./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-properties/list_search-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) 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/list-properties/list_search-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a76de0ac371cd564f57b4f783d9365392784c5ec ................................................................................................................................. 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/list-properties/list_search-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a76de0ac371cd564f57b4f783d9365392784c5ec ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 04:26:37,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 04:26:37,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 04:26:37,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 04:26:37,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 04:26:37,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 04:26:37,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 04:26:37,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 04:26:37,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 04:26:37,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 04:26:37,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 04:26:37,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 04:26:37,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 04:26:37,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 04:26:37,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 04:26:37,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 04:26:37,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 04:26:37,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 04:26:37,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 04:26:37,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 04:26:37,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 04:26:37,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 04:26:37,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 04:26:37,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 04:26:37,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 04:26:37,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 04:26:37,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 04:26:37,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 04:26:37,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 04:26:37,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 04:26:37,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 04:26:37,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 04:26:37,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 04:26:37,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 04:26:37,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 04:26:37,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 04:26:37,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 04:26:37,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 04:26:37,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 04:26:37,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 04:26:37,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 04:26:37,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-08-27 04:26:37,171 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 04:26:37,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 04:26:37,172 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 04:26:37,172 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 04:26:37,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 04:26:37,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 04:26:37,174 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 04:26:37,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 04:26:37,174 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 04:26:37,174 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 04:26:37,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 04:26:37,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 04:26:37,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 04:26:37,175 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 04:26:37,175 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 04:26:37,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 04:26:37,175 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 04:26:37,176 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 04:26:37,176 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 04:26:37,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 04:26:37,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 04:26:37,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 04:26:37,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:26:37,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 04:26:37,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 04:26:37,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 04:26:37,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 04:26:37,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 04:26:37,177 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a76de0ac371cd564f57b4f783d9365392784c5ec [2021-08-27 04:26:37,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 04:26:37,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 04:26:37,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 04:26:37,413 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 04:26:37,414 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 04:26:37,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_search-2.i [2021-08-27 04:26:37,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64dec2f67/1a3ff258bc5240cfa9e486974dd3b467/FLAGd1b764d88 [2021-08-27 04:26:37,899 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 04:26:37,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_search-2.i [2021-08-27 04:26:37,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64dec2f67/1a3ff258bc5240cfa9e486974dd3b467/FLAGd1b764d88 [2021-08-27 04:26:37,922 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64dec2f67/1a3ff258bc5240cfa9e486974dd3b467 [2021-08-27 04:26:37,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 04:26:37,925 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 04:26:37,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 04:26:37,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 04:26:37,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 04:26:37,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:37" (1/1) ... [2021-08-27 04:26:37,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3902034c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:37, skipping insertion in model container [2021-08-27 04:26:37,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:37" (1/1) ... [2021-08-27 04:26:37,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 04:26:37,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:26:38,109 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2021-08-27 04:26:38,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:26:38,259 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 04:26:38,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4abef9f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:38, skipping insertion in model container [2021-08-27 04:26:38,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 04:26:38,261 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-27 04:26:38,262 INFO L168 Benchmark]: Toolchain (without parser) took 335.98 ms. Allocated memory is still 67.1 MB. Free memory was 45.5 MB in the beginning and 47.1 MB in the end (delta: -1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:38,263 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 67.1 MB. Free memory was 47.9 MB in the beginning and 47.8 MB in the end (delta: 40.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:26:38,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.23 ms. Allocated memory is still 67.1 MB. Free memory was 45.3 MB in the beginning and 47.1 MB in the end (delta: -1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:38,266 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 67.1 MB. Free memory was 47.9 MB in the beginning and 47.8 MB in the end (delta: 40.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 333.23 ms. Allocated memory is still 67.1 MB. Free memory was 45.3 MB in the beginning and 47.1 MB in the end (delta: -1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 792]: 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 04:26:39,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 04:26:39,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 04:26:39,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 04:26:39,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 04:26:39,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 04:26:39,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 04:26:39,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 04:26:39,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 04:26:39,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 04:26:39,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 04:26:39,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 04:26:39,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 04:26:39,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 04:26:39,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 04:26:39,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 04:26:39,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 04:26:39,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 04:26:39,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 04:26:39,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 04:26:39,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 04:26:39,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 04:26:39,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 04:26:39,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 04:26:39,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 04:26:39,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 04:26:39,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 04:26:39,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 04:26:39,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 04:26:39,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 04:26:39,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 04:26:39,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 04:26:39,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 04:26:39,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 04:26:39,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 04:26:39,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 04:26:39,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 04:26:39,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 04:26:39,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 04:26:39,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 04:26:39,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 04:26:39,629 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2021-08-27 04:26:39,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 04:26:39,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 04:26:39,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 04:26:39,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 04:26:39,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 04:26:39,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 04:26:39,651 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 04:26:39,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 04:26:39,652 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 04:26:39,652 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 04:26:39,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 04:26:39,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 04:26:39,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 04:26:39,653 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 04:26:39,653 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 04:26:39,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 04:26:39,653 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 04:26:39,653 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 04:26:39,653 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 04:26:39,654 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 04:26:39,654 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 04:26:39,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 04:26:39,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 04:26:39,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 04:26:39,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:26:39,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 04:26:39,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 04:26:39,655 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 04:26:39,655 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 04:26:39,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 04:26:39,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 04:26:39,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a76de0ac371cd564f57b4f783d9365392784c5ec [2021-08-27 04:26:39,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 04:26:39,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 04:26:39,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 04:26:39,885 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 04:26:39,886 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 04:26:39,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_search-2.i [2021-08-27 04:26:39,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70fc7af73/534813d5ee6d474d86293f146123ea0b/FLAG296773462 [2021-08-27 04:26:40,297 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 04:26:40,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_search-2.i [2021-08-27 04:26:40,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70fc7af73/534813d5ee6d474d86293f146123ea0b/FLAG296773462 [2021-08-27 04:26:40,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70fc7af73/534813d5ee6d474d86293f146123ea0b [2021-08-27 04:26:40,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 04:26:40,334 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 04:26:40,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 04:26:40,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 04:26:40,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 04:26:40,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:40" (1/1) ... [2021-08-27 04:26:40,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7090c0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:40, skipping insertion in model container [2021-08-27 04:26:40,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:40" (1/1) ... [2021-08-27 04:26:40,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 04:26:40,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:26:40,528 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2021-08-27 04:26:40,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:26:40,735 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-27 04:26:40,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:26:40,745 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2021-08-27 04:26:40,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:26:40,763 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 04:26:40,770 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2021-08-27 04:26:40,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:26:40,846 INFO L208 MainTranslator]: Completed translation [2021-08-27 04:26:40,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:40 WrapperNode [2021-08-27 04:26:40,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 04:26:40,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 04:26:40,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 04:26:40,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 04:26:40,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:40" (1/1) ... [2021-08-27 04:26:40,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:40" (1/1) ... [2021-08-27 04:26:40,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:40" (1/1) ... [2021-08-27 04:26:40,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:40" (1/1) ... [2021-08-27 04:26:40,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:40" (1/1) ... [2021-08-27 04:26:40,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:40" (1/1) ... [2021-08-27 04:26:40,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:40" (1/1) ... [2021-08-27 04:26:40,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 04:26:40,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 04:26:40,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 04:26:40,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 04:26:40,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:40" (1/1) ... [2021-08-27 04:26:40,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:26:40,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:26:40,965 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 04:26:40,989 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 04:26:41,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 04:26:41,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 04:26:41,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 04:26:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 04:26:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-08-27 04:26:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 04:26:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 04:26:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 04:26:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 04:26:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 04:26:41,009 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2021-08-27 04:26:41,009 INFO L138 BoogieDeclarations]: Found implementation of procedure delete_list [2021-08-27 04:26:41,009 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2021-08-27 04:26:41,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 04:26:41,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 04:26:41,010 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 04:26:41,010 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 04:26:41,010 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 04:26:41,010 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 04:26:41,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 04:26:41,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-08-27 04:26:41,010 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2021-08-27 04:26:41,010 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2021-08-27 04:26:41,010 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2021-08-27 04:26:41,011 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2021-08-27 04:26:41,011 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2021-08-27 04:26:41,011 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2021-08-27 04:26:41,011 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2021-08-27 04:26:41,011 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2021-08-27 04:26:41,011 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2021-08-27 04:26:41,011 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2021-08-27 04:26:41,011 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2021-08-27 04:26:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2021-08-27 04:26:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2021-08-27 04:26:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2021-08-27 04:26:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2021-08-27 04:26:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2021-08-27 04:26:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2021-08-27 04:26:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2021-08-27 04:26:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2021-08-27 04:26:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2021-08-27 04:26:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2021-08-27 04:26:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2021-08-27 04:26:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2021-08-27 04:26:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2021-08-27 04:26:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2021-08-27 04:26:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2021-08-27 04:26:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2021-08-27 04:26:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2021-08-27 04:26:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-08-27 04:26:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2021-08-27 04:26:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2021-08-27 04:26:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2021-08-27 04:26:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2021-08-27 04:26:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2021-08-27 04:26:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2021-08-27 04:26:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2021-08-27 04:26:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2021-08-27 04:26:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2021-08-27 04:26:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-08-27 04:26:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2021-08-27 04:26:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2021-08-27 04:26:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2021-08-27 04:26:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2021-08-27 04:26:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2021-08-27 04:26:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2021-08-27 04:26:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2021-08-27 04:26:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2021-08-27 04:26:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2021-08-27 04:26:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2021-08-27 04:26:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2021-08-27 04:26:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2021-08-27 04:26:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2021-08-27 04:26:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2021-08-27 04:26:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2021-08-27 04:26:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2021-08-27 04:26:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2021-08-27 04:26:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2021-08-27 04:26:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2021-08-27 04:26:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2021-08-27 04:26:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2021-08-27 04:26:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2021-08-27 04:26:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2021-08-27 04:26:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2021-08-27 04:26:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2021-08-27 04:26:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2021-08-27 04:26:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2021-08-27 04:26:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2021-08-27 04:26:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2021-08-27 04:26:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2021-08-27 04:26:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2021-08-27 04:26:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2021-08-27 04:26:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2021-08-27 04:26:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-08-27 04:26:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2021-08-27 04:26:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2021-08-27 04:26:41,028 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2021-08-27 04:26:41,028 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2021-08-27 04:26:41,028 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2021-08-27 04:26:41,028 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2021-08-27 04:26:41,028 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2021-08-27 04:26:41,028 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2021-08-27 04:26:41,028 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2021-08-27 04:26:41,029 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2021-08-27 04:26:41,029 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2021-08-27 04:26:41,029 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2021-08-27 04:26:41,029 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2021-08-27 04:26:41,029 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2021-08-27 04:26:41,029 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2021-08-27 04:26:41,029 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2021-08-27 04:26:41,029 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2021-08-27 04:26:41,029 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2021-08-27 04:26:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2021-08-27 04:26:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2021-08-27 04:26:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2021-08-27 04:26:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2021-08-27 04:26:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2021-08-27 04:26:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2021-08-27 04:26:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2021-08-27 04:26:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2021-08-27 04:26:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2021-08-27 04:26:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 04:26:41,033 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 04:26:41,033 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 04:26:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 04:26:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 04:26:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 04:26:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 04:26:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 04:26:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 04:26:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 04:26:41,039 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 04:26:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 04:26:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 04:26:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 04:26:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 04:26:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 04:26:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 04:26:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 04:26:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 04:26:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 04:26:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 04:26:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 04:26:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 04:26:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 04:26:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 04:26:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 04:26:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 04:26:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 04:26:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 04:26:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 04:26:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 04:26:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 04:26:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 04:26:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 04:26:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 04:26:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 04:26:41,042 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 04:26:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 04:26:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 04:26:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 04:26:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 04:26:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 04:26:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 04:26:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 04:26:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 04:26:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 04:26:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 04:26:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 04:26:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 04:26:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 04:26:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 04:26:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 04:26:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 04:26:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 04:26:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 04:26:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 04:26:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 04:26:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 04:26:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 04:26:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 04:26:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 04:26:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 04:26:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 04:26:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 04:26:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 04:26:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 04:26:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 04:26:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 04:26:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 04:26:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 04:26:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 04:26:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 04:26:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 04:26:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 04:26:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 04:26:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 04:26:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 04:26:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 04:26:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 04:26:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 04:26:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 04:26:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 04:26:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 04:26:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 04:26:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 04:26:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 04:26:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 04:26:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 04:26:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 04:26:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 04:26:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 04:26:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 04:26:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 04:26:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 04:26:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 04:26:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 04:26:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 04:26:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 04:26:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 04:26:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 04:26:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 04:26:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 04:26:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 04:26:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 04:26:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 04:26:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 04:26:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2021-08-27 04:26:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-27 04:26:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 04:26:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure delete_list [2021-08-27 04:26:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 04:26:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 04:26:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2021-08-27 04:26:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 04:26:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-27 04:26:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 04:26:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 04:26:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 04:26:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 04:26:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 04:26:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 04:26:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 04:26:41,838 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 04:26:41,839 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-27 04:26:41,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:41 BoogieIcfgContainer [2021-08-27 04:26:41,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 04:26:41,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 04:26:41,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 04:26:41,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 04:26:41,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:26:40" (1/3) ... [2021-08-27 04:26:41,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448028c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:26:41, skipping insertion in model container [2021-08-27 04:26:41,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:40" (2/3) ... [2021-08-27 04:26:41,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448028c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:26:41, skipping insertion in model container [2021-08-27 04:26:41,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:41" (3/3) ... [2021-08-27 04:26:41,850 INFO L111 eAbstractionObserver]: Analyzing ICFG list_search-2.i [2021-08-27 04:26:41,855 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 04:26:41,855 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2021-08-27 04:26:41,888 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 04:26:41,894 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 04:26:41,894 INFO L340 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2021-08-27 04:26:41,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 57 states have (on average 1.7894736842105263) internal successors, (102), 90 states have internal predecessors, (102), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 04:26:41,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 04:26:41,912 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:41,912 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:41,913 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting insert_listErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-08-27 04:26:41,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:41,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1929349250, now seen corresponding path program 1 times [2021-08-27 04:26:41,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:26:41,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824029688] [2021-08-27 04:26:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:41,925 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:26:41,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:26:41,930 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 04:26:41,948 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 04:26:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:42,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 04:26:42,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:26:42,333 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 04:26:42,344 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 04:26:42,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:26:42,377 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 04:26:42,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:26:42,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824029688] [2021-08-27 04:26:42,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824029688] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:42,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:42,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 04:26:42,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35814772] [2021-08-27 04:26:42,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 04:26:42,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:26:42,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 04:26:42,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 04:26:42,396 INFO L87 Difference]: Start difference. First operand has 106 states, 57 states have (on average 1.7894736842105263) internal successors, (102), 90 states have internal predecessors, (102), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:42,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:42,510 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2021-08-27 04:26:42,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 04:26:42,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-27 04:26:42,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:42,517 INFO L225 Difference]: With dead ends: 102 [2021-08-27 04:26:42,517 INFO L226 Difference]: Without dead ends: 99 [2021-08-27 04:26:42,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 04:26:42,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-08-27 04:26:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-08-27 04:26:42,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 56 states have (on average 1.625) internal successors, (91), 84 states have internal predecessors, (91), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-08-27 04:26:42,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2021-08-27 04:26:42,551 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 10 [2021-08-27 04:26:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:42,551 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2021-08-27 04:26:42,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:42,551 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2021-08-27 04:26:42,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 04:26:42,552 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:42,552 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:42,564 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 04:26:42,761 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 04:26:42,761 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting insert_listErr1REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-08-27 04:26:42,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:42,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1929349251, now seen corresponding path program 1 times [2021-08-27 04:26:42,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:26:42,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329881715] [2021-08-27 04:26:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:42,762 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:26:42,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:26:42,763 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 04:26:42,767 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 04:26:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:42,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 04:26:42,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:26:42,989 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 04:26:43,009 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 04:26:43,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:26:43,073 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 04:26:43,073 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:26:43,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329881715] [2021-08-27 04:26:43,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329881715] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:43,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:43,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-08-27 04:26:43,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674451428] [2021-08-27 04:26:43,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 04:26:43,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:26:43,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 04:26:43,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:26:43,075 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:43,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:43,240 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2021-08-27 04:26:43,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 04:26:43,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-27 04:26:43,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:43,242 INFO L225 Difference]: With dead ends: 95 [2021-08-27 04:26:43,242 INFO L226 Difference]: Without dead ends: 95 [2021-08-27 04:26:43,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:26:43,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-08-27 04:26:43,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-08-27 04:26:43,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 56 states have (on average 1.5535714285714286) internal successors, (87), 80 states have internal predecessors, (87), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-08-27 04:26:43,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2021-08-27 04:26:43,248 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 10 [2021-08-27 04:26:43,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:43,248 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2021-08-27 04:26:43,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:43,248 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2021-08-27 04:26:43,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-27 04:26:43,249 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:43,249 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:43,258 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 04:26:43,456 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 04:26:43,456 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-08-27 04:26:43,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:43,457 INFO L82 PathProgramCache]: Analyzing trace with hash -841914658, now seen corresponding path program 1 times [2021-08-27 04:26:43,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:26:43,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196584960] [2021-08-27 04:26:43,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:43,458 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:26:43,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:26:43,459 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 04:26:43,460 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 04:26:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:43,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 04:26:43,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:26:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-27 04:26:43,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:26:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-08-27 04:26:44,031 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:26:44,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196584960] [2021-08-27 04:26:44,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196584960] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 04:26:44,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:26:44,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-08-27 04:26:44,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800070028] [2021-08-27 04:26:44,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:26:44,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:26:44,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:26:44,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:26:44,037 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-27 04:26:44,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:44,300 INFO L93 Difference]: Finished difference Result 165 states and 182 transitions. [2021-08-27 04:26:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 04:26:44,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 44 [2021-08-27 04:26:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:44,302 INFO L225 Difference]: With dead ends: 165 [2021-08-27 04:26:44,302 INFO L226 Difference]: Without dead ends: 165 [2021-08-27 04:26:44,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 80.0ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-08-27 04:26:44,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-08-27 04:26:44,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 100. [2021-08-27 04:26:44,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 84 states have internal predecessors, (91), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2021-08-27 04:26:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2021-08-27 04:26:44,309 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 44 [2021-08-27 04:26:44,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:44,309 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2021-08-27 04:26:44,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-27 04:26:44,309 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2021-08-27 04:26:44,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-27 04:26:44,310 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:44,310 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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 04:26:44,323 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 04:26:44,518 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 04:26:44,519 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-08-27 04:26:44,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:44,519 INFO L82 PathProgramCache]: Analyzing trace with hash 124950246, now seen corresponding path program 1 times [2021-08-27 04:26:44,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:26:44,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142306266] [2021-08-27 04:26:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:44,520 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:26:44,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:26:44,521 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 04:26:44,525 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 04:26:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:44,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 04:26:44,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:26:44,901 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 04:26:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-08-27 04:26:44,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:26:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-08-27 04:26:45,114 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:26:45,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142306266] [2021-08-27 04:26:45,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142306266] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:45,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:45,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-27 04:26:45,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417794254] [2021-08-27 04:26:45,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:26:45,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:26:45,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:26:45,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:26:45,116 INFO L87 Difference]: Start difference. First operand 100 states and 109 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-27 04:26:45,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:45,402 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2021-08-27 04:26:45,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 04:26:45,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2021-08-27 04:26:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:45,404 INFO L225 Difference]: With dead ends: 127 [2021-08-27 04:26:45,404 INFO L226 Difference]: Without dead ends: 127 [2021-08-27 04:26:45,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.5ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:26:45,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-08-27 04:26:45,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2021-08-27 04:26:45,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 62 states have (on average 1.532258064516129) internal successors, (95), 86 states have internal predecessors, (95), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2021-08-27 04:26:45,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2021-08-27 04:26:45,410 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 44 [2021-08-27 04:26:45,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:45,410 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2021-08-27 04:26:45,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-27 04:26:45,410 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2021-08-27 04:26:45,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-27 04:26:45,411 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:45,411 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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 04:26:45,421 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 04:26:45,616 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 04:26:45,617 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-08-27 04:26:45,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:45,617 INFO L82 PathProgramCache]: Analyzing trace with hash 124950247, now seen corresponding path program 1 times [2021-08-27 04:26:45,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:26:45,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433938669] [2021-08-27 04:26:45,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:45,618 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:26:45,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:26:45,620 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 04:26:45,624 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 04:26:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:45,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 04:26:45,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:26:46,022 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 04:26:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-08-27 04:26:46,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:26:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-08-27 04:26:46,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:26:46,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433938669] [2021-08-27 04:26:46,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433938669] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:46,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:46,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-27 04:26:46,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656165253] [2021-08-27 04:26:46,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 04:26:46,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:26:46,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 04:26:46,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:26:46,430 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-08-27 04:26:46,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:46,984 INFO L93 Difference]: Finished difference Result 147 states and 161 transitions. [2021-08-27 04:26:46,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 04:26:46,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2021-08-27 04:26:46,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:46,986 INFO L225 Difference]: With dead ends: 147 [2021-08-27 04:26:46,986 INFO L226 Difference]: Without dead ends: 147 [2021-08-27 04:26:46,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 133.3ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-08-27 04:26:46,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-08-27 04:26:46,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 113. [2021-08-27 04:26:46,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 72 states have (on average 1.5694444444444444) internal successors, (113), 96 states have internal predecessors, (113), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2021-08-27 04:26:46,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 132 transitions. [2021-08-27 04:26:46,992 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 132 transitions. Word has length 44 [2021-08-27 04:26:46,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:46,992 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 132 transitions. [2021-08-27 04:26:46,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-08-27 04:26:46,992 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 132 transitions. [2021-08-27 04:26:46,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-27 04:26:46,993 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:46,993 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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 04:26:47,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-08-27 04:26:47,205 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 04:26:47,205 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting search_listErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-08-27 04:26:47,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:47,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1335329181, now seen corresponding path program 1 times [2021-08-27 04:26:47,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:26:47,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059126354] [2021-08-27 04:26:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:47,206 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:26:47,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:26:47,207 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 04:26:47,209 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 04:26:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:47,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 04:26:47,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:26:47,667 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-08-27 04:26:47,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:26:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-08-27 04:26:47,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:26:47,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059126354] [2021-08-27 04:26:47,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059126354] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:47,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:47,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 04:26:47,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395072278] [2021-08-27 04:26:47,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:26:47,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:26:47,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:26:47,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:26:47,793 INFO L87 Difference]: Start difference. First operand 113 states and 132 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-27 04:26:47,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:47,918 INFO L93 Difference]: Finished difference Result 134 states and 143 transitions. [2021-08-27 04:26:47,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 04:26:47,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 48 [2021-08-27 04:26:47,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:47,919 INFO L225 Difference]: With dead ends: 134 [2021-08-27 04:26:47,919 INFO L226 Difference]: Without dead ends: 134 [2021-08-27 04:26:47,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:26:47,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-08-27 04:26:47,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 113. [2021-08-27 04:26:47,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 72 states have (on average 1.5416666666666667) internal successors, (111), 96 states have internal predecessors, (111), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2021-08-27 04:26:47,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2021-08-27 04:26:47,923 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 48 [2021-08-27 04:26:47,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:47,923 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2021-08-27 04:26:47,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-27 04:26:47,923 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2021-08-27 04:26:47,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-27 04:26:47,924 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:47,924 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:47,936 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 04:26:48,124 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 04:26:48,125 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-08-27 04:26:48,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:48,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1343794684, now seen corresponding path program 1 times [2021-08-27 04:26:48,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:26:48,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609629321] [2021-08-27 04:26:48,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:48,125 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:26:48,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:26:48,126 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 04:26:48,128 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 04:26:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:48,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-27 04:26:48,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:26:48,566 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 04:26:48,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-27 04:26:48,766 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-08-27 04:26:48,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 41 [2021-08-27 04:26:48,897 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 48 treesize of output 36 [2021-08-27 04:26:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-27 04:26:49,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:27:03,956 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-27 04:27:03,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:27:03,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609629321] [2021-08-27 04:27:03,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609629321] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 04:27:03,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:27:03,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-08-27 04:27:03,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881453599] [2021-08-27 04:27:03,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 04:27:03,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:27:03,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 04:27:03,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=384, Unknown=6, NotChecked=0, Total=462 [2021-08-27 04:27:03,959 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-27 04:27:14,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:27:14,223 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2021-08-27 04:27:14,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-27 04:27:14,224 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 47 [2021-08-27 04:27:14,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:27:14,225 INFO L225 Difference]: With dead ends: 144 [2021-08-27 04:27:14,225 INFO L226 Difference]: Without dead ends: 144 [2021-08-27 04:27:14,225 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 15181.7ms TimeCoverageRelationStatistics Valid=232, Invalid=952, Unknown=6, NotChecked=0, Total=1190 [2021-08-27 04:27:14,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-08-27 04:27:14,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2021-08-27 04:27:14,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.5324675324675325) internal successors, (118), 101 states have internal predecessors, (118), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-08-27 04:27:14,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2021-08-27 04:27:14,229 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 47 [2021-08-27 04:27:14,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:27:14,230 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2021-08-27 04:27:14,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-27 04:27:14,230 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2021-08-27 04:27:14,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-27 04:27:14,231 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:27:14,231 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:27:14,242 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 04:27:14,442 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 04:27:14,442 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-08-27 04:27:14,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:27:14,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1343794683, now seen corresponding path program 1 times [2021-08-27 04:27:14,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:27:14,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227554239] [2021-08-27 04:27:14,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:27:14,445 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:27:14,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:27:14,447 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 04:27:14,448 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 04:27:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:27:14,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-27 04:27:14,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:27:14,939 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 04:27:14,944 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 04:27:15,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-27 04:27:15,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-27 04:27:15,323 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-08-27 04:27:15,323 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 22 treesize of output 22 [2021-08-27 04:27:15,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-08-27 04:27:15,488 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 44 treesize of output 32 [2021-08-27 04:27:15,491 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 29 treesize of output 21 [2021-08-27 04:27:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-27 04:27:15,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:27:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-27 04:27:29,647 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:27:29,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227554239] [2021-08-27 04:27:29,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227554239] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 04:27:29,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:27:29,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-08-27 04:27:29,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432938522] [2021-08-27 04:27:29,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 04:27:29,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:27:29,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 04:27:29,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=392, Unknown=4, NotChecked=0, Total=462 [2021-08-27 04:27:29,649 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-27 04:28:14,481 WARN L207 SmtUtils]: Spent 12.23 s on a formula simplification that was a NOOP. DAG size: 48 [2021-08-27 04:28:27,491 WARN L207 SmtUtils]: Spent 12.27 s on a formula simplification that was a NOOP. DAG size: 61 [2021-08-27 04:28:50,392 WARN L207 SmtUtils]: Spent 14.25 s on a formula simplification that was a NOOP. DAG size: 55 [2021-08-27 04:28:53,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:28:53,455 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2021-08-27 04:28:53,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-27 04:28:53,456 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 47 [2021-08-27 04:28:53,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:28:53,457 INFO L225 Difference]: With dead ends: 154 [2021-08-27 04:28:53,457 INFO L226 Difference]: Without dead ends: 154 [2021-08-27 04:28:53,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 62776.7ms TimeCoverageRelationStatistics Valid=322, Invalid=1395, Unknown=5, NotChecked=0, Total=1722 [2021-08-27 04:28:53,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-08-27 04:28:53,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 118. [2021-08-27 04:28:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 101 states have internal predecessors, (117), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-08-27 04:28:53,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2021-08-27 04:28:53,461 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 47 [2021-08-27 04:28:53,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:28:53,461 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2021-08-27 04:28:53,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-27 04:28:53,461 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2021-08-27 04:28:53,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-27 04:28:53,462 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:28:53,462 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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 04:28:53,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-27 04:28:53,665 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 04:28:53,665 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting search_listErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-08-27 04:28:53,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:28:53,666 INFO L82 PathProgramCache]: Analyzing trace with hash -354583109, now seen corresponding path program 1 times [2021-08-27 04:28:53,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:28:53,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514609454] [2021-08-27 04:28:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:28:53,666 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:28:53,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:28:53,667 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 04:28:53,667 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 04:28:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:28:54,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 04:28:54,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:28:54,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-27 04:28:54,404 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 16 treesize of output 8 [2021-08-27 04:28:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-27 04:28:54,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:28:54,863 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-27 04:28:54,864 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:28:54,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514609454] [2021-08-27 04:28:54,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514609454] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 04:28:54,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:28:54,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2021-08-27 04:28:54,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593747573] [2021-08-27 04:28:54,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-27 04:28:54,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 04:28:54,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-27 04:28:54,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-08-27 04:28:54,865 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-27 04:28:56,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:28:56,576 INFO L93 Difference]: Finished difference Result 146 states and 155 transitions. [2021-08-27 04:28:56,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-27 04:28:56,577 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2021-08-27 04:28:56,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:28:56,577 INFO L225 Difference]: With dead ends: 146 [2021-08-27 04:28:56,578 INFO L226 Difference]: Without dead ends: 146 [2021-08-27 04:28:56,578 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 812.8ms TimeCoverageRelationStatistics Valid=241, Invalid=1019, Unknown=0, NotChecked=0, Total=1260 [2021-08-27 04:28:56,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-08-27 04:28:56,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2021-08-27 04:28:56,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.5064935064935066) internal successors, (116), 101 states have internal predecessors, (116), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-08-27 04:28:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2021-08-27 04:28:56,581 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 51 [2021-08-27 04:28:56,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:28:56,581 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2021-08-27 04:28:56,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-27 04:28:56,581 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2021-08-27 04:28:56,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-27 04:28:56,582 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:28:56,582 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:28:56,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-08-27 04:28:56,795 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 04:28:56,795 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-08-27 04:28:56,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:28:56,796 INFO L82 PathProgramCache]: Analyzing trace with hash 402807334, now seen corresponding path program 2 times [2021-08-27 04:28:56,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 04:28:56,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436856195] [2021-08-27 04:28:56,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 04:28:56,796 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 04:28:56,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 04:28:56,797 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 04:28:56,799 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 04:28:57,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 04:28:57,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 04:28:57,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 37 conjunts are in the unsatisfiable core [2021-08-27 04:28:57,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:28:57,410 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 04:28:57,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-27 04:28:57,648 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-08-27 04:28:57,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 42 [2021-08-27 04:28:58,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-27 04:29:02,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:02,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:02,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:02,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:02,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:02,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:02,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:02,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:02,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:02,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:02,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:02,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:02,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:02,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:02,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-27 04:29:02,360 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-08-27 04:29:02,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 102 [2021-08-27 04:29:02,402 INFO L354 Elim1Store]: treesize reduction 144, result has 30.4 percent of original size [2021-08-27 04:29:02,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 92 treesize of output 123 [2021-08-27 04:29:02,795 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 125 treesize of output 105 [2021-08-27 04:29:03,330 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 04:29:03,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 71 [2021-08-27 04:29:03,744 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 04:29:03,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:29:06,796 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_175 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_~head~0.base_175)))))) is different from false [2021-08-27 04:29:08,877 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| v_~head~0.base_175))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_175 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_~head~0.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_~head~0.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_~head~0.base) .cse0)))))))) (_ bv1 1)))) is different from true [2021-08-27 04:29:10,974 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| v_~head~0.base_175))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_175 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_insert_list_~l.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_insert_list_~l.base) .cse0))))))))))) is different from true [2021-08-27 04:29:13,041 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| v_~head~0.base_175))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_175 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))) (_ bv1 1)))) is different from true [2021-08-27 04:29:15,127 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| v_~head~0.base_175))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_175 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))))))) (_ bv1 1)))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (store (store (store (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) c_insert_list_~l.offset v_DerPreprocessor_9) (bvadd (_ bv1 32) c_insert_list_~l.offset) v_DerPreprocessor_10) (bvadd (_ bv2 32) c_insert_list_~l.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) c_insert_list_~l.offset) v_DerPreprocessor_12) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))) (_ bv1 1))))) is different from true [2021-08-27 04:29:17,264 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| v_~head~0.base_175))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_175 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))))))) (_ bv1 1)))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_insert_list_~l.base_116 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_insert_list_~l.base_116))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_insert_list_~l.base_116 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_insert_list_~l.base_116 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_list_~l.base_116) (_ bv0 32) v_DerPreprocessor_9) (_ bv1 32) v_DerPreprocessor_10) (_ bv2 32) v_DerPreprocessor_11) (_ bv3 32) v_DerPreprocessor_12) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))))) (_ bv1 1)))))) is different from true [2021-08-27 04:29:32,216 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 04:29:32,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436856195] [2021-08-27 04:29:32,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-08-27 04:29:32,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [849608318] [2021-08-27 04:29:32,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 04:29:32,217 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-27 04:29:32,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-27 04:29:32,219 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-27 04:29:32,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-08-27 04:29:32,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 04:29:32,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 04:29:32,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 38 conjunts are in the unsatisfiable core [2021-08-27 04:29:32,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:32,994 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 04:29:33,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-27 04:29:33,157 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-08-27 04:29:33,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 43 [2021-08-27 04:29:33,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-27 04:29:33,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:33,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:33,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:33,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:33,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:33,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:33,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:33,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:33,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:33,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:33,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:33,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:33,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:33,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-27 04:29:33,534 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-27 04:29:33,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 100 [2021-08-27 04:29:33,571 INFO L354 Elim1Store]: treesize reduction 112, result has 29.6 percent of original size [2021-08-27 04:29:33,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 105 [2021-08-27 04:29:33,770 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 125 treesize of output 105 [2021-08-27 04:29:34,177 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 04:29:34,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 71 [2021-08-27 04:29:34,433 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 04:29:34,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:29:37,360 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_~head~0.base_189))))))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_189 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))))))) is different from false [2021-08-27 04:29:39,424 WARN L860 $PredicateComparison]: unable to prove that (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_~head~0.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_~head~0.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_~head~0.base) .cse0)))))))) (_ bv1 1))) (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_189 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|))))))))) (_ bv1 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_189)))))))))) is different from true [2021-08-27 04:29:41,534 WARN L860 $PredicateComparison]: unable to prove that (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_insert_list_~l.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_insert_list_~l.base) .cse0))))))))) (_ bv1 1))) (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_189 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|))))))))) (_ bv1 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_189)))))))))) is different from true [2021-08-27 04:29:43,607 WARN L860 $PredicateComparison]: unable to prove that (or (not (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_insert_list_~l.base)) (_ bv1 1)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))) (_ bv1 1))) (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_189 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|))))))))) (_ bv1 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_189)))))))))) is different from true [2021-08-27 04:29:45,692 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (store (store (store (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) c_insert_list_~l.offset v_DerPreprocessor_21) (bvadd (_ bv1 32) c_insert_list_~l.offset) v_DerPreprocessor_22) (bvadd (_ bv2 32) c_insert_list_~l.offset) v_DerPreprocessor_23) (bvadd (_ bv3 32) c_insert_list_~l.offset) v_DerPreprocessor_24) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))))))) (_ bv1 1)))) (not (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_insert_list_~l.base)) (_ bv1 1)))) (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_189 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|))))))))) (_ bv1 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_189)))))))))) is different from true [2021-08-27 04:29:47,828 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_insert_list_~l.base_123 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_insert_list_~l.base_123 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_insert_list_~l.base_123 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_list_~l.base_123) (_ bv0 32) v_DerPreprocessor_21) (_ bv1 32) v_DerPreprocessor_22) (_ bv2 32) v_DerPreprocessor_23) (_ bv3 32) v_DerPreprocessor_24) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))))))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_insert_list_~l.base_123))))))) (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_189 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|))))))))) (_ bv1 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_189)))))))))) is different from true [2021-08-27 04:29:54,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-08-27 04:29:54,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045210045] [2021-08-27 04:29:54,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 04:29:54,759 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:29:54,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:29:54,770 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:29:54,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-27 04:29:55,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 04:29:55,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 04:29:55,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 38 conjunts are in the unsatisfiable core [2021-08-27 04:29:55,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:29:55,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-27 04:29:55,684 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-08-27 04:29:55,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 46 [2021-08-27 04:29:55,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-27 04:29:56,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:56,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:56,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:56,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:56,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:56,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:56,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:56,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:56,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:56,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:56,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:56,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:56,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:29:56,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-27 04:29:56,146 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-27 04:29:56,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 96 [2021-08-27 04:29:56,196 INFO L354 Elim1Store]: treesize reduction 112, result has 29.6 percent of original size [2021-08-27 04:29:56,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 101 [2021-08-27 04:29:56,468 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 125 treesize of output 105 [2021-08-27 04:29:56,917 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 04:29:56,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 71 [2021-08-27 04:29:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 04:29:57,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 04:30:00,033 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_~head~0.base_203)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_203 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))))) (_ bv1 1))))) is different from false [2021-08-27 04:30:02,095 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_203)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_203 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_~head~0.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_~head~0.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_~head~0.base) .cse0)))))))) (_ bv1 1)))) is different from true [2021-08-27 04:30:04,196 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_203)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_203 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_insert_list_~l.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_insert_list_~l.base) .cse0))))))))))) is different from true [2021-08-27 04:30:06,270 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_203)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_203 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))) (_ bv1 1)))) is different from true [2021-08-27 04:30:08,352 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_203)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_203 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))) (_ bv1 1)))))) (forall ((v_DerPreprocessor_35 (_ BitVec 32)) (v_DerPreprocessor_36 (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (store (store (store (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) c_insert_list_~l.offset v_DerPreprocessor_33) (bvadd (_ bv1 32) c_insert_list_~l.offset) v_DerPreprocessor_34) (bvadd (_ bv2 32) c_insert_list_~l.offset) v_DerPreprocessor_35) (bvadd (_ bv3 32) c_insert_list_~l.offset) v_DerPreprocessor_36) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))) (_ bv1 1))))) is different from true [2021-08-27 04:30:10,513 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_203)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_203 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))) (_ bv1 1)))))) (forall ((v_insert_list_~l.base_130 (_ BitVec 32)) (v_DerPreprocessor_35 (_ BitVec 32)) (v_DerPreprocessor_36 (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_insert_list_~l.base_130))))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_insert_list_~l.base_130 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_insert_list_~l.base_130 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_list_~l.base_130) (_ bv0 32) v_DerPreprocessor_33) (_ bv1 32) v_DerPreprocessor_34) (_ bv2 32) v_DerPreprocessor_35) (_ bv3 32) v_DerPreprocessor_36) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))) (_ bv1 1)))))) is different from true [2021-08-27 04:30:23,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-08-27 04:30:23,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:30:23,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 04:30:23,762 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-27 04:30:23,762 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 04:30:23,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 04:30:23,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location search_listErr0REQUIRES_VIOLATION [2021-08-27 04:30:23,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location search_listErr1REQUIRES_VIOLATION [2021-08-27 04:30:23,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location search_listErr2REQUIRES_VIOLATION [2021-08-27 04:30:23,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location search_listErr3REQUIRES_VIOLATION [2021-08-27 04:30:23,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 04:30:23,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 04:30:23,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 04:30:23,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 04:30:23,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 04:30:23,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 04:30:23,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 04:30:23,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr0REQUIRES_VIOLATION [2021-08-27 04:30:23,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr1REQUIRES_VIOLATION [2021-08-27 04:30:23,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr2REQUIRES_VIOLATION [2021-08-27 04:30:23,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr3REQUIRES_VIOLATION [2021-08-27 04:30:23,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr4REQUIRES_VIOLATION [2021-08-27 04:30:23,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr5REQUIRES_VIOLATION [2021-08-27 04:30:23,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr6REQUIRES_VIOLATION [2021-08-27 04:30:23,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr7REQUIRES_VIOLATION [2021-08-27 04:30:23,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr8REQUIRES_VIOLATION [2021-08-27 04:30:23,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr9REQUIRES_VIOLATION [2021-08-27 04:30:23,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr10ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:30:23,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr11ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:30:23,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr12ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:30:23,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr0REQUIRES_VIOLATION [2021-08-27 04:30:23,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr1REQUIRES_VIOLATION [2021-08-27 04:30:23,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr2REQUIRES_VIOLATION [2021-08-27 04:30:23,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr3REQUIRES_VIOLATION [2021-08-27 04:30:23,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr4REQUIRES_VIOLATION [2021-08-27 04:30:23,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr5REQUIRES_VIOLATION [2021-08-27 04:30:23,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr6REQUIRES_VIOLATION [2021-08-27 04:30:23,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr7REQUIRES_VIOLATION [2021-08-27 04:30:23,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-27 04:30:23,993 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 04:30:24,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-08-27 04:30:24,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-08-27 04:30:24,389 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 04:30:24,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 04:30:24 BoogieIcfgContainer [2021-08-27 04:30:24,396 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 04:30:24,396 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 04:30:24,396 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 04:30:24,397 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 04:30:24,397 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:41" (3/4) ... [2021-08-27 04:30:24,402 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 04:30:24,402 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 04:30:24,402 INFO L168 Benchmark]: Toolchain (without parser) took 224068.86 ms. Allocated memory was 48.2 MB in the beginning and 163.6 MB in the end (delta: 115.3 MB). Free memory was 22.7 MB in the beginning and 80.3 MB in the end (delta: -57.6 MB). Peak memory consumption was 57.4 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:24,403 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 48.2 MB. Free memory was 31.2 MB in the beginning and 31.2 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:30:24,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 511.55 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 22.6 MB in the beginning and 36.0 MB in the end (delta: -13.4 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:24,403 INFO L168 Benchmark]: Boogie Preprocessor took 75.38 ms. Allocated memory is still 60.8 MB. Free memory was 36.0 MB in the beginning and 31.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:24,404 INFO L168 Benchmark]: RCFGBuilder took 916.61 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 31.7 MB in the beginning and 41.7 MB in the end (delta: -10.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:24,404 INFO L168 Benchmark]: TraceAbstraction took 222554.33 ms. Allocated memory was 77.6 MB in the beginning and 163.6 MB in the end (delta: 86.0 MB). Free memory was 41.2 MB in the beginning and 80.8 MB in the end (delta: -39.6 MB). Peak memory consumption was 92.8 MB. Max. memory is 16.1 GB. [2021-08-27 04:30:24,404 INFO L168 Benchmark]: Witness Printer took 5.64 ms. Allocated memory is still 163.6 MB. Free memory was 80.8 MB in the beginning and 80.3 MB in the end (delta: 487.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:30:24,409 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 48.2 MB. Free memory was 31.2 MB in the beginning and 31.2 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 511.55 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 22.6 MB in the beginning and 36.0 MB in the end (delta: -13.4 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.38 ms. Allocated memory is still 60.8 MB. Free memory was 36.0 MB in the beginning and 31.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 916.61 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 31.7 MB in the beginning and 41.7 MB in the end (delta: -10.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 222554.33 ms. Allocated memory was 77.6 MB in the beginning and 163.6 MB in the end (delta: 86.0 MB). Free memory was 41.2 MB in the beginning and 80.8 MB in the end (delta: -39.6 MB). Peak memory consumption was 92.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.64 ms. Allocated memory is still 163.6 MB. Free memory was 80.8 MB in the beginning and 80.3 MB in the end (delta: 487.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms 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: 813]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L769] mlist *head; [L804] int i; [L805] mlist *mylist = 0; [L806] mlist *temp; [L807] CALL insert_list(mylist,2) [L792] l = (mlist*)malloc(sizeof(mlist)) [L793] COND TRUE head==((void *)0) [L794] l->key = k [L795] l->next = ((void *)0) [L800] head = l [L801] return 0; [L807] RET insert_list(mylist,2) [L808] CALL insert_list(mylist,5) [L792] l = (mlist*)malloc(sizeof(mlist)) [L793] COND FALSE !(head==((void *)0)) [L797] l->key = k [L798] l->next = head [L800] head = l [L801] return 0; [L808] RET insert_list(mylist,5) [L809] CALL insert_list(mylist,1) [L792] l = (mlist*)malloc(sizeof(mlist)) [L793] COND FALSE !(head==((void *)0)) [L797] l->key = k [L798] l->next = head [L800] head = l [L801] return 0; [L809] RET insert_list(mylist,1) [L810] CALL insert_list(mylist,3) [L792] l = (mlist*)malloc(sizeof(mlist)) [L793] COND FALSE !(head==((void *)0)) [L797] l->key = k [L798] l->next = head [L800] head = l [L801] return 0; [L810] RET insert_list(mylist,3) [L811] mylist = head [L812] COND TRUE \read(*mylist) [L813] EXPR mylist->next [L813] mylist = mylist->next [L812] COND TRUE \read(*mylist) [L813] EXPR mylist->next [L813] mylist = mylist->next [L812] COND TRUE \read(*mylist) [L813] mylist->next - UnprovableResult [Line: 772]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 773]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 773]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 813]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 820]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 820]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 803]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 794]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 794]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 797]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 797]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 798]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 798]: 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 14 procedures, 130 locations, 33 error locations. Started 1 CEGAR loops. OverallTime: 222500.5ms, OverallIterations: 10, TraceHistogramMax: 4, EmptinessCheckTime: 12.4ms, AutomataDifference: 97334.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 740 SDtfs, 1496 SDslu, 2095 SDs, 0 SdLazy, 3381 SolverSat, 341 SolverUnsat, 16 SolverUnknown, 0 SolverNotchecked, 44946.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 757 GetRequests, 615 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 79047.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=7, InterpolantAutomatonStates: 110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 61.3ms AutomataMinimizationTime, 9 MinimizatonAttempts, 235 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 158.1ms SsaConstructionTime, 630.6ms SatisfiabilityAnalysisTime, 32759.7ms InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 672 ConstructedInterpolants, 39 QuantifiedInterpolants, 3704 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1952 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 18 InterpolantComputations, 10 PerfectInterpolantSequences, 448/526 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 04:30:24,462 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...