./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 791161d1 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/heap-manipulation/bubble_sort_linux-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 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 05:25:33,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 05:25:33,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 05:25:33,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 05:25:33,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 05:25:33,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 05:25:33,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 05:25:33,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 05:25:33,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 05:25:33,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 05:25:33,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 05:25:33,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 05:25:33,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 05:25:33,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 05:25:33,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 05:25:33,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 05:25:33,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 05:25:33,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 05:25:33,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 05:25:33,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 05:25:33,386 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 05:25:33,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 05:25:33,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 05:25:33,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 05:25:33,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 05:25:33,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 05:25:33,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 05:25:33,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 05:25:33,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 05:25:33,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 05:25:33,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 05:25:33,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 05:25:33,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 05:25:33,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 05:25:33,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 05:25:33,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 05:25:33,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 05:25:33,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 05:25:33,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 05:25:33,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 05:25:33,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 05:25:33,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 05:25:33,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2022-07-23 05:25:33,439 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 05:25:33,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 05:25:33,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 05:25:33,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 05:25:33,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 05:25:33,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 05:25:33,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 05:25:33,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 05:25:33,444 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 05:25:33,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 05:25:33,445 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 05:25:33,445 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 05:25:33,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 05:25:33,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 05:25:33,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 05:25:33,446 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 05:25:33,446 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 05:25:33,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 05:25:33,447 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 05:25:33,447 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 05:25:33,447 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 05:25:33,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 05:25:33,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 05:25:33,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 05:25:33,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:25:33,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 05:25:33,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 05:25:33,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 05:25:33,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 05:25:33,449 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 [2022-07-23 05:25:33,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 05:25:33,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 05:25:33,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 05:25:33,733 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 05:25:33,734 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 05:25:33,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2022-07-23 05:25:33,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c5fd5934/c9c3a70a2b5e470d919e528d36926213/FLAG16149dcbe [2022-07-23 05:25:34,345 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 05:25:34,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2022-07-23 05:25:34,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c5fd5934/c9c3a70a2b5e470d919e528d36926213/FLAG16149dcbe [2022-07-23 05:25:34,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c5fd5934/c9c3a70a2b5e470d919e528d36926213 [2022-07-23 05:25:34,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 05:25:34,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 05:25:34,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 05:25:34,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 05:25:34,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 05:25:34,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:25:34" (1/1) ... [2022-07-23 05:25:34,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3180158f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:34, skipping insertion in model container [2022-07-23 05:25:34,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:25:34" (1/1) ... [2022-07-23 05:25:34,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 05:25:34,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 05:25:35,029 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2022-07-23 05:25:35,054 WARN L570 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-07-23 05:25:35,055 WARN L570 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-07-23 05:25:35,058 WARN L570 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-07-23 05:25:35,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:25:35,091 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-23 05:25:35,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@40f8d38f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:35, skipping insertion in model container [2022-07-23 05:25:35,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 05:25:35,093 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-23 05:25:35,095 INFO L158 Benchmark]: Toolchain (without parser) took 455.40ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 46.4MB in the beginning and 84.0MB in the end (delta: -37.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-23 05:25:35,095 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 86.0MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 05:25:35,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 453.25ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 46.2MB in the beginning and 84.0MB in the end (delta: -37.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-23 05:25:35,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 86.0MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 453.25ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 46.2MB in the beginning and 84.0MB in the end (delta: -37.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 860]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-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 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 05:25:36,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 05:25:36,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 05:25:37,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 05:25:37,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 05:25:37,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 05:25:37,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 05:25:37,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 05:25:37,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 05:25:37,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 05:25:37,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 05:25:37,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 05:25:37,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 05:25:37,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 05:25:37,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 05:25:37,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 05:25:37,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 05:25:37,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 05:25:37,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 05:25:37,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 05:25:37,062 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 05:25:37,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 05:25:37,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 05:25:37,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 05:25:37,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 05:25:37,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 05:25:37,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 05:25:37,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 05:25:37,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 05:25:37,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 05:25:37,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 05:25:37,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 05:25:37,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 05:25:37,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 05:25:37,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 05:25:37,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 05:25:37,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 05:25:37,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 05:25:37,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 05:25:37,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 05:25:37,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 05:25:37,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 05:25:37,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2022-07-23 05:25:37,126 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 05:25:37,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 05:25:37,127 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 05:25:37,127 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 05:25:37,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 05:25:37,128 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 05:25:37,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 05:25:37,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 05:25:37,129 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 05:25:37,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 05:25:37,131 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 05:25:37,131 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 05:25:37,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 05:25:37,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 05:25:37,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 05:25:37,132 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 05:25:37,132 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 05:25:37,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 05:25:37,132 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 05:25:37,132 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-23 05:25:37,133 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-23 05:25:37,133 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 05:25:37,133 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 05:25:37,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 05:25:37,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 05:25:37,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 05:25:37,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:25:37,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 05:25:37,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 05:25:37,135 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-23 05:25:37,135 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-23 05:25:37,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-23 05:25:37,135 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 [2022-07-23 05:25:37,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 05:25:37,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 05:25:37,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 05:25:37,503 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 05:25:37,504 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 05:25:37,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2022-07-23 05:25:37,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e1081180/2701b05ec450469caaab06277f4ea998/FLAG58b8ef041 [2022-07-23 05:25:38,123 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 05:25:38,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2022-07-23 05:25:38,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e1081180/2701b05ec450469caaab06277f4ea998/FLAG58b8ef041 [2022-07-23 05:25:38,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e1081180/2701b05ec450469caaab06277f4ea998 [2022-07-23 05:25:38,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 05:25:38,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 05:25:38,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 05:25:38,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 05:25:38,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 05:25:38,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:25:38" (1/1) ... [2022-07-23 05:25:38,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629af94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:38, skipping insertion in model container [2022-07-23 05:25:38,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:25:38" (1/1) ... [2022-07-23 05:25:38,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 05:25:38,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 05:25:38,821 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2022-07-23 05:25:38,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:25:38,886 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-23 05:25:38,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 05:25:38,946 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2022-07-23 05:25:38,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:25:38,990 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 05:25:39,025 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2022-07-23 05:25:39,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:25:39,095 INFO L208 MainTranslator]: Completed translation [2022-07-23 05:25:39,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:39 WrapperNode [2022-07-23 05:25:39,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 05:25:39,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 05:25:39,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 05:25:39,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 05:25:39,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:39" (1/1) ... [2022-07-23 05:25:39,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:39" (1/1) ... [2022-07-23 05:25:39,176 INFO L137 Inliner]: procedures = 235, calls = 75, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 116 [2022-07-23 05:25:39,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 05:25:39,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 05:25:39,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 05:25:39,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 05:25:39,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:39" (1/1) ... [2022-07-23 05:25:39,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:39" (1/1) ... [2022-07-23 05:25:39,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:39" (1/1) ... [2022-07-23 05:25:39,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:39" (1/1) ... [2022-07-23 05:25:39,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:39" (1/1) ... [2022-07-23 05:25:39,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:39" (1/1) ... [2022-07-23 05:25:39,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:39" (1/1) ... [2022-07-23 05:25:39,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 05:25:39,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 05:25:39,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 05:25:39,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 05:25:39,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:39" (1/1) ... [2022-07-23 05:25:39,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:25:39,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:25:39,288 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) [2022-07-23 05:25:39,299 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 [2022-07-23 05:25:39,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-23 05:25:39,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 05:25:39,339 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2022-07-23 05:25:39,339 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2022-07-23 05:25:39,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 05:25:39,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-23 05:25:39,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-23 05:25:39,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-23 05:25:39,341 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2022-07-23 05:25:39,342 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2022-07-23 05:25:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-07-23 05:25:39,342 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-07-23 05:25:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 05:25:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 05:25:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 05:25:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-07-23 05:25:39,343 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-07-23 05:25:39,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 05:25:39,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 05:25:39,523 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 05:25:39,525 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 05:25:40,385 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 05:25:40,396 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 05:25:40,397 INFO L299 CfgBuilder]: Removed 41 assume(true) statements. [2022-07-23 05:25:40,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:25:40 BoogieIcfgContainer [2022-07-23 05:25:40,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 05:25:40,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 05:25:40,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 05:25:40,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 05:25:40,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 05:25:38" (1/3) ... [2022-07-23 05:25:40,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b071578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 05:25:40, skipping insertion in model container [2022-07-23 05:25:40,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:39" (2/3) ... [2022-07-23 05:25:40,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b071578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 05:25:40, skipping insertion in model container [2022-07-23 05:25:40,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:25:40" (3/3) ... [2022-07-23 05:25:40,409 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-2.i [2022-07-23 05:25:40,422 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 05:25:40,422 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2022-07-23 05:25:40,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 05:25:40,472 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@fbe683e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5a104176 [2022-07-23 05:25:40,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2022-07-23 05:25:40,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 117 states have (on average 2.1623931623931623) internal successors, (253), 206 states have internal predecessors, (253), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-23 05:25:40,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-23 05:25:40,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:40,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-23 05:25:40,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:25:40,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:40,489 INFO L85 PathProgramCache]: Analyzing trace with hash 378924727, now seen corresponding path program 1 times [2022-07-23 05:25:40,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:25:40,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611051939] [2022-07-23 05:25:40,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:40,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:25:40,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:25:40,507 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) [2022-07-23 05:25:40,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-23 05:25:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:40,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-23 05:25:40,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:40,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:40,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:25:40,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:25:40,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611051939] [2022-07-23 05:25:40,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611051939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:40,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:40,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 05:25:40,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829046772] [2022-07-23 05:25:40,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:40,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-23 05:25:40,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:25:40,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-23 05:25:40,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 05:25:40,673 INFO L87 Difference]: Start difference. First operand has 216 states, 117 states have (on average 2.1623931623931623) internal successors, (253), 206 states have internal predecessors, (253), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:40,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:40,709 INFO L93 Difference]: Finished difference Result 212 states and 234 transitions. [2022-07-23 05:25:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 05:25:40,712 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-23 05:25:40,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:40,720 INFO L225 Difference]: With dead ends: 212 [2022-07-23 05:25:40,720 INFO L226 Difference]: Without dead ends: 210 [2022-07-23 05:25:40,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 05:25:40,726 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:40,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:25:40,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-23 05:25:40,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-07-23 05:25:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 115 states have (on average 1.7826086956521738) internal successors, (205), 199 states have internal predecessors, (205), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-23 05:25:40,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 232 transitions. [2022-07-23 05:25:40,792 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 232 transitions. Word has length 5 [2022-07-23 05:25:40,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:40,793 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 232 transitions. [2022-07-23 05:25:40,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:40,793 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 232 transitions. [2022-07-23 05:25:40,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-23 05:25:40,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:40,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-23 05:25:40,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-23 05:25:41,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:25:41,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:25:41,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:41,004 INFO L85 PathProgramCache]: Analyzing trace with hash 378924789, now seen corresponding path program 1 times [2022-07-23 05:25:41,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:25:41,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295612410] [2022-07-23 05:25:41,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:41,005 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:25:41,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:25:41,007 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) [2022-07-23 05:25:41,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-23 05:25:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:41,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 05:25:41,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:41,108 INFO L390 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 [2022-07-23 05:25:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:41,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:25:41,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:25:41,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295612410] [2022-07-23 05:25:41,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295612410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:41,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:41,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 05:25:41,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79331368] [2022-07-23 05:25:41,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:41,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:25:41,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:25:41,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:25:41,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:25:41,125 INFO L87 Difference]: Start difference. First operand 210 states and 232 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:41,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:41,362 INFO L93 Difference]: Finished difference Result 229 states and 251 transitions. [2022-07-23 05:25:41,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:25:41,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-23 05:25:41,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:41,364 INFO L225 Difference]: With dead ends: 229 [2022-07-23 05:25:41,365 INFO L226 Difference]: Without dead ends: 229 [2022-07-23 05:25:41,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:25:41,366 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 69 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:41,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 314 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:25:41,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-23 05:25:41,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 207. [2022-07-23 05:25:41,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 115 states have (on average 1.7565217391304349) internal successors, (202), 196 states have internal predecessors, (202), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-23 05:25:41,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 229 transitions. [2022-07-23 05:25:41,378 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 229 transitions. Word has length 5 [2022-07-23 05:25:41,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:41,379 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 229 transitions. [2022-07-23 05:25:41,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:41,379 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 229 transitions. [2022-07-23 05:25:41,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-23 05:25:41,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:41,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-23 05:25:41,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-23 05:25:41,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:25:41,589 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:25:41,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:41,590 INFO L85 PathProgramCache]: Analyzing trace with hash 378924790, now seen corresponding path program 1 times [2022-07-23 05:25:41,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:25:41,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278138717] [2022-07-23 05:25:41,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:41,591 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:25:41,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:25:41,593 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) [2022-07-23 05:25:41,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-23 05:25:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:41,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 05:25:41,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:41,677 INFO L390 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 [2022-07-23 05:25:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:41,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:25:41,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:25:41,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278138717] [2022-07-23 05:25:41,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278138717] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:41,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:41,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 05:25:41,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514268556] [2022-07-23 05:25:41,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:41,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:25:41,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:25:41,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:25:41,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:25:41,699 INFO L87 Difference]: Start difference. First operand 207 states and 229 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:41,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:41,964 INFO L93 Difference]: Finished difference Result 205 states and 227 transitions. [2022-07-23 05:25:41,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:25:41,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-23 05:25:41,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:41,966 INFO L225 Difference]: With dead ends: 205 [2022-07-23 05:25:41,966 INFO L226 Difference]: Without dead ends: 205 [2022-07-23 05:25:41,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:25:41,967 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 67 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:41,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 306 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 05:25:41,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-23 05:25:41,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2022-07-23 05:25:41,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 115 states have (on average 1.7304347826086957) internal successors, (199), 193 states have internal predecessors, (199), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-23 05:25:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 226 transitions. [2022-07-23 05:25:41,976 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 226 transitions. Word has length 5 [2022-07-23 05:25:41,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:41,976 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 226 transitions. [2022-07-23 05:25:41,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:41,976 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 226 transitions. [2022-07-23 05:25:41,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 05:25:41,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:41,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:41,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-23 05:25:42,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:25:42,187 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:25:42,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:42,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1374843154, now seen corresponding path program 1 times [2022-07-23 05:25:42,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:25:42,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674898066] [2022-07-23 05:25:42,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:42,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:25:42,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:25:42,190 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) [2022-07-23 05:25:42,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-23 05:25:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:42,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 05:25:42,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:42,334 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-23 05:25:42,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2022-07-23 05:25:42,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:42,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:25:42,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:25:42,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674898066] [2022-07-23 05:25:42,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674898066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:42,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:42,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:25:42,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102967795] [2022-07-23 05:25:42,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:42,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 05:25:42,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:25:42,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 05:25:42,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:25:42,389 INFO L87 Difference]: Start difference. First operand 204 states and 226 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:42,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:42,834 INFO L93 Difference]: Finished difference Result 241 states and 262 transitions. [2022-07-23 05:25:42,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 05:25:42,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-23 05:25:42,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:42,836 INFO L225 Difference]: With dead ends: 241 [2022-07-23 05:25:42,836 INFO L226 Difference]: Without dead ends: 241 [2022-07-23 05:25:42,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:25:42,837 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 269 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:42,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 399 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 05:25:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-07-23 05:25:42,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 218. [2022-07-23 05:25:42,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 129 states have (on average 1.751937984496124) internal successors, (226), 206 states have internal predecessors, (226), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-23 05:25:42,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 253 transitions. [2022-07-23 05:25:42,848 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 253 transitions. Word has length 8 [2022-07-23 05:25:42,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:42,848 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 253 transitions. [2022-07-23 05:25:42,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:42,849 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 253 transitions. [2022-07-23 05:25:42,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 05:25:42,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:42,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:42,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-23 05:25:43,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:25:43,050 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:25:43,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:43,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1374843155, now seen corresponding path program 1 times [2022-07-23 05:25:43,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:25:43,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463129608] [2022-07-23 05:25:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:43,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:25:43,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:25:43,052 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) [2022-07-23 05:25:43,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-23 05:25:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:43,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 05:25:43,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:43,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:25:43,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-23 05:25:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:43,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:25:43,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:25:43,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463129608] [2022-07-23 05:25:43,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463129608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:43,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:43,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:25:43,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131017590] [2022-07-23 05:25:43,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:43,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 05:25:43,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:25:43,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 05:25:43,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-23 05:25:43,293 INFO L87 Difference]: Start difference. First operand 218 states and 253 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:43,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:43,881 INFO L93 Difference]: Finished difference Result 222 states and 246 transitions. [2022-07-23 05:25:43,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 05:25:43,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-23 05:25:43,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:43,883 INFO L225 Difference]: With dead ends: 222 [2022-07-23 05:25:43,883 INFO L226 Difference]: Without dead ends: 222 [2022-07-23 05:25:43,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:25:43,884 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 267 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:43,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 310 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 05:25:43,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-23 05:25:43,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 210. [2022-07-23 05:25:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 125 states have (on average 1.696) internal successors, (212), 198 states have internal predecessors, (212), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-23 05:25:43,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 239 transitions. [2022-07-23 05:25:43,889 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 239 transitions. Word has length 8 [2022-07-23 05:25:43,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:43,889 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 239 transitions. [2022-07-23 05:25:43,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:43,890 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 239 transitions. [2022-07-23 05:25:43,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-23 05:25:43,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:43,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:43,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-23 05:25:44,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:25:44,101 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:25:44,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:44,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1625645901, now seen corresponding path program 1 times [2022-07-23 05:25:44,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:25:44,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956899371] [2022-07-23 05:25:44,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:44,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:25:44,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:25:44,103 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) [2022-07-23 05:25:44,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-23 05:25:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:44,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-23 05:25:44,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:44,258 INFO L356 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-07-23 05:25:44,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 15 [2022-07-23 05:25:44,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:25:44,374 INFO L390 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 15 treesize of output 7 [2022-07-23 05:25:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:44,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:25:44,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:25:44,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956899371] [2022-07-23 05:25:44,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956899371] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:44,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:44,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 05:25:44,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762017867] [2022-07-23 05:25:44,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:44,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 05:25:44,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:25:44,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 05:25:44,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-23 05:25:44,408 INFO L87 Difference]: Start difference. First operand 210 states and 239 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:45,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:45,015 INFO L93 Difference]: Finished difference Result 231 states and 260 transitions. [2022-07-23 05:25:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 05:25:45,016 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-23 05:25:45,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:45,018 INFO L225 Difference]: With dead ends: 231 [2022-07-23 05:25:45,018 INFO L226 Difference]: Without dead ends: 231 [2022-07-23 05:25:45,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-23 05:25:45,019 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 41 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:45,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1039 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 05:25:45,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-07-23 05:25:45,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 224. [2022-07-23 05:25:45,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 137 states have (on average 1.686131386861314) internal successors, (231), 211 states have internal predecessors, (231), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-23 05:25:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 260 transitions. [2022-07-23 05:25:45,024 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 260 transitions. Word has length 10 [2022-07-23 05:25:45,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:45,024 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 260 transitions. [2022-07-23 05:25:45,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:45,025 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 260 transitions. [2022-07-23 05:25:45,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-23 05:25:45,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:45,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:45,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-23 05:25:45,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:25:45,235 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:25:45,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:45,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1625645900, now seen corresponding path program 1 times [2022-07-23 05:25:45,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:25:45,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242445887] [2022-07-23 05:25:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:45,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:25:45,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:25:45,238 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) [2022-07-23 05:25:45,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-23 05:25:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:45,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-23 05:25:45,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:45,423 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-23 05:25:45,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-07-23 05:25:45,440 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:25:45,440 INFO L390 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 12 treesize of output 12 [2022-07-23 05:25:45,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:25:45,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:25:45,612 INFO L390 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 15 treesize of output 7 [2022-07-23 05:25:45,626 INFO L390 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 15 treesize of output 7 [2022-07-23 05:25:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:45,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:25:45,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:25:45,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242445887] [2022-07-23 05:25:45,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242445887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:45,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:45,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 05:25:45,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293398639] [2022-07-23 05:25:45,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:45,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 05:25:45,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:25:45,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 05:25:45,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-23 05:25:45,673 INFO L87 Difference]: Start difference. First operand 224 states and 260 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:46,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:46,504 INFO L93 Difference]: Finished difference Result 230 states and 259 transitions. [2022-07-23 05:25:46,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 05:25:46,505 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-23 05:25:46,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:46,506 INFO L225 Difference]: With dead ends: 230 [2022-07-23 05:25:46,506 INFO L226 Difference]: Without dead ends: 230 [2022-07-23 05:25:46,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-23 05:25:46,507 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 47 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:46,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 971 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-23 05:25:46,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-07-23 05:25:46,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2022-07-23 05:25:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 137 states have (on average 1.6788321167883211) internal successors, (230), 211 states have internal predecessors, (230), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-23 05:25:46,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 259 transitions. [2022-07-23 05:25:46,518 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 259 transitions. Word has length 10 [2022-07-23 05:25:46,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:46,518 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 259 transitions. [2022-07-23 05:25:46,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:46,518 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 259 transitions. [2022-07-23 05:25:46,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-23 05:25:46,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:46,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:46,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-07-23 05:25:46,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:25:46,728 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:25:46,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:46,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1144584946, now seen corresponding path program 1 times [2022-07-23 05:25:46,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:25:46,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810973662] [2022-07-23 05:25:46,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:46,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:25:46,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:25:46,732 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) [2022-07-23 05:25:46,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-23 05:25:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:46,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 05:25:46,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:46,825 INFO L390 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 [2022-07-23 05:25:46,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:46,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:25:46,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:25:46,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810973662] [2022-07-23 05:25:46,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810973662] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:46,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:46,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 05:25:46,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707153992] [2022-07-23 05:25:46,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:46,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 05:25:46,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:25:46,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 05:25:46,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 05:25:46,860 INFO L87 Difference]: Start difference. First operand 224 states and 259 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:47,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:47,342 INFO L93 Difference]: Finished difference Result 245 states and 270 transitions. [2022-07-23 05:25:47,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 05:25:47,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-23 05:25:47,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:47,344 INFO L225 Difference]: With dead ends: 245 [2022-07-23 05:25:47,344 INFO L226 Difference]: Without dead ends: 245 [2022-07-23 05:25:47,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:25:47,345 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 105 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:47,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 703 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 05:25:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-07-23 05:25:47,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 223. [2022-07-23 05:25:47,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 137 states have (on average 1.6423357664233578) internal successors, (225), 210 states have internal predecessors, (225), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-23 05:25:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 254 transitions. [2022-07-23 05:25:47,351 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 254 transitions. Word has length 11 [2022-07-23 05:25:47,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:47,351 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 254 transitions. [2022-07-23 05:25:47,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:47,352 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 254 transitions. [2022-07-23 05:25:47,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-23 05:25:47,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:47,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:47,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-23 05:25:47,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:25:47,563 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:25:47,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:47,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1144584947, now seen corresponding path program 1 times [2022-07-23 05:25:47,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:25:47,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610541949] [2022-07-23 05:25:47,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:47,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:25:47,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:25:47,565 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) [2022-07-23 05:25:47,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-23 05:25:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:47,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-23 05:25:47,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:47,648 INFO L390 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 [2022-07-23 05:25:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:47,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:25:47,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:25:47,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610541949] [2022-07-23 05:25:47,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610541949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:47,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:47,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 05:25:47,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152787428] [2022-07-23 05:25:47,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:47,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 05:25:47,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:25:47,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 05:25:47,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 05:25:47,726 INFO L87 Difference]: Start difference. First operand 223 states and 254 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:48,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:48,302 INFO L93 Difference]: Finished difference Result 227 states and 250 transitions. [2022-07-23 05:25:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 05:25:48,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-23 05:25:48,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:48,305 INFO L225 Difference]: With dead ends: 227 [2022-07-23 05:25:48,305 INFO L226 Difference]: Without dead ends: 227 [2022-07-23 05:25:48,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:25:48,306 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 94 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:48,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 719 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 05:25:48,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-07-23 05:25:48,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2022-07-23 05:25:48,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 137 states have (on average 1.6131386861313868) internal successors, (221), 210 states have internal predecessors, (221), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-23 05:25:48,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 250 transitions. [2022-07-23 05:25:48,312 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 250 transitions. Word has length 11 [2022-07-23 05:25:48,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:48,313 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 250 transitions. [2022-07-23 05:25:48,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:48,317 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 250 transitions. [2022-07-23 05:25:48,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-23 05:25:48,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:48,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:48,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-23 05:25:48,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:25:48,532 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting list_addErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:25:48,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:48,532 INFO L85 PathProgramCache]: Analyzing trace with hash 434515829, now seen corresponding path program 1 times [2022-07-23 05:25:48,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:25:48,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129806670] [2022-07-23 05:25:48,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:48,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:25:48,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:25:48,534 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) [2022-07-23 05:25:48,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-23 05:25:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:48,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 05:25:48,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:48,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:48,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:25:48,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:25:48,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129806670] [2022-07-23 05:25:48,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129806670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:48,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:48,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:25:48,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276533904] [2022-07-23 05:25:48,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:48,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:25:48,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:25:48,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:25:48,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:25:48,626 INFO L87 Difference]: Start difference. First operand 223 states and 250 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:48,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:48,878 INFO L93 Difference]: Finished difference Result 222 states and 247 transitions. [2022-07-23 05:25:48,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 05:25:48,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-23 05:25:48,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:48,879 INFO L225 Difference]: With dead ends: 222 [2022-07-23 05:25:48,879 INFO L226 Difference]: Without dead ends: 222 [2022-07-23 05:25:48,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:25:48,880 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 22 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:48,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 499 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:25:48,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-23 05:25:48,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-07-23 05:25:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 137 states have (on average 1.5912408759124088) internal successors, (218), 209 states have internal predecessors, (218), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-23 05:25:48,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 247 transitions. [2022-07-23 05:25:48,888 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 247 transitions. Word has length 13 [2022-07-23 05:25:48,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:48,888 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 247 transitions. [2022-07-23 05:25:48,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:48,889 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 247 transitions. [2022-07-23 05:25:48,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-23 05:25:48,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:48,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:48,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-23 05:25:49,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:25:49,100 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting list_addErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:25:49,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:49,100 INFO L85 PathProgramCache]: Analyzing trace with hash 434515830, now seen corresponding path program 1 times [2022-07-23 05:25:49,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:25:49,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197340190] [2022-07-23 05:25:49,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:49,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:25:49,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:25:49,102 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:25:49,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-23 05:25:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:49,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 05:25:49,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:49,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:49,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:25:49,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:25:49,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197340190] [2022-07-23 05:25:49,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197340190] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:49,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:49,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 05:25:49,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743607987] [2022-07-23 05:25:49,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:49,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 05:25:49,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:25:49,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 05:25:49,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:25:49,266 INFO L87 Difference]: Start difference. First operand 222 states and 247 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:49,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:49,728 INFO L93 Difference]: Finished difference Result 224 states and 245 transitions. [2022-07-23 05:25:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 05:25:49,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-23 05:25:49,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:49,730 INFO L225 Difference]: With dead ends: 224 [2022-07-23 05:25:49,730 INFO L226 Difference]: Without dead ends: 224 [2022-07-23 05:25:49,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-23 05:25:49,731 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 250 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:49,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 917 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 05:25:49,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-07-23 05:25:49,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2022-07-23 05:25:49,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 137 states have (on average 1.5766423357664234) internal successors, (216), 209 states have internal predecessors, (216), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-23 05:25:49,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 245 transitions. [2022-07-23 05:25:49,737 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 245 transitions. Word has length 13 [2022-07-23 05:25:49,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:49,737 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 245 transitions. [2022-07-23 05:25:49,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:49,737 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 245 transitions. [2022-07-23 05:25:49,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-23 05:25:49,738 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:49,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:49,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-23 05:25:49,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:25:49,950 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:25:49,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:49,950 INFO L85 PathProgramCache]: Analyzing trace with hash 853908818, now seen corresponding path program 1 times [2022-07-23 05:25:49,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:25:49,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848946055] [2022-07-23 05:25:49,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:49,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:25:49,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:25:49,952 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:25:49,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-23 05:25:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:50,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 05:25:50,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:50,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:50,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:25:50,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:25:50,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848946055] [2022-07-23 05:25:50,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848946055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:50,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:50,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:25:50,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057253820] [2022-07-23 05:25:50,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:50,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 05:25:50,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:25:50,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 05:25:50,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:25:50,106 INFO L87 Difference]: Start difference. First operand 222 states and 245 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:25:50,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:50,249 INFO L93 Difference]: Finished difference Result 221 states and 243 transitions. [2022-07-23 05:25:50,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 05:25:50,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 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 27 [2022-07-23 05:25:50,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:50,251 INFO L225 Difference]: With dead ends: 221 [2022-07-23 05:25:50,251 INFO L226 Difference]: Without dead ends: 221 [2022-07-23 05:25:50,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:25:50,252 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 297 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:50,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 453 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:25:50,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-07-23 05:25:50,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2022-07-23 05:25:50,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 137 states have (on average 1.5693430656934306) internal successors, (215), 208 states have internal predecessors, (215), 21 states have call successors, (21), 6 states have call predecessors, (21), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-23 05:25:50,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 243 transitions. [2022-07-23 05:25:50,258 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 243 transitions. Word has length 27 [2022-07-23 05:25:50,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:50,258 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 243 transitions. [2022-07-23 05:25:50,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:25:50,258 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 243 transitions. [2022-07-23 05:25:50,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-23 05:25:50,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:50,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:50,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-23 05:25:50,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:25:50,469 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting inspectErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:25:50,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:50,470 INFO L85 PathProgramCache]: Analyzing trace with hash 853896473, now seen corresponding path program 1 times [2022-07-23 05:25:50,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:25:50,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044384876] [2022-07-23 05:25:50,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:50,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:25:50,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:25:50,471 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:25:50,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-23 05:25:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:50,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 05:25:50,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:50,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:50,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:25:50,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:25:50,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044384876] [2022-07-23 05:25:50,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044384876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:50,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:50,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 05:25:50,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475598509] [2022-07-23 05:25:50,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:50,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 05:25:50,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:25:50,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 05:25:50,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:25:50,634 INFO L87 Difference]: Start difference. First operand 221 states and 243 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:25:51,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:51,222 INFO L93 Difference]: Finished difference Result 216 states and 238 transitions. [2022-07-23 05:25:51,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 05:25:51,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-07-23 05:25:51,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:51,224 INFO L225 Difference]: With dead ends: 216 [2022-07-23 05:25:51,224 INFO L226 Difference]: Without dead ends: 216 [2022-07-23 05:25:51,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-23 05:25:51,225 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 381 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:51,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 424 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 05:25:51,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-23 05:25:51,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-07-23 05:25:51,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 137 states have (on average 1.532846715328467) internal successors, (210), 203 states have internal predecessors, (210), 21 states have call successors, (21), 6 states have call predecessors, (21), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-23 05:25:51,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 238 transitions. [2022-07-23 05:25:51,231 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 238 transitions. Word has length 27 [2022-07-23 05:25:51,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:51,231 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 238 transitions. [2022-07-23 05:25:51,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:25:51,232 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 238 transitions. [2022-07-23 05:25:51,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-23 05:25:51,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:51,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:51,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-23 05:25:51,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:25:51,443 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting inspectErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:25:51,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:51,443 INFO L85 PathProgramCache]: Analyzing trace with hash 853896474, now seen corresponding path program 1 times [2022-07-23 05:25:51,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:25:51,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112391738] [2022-07-23 05:25:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:51,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:25:51,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:25:51,445 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:25:51,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-23 05:25:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:51,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 05:25:51,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:51,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:25:51,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:25:51,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112391738] [2022-07-23 05:25:51,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112391738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:51,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:51,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 05:25:51,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083009179] [2022-07-23 05:25:51,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:51,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 05:25:51,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:25:51,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 05:25:51,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:25:51,758 INFO L87 Difference]: Start difference. First operand 216 states and 238 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:25:52,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:52,628 INFO L93 Difference]: Finished difference Result 215 states and 237 transitions. [2022-07-23 05:25:52,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 05:25:52,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-07-23 05:25:52,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:52,630 INFO L225 Difference]: With dead ends: 215 [2022-07-23 05:25:52,630 INFO L226 Difference]: Without dead ends: 215 [2022-07-23 05:25:52,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-07-23 05:25:52,631 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 492 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:52,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 480 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-23 05:25:52,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-07-23 05:25:52,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2022-07-23 05:25:52,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 137 states have (on average 1.5255474452554745) internal successors, (209), 202 states have internal predecessors, (209), 21 states have call successors, (21), 6 states have call predecessors, (21), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-23 05:25:52,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 237 transitions. [2022-07-23 05:25:52,636 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 237 transitions. Word has length 27 [2022-07-23 05:25:52,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:52,637 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 237 transitions. [2022-07-23 05:25:52,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:25:52,637 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 237 transitions. [2022-07-23 05:25:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-23 05:25:52,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:52,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:52,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-23 05:25:52,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:25:52,843 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:25:52,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:52,844 INFO L85 PathProgramCache]: Analyzing trace with hash -661448180, now seen corresponding path program 1 times [2022-07-23 05:25:52,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:25:52,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070405737] [2022-07-23 05:25:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:52,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:25:52,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:25:52,845 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:25:52,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-23 05:25:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:53,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-23 05:25:53,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:53,044 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:25:53,044 INFO L390 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 12 treesize of output 12 [2022-07-23 05:25:53,164 INFO L390 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 11 treesize of output 7 [2022-07-23 05:25:53,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:25:53,239 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:25:53,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-07-23 05:25:53,322 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:25:53,323 INFO L390 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2022-07-23 05:25:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:53,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:25:53,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:25:53,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070405737] [2022-07-23 05:25:53,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070405737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:53,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:53,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-23 05:25:53,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325827402] [2022-07-23 05:25:53,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:53,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-23 05:25:53,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:25:53,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-23 05:25:53,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-23 05:25:53,342 INFO L87 Difference]: Start difference. First operand 215 states and 237 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:25:54,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:54,722 INFO L93 Difference]: Finished difference Result 360 states and 397 transitions. [2022-07-23 05:25:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-23 05:25:54,722 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (3), 3 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 30 [2022-07-23 05:25:54,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:54,724 INFO L225 Difference]: With dead ends: 360 [2022-07-23 05:25:54,724 INFO L226 Difference]: Without dead ends: 360 [2022-07-23 05:25:54,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-07-23 05:25:54,725 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 986 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:54,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 991 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-23 05:25:54,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-07-23 05:25:54,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 294. [2022-07-23 05:25:54,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 211 states have (on average 1.5545023696682465) internal successors, (328), 277 states have internal predecessors, (328), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-23 05:25:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 362 transitions. [2022-07-23 05:25:54,734 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 362 transitions. Word has length 30 [2022-07-23 05:25:54,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:54,734 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 362 transitions. [2022-07-23 05:25:54,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:25:54,735 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 362 transitions. [2022-07-23 05:25:54,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-23 05:25:54,735 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:54,736 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:54,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-23 05:25:54,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:25:54,946 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:25:54,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:54,947 INFO L85 PathProgramCache]: Analyzing trace with hash -662300209, now seen corresponding path program 1 times [2022-07-23 05:25:54,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:25:54,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123401125] [2022-07-23 05:25:54,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:54,947 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:25:54,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:25:54,949 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:25:54,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-23 05:25:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:55,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-23 05:25:55,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:55,240 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-23 05:25:55,241 INFO L390 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 18 treesize of output 25 [2022-07-23 05:25:55,582 INFO L390 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 11 treesize of output 7 [2022-07-23 05:25:55,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:25:55,768 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:25:55,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-07-23 05:25:55,871 INFO L356 Elim1Store]: treesize reduction 42, result has 44.0 percent of original size [2022-07-23 05:25:55,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 54 [2022-07-23 05:25:55,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 33 [2022-07-23 05:25:56,123 INFO L390 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 36 treesize of output 20 [2022-07-23 05:25:56,217 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:56,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:25:56,394 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_16| (_ BitVec 32))) (or (= (_ bv1 1) (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_16| (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_16| v_ArrVal_493) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (not (= (bvneg (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_16|)) (_ bv0 1))))) is different from false [2022-07-23 05:25:56,427 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_16| (_ BitVec 32)) (v_ArrVal_491 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (bvneg (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_16|)) (_ bv0 1))) (= (_ bv1 1) (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_16| (_ bv1 1)) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_491) |v_ULTIMATE.start_gl_insert_~node~1#1.base_16| v_ArrVal_493) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) is different from false [2022-07-23 05:25:56,623 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:25:56,623 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-07-23 05:25:56,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:25:56,632 INFO L390 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 40 treesize of output 32 [2022-07-23 05:25:56,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-07-23 05:26:02,808 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 37 DAG size of output: 34 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-23 05:26:02,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:26:02,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123401125] [2022-07-23 05:26:02,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123401125] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 05:26:02,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [416448608] [2022-07-23 05:26:02,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:26:02,810 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-23 05:26:02,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-23 05:26:02,815 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-23 05:26:02,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-07-23 05:26:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:26:03,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-23 05:26:03,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:26:03,409 INFO L356 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2022-07-23 05:26:03,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 40 [2022-07-23 05:26:03,987 INFO L390 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 11 treesize of output 7 [2022-07-23 05:26:04,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-23 05:26:04,293 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:26:04,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-07-23 05:26:04,441 INFO L356 Elim1Store]: treesize reduction 57, result has 44.1 percent of original size [2022-07-23 05:26:04,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 71 [2022-07-23 05:26:04,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-07-23 05:26:04,717 INFO L390 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 35 treesize of output 19 [2022-07-23 05:26:04,821 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:26:04,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:26:04,907 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_gl_insert_~node~1#1.base_19| (_ BitVec 32)) (v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_571 (_ BitVec 1))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_19|)))) (= (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_19| v_ArrVal_571) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_19| v_ArrVal_493) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (_ bv1 1)))) is different from false [2022-07-23 05:26:04,942 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_gl_insert_~node~1#1.base_19| (_ BitVec 32)) (v_ArrVal_570 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_571 (_ BitVec 1))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_19|)))) (= (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_19| v_ArrVal_571) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_570) |v_ULTIMATE.start_gl_insert_~node~1#1.base_19| v_ArrVal_493) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (_ bv1 1)))) is different from false [2022-07-23 05:26:05,116 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:26:05,116 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-07-23 05:26:05,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:26:05,126 INFO L390 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 40 treesize of output 32 [2022-07-23 05:26:05,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-07-23 05:26:07,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [416448608] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 05:26:07,325 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:26:07,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 29 [2022-07-23 05:26:07,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508593276] [2022-07-23 05:26:07,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:26:07,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-23 05:26:07,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:26:07,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-23 05:26:07,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1293, Unknown=7, NotChecked=308, Total=1806 [2022-07-23 05:26:07,329 INFO L87 Difference]: Start difference. First operand 294 states and 362 transitions. Second operand has 31 states, 29 states have (on average 1.793103448275862) internal successors, (52), 26 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 05:26:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:26:08,435 INFO L93 Difference]: Finished difference Result 334 states and 398 transitions. [2022-07-23 05:26:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-23 05:26:08,436 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 1.793103448275862) internal successors, (52), 26 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-07-23 05:26:08,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:26:08,438 INFO L225 Difference]: With dead ends: 334 [2022-07-23 05:26:08,438 INFO L226 Difference]: Without dead ends: 334 [2022-07-23 05:26:08,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=290, Invalid=1699, Unknown=7, NotChecked=356, Total=2352 [2022-07-23 05:26:08,440 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 176 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 674 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 05:26:08,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1989 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 486 Invalid, 0 Unknown, 674 Unchecked, 0.7s Time] [2022-07-23 05:26:08,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-23 05:26:08,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 294. [2022-07-23 05:26:08,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 211 states have (on average 1.5497630331753554) internal successors, (327), 277 states have internal predecessors, (327), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-23 05:26:08,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 361 transitions. [2022-07-23 05:26:08,448 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 361 transitions. Word has length 29 [2022-07-23 05:26:08,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:26:08,448 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 361 transitions. [2022-07-23 05:26:08,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 1.793103448275862) internal successors, (52), 26 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 05:26:08,449 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 361 transitions. [2022-07-23 05:26:08,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-23 05:26:08,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:26:08,450 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:26:08,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-23 05:26:08,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-07-23 05:26:08,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-23 05:26:08,862 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:26:08,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:26:08,862 INFO L85 PathProgramCache]: Analyzing trace with hash -662300208, now seen corresponding path program 1 times [2022-07-23 05:26:08,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:26:08,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721850928] [2022-07-23 05:26:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:26:08,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:26:08,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:26:08,864 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:26:08,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-23 05:26:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:26:09,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 53 conjunts are in the unsatisfiable core [2022-07-23 05:26:09,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:26:09,178 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:26:09,179 INFO L390 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 12 treesize of output 12 [2022-07-23 05:26:09,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 05:26:09,461 INFO L390 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 11 treesize of output 7 [2022-07-23 05:26:09,467 INFO L390 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 11 treesize of output 7 [2022-07-23 05:26:09,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:26:09,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:26:09,636 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:26:09,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-07-23 05:26:09,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 [2022-07-23 05:26:09,717 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:26:09,717 INFO L390 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 14 treesize of output 14 [2022-07-23 05:26:09,733 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-23 05:26:09,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-07-23 05:26:09,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 24 [2022-07-23 05:26:09,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:26:09,939 INFO L390 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 25 treesize of output 13 [2022-07-23 05:26:09,942 INFO L390 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 15 treesize of output 7 [2022-07-23 05:26:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:26:09,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:26:10,324 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_655 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_656 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_656) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_655) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))) (forall ((v_ArrVal_656 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_656) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0))))) is different from false [2022-07-23 05:26:15,386 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_652 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_653 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_22| (_ BitVec 32))) (or (forall ((v_ArrVal_655 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_656 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_653) |v_ULTIMATE.start_gl_insert_~node~1#1.base_22| v_ArrVal_656) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv8 32)) (select (store |c_#length| |v_ULTIMATE.start_gl_insert_~node~1#1.base_22| (_ bv20 32)) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_652) |v_ULTIMATE.start_gl_insert_~node~1#1.base_22| v_ArrVal_655) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_22|)))))) (forall ((v_ArrVal_653 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_22| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_22|)))) (forall ((v_ArrVal_656 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_653) |v_ULTIMATE.start_gl_insert_~node~1#1.base_22| v_ArrVal_656) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd .cse0 (_ bv8 32)))))))) is different from false [2022-07-23 05:26:15,786 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:26:15,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 137 [2022-07-23 05:26:15,801 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:26:15,802 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 109 [2022-07-23 05:26:15,821 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:26:15,821 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 99 [2022-07-23 05:26:15,831 INFO L390 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 188 treesize of output 180 [2022-07-23 05:26:15,842 INFO L390 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 444 treesize of output 424 [2022-07-23 05:26:15,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 417 treesize of output 409 [2022-07-23 05:26:15,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 409 treesize of output 393 [2022-07-23 05:26:15,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 393 treesize of output 377 [2022-07-23 05:26:15,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 377 treesize of output 369 [2022-07-23 05:26:15,917 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:26:15,917 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 369 treesize of output 360 [2022-07-23 05:26:15,929 INFO L390 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 410 treesize of output 398 [2022-07-23 05:26:15,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 391 treesize of output 383 [2022-07-23 05:26:15,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 383 treesize of output 379 [2022-07-23 05:26:16,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:26:16,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721850928] [2022-07-23 05:26:16,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721850928] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 05:26:16,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1652121047] [2022-07-23 05:26:16,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:26:16,622 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-23 05:26:16,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-23 05:26:16,623 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-23 05:26:16,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-07-23 05:26:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:26:17,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 57 conjunts are in the unsatisfiable core [2022-07-23 05:26:17,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:26:17,231 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-23 05:26:17,231 INFO L390 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 18 treesize of output 25 [2022-07-23 05:26:17,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 05:26:17,886 INFO L390 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 11 treesize of output 7 [2022-07-23 05:26:17,895 INFO L390 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 11 treesize of output 7 [2022-07-23 05:26:18,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:26:18,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:26:18,249 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:26:18,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 46 [2022-07-23 05:26:18,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 [2022-07-23 05:26:18,402 INFO L356 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-07-23 05:26:18,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 29 [2022-07-23 05:26:18,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-23 05:26:18,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 30 [2022-07-23 05:26:18,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-23 05:26:18,760 INFO L390 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 25 treesize of output 13 [2022-07-23 05:26:18,766 INFO L390 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 15 treesize of output 7 [2022-07-23 05:26:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:26:18,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:26:18,855 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_745 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_745) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_744 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_745 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_745) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_744) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) is different from false [2022-07-23 05:26:25,725 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_741 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_742 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_25| (_ BitVec 32))) (or (forall ((v_ArrVal_743 (_ BitVec 32)) (v_ArrVal_744 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_745 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_741) |v_ULTIMATE.start_gl_insert_~node~1#1.base_25| v_ArrVal_745) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select (store |c_#length| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25| v_ArrVal_743) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_742) |v_ULTIMATE.start_gl_insert_~node~1#1.base_25| v_ArrVal_744) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))) (not (= (bvneg (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25|)) (_ bv0 1))))) (forall ((v_ArrVal_741 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_25| (_ BitVec 32))) (or (forall ((v_ArrVal_745 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_741) |v_ULTIMATE.start_gl_insert_~node~1#1.base_25| v_ArrVal_745) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (not (= (bvneg (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25|)) (_ bv0 1)))))) is different from false [2022-07-23 05:26:26,240 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:26:26,240 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 38 [2022-07-23 05:26:26,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:26:26,246 INFO L390 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 46 treesize of output 34 [2022-07-23 05:26:26,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-23 05:26:26,277 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:26:26,277 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2022-07-23 05:26:26,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:26:26,292 INFO L390 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 84 treesize of output 76 [2022-07-23 05:26:26,306 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:26:26,307 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 62 [2022-07-23 05:26:26,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:26:26,313 INFO L390 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 96 treesize of output 84 [2022-07-23 05:26:26,325 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2022-07-23 05:26:26,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 70 [2022-07-23 05:26:38,182 WARN L233 SmtUtils]: Spent 10.97s on a formula simplification. DAG size of input: 64 DAG size of output: 43 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-23 05:26:38,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1652121047] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 05:26:38,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:26:38,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-07-23 05:26:38,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557864081] [2022-07-23 05:26:38,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:26:38,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-23 05:26:38,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:26:38,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-23 05:26:38,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1301, Unknown=19, NotChecked=308, Total=1806 [2022-07-23 05:26:38,185 INFO L87 Difference]: Start difference. First operand 294 states and 361 transitions. Second operand has 30 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 05:26:40,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:26:40,471 INFO L93 Difference]: Finished difference Result 374 states and 411 transitions. [2022-07-23 05:26:40,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-23 05:26:40,472 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-07-23 05:26:40,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:26:40,474 INFO L225 Difference]: With dead ends: 374 [2022-07-23 05:26:40,474 INFO L226 Difference]: Without dead ends: 374 [2022-07-23 05:26:40,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=253, Invalid=1636, Unknown=19, NotChecked=348, Total=2256 [2022-07-23 05:26:40,476 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 448 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 2584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1211 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-23 05:26:40,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1907 Invalid, 2584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1347 Invalid, 0 Unknown, 1211 Unchecked, 1.8s Time] [2022-07-23 05:26:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-07-23 05:26:40,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 280. [2022-07-23 05:26:40,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 199 states have (on average 1.5778894472361809) internal successors, (314), 264 states have internal predecessors, (314), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-23 05:26:40,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 346 transitions. [2022-07-23 05:26:40,484 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 346 transitions. Word has length 29 [2022-07-23 05:26:40,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:26:40,484 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 346 transitions. [2022-07-23 05:26:40,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 05:26:40,485 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 346 transitions. [2022-07-23 05:26:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-23 05:26:40,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:26:40,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:26:40,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-07-23 05:26:40,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-23 05:26:40,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:26:40,892 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting inspectErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:26:40,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:26:40,892 INFO L85 PathProgramCache]: Analyzing trace with hash -661459978, now seen corresponding path program 1 times [2022-07-23 05:26:40,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:26:40,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321512253] [2022-07-23 05:26:40,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:26:40,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:26:40,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:26:40,894 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:26:40,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-23 05:26:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:26:41,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 05:26:41,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:26:41,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:26:41,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-23 05:26:41,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:26:41,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:26:41,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:26:41,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321512253] [2022-07-23 05:26:41,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321512253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:26:41,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:26:41,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:26:41,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531826692] [2022-07-23 05:26:41,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:26:41,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 05:26:41,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:26:41,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 05:26:41,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-23 05:26:41,319 INFO L87 Difference]: Start difference. First operand 280 states and 346 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:26:41,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:26:41,828 INFO L93 Difference]: Finished difference Result 278 states and 342 transitions. [2022-07-23 05:26:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 05:26:41,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-07-23 05:26:41,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:26:41,833 INFO L225 Difference]: With dead ends: 278 [2022-07-23 05:26:41,833 INFO L226 Difference]: Without dead ends: 278 [2022-07-23 05:26:41,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:26:41,834 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 451 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 05:26:41,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 219 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 05:26:41,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-07-23 05:26:41,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-07-23 05:26:41,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 199 states have (on average 1.5577889447236182) internal successors, (310), 262 states have internal predecessors, (310), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-23 05:26:41,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 342 transitions. [2022-07-23 05:26:41,840 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 342 transitions. Word has length 30 [2022-07-23 05:26:41,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:26:41,841 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 342 transitions. [2022-07-23 05:26:41,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:26:41,841 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 342 transitions. [2022-07-23 05:26:41,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-23 05:26:41,841 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:26:41,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:26:41,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-07-23 05:26:42,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:26:42,053 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:26:42,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:26:42,053 INFO L85 PathProgramCache]: Analyzing trace with hash -244243135, now seen corresponding path program 1 times [2022-07-23 05:26:42,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:26:42,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935975232] [2022-07-23 05:26:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:26:42,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:26:42,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:26:42,055 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:26:42,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-23 05:26:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:26:42,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-23 05:26:42,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:26:42,371 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:26:42,371 INFO L390 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 12 treesize of output 12 [2022-07-23 05:26:42,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:26:42,427 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:26:42,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:26:42,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:26:43,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:26:43,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2022-07-23 05:26:43,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:26:43,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 30 [2022-07-23 05:26:43,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:26:43,140 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2022-07-23 05:26:43,144 INFO L390 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 21 treesize of output 13 [2022-07-23 05:26:43,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2022-07-23 05:26:43,229 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:26:43,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2022-07-23 05:26:43,422 INFO L390 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-23 05:26:43,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:26:43,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:26:43,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:26:43,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935975232] [2022-07-23 05:26:43,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935975232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:26:43,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:26:43,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-23 05:26:43,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718108851] [2022-07-23 05:26:43,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:26:43,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-23 05:26:43,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:26:43,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-23 05:26:43,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=223, Unknown=15, NotChecked=0, Total=272 [2022-07-23 05:26:43,464 INFO L87 Difference]: Start difference. First operand 278 states and 342 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:26:46,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:26:46,827 INFO L93 Difference]: Finished difference Result 452 states and 534 transitions. [2022-07-23 05:26:46,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-23 05:26:46,827 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (3), 3 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 33 [2022-07-23 05:26:46,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:26:46,829 INFO L225 Difference]: With dead ends: 452 [2022-07-23 05:26:46,829 INFO L226 Difference]: Without dead ends: 452 [2022-07-23 05:26:46,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=94, Invalid=530, Unknown=26, NotChecked=0, Total=650 [2022-07-23 05:26:46,830 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 399 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 366 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-23 05:26:46,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 1238 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1630 Invalid, 0 Unknown, 366 Unchecked, 2.8s Time] [2022-07-23 05:26:46,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-07-23 05:26:46,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 379. [2022-07-23 05:26:46,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.5273972602739727) internal successors, (446), 356 states have internal predecessors, (446), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-23 05:26:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 488 transitions. [2022-07-23 05:26:46,839 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 488 transitions. Word has length 33 [2022-07-23 05:26:46,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:26:46,839 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 488 transitions. [2022-07-23 05:26:46,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:26:46,840 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 488 transitions. [2022-07-23 05:26:46,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-23 05:26:46,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:26:46,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:26:46,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-07-23 05:26:47,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:26:47,052 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:26:47,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:26:47,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1920035533, now seen corresponding path program 1 times [2022-07-23 05:26:47,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:26:47,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125104935] [2022-07-23 05:26:47,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:26:47,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:26:47,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:26:47,054 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:26:47,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-23 05:26:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:26:47,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-23 05:26:47,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:26:47,307 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:26:47,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 12 [2022-07-23 05:26:47,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-23 05:26:47,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-23 05:26:47,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:26:47,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:26:47,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:26:47,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2022-07-23 05:26:47,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:26:48,013 INFO L356 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2022-07-23 05:26:48,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 38 [2022-07-23 05:26:48,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:26:48,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2022-07-23 05:26:48,028 INFO L390 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 21 treesize of output 13 [2022-07-23 05:26:48,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-23 05:26:48,139 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:26:48,140 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2022-07-23 05:26:48,419 INFO L390 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 24 treesize of output 12 [2022-07-23 05:26:48,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:26:48,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:26:48,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:26:48,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125104935] [2022-07-23 05:26:48,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125104935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:26:48,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:26:48,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-23 05:26:48,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246188621] [2022-07-23 05:26:48,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:26:48,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-23 05:26:48,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:26:48,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-23 05:26:48,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=255, Unknown=15, NotChecked=0, Total=306 [2022-07-23 05:26:48,498 INFO L87 Difference]: Start difference. First operand 379 states and 488 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:26:52,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:26:52,166 INFO L93 Difference]: Finished difference Result 451 states and 532 transitions. [2022-07-23 05:26:52,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-23 05:26:52,167 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 3 states have call successors, (3), 3 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 37 [2022-07-23 05:26:52,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:26:52,171 INFO L225 Difference]: With dead ends: 451 [2022-07-23 05:26:52,171 INFO L226 Difference]: Without dead ends: 451 [2022-07-23 05:26:52,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=104, Invalid=625, Unknown=27, NotChecked=0, Total=756 [2022-07-23 05:26:52,172 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 462 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 1725 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 2325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 555 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-23 05:26:52,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1442 Invalid, 2325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1725 Invalid, 0 Unknown, 555 Unchecked, 2.8s Time] [2022-07-23 05:26:52,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-07-23 05:26:52,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 379. [2022-07-23 05:26:52,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.523972602739726) internal successors, (445), 356 states have internal predecessors, (445), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-23 05:26:52,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 487 transitions. [2022-07-23 05:26:52,181 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 487 transitions. Word has length 37 [2022-07-23 05:26:52,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:26:52,181 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 487 transitions. [2022-07-23 05:26:52,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:26:52,182 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 487 transitions. [2022-07-23 05:26:52,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-23 05:26:52,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:26:52,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:26:52,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-23 05:26:52,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:26:52,393 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting inspectErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:26:52,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:26:52,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1920024890, now seen corresponding path program 1 times [2022-07-23 05:26:52,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:26:52,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200282991] [2022-07-23 05:26:52,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:26:52,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:26:52,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:26:52,395 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:26:52,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-23 05:26:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:26:52,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-23 05:26:52,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:26:52,642 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-23 05:26:52,642 INFO L390 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 18 treesize of output 25 [2022-07-23 05:26:52,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:26:52,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:26:52,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:26:52,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:26:53,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:26:53,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2022-07-23 05:26:53,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:26:53,425 INFO L356 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2022-07-23 05:26:53,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 38 [2022-07-23 05:26:53,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:26:53,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2022-07-23 05:26:53,438 INFO L390 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 21 treesize of output 13 [2022-07-23 05:26:53,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2022-07-23 05:26:53,571 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:26:53,572 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-07-23 05:26:53,953 INFO L390 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 27 treesize of output 15 [2022-07-23 05:26:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:26:54,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:26:54,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:26:54,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200282991] [2022-07-23 05:26:54,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200282991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:26:54,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:26:54,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-23 05:26:54,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158212899] [2022-07-23 05:26:54,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:26:54,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-23 05:26:54,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:26:54,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-23 05:26:54,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=254, Unknown=15, NotChecked=0, Total=306 [2022-07-23 05:26:54,055 INFO L87 Difference]: Start difference. First operand 379 states and 487 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:26:55,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:26:55,544 INFO L93 Difference]: Finished difference Result 448 states and 529 transitions. [2022-07-23 05:26:55,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-23 05:26:55,545 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-07-23 05:26:55,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:26:55,547 INFO L225 Difference]: With dead ends: 448 [2022-07-23 05:26:55,547 INFO L226 Difference]: Without dead ends: 448 [2022-07-23 05:26:55,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=71, Invalid=460, Unknown=21, NotChecked=0, Total=552 [2022-07-23 05:26:55,548 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 351 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 2500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1723 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:26:55,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1248 Invalid, 2500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 749 Invalid, 0 Unknown, 1723 Unchecked, 1.1s Time] [2022-07-23 05:26:55,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-07-23 05:26:55,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 379. [2022-07-23 05:26:55,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.5205479452054795) internal successors, (444), 356 states have internal predecessors, (444), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-23 05:26:55,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 486 transitions. [2022-07-23 05:26:55,561 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 486 transitions. Word has length 37 [2022-07-23 05:26:55,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:26:55,561 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 486 transitions. [2022-07-23 05:26:55,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:26:55,562 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 486 transitions. [2022-07-23 05:26:55,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-23 05:26:55,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:26:55,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:26:55,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-23 05:26:55,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:26:55,775 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting inspectErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:26:55,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:26:55,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1920024891, now seen corresponding path program 1 times [2022-07-23 05:26:55,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:26:55,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583387335] [2022-07-23 05:26:55,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:26:55,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:26:55,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:26:55,777 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:26:55,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-23 05:26:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:26:56,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-23 05:26:56,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:26:56,094 INFO L390 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 [2022-07-23 05:26:56,111 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:26:56,112 INFO L390 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 12 treesize of output 12 [2022-07-23 05:26:56,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:26:56,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:26:56,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:26:56,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:26:57,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:26:57,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2022-07-23 05:26:57,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:26:57,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 30 [2022-07-23 05:26:57,263 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-23 05:26:57,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 47 [2022-07-23 05:26:57,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:26:57,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 46 treesize of output 37 [2022-07-23 05:26:57,288 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-07-23 05:26:57,288 INFO L390 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 33 [2022-07-23 05:26:57,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:26:57,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-07-23 05:26:57,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2022-07-23 05:26:57,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2022-07-23 05:26:57,430 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:26:57,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-07-23 05:26:57,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 22 treesize of output 24 [2022-07-23 05:26:57,764 INFO L390 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 15 treesize of output 7 [2022-07-23 05:26:57,767 INFO L390 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 25 treesize of output 13 [2022-07-23 05:26:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:26:57,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:26:57,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:26:57,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583387335] [2022-07-23 05:26:57,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583387335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:26:57,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:26:57,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-23 05:26:57,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320099342] [2022-07-23 05:26:57,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:26:57,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-23 05:26:57,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:26:57,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-23 05:26:57,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=253, Unknown=14, NotChecked=0, Total=306 [2022-07-23 05:26:57,895 INFO L87 Difference]: Start difference. First operand 379 states and 486 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:26:59,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:26:59,848 INFO L93 Difference]: Finished difference Result 447 states and 528 transitions. [2022-07-23 05:26:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-23 05:26:59,849 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-07-23 05:26:59,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:26:59,850 INFO L225 Difference]: With dead ends: 447 [2022-07-23 05:26:59,850 INFO L226 Difference]: Without dead ends: 447 [2022-07-23 05:26:59,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=77, Invalid=502, Unknown=21, NotChecked=0, Total=600 [2022-07-23 05:26:59,851 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 345 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1468 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-23 05:26:59,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1427 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 841 Invalid, 0 Unknown, 1468 Unchecked, 1.4s Time] [2022-07-23 05:26:59,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-07-23 05:26:59,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 379. [2022-07-23 05:26:59,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.5102739726027397) internal successors, (441), 356 states have internal predecessors, (441), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-23 05:26:59,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 483 transitions. [2022-07-23 05:26:59,860 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 483 transitions. Word has length 37 [2022-07-23 05:26:59,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:26:59,861 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 483 transitions. [2022-07-23 05:26:59,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:26:59,861 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 483 transitions. [2022-07-23 05:26:59,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-23 05:26:59,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:26:59,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:26:59,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-07-23 05:27:00,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:27:00,073 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:27:00,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:27:00,073 INFO L85 PathProgramCache]: Analyzing trace with hash -912874368, now seen corresponding path program 1 times [2022-07-23 05:27:00,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:27:00,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992071126] [2022-07-23 05:27:00,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:27:00,074 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:27:00,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:27:00,075 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:27:00,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-23 05:27:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:27:00,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 68 conjunts are in the unsatisfiable core [2022-07-23 05:27:00,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:27:00,334 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:27:00,335 INFO L390 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 12 treesize of output 12 [2022-07-23 05:27:00,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:27:00,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:27:00,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:27:00,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:27:07,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:07,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 157 [2022-07-23 05:27:07,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:07,950 INFO L356 Elim1Store]: treesize reduction 17, result has 34.6 percent of original size [2022-07-23 05:27:07,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 52 [2022-07-23 05:27:07,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:07,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 37 treesize of output 32 [2022-07-23 05:27:07,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:07,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2022-07-23 05:27:08,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:08,167 INFO L356 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2022-07-23 05:27:08,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 48 [2022-07-23 05:27:08,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:08,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2022-07-23 05:27:08,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:08,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 22 [2022-07-23 05:27:08,343 INFO L356 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-07-23 05:27:08,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 42 [2022-07-23 05:27:08,968 INFO L390 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 27 treesize of output 7 [2022-07-23 05:27:09,190 INFO L356 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2022-07-23 05:27:09,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 25 [2022-07-23 05:27:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:27:09,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:27:09,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:27:09,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992071126] [2022-07-23 05:27:09,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992071126] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:27:09,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:27:09,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-23 05:27:09,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545184835] [2022-07-23 05:27:09,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:27:09,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-23 05:27:09,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:27:09,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-23 05:27:09,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=288, Unknown=14, NotChecked=0, Total=342 [2022-07-23 05:27:09,273 INFO L87 Difference]: Start difference. First operand 379 states and 483 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:27:11,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:27:11,262 INFO L93 Difference]: Finished difference Result 457 states and 570 transitions. [2022-07-23 05:27:11,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-23 05:27:11,267 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (3), 3 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 40 [2022-07-23 05:27:11,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:27:11,269 INFO L225 Difference]: With dead ends: 457 [2022-07-23 05:27:11,269 INFO L226 Difference]: Without dead ends: 457 [2022-07-23 05:27:11,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=81, Invalid=548, Unknown=21, NotChecked=0, Total=650 [2022-07-23 05:27:11,270 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 78 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 685 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-23 05:27:11,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1589 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 643 Invalid, 0 Unknown, 685 Unchecked, 1.5s Time] [2022-07-23 05:27:11,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-07-23 05:27:11,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 394. [2022-07-23 05:27:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 307 states have (on average 1.485342019543974) internal successors, (456), 370 states have internal predecessors, (456), 28 states have call successors, (28), 11 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-23 05:27:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 498 transitions. [2022-07-23 05:27:11,280 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 498 transitions. Word has length 40 [2022-07-23 05:27:11,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:27:11,280 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 498 transitions. [2022-07-23 05:27:11,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:27:11,280 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 498 transitions. [2022-07-23 05:27:11,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-23 05:27:11,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:27:11,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:27:11,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-23 05:27:11,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:27:11,493 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:27:11,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:27:11,493 INFO L85 PathProgramCache]: Analyzing trace with hash -8084452, now seen corresponding path program 1 times [2022-07-23 05:27:11,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:27:11,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747222453] [2022-07-23 05:27:11,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:27:11,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:27:11,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:27:11,495 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:27:11,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-23 05:27:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:27:11,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-23 05:27:11,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:27:11,804 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:27:11,804 INFO L390 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 12 treesize of output 12 [2022-07-23 05:27:11,846 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:27:11,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:27:11,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:27:11,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:27:14,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:14,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:14,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:14,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:27:14,068 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-07-23 05:27:14,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 210 treesize of output 94 [2022-07-23 05:27:14,090 INFO L356 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2022-07-23 05:27:14,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 51 [2022-07-23 05:27:14,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:14,099 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 50 treesize of output 41 [2022-07-23 05:27:14,117 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-07-23 05:27:14,118 INFO L390 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 37 [2022-07-23 05:27:14,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 [2022-07-23 05:27:14,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:14,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:14,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:14,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-07-23 05:27:14,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:14,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:14,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:27:14,479 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-23 05:27:14,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 50 [2022-07-23 05:27:14,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 22 treesize of output 24 [2022-07-23 05:27:14,979 INFO L390 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 15 treesize of output 7 [2022-07-23 05:27:15,215 INFO L356 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-07-23 05:27:15,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 23 [2022-07-23 05:27:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:27:15,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:27:15,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:27:15,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747222453] [2022-07-23 05:27:15,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747222453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:27:15,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:27:15,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-23 05:27:15,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018482583] [2022-07-23 05:27:15,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:27:15,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-23 05:27:15,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:27:15,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-23 05:27:15,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=292, Unknown=10, NotChecked=0, Total=342 [2022-07-23 05:27:15,299 INFO L87 Difference]: Start difference. First operand 394 states and 498 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:27:20,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:27:20,525 INFO L93 Difference]: Finished difference Result 461 states and 541 transitions. [2022-07-23 05:27:20,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-23 05:27:20,526 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 3 states have call successors, (3), 3 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 43 [2022-07-23 05:27:20,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:27:20,527 INFO L225 Difference]: With dead ends: 461 [2022-07-23 05:27:20,527 INFO L226 Difference]: Without dead ends: 461 [2022-07-23 05:27:20,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=118, Invalid=732, Unknown=20, NotChecked=0, Total=870 [2022-07-23 05:27:20,528 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 383 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 2358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 533 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-23 05:27:20,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1626 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1783 Invalid, 0 Unknown, 533 Unchecked, 3.6s Time] [2022-07-23 05:27:20,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-07-23 05:27:20,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 394. [2022-07-23 05:27:20,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 307 states have (on average 1.482084690553746) internal successors, (455), 370 states have internal predecessors, (455), 28 states have call successors, (28), 11 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-23 05:27:20,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 497 transitions. [2022-07-23 05:27:20,537 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 497 transitions. Word has length 43 [2022-07-23 05:27:20,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:27:20,537 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 497 transitions. [2022-07-23 05:27:20,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:27:20,538 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 497 transitions. [2022-07-23 05:27:20,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-23 05:27:20,538 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:27:20,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:27:20,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-07-23 05:27:20,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:27:20,750 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:27:20,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:27:20,750 INFO L85 PathProgramCache]: Analyzing trace with hash -610222928, now seen corresponding path program 1 times [2022-07-23 05:27:20,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:27:20,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690872471] [2022-07-23 05:27:20,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:27:20,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:27:20,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:27:20,752 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:27:20,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-23 05:27:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:27:20,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 05:27:20,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:27:20,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-23 05:27:21,004 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:27:21,004 INFO L390 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 11 treesize of output 11 [2022-07-23 05:27:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:27:21,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:27:21,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:27:21,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690872471] [2022-07-23 05:27:21,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690872471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:27:21,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:27:21,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:27:21,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993840236] [2022-07-23 05:27:21,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:27:21,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 05:27:21,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:27:21,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 05:27:21,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:27:21,019 INFO L87 Difference]: Start difference. First operand 394 states and 497 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:27:21,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:27:21,353 INFO L93 Difference]: Finished difference Result 393 states and 493 transitions. [2022-07-23 05:27:21,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 05:27:21,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 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 46 [2022-07-23 05:27:21,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:27:21,355 INFO L225 Difference]: With dead ends: 393 [2022-07-23 05:27:21,355 INFO L226 Difference]: Without dead ends: 393 [2022-07-23 05:27:21,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:27:21,356 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 288 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 05:27:21,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 288 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 05:27:21,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-07-23 05:27:21,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-07-23 05:27:21,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 307 states have (on average 1.4723127035830619) internal successors, (452), 369 states have internal predecessors, (452), 27 states have call successors, (27), 11 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-23 05:27:21,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 493 transitions. [2022-07-23 05:27:21,365 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 493 transitions. Word has length 46 [2022-07-23 05:27:21,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:27:21,365 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 493 transitions. [2022-07-23 05:27:21,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:27:21,366 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 493 transitions. [2022-07-23 05:27:21,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-23 05:27:21,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:27:21,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:27:21,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-07-23 05:27:21,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:27:21,576 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting inspectErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:27:21,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:27:21,576 INFO L85 PathProgramCache]: Analyzing trace with hash -610231965, now seen corresponding path program 1 times [2022-07-23 05:27:21,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:27:21,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290541298] [2022-07-23 05:27:21,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:27:21,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:27:21,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:27:21,579 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:27:21,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-23 05:27:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:27:21,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 05:27:21,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:27:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:27:21,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:27:21,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:27:21,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290541298] [2022-07-23 05:27:21,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290541298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:27:21,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:27:21,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:27:21,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048479134] [2022-07-23 05:27:21,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:27:21,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:27:21,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:27:21,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:27:21,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:27:21,747 INFO L87 Difference]: Start difference. First operand 393 states and 493 transitions. Second operand has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:27:22,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:27:22,011 INFO L93 Difference]: Finished difference Result 387 states and 475 transitions. [2022-07-23 05:27:22,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 05:27:22,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-07-23 05:27:22,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:27:22,013 INFO L225 Difference]: With dead ends: 387 [2022-07-23 05:27:22,013 INFO L226 Difference]: Without dead ends: 387 [2022-07-23 05:27:22,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:27:22,014 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 121 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 05:27:22,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 295 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 05:27:22,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-07-23 05:27:22,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2022-07-23 05:27:22,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 307 states have (on average 1.4136807817589576) internal successors, (434), 363 states have internal predecessors, (434), 27 states have call successors, (27), 11 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-23 05:27:22,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 475 transitions. [2022-07-23 05:27:22,028 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 475 transitions. Word has length 46 [2022-07-23 05:27:22,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:27:22,028 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 475 transitions. [2022-07-23 05:27:22,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:27:22,028 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 475 transitions. [2022-07-23 05:27:22,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-23 05:27:22,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:27:22,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:27:22,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-07-23 05:27:22,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:27:22,240 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting inspectErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:27:22,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:27:22,240 INFO L85 PathProgramCache]: Analyzing trace with hash -610231964, now seen corresponding path program 1 times [2022-07-23 05:27:22,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:27:22,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080496420] [2022-07-23 05:27:22,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:27:22,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:27:22,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:27:22,242 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:27:22,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-07-23 05:27:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:27:22,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-23 05:27:22,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:27:22,511 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:27:22,511 INFO L390 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 12 treesize of output 12 [2022-07-23 05:27:22,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 05:27:22,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:27:22,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:27:22,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:27:22,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:27:23,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:23,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2022-07-23 05:27:23,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:23,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 30 [2022-07-23 05:27:23,799 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-23 05:27:23,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 47 [2022-07-23 05:27:23,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:23,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 26 [2022-07-23 05:27:23,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:23,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-07-23 05:27:23,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:23,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-07-23 05:27:23,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2022-07-23 05:27:23,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2022-07-23 05:27:23,952 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:27:23,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-07-23 05:27:23,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 22 treesize of output 24 [2022-07-23 05:27:24,355 INFO L390 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 15 treesize of output 7 [2022-07-23 05:27:24,360 INFO L390 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 25 treesize of output 13 [2022-07-23 05:27:24,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:27:24,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:27:24,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:27:24,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080496420] [2022-07-23 05:27:24,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080496420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:27:24,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:27:24,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-23 05:27:24,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427375486] [2022-07-23 05:27:24,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:27:24,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-23 05:27:24,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:27:24,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-23 05:27:24,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=286, Unknown=15, NotChecked=0, Total=342 [2022-07-23 05:27:24,619 INFO L87 Difference]: Start difference. First operand 387 states and 475 transitions. Second operand has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:27:26,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:27:26,704 INFO L93 Difference]: Finished difference Result 440 states and 510 transitions. [2022-07-23 05:27:26,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-23 05:27:26,705 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-07-23 05:27:26,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:27:26,706 INFO L225 Difference]: With dead ends: 440 [2022-07-23 05:27:26,707 INFO L226 Difference]: Without dead ends: 440 [2022-07-23 05:27:26,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=94, Invalid=638, Unknown=24, NotChecked=0, Total=756 [2022-07-23 05:27:26,707 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 296 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 2416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1367 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-23 05:27:26,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1511 Invalid, 2416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1020 Invalid, 0 Unknown, 1367 Unchecked, 1.3s Time] [2022-07-23 05:27:26,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-07-23 05:27:26,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 387. [2022-07-23 05:27:26,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 307 states have (on average 1.3908794788273615) internal successors, (427), 363 states have internal predecessors, (427), 27 states have call successors, (27), 11 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-23 05:27:26,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 468 transitions. [2022-07-23 05:27:26,716 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 468 transitions. Word has length 46 [2022-07-23 05:27:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:27:26,716 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 468 transitions. [2022-07-23 05:27:26,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:27:26,716 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 468 transitions. [2022-07-23 05:27:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-23 05:27:26,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:27:26,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:27:26,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-07-23 05:27:26,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:27:26,931 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:27:26,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:27:26,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1176224425, now seen corresponding path program 1 times [2022-07-23 05:27:26,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:27:26,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016402973] [2022-07-23 05:27:26,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:27:26,932 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:27:26,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:27:26,933 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:27:26,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-07-23 05:27:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:27:27,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-23 05:27:27,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:27:27,204 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:27:27,204 INFO L390 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 12 treesize of output 12 [2022-07-23 05:27:27,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:27:27,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:27:27,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:27:27,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:27:28,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:28,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 93 [2022-07-23 05:27:28,222 INFO L356 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2022-07-23 05:27:28,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 51 [2022-07-23 05:27:28,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:28,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 50 treesize of output 41 [2022-07-23 05:27:28,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:28,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 33 treesize of output 28 [2022-07-23 05:27:28,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:28,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2022-07-23 05:27:28,252 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-07-23 05:27:28,252 INFO L390 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 37 [2022-07-23 05:27:28,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2022-07-23 05:27:28,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 [2022-07-23 05:27:28,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:28,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 35 [2022-07-23 05:27:28,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 33 treesize of output 26 [2022-07-23 05:27:29,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:27:29,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:29,170 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-23 05:27:29,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 27 [2022-07-23 05:27:29,179 INFO L356 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-07-23 05:27:29,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 18 [2022-07-23 05:27:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:27:29,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:27:29,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:27:29,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016402973] [2022-07-23 05:27:29,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016402973] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:27:29,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:27:29,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-23 05:27:29,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690901950] [2022-07-23 05:27:29,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:27:29,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-23 05:27:29,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:27:29,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-23 05:27:29,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=323, Unknown=15, NotChecked=0, Total=380 [2022-07-23 05:27:29,258 INFO L87 Difference]: Start difference. First operand 387 states and 468 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 17 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:27:33,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:27:33,651 INFO L93 Difference]: Finished difference Result 438 states and 506 transitions. [2022-07-23 05:27:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-23 05:27:33,652 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 17 states have internal predecessors, (45), 3 states have call successors, (3), 3 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 49 [2022-07-23 05:27:33,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:27:33,654 INFO L225 Difference]: With dead ends: 438 [2022-07-23 05:27:33,654 INFO L226 Difference]: Without dead ends: 438 [2022-07-23 05:27:33,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=146, Invalid=945, Unknown=31, NotChecked=0, Total=1122 [2022-07-23 05:27:33,654 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 414 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 2256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 521 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:27:33,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 1643 Invalid, 2256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1689 Invalid, 0 Unknown, 521 Unchecked, 3.0s Time] [2022-07-23 05:27:33,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-07-23 05:27:33,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 387. [2022-07-23 05:27:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 307 states have (on average 1.3843648208469055) internal successors, (425), 363 states have internal predecessors, (425), 27 states have call successors, (27), 11 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-23 05:27:33,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 466 transitions. [2022-07-23 05:27:33,662 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 466 transitions. Word has length 49 [2022-07-23 05:27:33,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:27:33,662 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 466 transitions. [2022-07-23 05:27:33,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 17 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 05:27:33,663 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 466 transitions. [2022-07-23 05:27:33,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-23 05:27:33,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:27:33,663 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:27:33,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-07-23 05:27:33,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:27:33,875 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-07-23 05:27:33,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:27:33,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1567315803, now seen corresponding path program 1 times [2022-07-23 05:27:33,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:27:33,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215227817] [2022-07-23 05:27:33,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:27:33,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:27:33,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:27:33,877 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:27:33,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-07-23 05:27:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:27:34,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 73 conjunts are in the unsatisfiable core [2022-07-23 05:27:34,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:27:34,298 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:27:34,298 INFO L390 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 12 treesize of output 12 [2022-07-23 05:27:34,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:27:34,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-07-23 05:27:34,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:27:34,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-23 05:27:34,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:34,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2022-07-23 05:27:34,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:34,977 INFO L356 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2022-07-23 05:27:34,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 38 [2022-07-23 05:27:34,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-07-23 05:27:34,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:34,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-07-23 05:27:35,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 23 [2022-07-23 05:27:35,059 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:27:35,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2022-07-23 05:27:35,140 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:27:35,141 INFO L390 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 12 treesize of output 12 [2022-07-23 05:27:35,205 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 26 [2022-07-23 05:27:35,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:35,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 8 [2022-07-23 05:27:35,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:27:35,902 INFO L356 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2022-07-23 05:27:35,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:27:35,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215227817] [2022-07-23 05:27:35,904 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-23 05:27:35,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-07-23 05:27:36,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:27:36,105 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_#memory_$Pointer$.base_BEFORE_CALL_26| input size 56 context size 56 output size 56 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:611) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:529) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:298) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:284) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-23 05:27:36,111 INFO L158 Benchmark]: Toolchain (without parser) took 117688.47ms. Allocated memory was 54.5MB in the beginning and 98.6MB in the end (delta: 44.0MB). Free memory was 29.2MB in the beginning and 52.0MB in the end (delta: -22.9MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2022-07-23 05:27:36,112 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory was 36.1MB in the beginning and 36.1MB in the end (delta: 26.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 05:27:36,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 672.13ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 29.0MB in the beginning and 40.0MB in the end (delta: -11.0MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2022-07-23 05:27:36,115 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.12ms. Allocated memory is still 67.1MB. Free memory was 39.9MB in the beginning and 37.2MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-23 05:27:36,115 INFO L158 Benchmark]: Boogie Preprocessor took 84.07ms. Allocated memory is still 67.1MB. Free memory was 37.2MB in the beginning and 34.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 05:27:36,116 INFO L158 Benchmark]: RCFGBuilder took 1136.86ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 34.2MB in the beginning and 47.4MB in the end (delta: -13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 05:27:36,116 INFO L158 Benchmark]: TraceAbstraction took 115709.03ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 46.8MB in the beginning and 52.0MB in the end (delta: -5.2MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2022-07-23 05:27:36,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory was 36.1MB in the beginning and 36.1MB in the end (delta: 26.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 672.13ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 29.0MB in the beginning and 40.0MB in the end (delta: -11.0MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.12ms. Allocated memory is still 67.1MB. Free memory was 39.9MB in the beginning and 37.2MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.07ms. Allocated memory is still 67.1MB. Free memory was 37.2MB in the beginning and 34.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1136.86ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 34.2MB in the beginning and 47.4MB in the end (delta: -13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 115709.03ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 46.8MB in the beginning and 52.0MB in the end (delta: -5.2MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_BEFORE_CALL_26| input size 56 context size 56 output size 56 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_BEFORE_CALL_26| input size 56 context size 56 output size 56: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-23 05:27:36,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_BEFORE_CALL_26| input size 56 context size 56 output size 56