./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec 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_test13_1.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 b2e8cde882f52cb03ff4f3b61f5f3fe313955f91 ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.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 b2e8cde882f52cb03ff4f3b61f5f3fe313955f91 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 06:08:00,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:08:00,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:08:00,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:08:00,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:08:00,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:08:00,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:08:00,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:08:00,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:08:00,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:08:00,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:08:00,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:08:00,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:08:00,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:08:00,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:08:00,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:08:00,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:08:00,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:08:00,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:08:00,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:08:00,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:08:00,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:08:00,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:08:00,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:08:00,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:08:00,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:08:00,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:08:00,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:08:00,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:08:00,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:08:00,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:08:00,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:08:00,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:08:00,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:08:00,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:08:00,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:08:00,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:08:00,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:08:00,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:08:00,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:08:00,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:08:00,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 06:08:00,239 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:08:00,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:08:00,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:08:00,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:08:00,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:08:00,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:08:00,242 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:08:00,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:08:00,243 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:08:00,243 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:08:00,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:08:00,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:08:00,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:08:00,244 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:08:00,244 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:08:00,244 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:08:00,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:08:00,244 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:08:00,245 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:08:00,245 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:08:00,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:08:00,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:08:00,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:08:00,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:08:00,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:08:00,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:08:00,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 06:08:00,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 06:08:00,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:08:00,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2e8cde882f52cb03ff4f3b61f5f3fe313955f91 [2021-08-27 06:08:00,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:08:00,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:08:00,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:08:00,540 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:08:00,540 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:08:00,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-08-27 06:08:00,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bba2ffb6b/213d27b179fb4215b998e20ed135a2a2/FLAGb153512ff [2021-08-27 06:08:01,011 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:08:01,012 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-08-27 06:08:01,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bba2ffb6b/213d27b179fb4215b998e20ed135a2a2/FLAGb153512ff [2021-08-27 06:08:01,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bba2ffb6b/213d27b179fb4215b998e20ed135a2a2 [2021-08-27 06:08:01,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:08:01,037 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:08:01,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:08:01,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:08:01,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:08:01,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:08:01" (1/1) ... [2021-08-27 06:08:01,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@263a11f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:08:01, skipping insertion in model container [2021-08-27 06:08:01,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:08:01" (1/1) ... [2021-08-27 06:08:01,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:08:01,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:08:01,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:08:01,333 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-08-27 06:08:01,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a0eb7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:08:01, skipping insertion in model container [2021-08-27 06:08:01,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:08:01,339 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-27 06:08:01,341 INFO L168 Benchmark]: Toolchain (without parser) took 302.88 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 28.6 MB in the beginning and 47.4 MB in the end (delta: -18.8 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-08-27 06:08:01,342 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 52.4 MB. Free memory was 34.2 MB in the beginning and 34.1 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:08:01,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.84 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 28.4 MB in the beginning and 47.4 MB in the end (delta: -19.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-08-27 06:08:01,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 52.4 MB. Free memory was 34.2 MB in the beginning and 34.1 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.84 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 28.4 MB in the beginning and 47.4 MB in the end (delta: -19.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 06:08:02,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:08:02,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:08:02,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:08:02,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:08:02,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:08:02,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:08:02,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:08:02,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:08:02,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:08:02,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:08:02,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:08:02,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:08:02,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:08:02,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:08:02,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:08:02,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:08:02,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:08:02,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:08:02,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:08:02,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:08:02,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:08:02,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:08:02,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:08:02,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:08:02,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:08:02,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:08:02,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:08:02,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:08:02,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:08:02,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:08:02,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:08:02,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:08:02,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:08:02,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:08:02,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:08:02,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:08:02,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:08:02,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:08:02,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:08:02,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:08:02,733 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 06:08:02,773 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:08:02,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:08:02,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:08:02,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:08:02,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:08:02,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:08:02,776 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:08:02,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:08:02,776 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:08:02,777 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:08:02,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:08:02,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:08:02,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:08:02,778 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:08:02,778 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:08:02,778 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:08:02,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:08:02,786 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:08:02,786 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 06:08:02,786 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 06:08:02,786 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:08:02,786 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:08:02,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:08:02,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:08:02,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:08:02,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:08:02,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:08:02,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:08:02,787 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 06:08:02,788 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 06:08:02,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:08:02,788 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 06:08:02,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2e8cde882f52cb03ff4f3b61f5f3fe313955f91 [2021-08-27 06:08:03,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:08:03,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:08:03,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:08:03,046 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:08:03,047 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:08:03,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-08-27 06:08:03,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f169377d1/a2bd7aeb49b04b428275441ca8d4dcc0/FLAG49c990607 [2021-08-27 06:08:03,505 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:08:03,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-08-27 06:08:03,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f169377d1/a2bd7aeb49b04b428275441ca8d4dcc0/FLAG49c990607 [2021-08-27 06:08:03,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f169377d1/a2bd7aeb49b04b428275441ca8d4dcc0 [2021-08-27 06:08:03,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:08:03,529 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:08:03,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:08:03,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:08:03,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:08:03,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:08:03" (1/1) ... [2021-08-27 06:08:03,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@230b3a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:08:03, skipping insertion in model container [2021-08-27 06:08:03,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:08:03" (1/1) ... [2021-08-27 06:08:03,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:08:03,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:08:03,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:08:03,921 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-27 06:08:03,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:08:03,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:08:03,990 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:08:04,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:08:04,056 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:08:04,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:08:04 WrapperNode [2021-08-27 06:08:04,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:08:04,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:08:04,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:08:04,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:08:04,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:08:04" (1/1) ... [2021-08-27 06:08:04,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:08:04" (1/1) ... [2021-08-27 06:08:04,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:08:04" (1/1) ... [2021-08-27 06:08:04,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:08:04" (1/1) ... [2021-08-27 06:08:04,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:08:04" (1/1) ... [2021-08-27 06:08:04,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:08:04" (1/1) ... [2021-08-27 06:08:04,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:08:04" (1/1) ... [2021-08-27 06:08:04,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:08:04,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:08:04,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:08:04,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:08:04,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:08:04" (1/1) ... [2021-08-27 06:08:04,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:08:04,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:08:04,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 06:08:04,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 06:08:04,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:08:04,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:08:04,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-08-27 06:08:04,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:08:04,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 06:08:04,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 06:08:04,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 06:08:04,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 06:08:04,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 06:08:04,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-08-27 06:08:04,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-08-27 06:08:04,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-08-27 06:08:04,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-08-27 06:08:04,225 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-08-27 06:08:04,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-08-27 06:08:04,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-08-27 06:08:04,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-08-27 06:08:04,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-08-27 06:08:04,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-08-27 06:08:04,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-08-27 06:08:04,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-08-27 06:08:04,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-08-27 06:08:04,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-08-27 06:08:04,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-08-27 06:08:04,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-08-27 06:08:04,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-08-27 06:08:04,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-08-27 06:08:04,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-08-27 06:08:04,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-08-27 06:08:04,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-08-27 06:08:04,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-08-27 06:08:04,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-08-27 06:08:04,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-08-27 06:08:04,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-08-27 06:08:04,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-08-27 06:08:04,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-08-27 06:08:04,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-08-27 06:08:04,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-08-27 06:08:04,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-08-27 06:08:04,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-08-27 06:08:04,228 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-08-27 06:08:04,228 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-08-27 06:08:04,229 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_13 [2021-08-27 06:08:04,229 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-08-27 06:08:04,229 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:08:04,229 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 06:08:04,230 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-08-27 06:08:04,230 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-08-27 06:08:04,230 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 06:08:04,230 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 06:08:04,230 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 06:08:04,230 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 06:08:04,230 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 06:08:04,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 06:08:04,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 06:08:04,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 06:08:04,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 06:08:04,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 06:08:04,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 06:08:04,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 06:08:04,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 06:08:04,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 06:08:04,232 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 06:08:04,233 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 06:08:04,233 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 06:08:04,233 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 06:08:04,233 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 06:08:04,233 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 06:08:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 06:08:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 06:08:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 06:08:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 06:08:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 06:08:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 06:08:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 06:08:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 06:08:04,234 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 06:08:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 06:08:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 06:08:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 06:08:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 06:08:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 06:08:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 06:08:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 06:08:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 06:08:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 06:08:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 06:08:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 06:08:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 06:08:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 06:08:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 06:08:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 06:08:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 06:08:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 06:08:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 06:08:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 06:08:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 06:08:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 06:08:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 06:08:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 06:08:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 06:08:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 06:08:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 06:08:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 06:08:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 06:08:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 06:08:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 06:08:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 06:08:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 06:08:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 06:08:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 06:08:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 06:08:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 06:08:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 06:08:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 06:08:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 06:08:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 06:08:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 06:08:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 06:08:04,240 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 06:08:04,240 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 06:08:04,240 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 06:08:04,240 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 06:08:04,241 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 06:08:04,242 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 06:08:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 06:08:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 06:08:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 06:08:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 06:08:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 06:08:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 06:08:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 06:08:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 06:08:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 06:08:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 06:08:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 06:08:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 06:08:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 06:08:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 06:08:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 06:08:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 06:08:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 06:08:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 06:08:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 06:08:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 06:08:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 06:08:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 06:08:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 06:08:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 06:08:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 06:08:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 06:08:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 06:08:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 06:08:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 06:08:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 06:08:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-08-27 06:08:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 06:08:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-08-27 06:08:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-08-27 06:08:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 06:08:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 06:08:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-08-27 06:08:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 06:08:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-08-27 06:08:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-08-27 06:08:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-08-27 06:08:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 06:08:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-08-27 06:08:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-08-27 06:08:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-08-27 06:08:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 06:08:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-08-27 06:08:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-08-27 06:08:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-08-27 06:08:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-08-27 06:08:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-08-27 06:08:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-08-27 06:08:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:08:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-08-27 06:08:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-08-27 06:08:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-08-27 06:08:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-08-27 06:08:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-08-27 06:08:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-27 06:08:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-27 06:08:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-08-27 06:08:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-08-27 06:08:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-08-27 06:08:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-08-27 06:08:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-08-27 06:08:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-08-27 06:08:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-08-27 06:08:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-08-27 06:08:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-08-27 06:08:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-08-27 06:08:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-08-27 06:08:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-08-27 06:08:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-08-27 06:08:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-08-27 06:08:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 06:08:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-08-27 06:08:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-08-27 06:08:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_13 [2021-08-27 06:08:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-08-27 06:08:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:08:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:08:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:08:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 06:08:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:08:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:08:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-08-27 06:08:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-08-27 06:08:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-08-27 06:08:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-08-27 06:08:04,689 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:08:04,929 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:08:05,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:08:05,103 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 06:08:05,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:08:05 BoogieIcfgContainer [2021-08-27 06:08:05,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:08:05,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:08:05,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:08:05,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:08:05,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:08:03" (1/3) ... [2021-08-27 06:08:05,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39dfabf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:08:05, skipping insertion in model container [2021-08-27 06:08:05,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:08:04" (2/3) ... [2021-08-27 06:08:05,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39dfabf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:08:05, skipping insertion in model container [2021-08-27 06:08:05,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:08:05" (3/3) ... [2021-08-27 06:08:05,112 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test13_1.i [2021-08-27 06:08:05,115 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:08:05,115 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-08-27 06:08:05,147 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:08:05,153 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 06:08:05,153 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-08-27 06:08:05,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 65 states have (on average 1.5384615384615385) internal successors, (100), 94 states have internal predecessors, (100), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-08-27 06:08:05,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 06:08:05,170 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:08:05,170 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:08:05,170 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:08:05,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:08:05,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1239054828, now seen corresponding path program 1 times [2021-08-27 06:08:05,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:08:05,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208975102] [2021-08-27 06:08:05,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:08:05,182 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:08:05,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:08:05,187 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:08:05,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-27 06:08:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:08:05,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 06:08:05,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:08:05,502 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-27 06:08:05,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-27 06:08:05,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-08-27 06:08:05,658 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-27 06:08:05,659 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 15 treesize of output 20 [2021-08-27 06:08:05,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:08:05,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:08:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:08:05,915 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:08:05,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208975102] [2021-08-27 06:08:05,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208975102] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:08:05,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:08:05,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 7 [2021-08-27 06:08:05,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823249033] [2021-08-27 06:08:05,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 06:08:05,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:08:05,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 06:08:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-27 06:08:05,946 INFO L87 Difference]: Start difference. First operand has 124 states, 65 states have (on average 1.5384615384615385) internal successors, (100), 94 states have internal predecessors, (100), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:08:06,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:08:06,317 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2021-08-27 06:08:06,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 06:08:06,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2021-08-27 06:08:06,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:08:06,324 INFO L225 Difference]: With dead ends: 67 [2021-08-27 06:08:06,324 INFO L226 Difference]: Without dead ends: 61 [2021-08-27 06:08:06,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 172.9ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-08-27 06:08:06,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-08-27 06:08:06,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-08-27 06:08:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 44 states have internal predecessors, (44), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-08-27 06:08:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2021-08-27 06:08:06,347 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 17 [2021-08-27 06:08:06,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:08:06,347 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2021-08-27 06:08:06,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:08:06,347 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2021-08-27 06:08:06,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 06:08:06,348 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:08:06,348 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:08:06,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-27 06:08:06,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:08:06,553 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:08:06,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:08:06,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1239054827, now seen corresponding path program 1 times [2021-08-27 06:08:06,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:08:06,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112375680] [2021-08-27 06:08:06,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:08:06,554 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:08:06,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:08:06,556 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:08:06,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-27 06:08:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:08:06,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-27 06:08:06,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:08:06,777 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-27 06:08:06,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 35 [2021-08-27 06:08:06,793 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:08:06,794 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 1 case distinctions, treesize of input 35 treesize of output 36 [2021-08-27 06:08:07,294 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-08-27 06:08:07,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 56 [2021-08-27 06:08:07,300 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-27 06:08:07,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 52 [2021-08-27 06:08:09,517 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-08-27 06:08:09,518 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 3 case distinctions, treesize of input 56 treesize of output 61 [2021-08-27 06:08:09,553 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-08-27 06:08:09,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 72 [2021-08-27 06:08:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:08:10,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:08:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:08:21,418 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:08:21,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112375680] [2021-08-27 06:08:21,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112375680] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:08:21,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:08:21,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-08-27 06:08:21,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709643021] [2021-08-27 06:08:21,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 06:08:21,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:08:21,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 06:08:21,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=140, Unknown=4, NotChecked=0, Total=182 [2021-08-27 06:08:21,420 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 06:09:08,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:09:08,422 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2021-08-27 06:09:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 06:09:08,423 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 17 [2021-08-27 06:09:08,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:09:08,424 INFO L225 Difference]: With dead ends: 60 [2021-08-27 06:09:08,424 INFO L226 Difference]: Without dead ends: 60 [2021-08-27 06:09:08,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 12789.0ms TimeCoverageRelationStatistics Valid=83, Invalid=219, Unknown=4, NotChecked=0, Total=306 [2021-08-27 06:09:08,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-08-27 06:09:08,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-08-27 06:09:08,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 43 states have internal predecessors, (43), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-08-27 06:09:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-08-27 06:09:08,429 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 17 [2021-08-27 06:09:08,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:09:08,430 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-08-27 06:09:08,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 06:09:08,430 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-08-27 06:09:08,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 06:09:08,431 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:09:08,431 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:09:08,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-27 06:09:08,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:09:08,631 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __ldv_list_addErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:09:08,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:09:08,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1733078590, now seen corresponding path program 1 times [2021-08-27 06:09:08,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:09:08,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593886271] [2021-08-27 06:09:08,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:09:08,635 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:09:08,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:09:08,636 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:09:08,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-27 06:09:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:09:08,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-27 06:09:08,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:09:09,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-08-27 06:09:09,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:09:09,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:09:09,144 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-08-27 06:09:09,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-08-27 06:09:09,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:09:09,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:09:09,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593886271] [2021-08-27 06:09:09,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593886271] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:09:09,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:09:09,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-08-27 06:09:09,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652683318] [2021-08-27 06:09:09,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 06:09:09,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:09:09,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 06:09:09,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-27 06:09:09,245 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:09:09,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:09:09,571 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2021-08-27 06:09:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 06:09:09,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2021-08-27 06:09:09,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:09:09,572 INFO L225 Difference]: With dead ends: 78 [2021-08-27 06:09:09,572 INFO L226 Difference]: Without dead ends: 78 [2021-08-27 06:09:09,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 178.8ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-08-27 06:09:09,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-08-27 06:09:09,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59. [2021-08-27 06:09:09,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 28 states have (on average 1.5) internal successors, (42), 42 states have internal predecessors, (42), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-08-27 06:09:09,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2021-08-27 06:09:09,578 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 20 [2021-08-27 06:09:09,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:09:09,579 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2021-08-27 06:09:09,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:09:09,579 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2021-08-27 06:09:09,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 06:09:09,579 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:09:09,579 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:09:09,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-27 06:09:09,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:09:09,785 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __ldv_list_addErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:09:09,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:09:09,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1733078589, now seen corresponding path program 1 times [2021-08-27 06:09:09,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:09:09,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663947648] [2021-08-27 06:09:09,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:09:09,786 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:09:09,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:09:09,786 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:09:09,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-27 06:09:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:09:10,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 50 conjunts are in the unsatisfiable core [2021-08-27 06:09:10,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:09:10,050 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:09:10,050 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 1 case distinctions, treesize of input 22 treesize of output 23 [2021-08-27 06:09:10,099 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-27 06:09:10,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 36 [2021-08-27 06:09:10,830 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-08-27 06:09:10,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 54 [2021-08-27 06:09:10,839 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-27 06:09:10,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 45 [2021-08-27 06:09:13,197 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-08-27 06:09:13,197 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 3 case distinctions, treesize of input 55 treesize of output 60 [2021-08-27 06:09:13,264 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-08-27 06:09:13,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 71 [2021-08-27 06:09:13,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2021-08-27 06:09:13,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-08-27 06:09:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:09:13,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:09:28,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:09:28,073 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:09:28,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663947648] [2021-08-27 06:09:28,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663947648] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:09:28,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:09:28,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-08-27 06:09:28,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385776540] [2021-08-27 06:09:28,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-27 06:09:28,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:09:28,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-27 06:09:28,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=321, Unknown=6, NotChecked=0, Total=380 [2021-08-27 06:09:28,075 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 06:10:19,174 WARN L207 SmtUtils]: Spent 10.42 s on a formula simplification that was a NOOP. DAG size: 67 [2021-08-27 06:11:02,766 WARN L207 SmtUtils]: Spent 14.73 s on a formula simplification that was a NOOP. DAG size: 56 [2021-08-27 06:11:09,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:09,322 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2021-08-27 06:11:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-27 06:11:09,323 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2021-08-27 06:11:09,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:09,324 INFO L225 Difference]: With dead ends: 77 [2021-08-27 06:11:09,324 INFO L226 Difference]: Without dead ends: 77 [2021-08-27 06:11:09,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 57437.9ms TimeCoverageRelationStatistics Valid=208, Invalid=836, Unknown=12, NotChecked=0, Total=1056 [2021-08-27 06:11:09,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-08-27 06:11:09,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2021-08-27 06:11:09,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 41 states have internal predecessors, (41), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-08-27 06:11:09,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2021-08-27 06:11:09,328 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 20 [2021-08-27 06:11:09,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:09,329 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2021-08-27 06:11:09,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 06:11:09,329 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2021-08-27 06:11:09,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 06:11:09,329 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:09,329 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:09,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:09,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:09,533 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:11:09,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:09,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1106040363, now seen corresponding path program 1 times [2021-08-27 06:11:09,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:09,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802855965] [2021-08-27 06:11:09,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:09,533 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:09,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:09,534 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:11:09,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-27 06:11:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:09,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:11:09,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:09,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:09,960 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:09,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802855965] [2021-08-27 06:11:09,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802855965] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:09,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:09,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:11:09,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633207904] [2021-08-27 06:11:09,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:11:09,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:09,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:11:09,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:11:09,961 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:11:09,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:09,979 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-08-27 06:11:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:11:09,980 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), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2021-08-27 06:11:09,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:09,980 INFO L225 Difference]: With dead ends: 58 [2021-08-27 06:11:09,980 INFO L226 Difference]: Without dead ends: 58 [2021-08-27 06:11:09,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:11:09,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-27 06:11:09,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-08-27 06:11:09,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 40 states have internal predecessors, (40), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-08-27 06:11:09,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-08-27 06:11:09,985 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 19 [2021-08-27 06:11:09,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:09,985 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-08-27 06:11:09,985 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), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:11:09,985 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-08-27 06:11:09,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 06:11:09,986 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:09,986 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:09,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:10,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:10,189 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:11:10,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:10,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1302553868, now seen corresponding path program 1 times [2021-08-27 06:11:10,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:10,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116668384] [2021-08-27 06:11:10,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:10,190 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:10,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:10,190 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:11:10,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-27 06:11:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:10,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 06:11:10,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:10,490 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-27 06:11:10,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-27 06:11:10,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-08-27 06:11:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:10,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:10,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-08-27 06:11:10,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:10,864 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:10,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116668384] [2021-08-27 06:11:10,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116668384] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:10,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:10,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-08-27 06:11:10,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593359533] [2021-08-27 06:11:10,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 06:11:10,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:10,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 06:11:10,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-27 06:11:10,866 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-27 06:11:11,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:11,182 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2021-08-27 06:11:11,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 06:11:11,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 19 [2021-08-27 06:11:11,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:11,183 INFO L225 Difference]: With dead ends: 56 [2021-08-27 06:11:11,183 INFO L226 Difference]: Without dead ends: 56 [2021-08-27 06:11:11,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-08-27 06:11:11,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-08-27 06:11:11,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-08-27 06:11:11,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 38 states have internal predecessors, (38), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-08-27 06:11:11,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2021-08-27 06:11:11,186 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 19 [2021-08-27 06:11:11,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:11,186 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2021-08-27 06:11:11,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-27 06:11:11,186 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2021-08-27 06:11:11,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 06:11:11,186 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:11,186 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:11,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:11,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:11,399 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:11:11,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:11,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1302553867, now seen corresponding path program 1 times [2021-08-27 06:11:11,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:11,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898120218] [2021-08-27 06:11:11,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:11,399 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:11,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:11,401 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:11:11,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-27 06:11:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:11,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-27 06:11:11,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:11,702 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:11:11,702 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 1 case distinctions, treesize of input 9 treesize of output 11 [2021-08-27 06:11:11,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-08-27 06:11:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:11,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:12,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-08-27 06:11:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:12,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:12,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898120218] [2021-08-27 06:11:12,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898120218] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:12,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:12,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-08-27 06:11:12,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436379800] [2021-08-27 06:11:12,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 06:11:12,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:12,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 06:11:12,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-27 06:11:12,691 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-27 06:11:13,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:13,662 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2021-08-27 06:11:13,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 06:11:13,662 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 19 [2021-08-27 06:11:13,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:13,663 INFO L225 Difference]: With dead ends: 80 [2021-08-27 06:11:13,663 INFO L226 Difference]: Without dead ends: 67 [2021-08-27 06:11:13,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 444.1ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-08-27 06:11:13,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-08-27 06:11:13,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2021-08-27 06:11:13,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 34 states have (on average 1.411764705882353) internal successors, (48), 42 states have internal predecessors, (48), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-27 06:11:13,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2021-08-27 06:11:13,665 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 19 [2021-08-27 06:11:13,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:13,666 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2021-08-27 06:11:13,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-27 06:11:13,666 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2021-08-27 06:11:13,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 06:11:13,666 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:13,666 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:13,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:13,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:13,875 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:11:13,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:13,875 INFO L82 PathProgramCache]: Analyzing trace with hash 2109138627, now seen corresponding path program 1 times [2021-08-27 06:11:13,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:13,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745194454] [2021-08-27 06:11:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:13,876 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:13,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:13,876 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:11:13,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-27 06:11:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:14,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 06:11:14,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:14,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:11:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:14,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:14,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:14,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745194454] [2021-08-27 06:11:14,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745194454] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:14,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:14,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-08-27 06:11:14,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901515165] [2021-08-27 06:11:14,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 06:11:14,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:14,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 06:11:14,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-27 06:11:14,557 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:11:14,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:14,963 INFO L93 Difference]: Finished difference Result 64 states and 63 transitions. [2021-08-27 06:11:14,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 06:11:14,964 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-08-27 06:11:14,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:14,964 INFO L225 Difference]: With dead ends: 64 [2021-08-27 06:11:14,965 INFO L226 Difference]: Without dead ends: 64 [2021-08-27 06:11:14,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 208.5ms TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-08-27 06:11:14,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-27 06:11:14,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2021-08-27 06:11:14,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 41 states have internal predecessors, (45), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-27 06:11:14,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-08-27 06:11:14,970 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 21 [2021-08-27 06:11:14,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:14,970 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-08-27 06:11:14,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:11:14,971 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-08-27 06:11:14,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 06:11:14,971 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:14,971 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:14,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-08-27 06:11:15,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:15,177 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:11:15,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:15,177 INFO L82 PathProgramCache]: Analyzing trace with hash 2109138628, now seen corresponding path program 1 times [2021-08-27 06:11:15,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:15,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283552941] [2021-08-27 06:11:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:15,177 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:15,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:15,178 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:11:15,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-27 06:11:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:15,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-27 06:11:15,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:15,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:11:15,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:15,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:16,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:16,762 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:16,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283552941] [2021-08-27 06:11:16,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283552941] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:16,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:16,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 17 [2021-08-27 06:11:16,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76270599] [2021-08-27 06:11:16,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-27 06:11:16,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:16,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-27 06:11:16,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-08-27 06:11:16,763 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:11:17,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:17,948 INFO L93 Difference]: Finished difference Result 62 states and 61 transitions. [2021-08-27 06:11:17,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 06:11:17,949 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2021-08-27 06:11:17,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:17,950 INFO L225 Difference]: With dead ends: 62 [2021-08-27 06:11:17,950 INFO L226 Difference]: Without dead ends: 62 [2021-08-27 06:11:17,950 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 951.4ms TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-08-27 06:11:17,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-08-27 06:11:17,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2021-08-27 06:11:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 41 states have internal predecessors, (43), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-27 06:11:17,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2021-08-27 06:11:17,952 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 21 [2021-08-27 06:11:17,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:17,952 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2021-08-27 06:11:17,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:11:17,953 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2021-08-27 06:11:17,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 06:11:17,953 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:17,953 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:17,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:18,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:18,161 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:11:18,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:18,161 INFO L82 PathProgramCache]: Analyzing trace with hash -2056745950, now seen corresponding path program 1 times [2021-08-27 06:11:18,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:18,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316483910] [2021-08-27 06:11:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:18,162 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:18,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:18,162 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:11:18,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-27 06:11:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:18,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 06:11:18,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:18,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:18,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:18,739 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:18,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316483910] [2021-08-27 06:11:18,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316483910] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:18,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:18,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:11:18,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859059444] [2021-08-27 06:11:18,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:11:18,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:18,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:11:18,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:11:18,741 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:11:18,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:18,756 INFO L93 Difference]: Finished difference Result 48 states and 47 transitions. [2021-08-27 06:11:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:11:18,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-08-27 06:11:18,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:18,757 INFO L225 Difference]: With dead ends: 48 [2021-08-27 06:11:18,757 INFO L226 Difference]: Without dead ends: 44 [2021-08-27 06:11:18,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.0ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:11:18,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-08-27 06:11:18,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-08-27 06:11:18,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 28 states have internal predecessors, (28), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-27 06:11:18,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 43 transitions. [2021-08-27 06:11:18,759 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 43 transitions. Word has length 21 [2021-08-27 06:11:18,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:18,759 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 43 transitions. [2021-08-27 06:11:18,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:11:18,759 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 43 transitions. [2021-08-27 06:11:18,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 06:11:18,759 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:18,759 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:18,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:18,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:18,960 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __ldv_list_addErr6REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:11:18,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:18,960 INFO L82 PathProgramCache]: Analyzing trace with hash -342340858, now seen corresponding path program 1 times [2021-08-27 06:11:18,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:18,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674271401] [2021-08-27 06:11:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:18,960 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:18,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:18,961 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:11:18,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-27 06:11:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:19,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:11:19,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:19,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:19,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:19,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674271401] [2021-08-27 06:11:19,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674271401] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:19,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:19,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-27 06:11:19,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145633817] [2021-08-27 06:11:19,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:11:19,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:19,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:11:19,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:11:19,453 INFO L87 Difference]: Start difference. First operand 44 states and 43 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:11:19,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:19,593 INFO L93 Difference]: Finished difference Result 43 states and 42 transitions. [2021-08-27 06:11:19,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:11:19,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-08-27 06:11:19,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:19,594 INFO L225 Difference]: With dead ends: 43 [2021-08-27 06:11:19,594 INFO L226 Difference]: Without dead ends: 43 [2021-08-27 06:11:19,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:11:19,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-08-27 06:11:19,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-08-27 06:11:19,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.125) internal successors, (27), 27 states have internal predecessors, (27), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-27 06:11:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 42 transitions. [2021-08-27 06:11:19,597 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 42 transitions. Word has length 23 [2021-08-27 06:11:19,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:19,597 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 42 transitions. [2021-08-27 06:11:19,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:11:19,597 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 42 transitions. [2021-08-27 06:11:19,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 06:11:19,597 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:19,598 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:19,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:19,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:19,805 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __ldv_list_addErr7REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:11:19,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:19,805 INFO L82 PathProgramCache]: Analyzing trace with hash -342340857, now seen corresponding path program 1 times [2021-08-27 06:11:19,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:19,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67135077] [2021-08-27 06:11:19,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:19,806 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:19,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:19,806 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:11:19,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-27 06:11:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:20,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 06:11:20,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:20,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:20,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-08-27 06:11:20,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:20,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:20,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67135077] [2021-08-27 06:11:20,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67135077] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:20,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:20,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-08-27 06:11:20,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121072480] [2021-08-27 06:11:20,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 06:11:20,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:20,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 06:11:20,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-08-27 06:11:20,841 INFO L87 Difference]: Start difference. First operand 43 states and 42 transitions. Second operand has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 06:11:21,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:21,240 INFO L93 Difference]: Finished difference Result 42 states and 41 transitions. [2021-08-27 06:11:21,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 06:11:21,240 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 23 [2021-08-27 06:11:21,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:21,241 INFO L225 Difference]: With dead ends: 42 [2021-08-27 06:11:21,241 INFO L226 Difference]: Without dead ends: 42 [2021-08-27 06:11:21,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 480.7ms TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-08-27 06:11:21,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-27 06:11:21,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-08-27 06:11:21,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-27 06:11:21,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 41 transitions. [2021-08-27 06:11:21,244 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 41 transitions. Word has length 23 [2021-08-27 06:11:21,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:21,244 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 41 transitions. [2021-08-27 06:11:21,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 06:11:21,244 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 41 transitions. [2021-08-27 06:11:21,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-27 06:11:21,245 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:21,245 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:21,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:21,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:21,453 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:11:21,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:21,453 INFO L82 PathProgramCache]: Analyzing trace with hash 891555764, now seen corresponding path program 1 times [2021-08-27 06:11:21,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:21,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019619253] [2021-08-27 06:11:21,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:21,454 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:21,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:21,455 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) [2021-08-27 06:11:21,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-27 06:11:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:21,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 06:11:21,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:22,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:22,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:22,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-08-27 06:11:23,070 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-27 06:11:23,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-08-27 06:11:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:23,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:23,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019619253] [2021-08-27 06:11:23,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019619253] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:23,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:23,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 14 [2021-08-27 06:11:23,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491706538] [2021-08-27 06:11:23,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 06:11:23,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:23,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 06:11:23,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-08-27 06:11:23,302 INFO L87 Difference]: Start difference. First operand 42 states and 41 transitions. Second operand has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) [2021-08-27 06:11:23,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:23,866 INFO L93 Difference]: Finished difference Result 41 states and 40 transitions. [2021-08-27 06:11:23,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 06:11:23,867 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) Word has length 33 [2021-08-27 06:11:23,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:23,868 INFO L225 Difference]: With dead ends: 41 [2021-08-27 06:11:23,868 INFO L226 Difference]: Without dead ends: 41 [2021-08-27 06:11:23,869 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 687.9ms TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-08-27 06:11:23,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-27 06:11:23,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-08-27 06:11:23,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-27 06:11:23,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 40 transitions. [2021-08-27 06:11:23,870 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 40 transitions. Word has length 33 [2021-08-27 06:11:23,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:23,870 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 40 transitions. [2021-08-27 06:11:23,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) [2021-08-27 06:11:23,871 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 40 transitions. [2021-08-27 06:11:23,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-27 06:11:23,871 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:23,871 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:23,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:24,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:24,073 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:11:24,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:24,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1868424939, now seen corresponding path program 1 times [2021-08-27 06:11:24,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:24,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804378901] [2021-08-27 06:11:24,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:24,074 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:24,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:24,074 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) [2021-08-27 06:11:24,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-08-27 06:11:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:24,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 35 conjunts are in the unsatisfiable core [2021-08-27 06:11:24,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:24,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-08-27 06:11:24,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-08-27 06:11:25,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-08-27 06:11:25,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-08-27 06:11:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:25,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:25,784 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-27 06:11:25,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 36 [2021-08-27 06:11:26,286 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-27 06:11:26,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2021-08-27 06:11:26,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-08-27 06:11:26,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-08-27 06:11:26,873 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-27 06:11:26,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-08-27 06:11:27,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-08-27 06:11:27,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-08-27 06:11:27,458 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-27 06:11:27,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-08-27 06:11:28,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:28,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:28,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804378901] [2021-08-27 06:11:28,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804378901] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:28,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:28,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-08-27 06:11:28,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852193313] [2021-08-27 06:11:28,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-27 06:11:28,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:28,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-27 06:11:28,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2021-08-27 06:11:28,435 INFO L87 Difference]: Start difference. First operand 41 states and 40 transitions. Second operand has 26 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 9 states have call successors, (15), 9 states have call predecessors, (15), 10 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2021-08-27 06:11:30,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:30,361 INFO L93 Difference]: Finished difference Result 40 states and 39 transitions. [2021-08-27 06:11:30,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-27 06:11:30,362 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 9 states have call successors, (15), 9 states have call predecessors, (15), 10 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) Word has length 34 [2021-08-27 06:11:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:30,362 INFO L225 Difference]: With dead ends: 40 [2021-08-27 06:11:30,363 INFO L226 Difference]: Without dead ends: 40 [2021-08-27 06:11:30,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2674.1ms TimeCoverageRelationStatistics Valid=226, Invalid=1180, Unknown=0, NotChecked=0, Total=1406 [2021-08-27 06:11:30,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-27 06:11:30,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-08-27 06:11:30,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.0) internal successors, (24), 24 states have internal predecessors, (24), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-27 06:11:30,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 39 transitions. [2021-08-27 06:11:30,364 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 39 transitions. Word has length 34 [2021-08-27 06:11:30,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:30,364 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 39 transitions. [2021-08-27 06:11:30,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 9 states have call successors, (15), 9 states have call predecessors, (15), 10 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2021-08-27 06:11:30,364 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 39 transitions. [2021-08-27 06:11:30,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-27 06:11:30,365 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:30,365 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:30,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:30,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:30,566 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-08-27 06:11:30,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:30,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1326046929, now seen corresponding path program 1 times [2021-08-27 06:11:30,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:30,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451675746] [2021-08-27 06:11:30,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:30,566 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:30,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:30,568 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) [2021-08-27 06:11:30,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-08-27 06:11:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:11:31,069 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 06:11:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:11:31,159 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-27 06:11:31,159 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 06:11:31,160 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:11:31,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-08-27 06:11:31,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-08-27 06:11:31,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-08-27 06:11:31,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-08-27 06:11:31,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-08-27 06:11:31,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-08-27 06:11:31,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-08-27 06:11:31,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-08-27 06:11:31,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-08-27 06:11:31,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-08-27 06:11:31,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-08-27 06:11:31,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-08-27 06:11:31,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-08-27 06:11:31,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-08-27 06:11:31,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-08-27 06:11:31,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-08-27 06:11:31,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-08-27 06:11:31,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-08-27 06:11:31,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-08-27 06:11:31,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-08-27 06:11:31,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-08-27 06:11:31,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-08-27 06:11:31,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-08-27 06:11:31,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-08-27 06:11:31,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-08-27 06:11:31,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-08-27 06:11:31,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-08-27 06:11:31,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-08-27 06:11:31,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-08-27 06:11:31,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-08-27 06:11:31,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-08-27 06:11:31,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-08-27 06:11:31,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-08-27 06:11:31,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-08-27 06:11:31,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-08-27 06:11:31,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-08-27 06:11:31,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-08-27 06:11:31,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-08-27 06:11:31,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-08-27 06:11:31,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-08-27 06:11:31,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-08-27 06:11:31,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-08-27 06:11:31,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:11:31,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:11:31,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:11:31,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:11:31,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:11:31,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:11:31,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-08-27 06:11:31,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-08-27 06:11:31,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-08-27 06:11:31,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-08-27 06:11:31,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-08-27 06:11:31,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-08-27 06:11:31,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-08-27 06:11:31,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-08-27 06:11:31,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:11:31,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:11:31,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:11:31,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:11:31,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:11:31,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:11:31,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-08-27 06:11:31,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-08-27 06:11:31,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-08-27 06:11:31,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-08-27 06:11:31,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-08-27 06:11:31,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-08-27 06:11:31,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-08-27 06:11:31,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-08-27 06:11:31,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:31,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:31,386 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:11:31,393 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-27 06:11:31,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:11:31 BoogieIcfgContainer [2021-08-27 06:11:31,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:11:31,408 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:11:31,408 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:11:31,408 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:11:31,409 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:08:05" (3/4) ... [2021-08-27 06:11:31,411 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 06:11:31,411 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:11:31,411 INFO L168 Benchmark]: Toolchain (without parser) took 207882.28 ms. Allocated memory was 48.2 MB in the beginning and 144.7 MB in the end (delta: 96.5 MB). Free memory was 23.6 MB in the beginning and 75.0 MB in the end (delta: -51.4 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. [2021-08-27 06:11:31,411 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 30.1 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:11:31,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 526.51 ms. Allocated memory was 48.2 MB in the beginning and 67.1 MB in the end (delta: 18.9 MB). Free memory was 23.4 MB in the beginning and 46.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2021-08-27 06:11:31,412 INFO L168 Benchmark]: Boogie Preprocessor took 104.75 ms. Allocated memory is still 67.1 MB. Free memory was 46.4 MB in the beginning and 41.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 06:11:31,412 INFO L168 Benchmark]: RCFGBuilder took 944.20 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 41.5 MB in the beginning and 43.2 MB in the end (delta: -1.8 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. [2021-08-27 06:11:31,412 INFO L168 Benchmark]: TraceAbstraction took 206300.27 ms. Allocated memory was 81.8 MB in the beginning and 144.7 MB in the end (delta: 62.9 MB). Free memory was 42.7 MB in the beginning and 76.1 MB in the end (delta: -33.4 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. [2021-08-27 06:11:31,412 INFO L168 Benchmark]: Witness Printer took 2.68 ms. Allocated memory is still 144.7 MB. Free memory was 76.1 MB in the beginning and 75.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:11:31,413 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 30.1 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 526.51 ms. Allocated memory was 48.2 MB in the beginning and 67.1 MB in the end (delta: 18.9 MB). Free memory was 23.4 MB in the beginning and 46.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.75 ms. Allocated memory is still 67.1 MB. Free memory was 46.4 MB in the beginning and 41.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 944.20 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 41.5 MB in the beginning and 43.2 MB in the end (delta: -1.8 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 206300.27 ms. Allocated memory was 81.8 MB in the beginning and 144.7 MB in the end (delta: 62.9 MB). Free memory was 42.7 MB in the beginning and 76.1 MB in the end (delta: -33.4 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. * Witness Printer took 2.68 ms. Allocated memory is still 144.7 MB. Free memory was 76.1 MB in the beginning and 75.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 772]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 772. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L757] struct ldv_list_head global_list_13 = { &(global_list_13), &(global_list_13) }; VAL [\old(global_list_13)=null, \old(global_list_13)=null, \old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L773] CALL entry_point() VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L769] CALL alloc_13() VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L763] CALL, EXPR ldv_malloc(sizeof(struct A13)) VAL [\old(size)=12, global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L763] RET, EXPR ldv_malloc(sizeof(struct A13)) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, ldv_malloc(sizeof(struct A13))={1:0}] [L763] struct A13 *p = (struct A13 *)ldv_malloc(sizeof(struct A13)); [L764] COND TRUE \read(*p) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, p={1:0}] [L765] CALL ldv_list_add(&p->list, &global_list_13) VAL [global_list_13={-2147483648:0}, head={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}] [L559] EXPR head->next VAL [global_list_13={-2147483648:0}, head={-2147483648:0}, head={-2147483648:0}, head->next={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}] [L559] CALL __ldv_list_add(new, head, head->next) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, next={-2147483648:0}, prev={-2147483648:0}] [L547] next->prev = new VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}, next={-2147483648:0}, next={-2147483648:0}, prev={-2147483648:0}, prev={-2147483648:0}] [L548] new->next = next VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}, next={-2147483648:0}, next={-2147483648:0}, prev={-2147483648:0}, prev={-2147483648:0}] [L549] new->prev = prev VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}, next={-2147483648:0}, next={-2147483648:0}, prev={-2147483648:0}, prev={-2147483648:0}] [L550] prev->next = new VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}, next={-2147483648:0}, next={-2147483648:0}, prev={-2147483648:0}, prev={-2147483648:0}] [L559] RET __ldv_list_add(new, head, head->next) VAL [global_list_13={-2147483648:0}, head={-2147483648:0}, head={-2147483648:0}, head->next={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}] [L765] RET ldv_list_add(&p->list, &global_list_13) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, p={1:0}] [L769] RET alloc_13() VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L770] CALL LDV_INIT_LIST_HEAD(&global_list_13) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, list={-2147483648:0}] [L540] list->next = list VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, list={-2147483648:0}, list={-2147483648:0}] [L541] list->prev = list VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, list={-2147483648:0}, list={-2147483648:0}] [L770] RET LDV_INIT_LIST_HEAD(&global_list_13) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L773] RET entry_point() VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 48 procedures, 335 locations, 71 error locations. Started 1 CEGAR loops. OverallTime: 206239.3ms, OverallIterations: 15, TraceHistogramMax: 1, EmptinessCheckTime: 13.4ms, AutomataDifference: 154934.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 498 SDtfs, 945 SDslu, 1703 SDs, 0 SdLazy, 2304 SolverSat, 432 SolverUnsat, 59 SolverUnknown, 0 SolverNotchecked, 109870.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 662 GetRequests, 435 SyntacticMatches, 31 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 76217.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=0, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 52.5ms AutomataMinimizationTime, 14 MinimizatonAttempts, 50 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 164.6ms SsaConstructionTime, 486.2ms SatisfiabilityAnalysisTime, 43445.3ms InterpolantComputationTime, 346 NumberOfCodeBlocks, 346 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 586 ConstructedInterpolants, 38 QuantifiedInterpolants, 6185 SizeOfPredicates, 128 NumberOfNonLiveVariables, 1929 ConjunctsInSsa, 229 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-27 06:11:31,455 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...