:50:29,688 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 17:50:29,690 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 70 more)] === [2021-08-30 17:50:29,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:50:29,690 INFO L82 PathProgramCache]: Analyzing trace with hash -548127480, now seen corresponding path program 1 times [2021-08-30 17:50:29,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:50:29,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82226193] [2021-08-30 17:50:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:50:29,691 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:50:29,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:50:29,692 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 17:50:29,693 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 17:50:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:50:29,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-30 17:50:29,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:50:29,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 17 [2021-08-30 17:50:29,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-08-30 17:50:30,079 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 17:50:30,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:50:36,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:50:36,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82226193] [2021-08-30 17:50:36,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:50:36,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1752466455] [2021-08-30 17:50:36,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:50:36,326 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-30 17:50:36,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-30 17:50:36,331 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-30 17:50:36,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-08-30 17:50:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:50:36,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-30 17:50:36,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:50:36,511 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-30 17:50:36,511 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 17:50:38,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-08-30 17:50:38,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-08-30 17:50:40,788 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 17:50:40,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:50:45,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:50:45,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769962990] [2021-08-30 17:50:45,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:50:45,115 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:50:45,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:50:45,121 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:50:45,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-30 17:50:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:50:45,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-30 17:50:45,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:50:45,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 17 [2021-08-30 17:50:45,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-08-30 17:50:45,421 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 17:50:45,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:50:49,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:50:49,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:50:49,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-30 17:50:49,788 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-30 17:50:49,788 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-08-30 17:50:49,791 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (73 of 74 remaining) [2021-08-30 17:50:49,792 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION (72 of 74 remaining) [2021-08-30 17:50:49,792 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION (71 of 74 remaining) [2021-08-30 17:50:49,792 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION (70 of 74 remaining) [2021-08-30 17:50:49,792 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION (69 of 74 remaining) [2021-08-30 17:50:49,792 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION (68 of 74 remaining) [2021-08-30 17:50:49,792 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION (67 of 74 remaining) [2021-08-30 17:50:49,792 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION (66 of 74 remaining) [2021-08-30 17:50:49,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION (65 of 74 remaining) [2021-08-30 17:50:49,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (64 of 74 remaining) [2021-08-30 17:50:49,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION (63 of 74 remaining) [2021-08-30 17:50:49,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION (62 of 74 remaining) [2021-08-30 17:50:49,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION (61 of 74 remaining) [2021-08-30 17:50:49,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION (60 of 74 remaining) [2021-08-30 17:50:49,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION (59 of 74 remaining) [2021-08-30 17:50:49,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION (58 of 74 remaining) [2021-08-30 17:50:49,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION (57 of 74 remaining) [2021-08-30 17:50:49,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION (56 of 74 remaining) [2021-08-30 17:50:49,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION (55 of 74 remaining) [2021-08-30 17:50:49,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION (54 of 74 remaining) [2021-08-30 17:50:49,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION (53 of 74 remaining) [2021-08-30 17:50:49,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION (52 of 74 remaining) [2021-08-30 17:50:49,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION (51 of 74 remaining) [2021-08-30 17:50:49,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION (50 of 74 remaining) [2021-08-30 17:50:49,794 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION (49 of 74 remaining) [2021-08-30 17:50:49,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION (48 of 74 remaining) [2021-08-30 17:50:49,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION (47 of 74 remaining) [2021-08-30 17:50:49,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION (46 of 74 remaining) [2021-08-30 17:50:49,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION (45 of 74 remaining) [2021-08-30 17:50:49,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION (44 of 74 remaining) [2021-08-30 17:50:49,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION (43 of 74 remaining) [2021-08-30 17:50:49,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION (42 of 74 remaining) [2021-08-30 17:50:49,795 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION (41 of 74 remaining) [2021-08-30 17:50:49,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION (40 of 74 remaining) [2021-08-30 17:50:49,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION (39 of 74 remaining) [2021-08-30 17:50:49,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION (38 of 74 remaining) [2021-08-30 17:50:49,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION (37 of 74 remaining) [2021-08-30 17:50:49,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION (36 of 74 remaining) [2021-08-30 17:50:49,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION (35 of 74 remaining) [2021-08-30 17:50:49,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION (34 of 74 remaining) [2021-08-30 17:50:49,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION (33 of 74 remaining) [2021-08-30 17:50:49,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION (32 of 74 remaining) [2021-08-30 17:50:49,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION (31 of 74 remaining) [2021-08-30 17:50:49,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (30 of 74 remaining) [2021-08-30 17:50:49,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE (29 of 74 remaining) [2021-08-30 17:50:49,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE (28 of 74 remaining) [2021-08-30 17:50:49,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE (27 of 74 remaining) [2021-08-30 17:50:49,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE (26 of 74 remaining) [2021-08-30 17:50:49,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE (25 of 74 remaining) [2021-08-30 17:50:49,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION (24 of 74 remaining) [2021-08-30 17:50:49,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION (23 of 74 remaining) [2021-08-30 17:50:49,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION (22 of 74 remaining) [2021-08-30 17:50:49,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION (21 of 74 remaining) [2021-08-30 17:50:49,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION (20 of 74 remaining) [2021-08-30 17:50:49,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION (19 of 74 remaining) [2021-08-30 17:50:49,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION (18 of 74 remaining) [2021-08-30 17:50:49,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION (17 of 74 remaining) [2021-08-30 17:50:49,799 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE (16 of 74 remaining) [2021-08-30 17:50:49,799 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE (15 of 74 remaining) [2021-08-30 17:50:49,799 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE (14 of 74 remaining) [2021-08-30 17:50:49,799 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE (13 of 74 remaining) [2021-08-30 17:50:49,799 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE (12 of 74 remaining) [2021-08-30 17:50:49,799 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE (11 of 74 remaining) [2021-08-30 17:50:49,799 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION (10 of 74 remaining) [2021-08-30 17:50:49,800 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION (9 of 74 remaining) [2021-08-30 17:50:49,800 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION (8 of 74 remaining) [2021-08-30 17:50:49,800 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION (7 of 74 remaining) [2021-08-30 17:50:49,800 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION (6 of 74 remaining) [2021-08-30 17:50:49,800 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION (5 of 74 remaining) [2021-08-30 17:50:49,800 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION (4 of 74 remaining) [2021-08-30 17:50:49,800 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION (3 of 74 remaining) [2021-08-30 17:50:49,800 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_20Err0ASSERT_VIOLATIONMEMORY_FREE (2 of 74 remaining) [2021-08-30 17:50:49,800 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_20Err1ASSERT_VIOLATIONMEMORY_FREE (1 of 74 remaining) [2021-08-30 17:50:49,800 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_20Err2ASSERT_VIOLATIONMEMORY_FREE (0 of 74 remaining) [2021-08-30 17:50:49,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-08-30 17:50:50,011 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 17:50:50,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-08-30 17:50:50,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-08-30 17:50:50,409 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:50:50,412 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-30 17:50:50,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:50:50 BoogieIcfgContainer [2021-08-30 17:50:50,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:50:50,418 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:50:50,418 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:50:50,418 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:50:50,418 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:50:23" (3/4) ... [2021-08-30 17:50:50,420 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:50:50,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:50:50,420 INFO L158 Benchmark]: Toolchain (without parser) took 28076.89ms. Allocated memory was 65.0MB in the beginning and 102.8MB in the end (delta: 37.7MB). Free memory was 44.0MB in the beginning and 58.5MB in the end (delta: -14.5MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2021-08-30 17:50:50,421 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory was 46.9MB in the beginning and 46.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:50:50,421 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.12ms. Allocated memory is still 65.0MB. Free memory was 43.9MB in the beginning and 29.6MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 17:50:50,421 INFO L158 Benchmark]: Boogie Preprocessor took 80.03ms. Allocated memory is still 65.0MB. Free memory was 29.6MB in the beginning and 44.3MB in the end (delta: -14.7MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-08-30 17:50:50,421 INFO L158 Benchmark]: RCFGBuilder took 560.04ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 44.3MB in the beginning and 40.7MB in the end (delta: 3.6MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2021-08-30 17:50:50,421 INFO L158 Benchmark]: TraceAbstraction took 27048.16ms. Allocated memory was 79.7MB in the beginning and 102.8MB in the end (delta: 23.1MB). Free memory was 40.3MB in the beginning and 58.5MB in the end (delta: -18.2MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2021-08-30 17:50:50,422 INFO L158 Benchmark]: Witness Printer took 2.49ms. Allocated memory is still 102.8MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:50:50,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory was 46.9MB in the beginning and 46.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.12ms. Allocated memory is still 65.0MB. Free memory was 43.9MB in the beginning and 29.6MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.03ms. Allocated memory is still 65.0MB. Free memory was 29.6MB in the beginning and 44.3MB in the end (delta: -14.7MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * RCFGBuilder took 560.04ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 44.3MB in the beginning and 40.7MB in the end (delta: 3.6MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. * TraceAbstraction took 27048.16ms. Allocated memory was 79.7MB in the beginning and 102.8MB in the end (delta: 23.1MB). Free memory was 40.3MB in the beginning and 58.5MB in the end (delta: -18.2MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Witness Printer took 2.49ms. Allocated memory is still 102.8MB. Free memory is still 58.5MB. 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: 789]: 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 789. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L761] struct ldv_device *saved_device_20; [L790] CALL entry_point() [L785] CALL alloc_20() [L772] CALL, EXPR ldv_malloc(sizeof(struct A20)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L772] RET, EXPR ldv_malloc(sizeof(struct A20)) [L772] struct A20 *p = (struct A20*)ldv_malloc(sizeof(struct A20)); [L773] COND TRUE \read(*p) [L774] CALL ldv_register_device(&p->dev) [L763] saved_device_20 = dev [L774] RET ldv_register_device(&p->dev) [L785] RET alloc_20() [L786] CALL free_20() [L778] CALL, EXPR ldv_get_device() [L766] return saved_device_20; [L778] RET, EXPR ldv_get_device() [L778] struct ldv_device *dev = ldv_get_device(); [L779] COND TRUE \read(*dev) [L780] const typeof( ((struct A20 *)0)->dev ) *__mptr = (dev); [L780] struct A20 *p = ({ const typeof( ((struct A20 *)0)->dev ) *__mptr = (dev); (struct A20 *)( (char *)__mptr - ((size_t) &((struct A20 *)0)->dev) );}); [L781] free(p) [L781] free(p) [L781] free(p) [L786] RET free_20() [L787] saved_device_20 = 0 [L790] 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: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 52 procedures, 356 locations, 74 error locations. Started 1 CEGAR loops. OverallTime: 26995.37ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 15.29ms, AutomataDifference: 1448.95ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 10.06ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 215 SdHoareTripleChecker+Valid, 942.27ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 486 SdHoareTripleChecker+Invalid, 743.23ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 126 IncrementalHoareTripleChecker+Unchecked, 1054 mSDsCounter, 83 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1461 IncrementalHoareTripleChecker+Invalid, 1670 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 83 mSolverCounterUnsat, 116 mSDtfsCounter, 1461 mSolverCounterSat, 17.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 406 GetRequests, 319 SyntacticMatches, 7 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 868.95ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred 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: 40.38ms AutomataMinimizationTime, 7 MinimizatonAttempts, 17 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 62.94ms SsaConstructionTime, 160.36ms SatisfiabilityAnalysisTime, 2345.42ms InterpolantComputationTime, 193 NumberOfCodeBlocks, 193 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 372 ConstructedInterpolants, 6 QuantifiedInterpolants, 1640 SizeOfPredicates, 22 NumberOfNonLiveVariables, 789 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-30 17:50:50,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...