./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 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_test6_3.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 8767e0bad2c10bf5e26ce466e806335c672949ef870a6e01ac396a8c6ce00fcd --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 05:58:57,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 05:58:57,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 05:58:57,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 05:58:57,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 05:58:57,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 05:58:57,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 05:58:57,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 05:58:57,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 05:58:57,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 05:58:57,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 05:58:57,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 05:58:57,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 05:58:57,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 05:58:57,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 05:58:57,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 05:58:57,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 05:58:57,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 05:58:57,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 05:58:57,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 05:58:57,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 05:58:57,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 05:58:57,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 05:58:57,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 05:58:57,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 05:58:57,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 05:58:57,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 05:58:57,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 05:58:57,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 05:58:57,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 05:58:57,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 05:58:57,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 05:58:57,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 05:58:57,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 05:58:57,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 05:58:57,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 05:58:57,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 05:58:57,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 05:58:57,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 05:58:57,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 05:58:57,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 05:58:57,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-16 05:58:57,968 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 05:58:57,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 05:58:57,969 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 05:58:57,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 05:58:57,970 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 05:58:57,970 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 05:58:57,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 05:58:57,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 05:58:57,971 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 05:58:57,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 05:58:57,971 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 05:58:57,971 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 05:58:57,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 05:58:57,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 05:58:57,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 05:58:57,972 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 05:58:57,972 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 05:58:57,972 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 05:58:57,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 05:58:57,973 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 05:58:57,973 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 05:58:57,973 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 05:58:57,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 05:58:57,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 05:58:57,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 05:58:57,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 05:58:57,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 05:58:57,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 05:58:57,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 05:58:57,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 05:58:57,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 05:58:57,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8767e0bad2c10bf5e26ce466e806335c672949ef870a6e01ac396a8c6ce00fcd [2021-12-16 05:58:58,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 05:58:58,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 05:58:58,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 05:58:58,200 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 05:58:58,200 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 05:58:58,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2021-12-16 05:58:58,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc059872/f5947b02fc8a43da9d752a6804e48240/FLAGd5bce3c76 [2021-12-16 05:58:58,651 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 05:58:58,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2021-12-16 05:58:58,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc059872/f5947b02fc8a43da9d752a6804e48240/FLAGd5bce3c76 [2021-12-16 05:58:58,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc059872/f5947b02fc8a43da9d752a6804e48240 [2021-12-16 05:58:58,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 05:58:58,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 05:58:58,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 05:58:58,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 05:58:58,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 05:58:58,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:58:58" (1/1) ... [2021-12-16 05:58:58,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f53f69b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:58:58, skipping insertion in model container [2021-12-16 05:58:58,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:58:58" (1/1) ... [2021-12-16 05:58:58,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 05:58:58,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 05:58:59,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 05:58:59,033 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) [2021-12-16 05:58:59,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3b965b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:58:59, skipping insertion in model container [2021-12-16 05:58:59,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 05:58:59,034 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-16 05:58:59,036 INFO L158 Benchmark]: Toolchain (without parser) took 341.81ms. Allocated memory is still 148.9MB. Free memory was 122.4MB in the beginning and 122.4MB in the end (delta: 5.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 05:58:59,037 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 88.1MB. Free memory was 48.6MB in the beginning and 48.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 05:58:59,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.14ms. Allocated memory is still 148.9MB. Free memory was 122.4MB in the beginning and 122.4MB in the end (delta: 5.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 05:58:59,039 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 88.1MB. Free memory was 48.6MB in the beginning and 48.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.14ms. Allocated memory is still 148.9MB. Free memory was 122.4MB in the beginning and 122.4MB in the end (delta: 5.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/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_test6_3.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 8767e0bad2c10bf5e26ce466e806335c672949ef870a6e01ac396a8c6ce00fcd --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 05:59:00,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 05:59:00,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 05:59:00,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 05:59:00,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 05:59:00,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 05:59:00,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 05:59:00,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 05:59:00,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 05:59:00,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 05:59:00,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 05:59:00,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 05:59:00,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 05:59:00,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 05:59:00,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 05:59:00,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 05:59:00,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 05:59:00,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 05:59:00,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 05:59:00,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 05:59:00,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 05:59:00,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 05:59:00,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 05:59:00,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 05:59:00,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 05:59:00,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 05:59:00,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 05:59:00,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 05:59:00,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 05:59:00,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 05:59:00,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 05:59:00,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 05:59:00,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 05:59:00,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 05:59:00,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 05:59:00,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 05:59:00,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 05:59:00,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 05:59:00,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 05:59:00,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 05:59:00,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 05:59:00,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-16 05:59:00,756 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 05:59:00,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 05:59:00,757 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 05:59:00,757 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 05:59:00,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 05:59:00,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 05:59:00,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 05:59:00,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 05:59:00,760 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 05:59:00,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 05:59:00,762 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 05:59:00,762 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 05:59:00,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 05:59:00,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 05:59:00,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 05:59:00,763 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 05:59:00,763 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 05:59:00,763 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 05:59:00,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 05:59:00,763 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 05:59:00,764 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 05:59:00,764 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 05:59:00,764 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 05:59:00,764 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 05:59:00,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 05:59:00,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 05:59:00,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 05:59:00,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 05:59:00,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 05:59:00,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 05:59:00,766 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 05:59:00,766 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 05:59:00,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 05:59:00,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 05:59:00,767 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8767e0bad2c10bf5e26ce466e806335c672949ef870a6e01ac396a8c6ce00fcd [2021-12-16 05:59:01,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 05:59:01,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 05:59:01,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 05:59:01,139 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 05:59:01,139 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 05:59:01,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2021-12-16 05:59:01,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f19b808e3/ecd06f7cd0be4c4b9b9b5a97be65f532/FLAGf8b5b1fac [2021-12-16 05:59:01,661 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 05:59:01,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2021-12-16 05:59:01,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f19b808e3/ecd06f7cd0be4c4b9b9b5a97be65f532/FLAGf8b5b1fac [2021-12-16 05:59:01,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f19b808e3/ecd06f7cd0be4c4b9b9b5a97be65f532 [2021-12-16 05:59:01,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 05:59:01,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 05:59:01,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 05:59:01,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 05:59:01,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 05:59:01,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:59:01" (1/1) ... [2021-12-16 05:59:01,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21fc2ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:01, skipping insertion in model container [2021-12-16 05:59:01,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:59:01" (1/1) ... [2021-12-16 05:59:01,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 05:59:01,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 05:59:02,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 05:59:02,085 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-16 05:59:02,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 05:59:02,133 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 05:59:02,142 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 05:59:02,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 05:59:02,232 INFO L208 MainTranslator]: Completed translation [2021-12-16 05:59:02,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:02 WrapperNode [2021-12-16 05:59:02,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 05:59:02,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 05:59:02,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 05:59:02,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 05:59:02,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:02" (1/1) ... [2021-12-16 05:59:02,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:02" (1/1) ... [2021-12-16 05:59:02,290 INFO L137 Inliner]: procedures = 169, calls = 77, calls flagged for inlining = 25, calls inlined = 7, statements flattened = 55 [2021-12-16 05:59:02,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 05:59:02,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 05:59:02,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 05:59:02,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 05:59:02,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:02" (1/1) ... [2021-12-16 05:59:02,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:02" (1/1) ... [2021-12-16 05:59:02,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:02" (1/1) ... [2021-12-16 05:59:02,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:02" (1/1) ... [2021-12-16 05:59:02,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:02" (1/1) ... [2021-12-16 05:59:02,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:02" (1/1) ... [2021-12-16 05:59:02,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:02" (1/1) ... [2021-12-16 05:59:02,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 05:59:02,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 05:59:02,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 05:59:02,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 05:59:02,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:02" (1/1) ... [2021-12-16 05:59:02,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 05:59:02,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:59:02,363 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) [2021-12-16 05:59:02,393 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 [2021-12-16 05:59:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 05:59:02,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 05:59:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 05:59:02,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 05:59:02,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 05:59:02,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 05:59:02,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 05:59:02,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 05:59:02,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 05:59:02,535 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 05:59:02,536 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 05:59:02,667 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 05:59:02,679 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 05:59:02,679 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 05:59:02,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:59:02 BoogieIcfgContainer [2021-12-16 05:59:02,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 05:59:02,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 05:59:02,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 05:59:02,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 05:59:02,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:59:01" (1/3) ... [2021-12-16 05:59:02,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6f07ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:59:02, skipping insertion in model container [2021-12-16 05:59:02,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:59:02" (2/3) ... [2021-12-16 05:59:02,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6f07ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:59:02, skipping insertion in model container [2021-12-16 05:59:02,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:59:02" (3/3) ... [2021-12-16 05:59:02,685 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_3.i [2021-12-16 05:59:02,688 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 05:59:02,689 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-12-16 05:59:02,721 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 05:59:02,727 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 05:59:02,727 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-16 05:59:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 23 states have (on average 1.565217391304348) internal successors, (36), 31 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:02,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-16 05:59:02,748 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:59:02,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:59:02,749 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-12-16 05:59:02,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:59:02,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1378433930, now seen corresponding path program 1 times [2021-12-16 05:59:02,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 05:59:02,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776105702] [2021-12-16 05:59:02,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:59:02,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 05:59:02,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 05:59:02,764 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) [2021-12-16 05:59:02,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 05:59:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:59:02,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 05:59:02,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:59:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:59:02,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:59:02,946 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 05:59:02,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776105702] [2021-12-16 05:59:02,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776105702] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:59:02,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:59:02,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 05:59:02,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417597909] [2021-12-16 05:59:02,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:59:02,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 05:59:02,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 05:59:02,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 05:59:02,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:59:02,976 INFO L87 Difference]: Start difference. First operand has 34 states, 23 states have (on average 1.565217391304348) internal successors, (36), 31 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:03,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:59:03,031 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2021-12-16 05:59:03,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 05:59:03,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-16 05:59:03,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:59:03,040 INFO L225 Difference]: With dead ends: 62 [2021-12-16 05:59:03,040 INFO L226 Difference]: Without dead ends: 58 [2021-12-16 05:59:03,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:59:03,046 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 28 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:59:03,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 152 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:59:03,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-12-16 05:59:03,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 36. [2021-12-16 05:59:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.48) internal successors, (37), 32 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 05:59:03,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-12-16 05:59:03,069 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 12 [2021-12-16 05:59:03,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:59:03,069 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-12-16 05:59:03,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:03,069 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-12-16 05:59:03,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-16 05:59:03,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:59:03,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:59:03,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-16 05:59:03,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 05:59:03,276 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-12-16 05:59:03,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:59:03,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1378399289, now seen corresponding path program 1 times [2021-12-16 05:59:03,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 05:59:03,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113229241] [2021-12-16 05:59:03,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:59:03,279 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 05:59:03,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 05:59:03,286 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) [2021-12-16 05:59:03,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-16 05:59:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:59:03,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 05:59:03,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:59:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:59:03,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:59:03,372 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 05:59:03,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113229241] [2021-12-16 05:59:03,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113229241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:59:03,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:59:03,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:59:03,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900803762] [2021-12-16 05:59:03,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:59:03,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 05:59:03,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 05:59:03,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 05:59:03,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:59:03,378 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:03,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:59:03,395 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2021-12-16 05:59:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 05:59:03,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-16 05:59:03,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:59:03,396 INFO L225 Difference]: With dead ends: 35 [2021-12-16 05:59:03,397 INFO L226 Difference]: Without dead ends: 35 [2021-12-16 05:59:03,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:59:03,398 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 23 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:59:03,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 92 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:59:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-16 05:59:03,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-12-16 05:59:03,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.44) internal successors, (36), 31 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 05:59:03,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-12-16 05:59:03,402 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 12 [2021-12-16 05:59:03,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:59:03,402 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-12-16 05:59:03,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:03,402 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-12-16 05:59:03,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-16 05:59:03,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:59:03,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:59:03,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-16 05:59:03,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 05:59:03,610 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-12-16 05:59:03,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:59:03,611 INFO L85 PathProgramCache]: Analyzing trace with hash 364376405, now seen corresponding path program 1 times [2021-12-16 05:59:03,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 05:59:03,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434615239] [2021-12-16 05:59:03,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:59:03,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 05:59:03,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 05:59:03,613 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) [2021-12-16 05:59:03,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-16 05:59:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:59:03,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 05:59:03,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:59:03,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:59:03,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:59:03,750 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 05:59:03,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434615239] [2021-12-16 05:59:03,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434615239] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:59:03,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:59:03,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:59:03,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575276885] [2021-12-16 05:59:03,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:59:03,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:59:03,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 05:59:03,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:59:03,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:59:03,752 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:03,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:59:03,797 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-12-16 05:59:03,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 05:59:03,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-16 05:59:03,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:59:03,798 INFO L225 Difference]: With dead ends: 43 [2021-12-16 05:59:03,798 INFO L226 Difference]: Without dead ends: 43 [2021-12-16 05:59:03,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:59:03,799 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 26 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:59:03,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 49 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:59:03,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-16 05:59:03,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2021-12-16 05:59:03,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 35 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 05:59:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2021-12-16 05:59:03,803 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 12 [2021-12-16 05:59:03,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:59:03,803 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2021-12-16 05:59:03,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:03,803 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2021-12-16 05:59:03,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-16 05:59:03,804 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:59:03,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:59:03,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-16 05:59:04,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 05:59:04,012 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-12-16 05:59:04,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:59:04,013 INFO L85 PathProgramCache]: Analyzing trace with hash 364376406, now seen corresponding path program 1 times [2021-12-16 05:59:04,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 05:59:04,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75359383] [2021-12-16 05:59:04,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:59:04,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 05:59:04,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 05:59:04,015 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) [2021-12-16 05:59:04,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-16 05:59:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:59:04,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 05:59:04,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:59:04,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:59:04,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:59:04,140 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 05:59:04,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75359383] [2021-12-16 05:59:04,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75359383] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:59:04,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:59:04,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:59:04,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558353770] [2021-12-16 05:59:04,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:59:04,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:59:04,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 05:59:04,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:59:04,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:59:04,142 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:04,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:59:04,189 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2021-12-16 05:59:04,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 05:59:04,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-16 05:59:04,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:59:04,190 INFO L225 Difference]: With dead ends: 64 [2021-12-16 05:59:04,190 INFO L226 Difference]: Without dead ends: 64 [2021-12-16 05:59:04,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:59:04,191 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 26 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:59:04,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 105 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:59:04,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-16 05:59:04,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2021-12-16 05:59:04,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 52 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 05:59:04,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2021-12-16 05:59:04,196 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 12 [2021-12-16 05:59:04,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:59:04,196 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2021-12-16 05:59:04,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:04,196 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2021-12-16 05:59:04,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 05:59:04,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:59:04,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:59:04,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-16 05:59:04,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 05:59:04,405 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-12-16 05:59:04,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:59:04,406 INFO L85 PathProgramCache]: Analyzing trace with hash 219295069, now seen corresponding path program 1 times [2021-12-16 05:59:04,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 05:59:04,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077200973] [2021-12-16 05:59:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:59:04,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 05:59:04,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 05:59:04,412 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) [2021-12-16 05:59:04,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-16 05:59:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:59:04,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 05:59:04,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:59:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:59:04,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:59:04,523 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 05:59:04,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077200973] [2021-12-16 05:59:04,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077200973] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:59:04,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:59:04,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:59:04,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872833361] [2021-12-16 05:59:04,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:59:04,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 05:59:04,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 05:59:04,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 05:59:04,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:59:04,525 INFO L87 Difference]: Start difference. First operand 56 states and 71 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:04,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:59:04,569 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2021-12-16 05:59:04,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 05:59:04,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-16 05:59:04,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:59:04,571 INFO L225 Difference]: With dead ends: 63 [2021-12-16 05:59:04,571 INFO L226 Difference]: Without dead ends: 63 [2021-12-16 05:59:04,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:59:04,572 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 55 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:59:04,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 115 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:59:04,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-16 05:59:04,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2021-12-16 05:59:04,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 52 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 05:59:04,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2021-12-16 05:59:04,576 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 13 [2021-12-16 05:59:04,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:59:04,576 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2021-12-16 05:59:04,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:04,576 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2021-12-16 05:59:04,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 05:59:04,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:59:04,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:59:04,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-16 05:59:04,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 05:59:04,783 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-12-16 05:59:04,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:59:04,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1588159394, now seen corresponding path program 1 times [2021-12-16 05:59:04,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 05:59:04,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684960930] [2021-12-16 05:59:04,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:59:04,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 05:59:04,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 05:59:04,786 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) [2021-12-16 05:59:04,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-16 05:59:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:59:04,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 05:59:04,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:59:04,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:59:04,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:59:04,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 05:59:04,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684960930] [2021-12-16 05:59:04,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684960930] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:59:04,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:59:04,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 05:59:04,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733338072] [2021-12-16 05:59:04,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:59:04,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 05:59:04,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 05:59:04,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 05:59:04,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:59:04,861 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:04,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:59:04,878 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2021-12-16 05:59:04,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 05:59:04,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-16 05:59:04,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:59:04,880 INFO L225 Difference]: With dead ends: 45 [2021-12-16 05:59:04,881 INFO L226 Difference]: Without dead ends: 45 [2021-12-16 05:59:04,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:59:04,881 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:59:04,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 126 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:59:04,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-16 05:59:04,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-12-16 05:59:04,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 38 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 05:59:04,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-12-16 05:59:04,884 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 13 [2021-12-16 05:59:04,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:59:04,885 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-12-16 05:59:04,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:04,885 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-12-16 05:59:04,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-16 05:59:04,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:59:04,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:59:04,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-16 05:59:05,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 05:59:05,094 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-12-16 05:59:05,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:59:05,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1791787383, now seen corresponding path program 1 times [2021-12-16 05:59:05,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 05:59:05,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360712393] [2021-12-16 05:59:05,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:59:05,095 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 05:59:05,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 05:59:05,096 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) [2021-12-16 05:59:05,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-16 05:59:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:59:05,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 05:59:05,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:59:05,155 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 [2021-12-16 05:59:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:59:05,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:59:05,183 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 05:59:05,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360712393] [2021-12-16 05:59:05,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360712393] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:59:05,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:59:05,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:59:05,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118916367] [2021-12-16 05:59:05,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:59:05,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 05:59:05,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 05:59:05,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 05:59:05,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:59:05,184 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:05,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:59:05,224 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2021-12-16 05:59:05,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 05:59:05,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-16 05:59:05,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:59:05,225 INFO L225 Difference]: With dead ends: 45 [2021-12-16 05:59:05,226 INFO L226 Difference]: Without dead ends: 45 [2021-12-16 05:59:05,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:59:05,226 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 16 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:59:05,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 95 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:59:05,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-16 05:59:05,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2021-12-16 05:59:05,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 37 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 05:59:05,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2021-12-16 05:59:05,229 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 14 [2021-12-16 05:59:05,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:59:05,230 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2021-12-16 05:59:05,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:05,230 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2021-12-16 05:59:05,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-16 05:59:05,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:59:05,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:59:05,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-16 05:59:05,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 05:59:05,442 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-12-16 05:59:05,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:59:05,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1791739619, now seen corresponding path program 1 times [2021-12-16 05:59:05,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 05:59:05,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793946127] [2021-12-16 05:59:05,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:59:05,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 05:59:05,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 05:59:05,444 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) [2021-12-16 05:59:05,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-16 05:59:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:59:05,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-16 05:59:05,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:59:07,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:59:07,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-16 05:59:07,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:59:07,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:59:07,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 05:59:07,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793946127] [2021-12-16 05:59:07,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793946127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:59:07,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:59:07,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 05:59:07,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067896181] [2021-12-16 05:59:07,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:59:07,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 05:59:07,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 05:59:07,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 05:59:07,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=29, Unknown=1, NotChecked=0, Total=42 [2021-12-16 05:59:07,718 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:07,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:59:07,815 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2021-12-16 05:59:07,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 05:59:07,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-16 05:59:07,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:59:07,816 INFO L225 Difference]: With dead ends: 47 [2021-12-16 05:59:07,816 INFO L226 Difference]: Without dead ends: 47 [2021-12-16 05:59:07,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=25, Invalid=64, Unknown=1, NotChecked=0, Total=90 [2021-12-16 05:59:07,816 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 59 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:59:07,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 106 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2021-12-16 05:59:07,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-12-16 05:59:07,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2021-12-16 05:59:07,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.303030303030303) internal successors, (43), 36 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 05:59:07,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2021-12-16 05:59:07,819 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 14 [2021-12-16 05:59:07,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:59:07,819 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2021-12-16 05:59:07,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:07,819 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2021-12-16 05:59:07,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-16 05:59:07,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:59:07,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:59:07,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-16 05:59:08,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 05:59:08,026 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-12-16 05:59:08,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:59:08,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1791739620, now seen corresponding path program 1 times [2021-12-16 05:59:08,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 05:59:08,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810583261] [2021-12-16 05:59:08,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:59:08,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 05:59:08,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 05:59:08,028 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 05:59:08,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-16 05:59:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:59:08,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 05:59:08,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:59:08,156 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-16 05:59:08,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 19 [2021-12-16 05:59:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:59:08,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:59:08,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 05:59:08,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810583261] [2021-12-16 05:59:08,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810583261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:59:08,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:59:08,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:59:08,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495831576] [2021-12-16 05:59:08,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:59:08,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 05:59:08,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 05:59:08,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 05:59:08,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:59:08,193 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:08,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:59:08,263 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-12-16 05:59:08,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 05:59:08,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-16 05:59:08,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:59:08,264 INFO L225 Difference]: With dead ends: 43 [2021-12-16 05:59:08,264 INFO L226 Difference]: Without dead ends: 43 [2021-12-16 05:59:08,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-16 05:59:08,265 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 23 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:59:08,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 91 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2021-12-16 05:59:08,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-16 05:59:08,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2021-12-16 05:59:08,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 35 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 05:59:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2021-12-16 05:59:08,268 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 14 [2021-12-16 05:59:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:59:08,268 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2021-12-16 05:59:08,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:08,268 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2021-12-16 05:59:08,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-16 05:59:08,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:59:08,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:59:08,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-16 05:59:08,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 05:59:08,474 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-12-16 05:59:08,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:59:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2021592266, now seen corresponding path program 1 times [2021-12-16 05:59:08,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 05:59:08,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340028955] [2021-12-16 05:59:08,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:59:08,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 05:59:08,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 05:59:08,476 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 05:59:08,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-16 05:59:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:59:08,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 05:59:08,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:59:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:59:08,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:59:08,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 05:59:08,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340028955] [2021-12-16 05:59:08,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340028955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:59:08,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:59:08,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 05:59:08,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408312896] [2021-12-16 05:59:08,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:59:08,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:59:08,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 05:59:08,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:59:08,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:59:08,547 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:08,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:59:08,573 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2021-12-16 05:59:08,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 05:59:08,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-16 05:59:08,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:59:08,574 INFO L225 Difference]: With dead ends: 41 [2021-12-16 05:59:08,574 INFO L226 Difference]: Without dead ends: 31 [2021-12-16 05:59:08,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:59:08,575 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:59:08,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 73 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:59:08,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-16 05:59:08,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-16 05:59:08,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:08,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-12-16 05:59:08,577 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 14 [2021-12-16 05:59:08,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:59:08,577 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-12-16 05:59:08,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:08,577 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-12-16 05:59:08,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-16 05:59:08,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:59:08,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:59:08,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-16 05:59:08,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 05:59:08,784 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-12-16 05:59:08,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:59:08,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1284300541, now seen corresponding path program 1 times [2021-12-16 05:59:08,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 05:59:08,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516421885] [2021-12-16 05:59:08,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:59:08,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 05:59:08,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 05:59:08,787 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 05:59:08,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-16 05:59:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:59:08,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-16 05:59:08,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:59:08,904 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-16 05:59:08,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 26 [2021-12-16 05:59:09,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2021-12-16 05:59:09,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:59:09,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:59:09,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 05:59:09,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516421885] [2021-12-16 05:59:09,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516421885] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:59:09,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:59:09,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 05:59:09,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764804900] [2021-12-16 05:59:09,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:59:09,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 05:59:09,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 05:59:09,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 05:59:09,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 05:59:09,021 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:09,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:59:09,098 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-12-16 05:59:09,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 05:59:09,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-16 05:59:09,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:59:09,099 INFO L225 Difference]: With dead ends: 30 [2021-12-16 05:59:09,099 INFO L226 Difference]: Without dead ends: 30 [2021-12-16 05:59:09,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-16 05:59:09,099 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 34 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:59:09,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 58 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 13 Unchecked, 0.0s Time] [2021-12-16 05:59:09,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-16 05:59:09,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2021-12-16 05:59:09,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:09,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-12-16 05:59:09,101 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 17 [2021-12-16 05:59:09,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:59:09,102 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-12-16 05:59:09,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:09,102 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-12-16 05:59:09,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-16 05:59:09,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:59:09,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:59:09,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-16 05:59:09,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 05:59:09,309 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-12-16 05:59:09,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:59:09,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1284300540, now seen corresponding path program 1 times [2021-12-16 05:59:09,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 05:59:09,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330663994] [2021-12-16 05:59:09,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:59:09,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 05:59:09,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 05:59:09,311 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 05:59:09,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-16 05:59:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:59:09,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 05:59:09,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:59:11,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:59:11,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-16 05:59:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:59:11,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:59:11,543 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 05:59:11,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330663994] [2021-12-16 05:59:11,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330663994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:59:11,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:59:11,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:59:11,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564874188] [2021-12-16 05:59:11,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:59:11,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 05:59:11,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 05:59:11,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 05:59:11,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2021-12-16 05:59:11,544 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:59:11,599 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-12-16 05:59:11,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 05:59:11,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-16 05:59:11,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:59:11,600 INFO L225 Difference]: With dead ends: 25 [2021-12-16 05:59:11,600 INFO L226 Difference]: Without dead ends: 25 [2021-12-16 05:59:11,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=20, Invalid=35, Unknown=1, NotChecked=0, Total=56 [2021-12-16 05:59:11,600 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:59:11,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 67 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 8 Unchecked, 0.0s Time] [2021-12-16 05:59:11,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-16 05:59:11,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-16 05:59:11,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-12-16 05:59:11,602 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 17 [2021-12-16 05:59:11,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:59:11,602 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-12-16 05:59:11,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:11,602 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-12-16 05:59:11,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 05:59:11,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:59:11,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:59:11,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-16 05:59:11,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 05:59:11,803 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-12-16 05:59:11,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:59:11,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1557205148, now seen corresponding path program 1 times [2021-12-16 05:59:11,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 05:59:11,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743314081] [2021-12-16 05:59:11,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:59:11,804 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 05:59:11,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 05:59:11,805 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 05:59:11,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-16 05:59:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:59:11,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-16 05:59:11,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:59:14,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:59:14,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:59:14,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 05:59:14,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743314081] [2021-12-16 05:59:14,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743314081] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:59:14,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:59:14,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 05:59:14,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000224503] [2021-12-16 05:59:14,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:59:14,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 05:59:14,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 05:59:14,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 05:59:14,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=41, Unknown=1, NotChecked=0, Total=56 [2021-12-16 05:59:14,059 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:14,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:59:14,069 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-12-16 05:59:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 05:59:14,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-12-16 05:59:14,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:59:14,070 INFO L225 Difference]: With dead ends: 31 [2021-12-16 05:59:14,070 INFO L226 Difference]: Without dead ends: 22 [2021-12-16 05:59:14,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=14, Invalid=41, Unknown=1, NotChecked=0, Total=56 [2021-12-16 05:59:14,070 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:59:14,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 85 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2021-12-16 05:59:14,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-16 05:59:14,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-12-16 05:59:14,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-12-16 05:59:14,072 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2021-12-16 05:59:14,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:59:14,072 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-12-16 05:59:14,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:14,072 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-12-16 05:59:14,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-16 05:59:14,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:59:14,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:59:14,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-16 05:59:14,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 05:59:14,274 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-12-16 05:59:14,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:59:14,274 INFO L85 PathProgramCache]: Analyzing trace with hash -261845752, now seen corresponding path program 1 times [2021-12-16 05:59:14,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 05:59:14,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259403497] [2021-12-16 05:59:14,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:59:14,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 05:59:14,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 05:59:14,276 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 05:59:14,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-16 05:59:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:59:14,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 05:59:14,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:59:14,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:59:14,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:59:14,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 05:59:14,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259403497] [2021-12-16 05:59:14,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259403497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:59:14,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:59:14,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:59:14,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088343243] [2021-12-16 05:59:14,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:59:14,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:59:14,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 05:59:14,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:59:14,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:59:14,355 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:14,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:59:14,362 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-12-16 05:59:14,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 05:59:14,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-12-16 05:59:14,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:59:14,363 INFO L225 Difference]: With dead ends: 22 [2021-12-16 05:59:14,363 INFO L226 Difference]: Without dead ends: 22 [2021-12-16 05:59:14,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:59:14,364 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:59:14,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 46 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:59:14,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-16 05:59:14,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-12-16 05:59:14,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.0) internal successors, (19), 19 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2021-12-16 05:59:14,365 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 20 [2021-12-16 05:59:14,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:59:14,365 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2021-12-16 05:59:14,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 05:59:14,366 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2021-12-16 05:59:14,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-16 05:59:14,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:59:14,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:59:14,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-16 05:59:14,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 05:59:14,573 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-12-16 05:59:14,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:59:14,573 INFO L85 PathProgramCache]: Analyzing trace with hash 468899183, now seen corresponding path program 1 times [2021-12-16 05:59:14,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 05:59:14,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486699598] [2021-12-16 05:59:14,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:59:14,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 05:59:14,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 05:59:14,575 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 05:59:14,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-16 05:59:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 05:59:14,631 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 05:59:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 05:59:14,672 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-16 05:59:14,672 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 05:59:14,673 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2021-12-16 05:59:14,674 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (6 of 8 remaining) [2021-12-16 05:59:14,674 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (5 of 8 remaining) [2021-12-16 05:59:14,674 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (4 of 8 remaining) [2021-12-16 05:59:14,675 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (3 of 8 remaining) [2021-12-16 05:59:14,675 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (2 of 8 remaining) [2021-12-16 05:59:14,675 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (1 of 8 remaining) [2021-12-16 05:59:14,675 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (0 of 8 remaining) [2021-12-16 05:59:14,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-16 05:59:14,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 05:59:14,878 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:59:14,880 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 05:59:14,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:59:14 BoogieIcfgContainer [2021-12-16 05:59:14,902 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 05:59:14,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 05:59:14,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 05:59:14,903 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 05:59:14,903 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:59:02" (3/4) ... [2021-12-16 05:59:14,905 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 05:59:14,905 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 05:59:14,905 INFO L158 Benchmark]: Toolchain (without parser) took 13206.58ms. Allocated memory was 48.2MB in the beginning and 88.1MB in the end (delta: 39.8MB). Free memory was 24.3MB in the beginning and 28.8MB in the end (delta: -4.4MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2021-12-16 05:59:14,905 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 48.2MB. Free memory is still 31.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 05:59:14,906 INFO L158 Benchmark]: CACSL2BoogieTranslator took 532.68ms. Allocated memory was 48.2MB in the beginning and 73.4MB in the end (delta: 25.2MB). Free memory was 24.2MB in the beginning and 55.0MB in the end (delta: -30.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-16 05:59:14,906 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.08ms. Allocated memory is still 73.4MB. Free memory was 55.0MB in the beginning and 52.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 05:59:14,906 INFO L158 Benchmark]: Boogie Preprocessor took 41.01ms. Allocated memory is still 73.4MB. Free memory was 52.6MB in the beginning and 51.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 05:59:14,906 INFO L158 Benchmark]: RCFGBuilder took 347.75ms. Allocated memory is still 73.4MB. Free memory was 51.2MB in the beginning and 39.4MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-16 05:59:14,906 INFO L158 Benchmark]: TraceAbstraction took 12220.52ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 39.1MB in the beginning and 28.8MB in the end (delta: 10.4MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2021-12-16 05:59:14,907 INFO L158 Benchmark]: Witness Printer took 2.52ms. Allocated memory is still 88.1MB. Free memory is still 28.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 05:59:14,907 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 48.2MB. Free memory is still 31.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 532.68ms. Allocated memory was 48.2MB in the beginning and 73.4MB in the end (delta: 25.2MB). Free memory was 24.2MB in the beginning and 55.0MB in the end (delta: -30.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.08ms. Allocated memory is still 73.4MB. Free memory was 55.0MB in the beginning and 52.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.01ms. Allocated memory is still 73.4MB. Free memory was 52.6MB in the beginning and 51.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 347.75ms. Allocated memory is still 73.4MB. Free memory was 51.2MB in the beginning and 39.4MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 12220.52ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 39.1MB in the beginning and 28.8MB in the end (delta: 10.4MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * Witness Printer took 2.52ms. Allocated memory is still 88.1MB. Free memory is still 28.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 790]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 790. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L782] struct A a6; VAL [a6={2:0}, ldv_global_msg_list={1:0}] [L791] CALL entry_point() [L784] CALL, EXPR probe1_6(&a6) [L764] int ret = - -3; VAL [a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, ret=3] [L765] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, a6={2:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) VAL [a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(int))={6:0}, ret=3] [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L768] CALL, EXPR f6() [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() [L768] ret = f6() [L769] COND FALSE !(ret<0) [L771] CALL, EXPR g6() [L761] return __VERIFIER_nondet_int(); [L771] RET, EXPR g6() [L771] ret = g6() [L772] COND FALSE !(ret<0) VAL [a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, p={6:0}, ret=0] [L774] a->p = p VAL [a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, p={6:0}, ret=0] [L775] return 0; VAL [\result=0, a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, p={6:0}, ret=0] [L784] RET, EXPR probe1_6(&a6) [L784] int ret = probe1_6(&a6); [L785] COND TRUE ret==0 [L786] FCALL disconnect_2_6(&a6) [L788] a6.p = 0 VAL [a6={2:0}, ldv_global_msg_list={1:0}, ret=0] [L791] RET entry_point() - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 12.2s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 337 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 336 mSDsluCounter, 1260 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 69 IncrementalHoareTripleChecker+Unchecked, 857 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 381 IncrementalHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 403 mSDtfsCounter, 381 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 138 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=4, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 63 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 224 NumberOfCodeBlocks, 224 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 189 ConstructedInterpolants, 22 QuantifiedInterpolants, 1481 SizeOfPredicates, 12 NumberOfNonLiveVariables, 791 ConjunctsInSsa, 99 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 [2021-12-16 05:59:14,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample