./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/lis-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/lis-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 19:48:54,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 19:48:54,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 19:48:54,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 19:48:54,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 19:48:54,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 19:48:54,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 19:48:54,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 19:48:54,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 19:48:54,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 19:48:54,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 19:48:54,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 19:48:54,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 19:48:54,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 19:48:54,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 19:48:54,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 19:48:54,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 19:48:54,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 19:48:54,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 19:48:54,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 19:48:54,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 19:48:54,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 19:48:54,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 19:48:54,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 19:48:54,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 19:48:54,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 19:48:54,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 19:48:54,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 19:48:54,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 19:48:54,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 19:48:54,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 19:48:54,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 19:48:54,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 19:48:54,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 19:48:54,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 19:48:54,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 19:48:54,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 19:48:54,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 19:48:54,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 19:48:54,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 19:48:54,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 19:48:54,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-18 19:48:54,507 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 19:48:54,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 19:48:54,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 19:48:54,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 19:48:54,508 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 19:48:54,508 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 19:48:54,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 19:48:54,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 19:48:54,509 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 19:48:54,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 19:48:54,510 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 19:48:54,510 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 19:48:54,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 19:48:54,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 19:48:54,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 19:48:54,510 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 19:48:54,510 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 19:48:54,510 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 19:48:54,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 19:48:54,511 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 19:48:54,511 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 19:48:54,511 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 19:48:54,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 19:48:54,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 19:48:54,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 19:48:54,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 19:48:54,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 19:48:54,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 19:48:54,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 19:48:54,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 19:48:54,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 19:48:54,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf [2021-12-18 19:48:54,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 19:48:54,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 19:48:54,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 19:48:54,729 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 19:48:54,729 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 19:48:54,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2021-12-18 19:48:54,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36fdca608/0912c6a5b2e8498090c95a9961f58e2b/FLAG0c375a58e [2021-12-18 19:48:55,186 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 19:48:55,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2021-12-18 19:48:55,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36fdca608/0912c6a5b2e8498090c95a9961f58e2b/FLAG0c375a58e [2021-12-18 19:48:55,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36fdca608/0912c6a5b2e8498090c95a9961f58e2b [2021-12-18 19:48:55,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 19:48:55,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 19:48:55,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 19:48:55,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 19:48:55,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 19:48:55,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:48:55" (1/1) ... [2021-12-18 19:48:55,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b64d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:48:55, skipping insertion in model container [2021-12-18 19:48:55,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:48:55" (1/1) ... [2021-12-18 19:48:55,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 19:48:55,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 19:48:55,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 19:48:55,489 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-18 19:48:55,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3c5a0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:48:55, skipping insertion in model container [2021-12-18 19:48:55,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 19:48:55,490 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-18 19:48:55,491 INFO L158 Benchmark]: Toolchain (without parser) took 273.73ms. Allocated memory is still 121.6MB. Free memory was 88.4MB in the beginning and 94.3MB in the end (delta: -5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-18 19:48:55,492 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 83.9MB. Free memory was 41.9MB in the beginning and 41.9MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 19:48:55,492 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.01ms. Allocated memory is still 121.6MB. Free memory was 88.2MB in the beginning and 94.3MB in the end (delta: -6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-18 19:48:55,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 83.9MB. Free memory was 41.9MB in the beginning and 41.9MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.01ms. Allocated memory is still 121.6MB. Free memory was 88.2MB in the beginning and 94.3MB in the end (delta: -6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 515]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/lis-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 19:48:56,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 19:48:56,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 19:48:56,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 19:48:56,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 19:48:56,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 19:48:56,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 19:48:56,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 19:48:56,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 19:48:56,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 19:48:56,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 19:48:56,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 19:48:56,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 19:48:56,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 19:48:56,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 19:48:57,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 19:48:57,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 19:48:57,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 19:48:57,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 19:48:57,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 19:48:57,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 19:48:57,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 19:48:57,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 19:48:57,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 19:48:57,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 19:48:57,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 19:48:57,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 19:48:57,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 19:48:57,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 19:48:57,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 19:48:57,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 19:48:57,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 19:48:57,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 19:48:57,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 19:48:57,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 19:48:57,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 19:48:57,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 19:48:57,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 19:48:57,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 19:48:57,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 19:48:57,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 19:48:57,029 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-18 19:48:57,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 19:48:57,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 19:48:57,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 19:48:57,060 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 19:48:57,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 19:48:57,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 19:48:57,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 19:48:57,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 19:48:57,062 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 19:48:57,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 19:48:57,063 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 19:48:57,063 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 19:48:57,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 19:48:57,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 19:48:57,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 19:48:57,063 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 19:48:57,063 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 19:48:57,064 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 19:48:57,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 19:48:57,064 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 19:48:57,071 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-18 19:48:57,071 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-18 19:48:57,071 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 19:48:57,075 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 19:48:57,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 19:48:57,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 19:48:57,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 19:48:57,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 19:48:57,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 19:48:57,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 19:48:57,076 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-18 19:48:57,076 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-18 19:48:57,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 19:48:57,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-18 19:48:57,077 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf [2021-12-18 19:48:57,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 19:48:57,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 19:48:57,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 19:48:57,330 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 19:48:57,331 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 19:48:57,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2021-12-18 19:48:57,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8084e6452/3bede7b7f71f4a46a7b2cf931aed9ac3/FLAGc99f0f69b [2021-12-18 19:48:57,816 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 19:48:57,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2021-12-18 19:48:57,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8084e6452/3bede7b7f71f4a46a7b2cf931aed9ac3/FLAGc99f0f69b [2021-12-18 19:48:57,833 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8084e6452/3bede7b7f71f4a46a7b2cf931aed9ac3 [2021-12-18 19:48:57,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 19:48:57,836 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 19:48:57,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 19:48:57,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 19:48:57,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 19:48:57,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:48:57" (1/1) ... [2021-12-18 19:48:57,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f83fb56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:48:57, skipping insertion in model container [2021-12-18 19:48:57,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:48:57" (1/1) ... [2021-12-18 19:48:57,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 19:48:57,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 19:48:58,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 19:48:58,163 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-18 19:48:58,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 19:48:58,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 19:48:58,205 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 19:48:58,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 19:48:58,250 INFO L208 MainTranslator]: Completed translation [2021-12-18 19:48:58,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:48:58 WrapperNode [2021-12-18 19:48:58,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 19:48:58,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 19:48:58,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 19:48:58,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 19:48:58,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:48:58" (1/1) ... [2021-12-18 19:48:58,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:48:58" (1/1) ... [2021-12-18 19:48:58,284 INFO L137 Inliner]: procedures = 117, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 114 [2021-12-18 19:48:58,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 19:48:58,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 19:48:58,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 19:48:58,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 19:48:58,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:48:58" (1/1) ... [2021-12-18 19:48:58,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:48:58" (1/1) ... [2021-12-18 19:48:58,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:48:58" (1/1) ... [2021-12-18 19:48:58,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:48:58" (1/1) ... [2021-12-18 19:48:58,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:48:58" (1/1) ... [2021-12-18 19:48:58,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:48:58" (1/1) ... [2021-12-18 19:48:58,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:48:58" (1/1) ... [2021-12-18 19:48:58,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 19:48:58,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 19:48:58,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 19:48:58,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 19:48:58,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:48:58" (1/1) ... [2021-12-18 19:48:58,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 19:48:58,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:48:58,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 19:48:58,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 19:48:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-18 19:48:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 19:48:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 19:48:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-18 19:48:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 19:48:58,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 19:48:58,436 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 19:48:58,437 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 19:48:58,820 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 19:48:58,824 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 19:48:58,824 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-18 19:48:58,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:48:58 BoogieIcfgContainer [2021-12-18 19:48:58,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 19:48:58,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 19:48:58,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 19:48:58,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 19:48:58,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:48:57" (1/3) ... [2021-12-18 19:48:58,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@880450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:48:58, skipping insertion in model container [2021-12-18 19:48:58,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:48:58" (2/3) ... [2021-12-18 19:48:58,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@880450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:48:58, skipping insertion in model container [2021-12-18 19:48:58,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:48:58" (3/3) ... [2021-12-18 19:48:58,832 INFO L111 eAbstractionObserver]: Analyzing ICFG lis-alloca-1.i [2021-12-18 19:48:58,836 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 19:48:58,836 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2021-12-18 19:48:58,871 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 19:48:58,878 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 19:48:58,878 INFO L340 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2021-12-18 19:48:58,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 41 states have (on average 1.951219512195122) internal successors, (80), 66 states have internal predecessors, (80), 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) [2021-12-18 19:48:58,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-18 19:48:58,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:48:58,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-18 19:48:58,893 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:48:58,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:48:58,896 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2021-12-18 19:48:58,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:48:58,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338018174] [2021-12-18 19:48:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:48:58,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:48:58,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:48:58,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:48:58,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-18 19:48:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:48:58,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 19:48:58,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:48:59,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 19:48:59,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:48:59,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:48:59,051 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:48:59,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338018174] [2021-12-18 19:48:59,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338018174] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:48:59,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:48:59,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 19:48:59,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488258931] [2021-12-18 19:48:59,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:48:59,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 19:48:59,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:48:59,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 19:48:59,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 19:48:59,078 INFO L87 Difference]: Start difference. First operand has 67 states, 41 states have (on average 1.951219512195122) internal successors, (80), 66 states have internal predecessors, (80), 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) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-18 19:48:59,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:48:59,182 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2021-12-18 19:48:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 19:48:59,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-12-18 19:48:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:48:59,189 INFO L225 Difference]: With dead ends: 66 [2021-12-18 19:48:59,189 INFO L226 Difference]: Without dead ends: 64 [2021-12-18 19:48:59,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 19:48:59,192 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 62 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:48:59,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 51 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:48:59,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-18 19:48:59,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-12-18 19:48:59,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.8) internal successors, (72), 63 states have internal predecessors, (72), 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) [2021-12-18 19:48:59,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2021-12-18 19:48:59,222 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 6 [2021-12-18 19:48:59,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:48:59,222 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2021-12-18 19:48:59,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-18 19:48:59,223 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2021-12-18 19:48:59,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-18 19:48:59,223 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:48:59,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-18 19:48:59,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-18 19:48:59,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:48:59,430 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:48:59,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:48:59,431 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2021-12-18 19:48:59,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:48:59,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484115255] [2021-12-18 19:48:59,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:48:59,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:48:59,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:48:59,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:48:59,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-18 19:48:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:48:59,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 19:48:59,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:48:59,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 19:48:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:48:59,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:48:59,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:48:59,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484115255] [2021-12-18 19:48:59,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484115255] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:48:59,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:48:59,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 19:48:59,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778105369] [2021-12-18 19:48:59,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:48:59,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 19:48:59,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:48:59,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 19:48:59,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 19:48:59,548 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-18 19:48:59,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:48:59,871 INFO L93 Difference]: Finished difference Result 129 states and 144 transitions. [2021-12-18 19:48:59,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 19:48:59,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-12-18 19:48:59,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:48:59,874 INFO L225 Difference]: With dead ends: 129 [2021-12-18 19:48:59,874 INFO L226 Difference]: Without dead ends: 129 [2021-12-18 19:48:59,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:48:59,875 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 73 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 19:48:59,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 275 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 19:48:59,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-18 19:48:59,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 67. [2021-12-18 19:48:59,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.744186046511628) internal successors, (75), 66 states have internal predecessors, (75), 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) [2021-12-18 19:48:59,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2021-12-18 19:48:59,881 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 6 [2021-12-18 19:48:59,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:48:59,881 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2021-12-18 19:48:59,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-18 19:48:59,881 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2021-12-18 19:48:59,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-18 19:48:59,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:48:59,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-18 19:48:59,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:00,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:00,084 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:00,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:00,084 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2021-12-18 19:49:00,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:00,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727257267] [2021-12-18 19:49:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:00,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:00,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:00,086 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:49:00,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-18 19:49:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:00,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 19:49:00,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:00,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 19:49:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:00,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:49:00,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:00,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727257267] [2021-12-18 19:49:00,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727257267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:00,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:00,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 19:49:00,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555760532] [2021-12-18 19:49:00,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:00,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 19:49:00,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:00,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 19:49:00,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 19:49:00,220 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-18 19:49:00,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:00,243 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2021-12-18 19:49:00,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 19:49:00,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-12-18 19:49:00,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:00,248 INFO L225 Difference]: With dead ends: 69 [2021-12-18 19:49:00,249 INFO L226 Difference]: Without dead ends: 69 [2021-12-18 19:49:00,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:49:00,253 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 1 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:00,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 174 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 29 Unchecked, 0.0s Time] [2021-12-18 19:49:00,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-18 19:49:00,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-12-18 19:49:00,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 44 states have (on average 1.75) internal successors, (77), 67 states have internal predecessors, (77), 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) [2021-12-18 19:49:00,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2021-12-18 19:49:00,264 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 6 [2021-12-18 19:49:00,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:00,265 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2021-12-18 19:49:00,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-18 19:49:00,266 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2021-12-18 19:49:00,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-18 19:49:00,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:00,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:00,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:00,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:00,473 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:00,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:00,474 INFO L85 PathProgramCache]: Analyzing trace with hash 176742579, now seen corresponding path program 1 times [2021-12-18 19:49:00,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:00,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708120407] [2021-12-18 19:49:00,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:00,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:00,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:00,476 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:49:00,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-18 19:49:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:00,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 19:49:00,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:00,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:49:00,556 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:00,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708120407] [2021-12-18 19:49:00,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708120407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:00,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:00,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 19:49:00,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752404720] [2021-12-18 19:49:00,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:00,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 19:49:00,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:00,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 19:49:00,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-18 19:49:00,564 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-12-18 19:49:00,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:00,603 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2021-12-18 19:49:00,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 19:49:00,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-12-18 19:49:00,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:00,605 INFO L225 Difference]: With dead ends: 70 [2021-12-18 19:49:00,605 INFO L226 Difference]: Without dead ends: 70 [2021-12-18 19:49:00,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-18 19:49:00,609 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 71 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:00,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 129 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 19:49:00,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-18 19:49:00,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2021-12-18 19:49:00,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 65 states have internal predecessors, (74), 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) [2021-12-18 19:49:00,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2021-12-18 19:49:00,618 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 8 [2021-12-18 19:49:00,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:00,618 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2021-12-18 19:49:00,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-12-18 19:49:00,619 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2021-12-18 19:49:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-18 19:49:00,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:00,619 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:00,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:00,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:00,827 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:00,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:00,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2021-12-18 19:49:00,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:00,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902669992] [2021-12-18 19:49:00,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:00,829 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:00,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:00,830 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:49:00,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-18 19:49:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:00,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 19:49:00,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:00,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:00,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:01,000 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:01,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902669992] [2021-12-18 19:49:01,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902669992] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:01,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:49:01,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-18 19:49:01,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876247420] [2021-12-18 19:49:01,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:01,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 19:49:01,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:01,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 19:49:01,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-18 19:49:01,001 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2021-12-18 19:49:01,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:01,065 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2021-12-18 19:49:01,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 19:49:01,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 10 [2021-12-18 19:49:01,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:01,068 INFO L225 Difference]: With dead ends: 127 [2021-12-18 19:49:01,068 INFO L226 Difference]: Without dead ends: 127 [2021-12-18 19:49:01,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-18 19:49:01,069 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 317 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:01,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 255 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:49:01,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-18 19:49:01,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 72. [2021-12-18 19:49:01,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 71 states have internal predecessors, (80), 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) [2021-12-18 19:49:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2021-12-18 19:49:01,079 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 10 [2021-12-18 19:49:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:01,080 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2021-12-18 19:49:01,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2021-12-18 19:49:01,080 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2021-12-18 19:49:01,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-18 19:49:01,081 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:01,081 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:01,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-18 19:49:01,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:01,285 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:01,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:01,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2021-12-18 19:49:01,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:01,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42311118] [2021-12-18 19:49:01,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:01,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:01,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:01,287 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:49:01,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-18 19:49:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:01,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-18 19:49:01,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:01,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 19:49:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:01,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:01,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:01,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42311118] [2021-12-18 19:49:01,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42311118] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:01,839 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:49:01,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-12-18 19:49:01,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684558468] [2021-12-18 19:49:01,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:01,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 19:49:01,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:01,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 19:49:01,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-18 19:49:01,840 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 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) [2021-12-18 19:49:02,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:02,486 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2021-12-18 19:49:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 19:49:02,487 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 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 10 [2021-12-18 19:49:02,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:02,488 INFO L225 Difference]: With dead ends: 135 [2021-12-18 19:49:02,488 INFO L226 Difference]: Without dead ends: 135 [2021-12-18 19:49:02,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-18 19:49:02,489 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 324 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:02,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 267 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 152 Invalid, 0 Unknown, 5 Unchecked, 0.6s Time] [2021-12-18 19:49:02,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-12-18 19:49:02,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 80. [2021-12-18 19:49:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.6071428571428572) internal successors, (90), 79 states have internal predecessors, (90), 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) [2021-12-18 19:49:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2021-12-18 19:49:02,493 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 10 [2021-12-18 19:49:02,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:02,493 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2021-12-18 19:49:02,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 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) [2021-12-18 19:49:02,494 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2021-12-18 19:49:02,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-18 19:49:02,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:02,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:02,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-18 19:49:02,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:02,699 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:02,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:02,699 INFO L85 PathProgramCache]: Analyzing trace with hash -680998152, now seen corresponding path program 1 times [2021-12-18 19:49:02,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:02,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757021473] [2021-12-18 19:49:02,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:02,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:02,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:02,700 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:49:02,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-18 19:49:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:02,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 19:49:02,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:02,778 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-18 19:49:02,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-12-18 19:49:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:49:02,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:49:02,801 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:02,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757021473] [2021-12-18 19:49:02,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757021473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:02,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:02,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 19:49:02,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665964932] [2021-12-18 19:49:02,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:02,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 19:49:02,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:02,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 19:49:02,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 19:49:02,803 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-12-18 19:49:02,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:02,915 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2021-12-18 19:49:02,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 19:49:02,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-12-18 19:49:02,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:02,917 INFO L225 Difference]: With dead ends: 73 [2021-12-18 19:49:02,917 INFO L226 Difference]: Without dead ends: 73 [2021-12-18 19:49:02,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 19:49:02,917 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 49 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:02,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 49 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:49:02,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-12-18 19:49:02,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-12-18 19:49:02,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 72 states have internal predecessors, (83), 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) [2021-12-18 19:49:02,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2021-12-18 19:49:02,920 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 12 [2021-12-18 19:49:02,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:02,920 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2021-12-18 19:49:02,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-12-18 19:49:02,921 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2021-12-18 19:49:02,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-18 19:49:02,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:02,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:02,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:03,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:03,122 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:03,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:03,122 INFO L85 PathProgramCache]: Analyzing trace with hash -680998151, now seen corresponding path program 1 times [2021-12-18 19:49:03,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:03,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775730698] [2021-12-18 19:49:03,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:03,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:03,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:03,123 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:49:03,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-18 19:49:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:03,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-18 19:49:03,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:03,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:49:03,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-18 19:49:03,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-12-18 19:49:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:49:03,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:49:03,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:03,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775730698] [2021-12-18 19:49:03,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775730698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:03,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:03,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 19:49:03,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697149332] [2021-12-18 19:49:03,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:03,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 19:49:03,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:03,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 19:49:03,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 19:49:03,251 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-12-18 19:49:03,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:03,425 INFO L93 Difference]: Finished difference Result 128 states and 145 transitions. [2021-12-18 19:49:03,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 19:49:03,428 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), 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 12 [2021-12-18 19:49:03,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:03,428 INFO L225 Difference]: With dead ends: 128 [2021-12-18 19:49:03,429 INFO L226 Difference]: Without dead ends: 128 [2021-12-18 19:49:03,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:49:03,429 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 66 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:03,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 139 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 19:49:03,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-12-18 19:49:03,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 76. [2021-12-18 19:49:03,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 59 states have (on average 1.4745762711864407) internal successors, (87), 75 states have internal predecessors, (87), 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) [2021-12-18 19:49:03,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2021-12-18 19:49:03,432 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 12 [2021-12-18 19:49:03,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:03,433 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2021-12-18 19:49:03,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-12-18 19:49:03,433 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2021-12-18 19:49:03,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-18 19:49:03,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:03,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:03,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:03,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:03,640 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:03,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:03,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1074025161, now seen corresponding path program 1 times [2021-12-18 19:49:03,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:03,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275603339] [2021-12-18 19:49:03,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:03,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:03,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:03,642 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:49:03,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-18 19:49:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:03,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-18 19:49:03,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:03,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:49:03,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2021-12-18 19:49:03,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-12-18 19:49:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:49:03,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:49:03,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:03,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275603339] [2021-12-18 19:49:03,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275603339] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:03,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:03,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 19:49:03,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033936061] [2021-12-18 19:49:03,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:03,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 19:49:03,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:03,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 19:49:03,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:49:03,826 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-12-18 19:49:04,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:04,014 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2021-12-18 19:49:04,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 19:49:04,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2021-12-18 19:49:04,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:04,015 INFO L225 Difference]: With dead ends: 82 [2021-12-18 19:49:04,015 INFO L226 Difference]: Without dead ends: 82 [2021-12-18 19:49:04,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-18 19:49:04,016 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 65 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:04,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 105 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 41 Unchecked, 0.2s Time] [2021-12-18 19:49:04,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-12-18 19:49:04,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2021-12-18 19:49:04,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 74 states have internal predecessors, (85), 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) [2021-12-18 19:49:04,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2021-12-18 19:49:04,019 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 12 [2021-12-18 19:49:04,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:04,019 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2021-12-18 19:49:04,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-12-18 19:49:04,019 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2021-12-18 19:49:04,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-18 19:49:04,020 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:04,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:04,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-18 19:49:04,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:04,230 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:04,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:04,231 INFO L85 PathProgramCache]: Analyzing trace with hash 363893777, now seen corresponding path program 1 times [2021-12-18 19:49:04,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:04,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594467156] [2021-12-18 19:49:04,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:04,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:04,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:04,232 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:49:04,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-18 19:49:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:04,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 19:49:04,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:04,317 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-18 19:49:04,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 18 [2021-12-18 19:49:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:49:04,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:49:04,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:04,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594467156] [2021-12-18 19:49:04,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594467156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:04,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:04,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 19:49:04,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564169863] [2021-12-18 19:49:04,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:04,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 19:49:04,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:04,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 19:49:04,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 19:49:04,330 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-12-18 19:49:04,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:04,411 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2021-12-18 19:49:04,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 19:49:04,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2021-12-18 19:49:04,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:04,416 INFO L225 Difference]: With dead ends: 73 [2021-12-18 19:49:04,416 INFO L226 Difference]: Without dead ends: 73 [2021-12-18 19:49:04,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 19:49:04,416 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 46 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:04,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 54 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:49:04,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-12-18 19:49:04,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-12-18 19:49:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 72 states have internal predecessors, (83), 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) [2021-12-18 19:49:04,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2021-12-18 19:49:04,419 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 13 [2021-12-18 19:49:04,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:04,419 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2021-12-18 19:49:04,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-12-18 19:49:04,419 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2021-12-18 19:49:04,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-18 19:49:04,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:04,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:04,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:04,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:04,623 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:04,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:04,624 INFO L85 PathProgramCache]: Analyzing trace with hash 363893778, now seen corresponding path program 1 times [2021-12-18 19:49:04,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:04,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229140968] [2021-12-18 19:49:04,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:04,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:04,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:04,625 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:49:04,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-18 19:49:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:04,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-18 19:49:04,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:04,718 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 19:49:04,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-18 19:49:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:49:04,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:49:04,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:04,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229140968] [2021-12-18 19:49:04,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229140968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:04,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:04,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 19:49:04,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697305353] [2021-12-18 19:49:04,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:04,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 19:49:04,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:04,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 19:49:04,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 19:49:04,746 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-12-18 19:49:04,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:04,915 INFO L93 Difference]: Finished difference Result 123 states and 139 transitions. [2021-12-18 19:49:04,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 19:49:04,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-12-18 19:49:04,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:04,916 INFO L225 Difference]: With dead ends: 123 [2021-12-18 19:49:04,916 INFO L226 Difference]: Without dead ends: 123 [2021-12-18 19:49:04,917 INFO L932 BasicCegarLoop]: 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 [2021-12-18 19:49:04,917 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 56 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:04,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 134 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 19:49:04,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-18 19:49:04,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 77. [2021-12-18 19:49:04,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.403225806451613) internal successors, (87), 76 states have internal predecessors, (87), 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) [2021-12-18 19:49:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2021-12-18 19:49:04,919 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 13 [2021-12-18 19:49:04,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:04,920 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2021-12-18 19:49:04,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-12-18 19:49:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2021-12-18 19:49:04,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-18 19:49:04,920 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:04,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:04,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:05,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:05,127 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:05,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:05,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958356, now seen corresponding path program 1 times [2021-12-18 19:49:05,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:05,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138435092] [2021-12-18 19:49:05,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:05,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:05,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:05,129 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:49:05,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-18 19:49:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:05,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-18 19:49:05,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:05,229 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-12-18 19:49:05,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2021-12-18 19:49:05,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:49:05,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:49:05,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:05,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138435092] [2021-12-18 19:49:05,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138435092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:05,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:05,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 19:49:05,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117448966] [2021-12-18 19:49:05,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:05,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 19:49:05,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:05,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 19:49:05,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:49:05,296 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-12-18 19:49:05,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:05,349 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2021-12-18 19:49:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 19:49:05,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2021-12-18 19:49:05,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:05,350 INFO L225 Difference]: With dead ends: 79 [2021-12-18 19:49:05,350 INFO L226 Difference]: Without dead ends: 79 [2021-12-18 19:49:05,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-18 19:49:05,351 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 60 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:05,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 78 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 41 Unchecked, 0.0s Time] [2021-12-18 19:49:05,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-12-18 19:49:05,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2021-12-18 19:49:05,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.423728813559322) internal successors, (84), 73 states have internal predecessors, (84), 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) [2021-12-18 19:49:05,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2021-12-18 19:49:05,353 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 13 [2021-12-18 19:49:05,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:05,353 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2021-12-18 19:49:05,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-12-18 19:49:05,353 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2021-12-18 19:49:05,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-18 19:49:05,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:05,354 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:05,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:05,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:05,561 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:05,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:05,561 INFO L85 PathProgramCache]: Analyzing trace with hash 262068158, now seen corresponding path program 1 times [2021-12-18 19:49:05,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:05,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326762828] [2021-12-18 19:49:05,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:05,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:05,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:05,562 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:49:05,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-18 19:49:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:05,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 19:49:05,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:49:05,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:49:05,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:05,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326762828] [2021-12-18 19:49:05,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326762828] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:05,718 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:49:05,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-18 19:49:05,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568892092] [2021-12-18 19:49:05,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:05,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 19:49:05,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:05,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 19:49:05,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 19:49:05,719 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2021-12-18 19:49:05,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:05,874 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2021-12-18 19:49:05,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 19:49:05,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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 16 [2021-12-18 19:49:05,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:05,875 INFO L225 Difference]: With dead ends: 96 [2021-12-18 19:49:05,876 INFO L226 Difference]: Without dead ends: 96 [2021-12-18 19:49:05,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-18 19:49:05,876 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 73 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:05,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 166 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:49:05,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-18 19:49:05,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2021-12-18 19:49:05,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 89 states have internal predecessors, (103), 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) [2021-12-18 19:49:05,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2021-12-18 19:49:05,879 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 16 [2021-12-18 19:49:05,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:05,879 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-12-18 19:49:05,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2021-12-18 19:49:05,879 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2021-12-18 19:49:05,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-18 19:49:05,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:05,879 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:05,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:06,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:06,086 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:06,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:06,087 INFO L85 PathProgramCache]: Analyzing trace with hash -749049092, now seen corresponding path program 1 times [2021-12-18 19:49:06,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:06,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452216518] [2021-12-18 19:49:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:06,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:06,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:06,088 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:49:06,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-18 19:49:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:06,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-18 19:49:06,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:06,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:06,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:06,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452216518] [2021-12-18 19:49:06,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452216518] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:06,394 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:49:06,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-12-18 19:49:06,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414367542] [2021-12-18 19:49:06,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:06,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 19:49:06,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:06,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 19:49:06,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-18 19:49:06,396 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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) [2021-12-18 19:49:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:06,764 INFO L93 Difference]: Finished difference Result 112 states and 125 transitions. [2021-12-18 19:49:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 19:49:06,765 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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 16 [2021-12-18 19:49:06,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:06,765 INFO L225 Difference]: With dead ends: 112 [2021-12-18 19:49:06,766 INFO L226 Difference]: Without dead ends: 112 [2021-12-18 19:49:06,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-12-18 19:49:06,766 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 171 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:06,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 432 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 19:49:06,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-12-18 19:49:06,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 90. [2021-12-18 19:49:06,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 89 states have internal predecessors, (103), 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) [2021-12-18 19:49:06,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2021-12-18 19:49:06,768 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 16 [2021-12-18 19:49:06,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:06,768 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-12-18 19:49:06,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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) [2021-12-18 19:49:06,768 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2021-12-18 19:49:06,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-18 19:49:06,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:06,769 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2021-12-18 19:49:06,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-18 19:49:06,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:06,976 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:06,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:06,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1817992175, now seen corresponding path program 2 times [2021-12-18 19:49:06,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:06,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103037801] [2021-12-18 19:49:06,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 19:49:06,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:06,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:06,977 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:49:06,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-18 19:49:07,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 19:49:07,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 19:49:07,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-18 19:49:07,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:07,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 19:49:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:07,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:07,947 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:07,947 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:07,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103037801] [2021-12-18 19:49:07,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103037801] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:07,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:49:07,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-18 19:49:07,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107447021] [2021-12-18 19:49:07,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:07,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 19:49:07,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:07,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 19:49:07,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-12-18 19:49:07,948 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 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) [2021-12-18 19:49:10,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:10,182 INFO L93 Difference]: Finished difference Result 212 states and 238 transitions. [2021-12-18 19:49:10,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-18 19:49:10,183 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 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 18 [2021-12-18 19:49:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:10,184 INFO L225 Difference]: With dead ends: 212 [2021-12-18 19:49:10,184 INFO L226 Difference]: Without dead ends: 212 [2021-12-18 19:49:10,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2021-12-18 19:49:10,185 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 313 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:10,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 699 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 379 Invalid, 0 Unknown, 100 Unchecked, 1.2s Time] [2021-12-18 19:49:10,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-12-18 19:49:10,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 106. [2021-12-18 19:49:10,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 91 states have (on average 1.3516483516483517) internal successors, (123), 105 states have internal predecessors, (123), 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) [2021-12-18 19:49:10,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2021-12-18 19:49:10,189 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 18 [2021-12-18 19:49:10,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:10,189 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2021-12-18 19:49:10,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 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) [2021-12-18 19:49:10,189 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2021-12-18 19:49:10,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-18 19:49:10,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:10,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:10,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:10,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:10,390 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:10,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:10,391 INFO L85 PathProgramCache]: Analyzing trace with hash -302012765, now seen corresponding path program 1 times [2021-12-18 19:49:10,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:10,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324649816] [2021-12-18 19:49:10,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:10,392 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:10,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:10,393 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) [2021-12-18 19:49:10,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-18 19:49:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:10,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 19:49:10,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:10,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:49:10,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:10,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-12-18 19:49:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:49:10,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:10,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324649816] [2021-12-18 19:49:10,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324649816] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:10,717 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:49:10,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-12-18 19:49:10,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564933554] [2021-12-18 19:49:10,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:10,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 19:49:10,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:10,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 19:49:10,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-18 19:49:10,718 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 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) [2021-12-18 19:49:11,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:11,214 INFO L93 Difference]: Finished difference Result 163 states and 187 transitions. [2021-12-18 19:49:11,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 19:49:11,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 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 20 [2021-12-18 19:49:11,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:11,215 INFO L225 Difference]: With dead ends: 163 [2021-12-18 19:49:11,215 INFO L226 Difference]: Without dead ends: 163 [2021-12-18 19:49:11,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-18 19:49:11,216 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 176 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:11,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 133 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 19:49:11,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-18 19:49:11,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 117. [2021-12-18 19:49:11,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 103 states have (on average 1.3689320388349515) internal successors, (141), 116 states have internal predecessors, (141), 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) [2021-12-18 19:49:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 141 transitions. [2021-12-18 19:49:11,218 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 141 transitions. Word has length 20 [2021-12-18 19:49:11,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:11,219 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 141 transitions. [2021-12-18 19:49:11,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 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) [2021-12-18 19:49:11,219 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 141 transitions. [2021-12-18 19:49:11,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-18 19:49:11,219 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:11,219 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:11,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:11,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:11,426 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:11,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:11,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1581646975, now seen corresponding path program 2 times [2021-12-18 19:49:11,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:11,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20644612] [2021-12-18 19:49:11,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 19:49:11,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:11,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:11,428 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:49:11,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-18 19:49:11,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 19:49:11,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 19:49:11,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-18 19:49:11,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:11,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:49:11,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2021-12-18 19:49:11,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-12-18 19:49:11,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-18 19:49:11,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:11,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:49:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-18 19:49:12,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:12,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20644612] [2021-12-18 19:49:12,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20644612] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:12,046 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:49:12,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-12-18 19:49:12,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059752551] [2021-12-18 19:49:12,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:12,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 19:49:12,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:12,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 19:49:12,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-18 19:49:12,047 INFO L87 Difference]: Start difference. First operand 117 states and 141 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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) [2021-12-18 19:49:12,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:12,656 INFO L93 Difference]: Finished difference Result 156 states and 190 transitions. [2021-12-18 19:49:12,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 19:49:12,657 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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 20 [2021-12-18 19:49:12,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:12,658 INFO L225 Difference]: With dead ends: 156 [2021-12-18 19:49:12,658 INFO L226 Difference]: Without dead ends: 156 [2021-12-18 19:49:12,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-18 19:49:12,658 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 180 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:12,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 142 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 137 Invalid, 0 Unknown, 40 Unchecked, 0.5s Time] [2021-12-18 19:49:12,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-12-18 19:49:12,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 133. [2021-12-18 19:49:12,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 119 states have (on average 1.361344537815126) internal successors, (162), 132 states have internal predecessors, (162), 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) [2021-12-18 19:49:12,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 162 transitions. [2021-12-18 19:49:12,661 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 162 transitions. Word has length 20 [2021-12-18 19:49:12,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:12,661 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 162 transitions. [2021-12-18 19:49:12,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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) [2021-12-18 19:49:12,662 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 162 transitions. [2021-12-18 19:49:12,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-18 19:49:12,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:12,662 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:12,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:12,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:12,869 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:12,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:12,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1786415948, now seen corresponding path program 1 times [2021-12-18 19:49:12,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:12,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850642559] [2021-12-18 19:49:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:12,870 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:12,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:12,871 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) [2021-12-18 19:49:12,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-18 19:49:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:12,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-18 19:49:12,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:13,017 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-12-18 19:49:13,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2021-12-18 19:49:13,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-18 19:49:13,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-18 19:49:13,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:13,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850642559] [2021-12-18 19:49:13,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850642559] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:13,642 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:49:13,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-12-18 19:49:13,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649897257] [2021-12-18 19:49:13,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:13,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 19:49:13,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:13,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 19:49:13,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-18 19:49:13,644 INFO L87 Difference]: Start difference. First operand 133 states and 162 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 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) [2021-12-18 19:49:14,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:14,536 INFO L93 Difference]: Finished difference Result 153 states and 186 transitions. [2021-12-18 19:49:14,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 19:49:14,537 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 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 21 [2021-12-18 19:49:14,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:14,539 INFO L225 Difference]: With dead ends: 153 [2021-12-18 19:49:14,539 INFO L226 Difference]: Without dead ends: 153 [2021-12-18 19:49:14,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-12-18 19:49:14,540 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 91 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:14,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 257 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 194 Invalid, 0 Unknown, 64 Unchecked, 0.6s Time] [2021-12-18 19:49:14,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-18 19:49:14,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 134. [2021-12-18 19:49:14,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 120 states have (on average 1.35) internal successors, (162), 133 states have internal predecessors, (162), 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) [2021-12-18 19:49:14,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 162 transitions. [2021-12-18 19:49:14,542 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 162 transitions. Word has length 21 [2021-12-18 19:49:14,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:14,543 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 162 transitions. [2021-12-18 19:49:14,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 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) [2021-12-18 19:49:14,543 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 162 transitions. [2021-12-18 19:49:14,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-18 19:49:14,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:14,545 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:14,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:14,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:14,749 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:14,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:14,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1242696241, now seen corresponding path program 1 times [2021-12-18 19:49:14,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:14,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53976586] [2021-12-18 19:49:14,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:14,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:14,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:14,751 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:49:14,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-18 19:49:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:14,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-18 19:49:14,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:14,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 19:49:14,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-12-18 19:49:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:15,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:15,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:15,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53976586] [2021-12-18 19:49:15,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53976586] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:15,392 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:49:15,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-12-18 19:49:15,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300474998] [2021-12-18 19:49:15,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:15,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-18 19:49:15,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:15,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-18 19:49:15,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-12-18 19:49:15,394 INFO L87 Difference]: Start difference. First operand 134 states and 162 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 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) [2021-12-18 19:49:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:16,117 INFO L93 Difference]: Finished difference Result 197 states and 237 transitions. [2021-12-18 19:49:16,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 19:49:16,118 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 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 23 [2021-12-18 19:49:16,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:16,119 INFO L225 Difference]: With dead ends: 197 [2021-12-18 19:49:16,119 INFO L226 Difference]: Without dead ends: 197 [2021-12-18 19:49:16,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2021-12-18 19:49:16,119 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 450 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:16,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 346 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 19:49:16,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-18 19:49:16,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 125. [2021-12-18 19:49:16,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 111 states have (on average 1.3513513513513513) internal successors, (150), 124 states have internal predecessors, (150), 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) [2021-12-18 19:49:16,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 150 transitions. [2021-12-18 19:49:16,122 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 150 transitions. Word has length 23 [2021-12-18 19:49:16,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:16,122 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 150 transitions. [2021-12-18 19:49:16,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 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) [2021-12-18 19:49:16,122 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 150 transitions. [2021-12-18 19:49:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-18 19:49:16,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:16,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:16,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:16,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:16,323 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:16,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:16,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1547664583, now seen corresponding path program 1 times [2021-12-18 19:49:16,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:16,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83531482] [2021-12-18 19:49:16,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:16,324 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:16,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:16,325 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) [2021-12-18 19:49:16,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-18 19:49:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:16,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-18 19:49:16,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:16,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-12-18 19:49:16,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:49:16,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:49:16,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:49:16,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:49:16,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:49:16,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:49:16,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:49:16,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:49:16,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:49:16,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:49:16,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:49:16,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2021-12-18 19:49:16,524 INFO L388 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 45 treesize of output 41 [2021-12-18 19:49:16,654 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:49:16,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 26 [2021-12-18 19:49:16,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:49:16,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:16,771 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_342 (Array (_ BitVec 32) (_ BitVec 8)))) (bvslt |c_ULTIMATE.start_lis_~max~0#1| (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_342) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|))))) is different from false [2021-12-18 19:49:16,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:49:16,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:49:16,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:49:16,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:49:16,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:49:16,849 INFO L354 Elim1Store]: treesize reduction 303, result has 14.6 percent of original size [2021-12-18 19:49:16,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 203 treesize of output 95 [2021-12-18 19:49:16,947 INFO L354 Elim1Store]: treesize reduction 359, result has 10.3 percent of original size [2021-12-18 19:49:16,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 115 treesize of output 98 [2021-12-18 19:49:16,958 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-12-18 19:49:16,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 13 [2021-12-18 19:49:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:49:17,481 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:17,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83531482] [2021-12-18 19:49:17,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83531482] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:17,482 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:49:17,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-12-18 19:49:17,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517929403] [2021-12-18 19:49:17,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:17,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 19:49:17,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:17,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 19:49:17,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2021-12-18 19:49:17,483 INFO L87 Difference]: Start difference. First operand 125 states and 150 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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) [2021-12-18 19:49:18,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 19:49:18,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:18,953 INFO L93 Difference]: Finished difference Result 125 states and 149 transitions. [2021-12-18 19:49:18,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 19:49:18,955 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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 26 [2021-12-18 19:49:18,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:18,955 INFO L225 Difference]: With dead ends: 125 [2021-12-18 19:49:18,955 INFO L226 Difference]: Without dead ends: 125 [2021-12-18 19:49:18,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=131, Unknown=1, NotChecked=24, Total=210 [2021-12-18 19:49:18,956 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 11 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:18,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 326 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 120 Invalid, 0 Unknown, 76 Unchecked, 1.4s Time] [2021-12-18 19:49:18,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-18 19:49:18,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-12-18 19:49:18,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 111 states have (on average 1.3423423423423424) internal successors, (149), 124 states have internal predecessors, (149), 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) [2021-12-18 19:49:18,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 149 transitions. [2021-12-18 19:49:18,958 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 149 transitions. Word has length 26 [2021-12-18 19:49:18,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:18,959 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 149 transitions. [2021-12-18 19:49:18,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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) [2021-12-18 19:49:18,959 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 149 transitions. [2021-12-18 19:49:18,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-18 19:49:18,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:18,959 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:18,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:19,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:19,174 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:19,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:19,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1090844182, now seen corresponding path program 2 times [2021-12-18 19:49:19,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:19,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74872171] [2021-12-18 19:49:19,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 19:49:19,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:19,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:19,176 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) [2021-12-18 19:49:19,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-18 19:49:19,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 19:49:19,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 19:49:19,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 19:49:19,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:19,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 19:49:19,282 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-12-18 19:49:19,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 39 [2021-12-18 19:49:19,325 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 19:49:19,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:49:19,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:19,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74872171] [2021-12-18 19:49:19,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74872171] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:19,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:19,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 19:49:19,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676748387] [2021-12-18 19:49:19,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:19,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 19:49:19,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:19,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 19:49:19,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 19:49:19,326 INFO L87 Difference]: Start difference. First operand 125 states and 149 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-12-18 19:49:19,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:19,423 INFO L93 Difference]: Finished difference Result 123 states and 145 transitions. [2021-12-18 19:49:19,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 19:49:19,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 27 [2021-12-18 19:49:19,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:19,425 INFO L225 Difference]: With dead ends: 123 [2021-12-18 19:49:19,425 INFO L226 Difference]: Without dead ends: 123 [2021-12-18 19:49:19,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:49:19,425 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 83 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:19,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 51 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:49:19,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-18 19:49:19,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-12-18 19:49:19,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 111 states have (on average 1.3063063063063063) internal successors, (145), 122 states have internal predecessors, (145), 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) [2021-12-18 19:49:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2021-12-18 19:49:19,428 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 27 [2021-12-18 19:49:19,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:19,428 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2021-12-18 19:49:19,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-12-18 19:49:19,428 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2021-12-18 19:49:19,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-18 19:49:19,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:19,429 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:19,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-12-18 19:49:19,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:19,640 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:19,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:19,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1090844181, now seen corresponding path program 1 times [2021-12-18 19:49:19,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:19,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17301407] [2021-12-18 19:49:19,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:19,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:19,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:19,642 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) [2021-12-18 19:49:19,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-18 19:49:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:19,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-18 19:49:19,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:19,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 19:49:19,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 19:49:19,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:49:19,988 INFO L354 Elim1Store]: treesize reduction 28, result has 34.9 percent of original size [2021-12-18 19:49:19,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 30 [2021-12-18 19:49:20,004 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 19:49:20,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-18 19:49:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-18 19:49:20,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:21,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:49:21,355 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-12-18 19:49:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-18 19:49:21,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:21,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17301407] [2021-12-18 19:49:21,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17301407] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:21,360 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:49:21,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2021-12-18 19:49:21,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612517773] [2021-12-18 19:49:21,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:21,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 19:49:21,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:21,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 19:49:21,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-18 19:49:21,361 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 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) [2021-12-18 19:49:22,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:22,073 INFO L93 Difference]: Finished difference Result 146 states and 176 transitions. [2021-12-18 19:49:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-18 19:49:22,074 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 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 27 [2021-12-18 19:49:22,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:22,075 INFO L225 Difference]: With dead ends: 146 [2021-12-18 19:49:22,075 INFO L226 Difference]: Without dead ends: 146 [2021-12-18 19:49:22,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-12-18 19:49:22,075 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 8 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:22,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 243 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 85 Unchecked, 0.3s Time] [2021-12-18 19:49:22,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-18 19:49:22,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 126. [2021-12-18 19:49:22,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 114 states have (on average 1.3157894736842106) internal successors, (150), 125 states have internal predecessors, (150), 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) [2021-12-18 19:49:22,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 150 transitions. [2021-12-18 19:49:22,078 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 150 transitions. Word has length 27 [2021-12-18 19:49:22,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:22,078 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 150 transitions. [2021-12-18 19:49:22,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 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) [2021-12-18 19:49:22,078 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 150 transitions. [2021-12-18 19:49:22,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-18 19:49:22,079 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:22,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:22,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:22,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:22,287 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:22,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:22,287 INFO L85 PathProgramCache]: Analyzing trace with hash -397297604, now seen corresponding path program 1 times [2021-12-18 19:49:22,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:22,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862550498] [2021-12-18 19:49:22,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:22,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:22,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:22,289 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) [2021-12-18 19:49:22,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-18 19:49:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:22,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-18 19:49:22,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:29,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-18 19:49:29,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:49:29,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:29,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862550498] [2021-12-18 19:49:29,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862550498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:29,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:29,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 19:49:29,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927433028] [2021-12-18 19:49:29,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:29,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 19:49:29,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:29,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 19:49:29,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=26, Unknown=3, NotChecked=0, Total=42 [2021-12-18 19:49:29,440 INFO L87 Difference]: Start difference. First operand 126 states and 150 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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) [2021-12-18 19:49:29,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:29,488 INFO L93 Difference]: Finished difference Result 144 states and 172 transitions. [2021-12-18 19:49:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 19:49:29,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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 28 [2021-12-18 19:49:29,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:29,489 INFO L225 Difference]: With dead ends: 144 [2021-12-18 19:49:29,489 INFO L226 Difference]: Without dead ends: 119 [2021-12-18 19:49:29,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=13, Invalid=26, Unknown=3, NotChecked=0, Total=42 [2021-12-18 19:49:29,490 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 11 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:29,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 162 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 35 Unchecked, 0.0s Time] [2021-12-18 19:49:29,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-18 19:49:29,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2021-12-18 19:49:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 104 states have (on average 1.3653846153846154) internal successors, (142), 115 states have internal predecessors, (142), 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) [2021-12-18 19:49:29,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2021-12-18 19:49:29,492 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 28 [2021-12-18 19:49:29,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:29,492 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2021-12-18 19:49:29,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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) [2021-12-18 19:49:29,492 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2021-12-18 19:49:29,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-18 19:49:29,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:29,496 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:29,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-12-18 19:49:29,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:29,703 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:29,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:29,703 INFO L85 PathProgramCache]: Analyzing trace with hash 543568764, now seen corresponding path program 1 times [2021-12-18 19:49:29,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:29,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651235414] [2021-12-18 19:49:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:29,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:29,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:29,705 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) [2021-12-18 19:49:29,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-18 19:49:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:29,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 19:49:29,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 19:49:29,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:49:29,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:29,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651235414] [2021-12-18 19:49:29,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651235414] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:29,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:29,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 19:49:29,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383115334] [2021-12-18 19:49:29,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:29,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 19:49:29,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:29,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 19:49:29,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-18 19:49:29,882 INFO L87 Difference]: Start difference. First operand 116 states and 142 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-12-18 19:49:30,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:30,145 INFO L93 Difference]: Finished difference Result 166 states and 202 transitions. [2021-12-18 19:49:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 19:49:30,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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 28 [2021-12-18 19:49:30,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:30,147 INFO L225 Difference]: With dead ends: 166 [2021-12-18 19:49:30,147 INFO L226 Difference]: Without dead ends: 166 [2021-12-18 19:49:30,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-12-18 19:49:30,147 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 205 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:30,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 121 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 19:49:30,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-18 19:49:30,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 114. [2021-12-18 19:49:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 102 states have (on average 1.3431372549019607) internal successors, (137), 113 states have internal predecessors, (137), 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) [2021-12-18 19:49:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2021-12-18 19:49:30,150 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 28 [2021-12-18 19:49:30,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:30,150 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2021-12-18 19:49:30,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-12-18 19:49:30,150 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2021-12-18 19:49:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-18 19:49:30,151 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:30,151 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:30,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:30,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:30,355 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:30,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:30,356 INFO L85 PathProgramCache]: Analyzing trace with hash 590171529, now seen corresponding path program 3 times [2021-12-18 19:49:30,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:30,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293943932] [2021-12-18 19:49:30,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 19:49:30,356 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:30,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:30,357 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) [2021-12-18 19:49:30,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-18 19:49:30,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-18 19:49:30,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 19:49:30,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-18 19:49:30,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:30,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:49:30,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2021-12-18 19:49:30,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-12-18 19:49:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:30,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:31,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:49:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:32,116 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:32,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293943932] [2021-12-18 19:49:32,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293943932] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:32,116 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:49:32,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-12-18 19:49:32,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051323687] [2021-12-18 19:49:32,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:32,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-18 19:49:32,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:32,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-18 19:49:32,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-12-18 19:49:32,117 INFO L87 Difference]: Start difference. First operand 114 states and 137 transitions. Second operand has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 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) [2021-12-18 19:49:35,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:35,863 INFO L93 Difference]: Finished difference Result 204 states and 237 transitions. [2021-12-18 19:49:35,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 19:49:35,864 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 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 28 [2021-12-18 19:49:35,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:35,864 INFO L225 Difference]: With dead ends: 204 [2021-12-18 19:49:35,864 INFO L226 Difference]: Without dead ends: 190 [2021-12-18 19:49:35,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=268, Invalid=724, Unknown=0, NotChecked=0, Total=992 [2021-12-18 19:49:35,865 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 614 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:35,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 388 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-18 19:49:35,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-12-18 19:49:35,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 162. [2021-12-18 19:49:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 150 states have (on average 1.3133333333333332) internal successors, (197), 161 states have internal predecessors, (197), 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) [2021-12-18 19:49:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 197 transitions. [2021-12-18 19:49:35,868 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 197 transitions. Word has length 28 [2021-12-18 19:49:35,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:35,868 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 197 transitions. [2021-12-18 19:49:35,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 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) [2021-12-18 19:49:35,868 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 197 transitions. [2021-12-18 19:49:35,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-18 19:49:35,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:35,869 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:35,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:36,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:36,077 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:36,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:36,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1391261449, now seen corresponding path program 1 times [2021-12-18 19:49:36,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:36,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770711237] [2021-12-18 19:49:36,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:36,078 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:36,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:36,079 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) [2021-12-18 19:49:36,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-18 19:49:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:36,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 19:49:36,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 19:49:36,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:49:36,213 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:36,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770711237] [2021-12-18 19:49:36,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770711237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:36,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:36,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 19:49:36,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689387733] [2021-12-18 19:49:36,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:36,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 19:49:36,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:36,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 19:49:36,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 19:49:36,215 INFO L87 Difference]: Start difference. First operand 162 states and 197 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-12-18 19:49:36,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:36,226 INFO L93 Difference]: Finished difference Result 161 states and 194 transitions. [2021-12-18 19:49:36,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 19:49:36,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 32 [2021-12-18 19:49:36,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:36,227 INFO L225 Difference]: With dead ends: 161 [2021-12-18 19:49:36,227 INFO L226 Difference]: Without dead ends: 161 [2021-12-18 19:49:36,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 19:49:36,228 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:36,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 19:49:36,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-18 19:49:36,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-12-18 19:49:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 150 states have (on average 1.2933333333333332) internal successors, (194), 160 states have internal predecessors, (194), 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) [2021-12-18 19:49:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 194 transitions. [2021-12-18 19:49:36,232 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 194 transitions. Word has length 32 [2021-12-18 19:49:36,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:36,233 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 194 transitions. [2021-12-18 19:49:36,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-12-18 19:49:36,233 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 194 transitions. [2021-12-18 19:49:36,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-18 19:49:36,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:36,233 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:36,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:36,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:36,439 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:36,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:36,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1391252418, now seen corresponding path program 1 times [2021-12-18 19:49:36,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:36,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905193437] [2021-12-18 19:49:36,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:36,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:36,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:36,441 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) [2021-12-18 19:49:36,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-18 19:49:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:36,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 19:49:36,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-18 19:49:36,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:36,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-12-18 19:49:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-18 19:49:37,041 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:37,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905193437] [2021-12-18 19:49:37,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905193437] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:37,041 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:49:37,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-12-18 19:49:37,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074230023] [2021-12-18 19:49:37,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:37,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 19:49:37,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:37,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 19:49:37,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-18 19:49:37,042 INFO L87 Difference]: Start difference. First operand 161 states and 194 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 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) [2021-12-18 19:49:38,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:38,252 INFO L93 Difference]: Finished difference Result 576 states and 686 transitions. [2021-12-18 19:49:38,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-18 19:49:38,253 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 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 32 [2021-12-18 19:49:38,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:38,254 INFO L225 Difference]: With dead ends: 576 [2021-12-18 19:49:38,254 INFO L226 Difference]: Without dead ends: 576 [2021-12-18 19:49:38,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2021-12-18 19:49:38,255 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 862 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:38,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 227 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-18 19:49:38,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-12-18 19:49:38,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 224. [2021-12-18 19:49:38,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 214 states have (on average 1.3224299065420562) internal successors, (283), 223 states have internal predecessors, (283), 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) [2021-12-18 19:49:38,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 283 transitions. [2021-12-18 19:49:38,260 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 283 transitions. Word has length 32 [2021-12-18 19:49:38,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:38,260 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 283 transitions. [2021-12-18 19:49:38,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 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) [2021-12-18 19:49:38,260 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 283 transitions. [2021-12-18 19:49:38,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-18 19:49:38,261 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:38,261 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:38,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-12-18 19:49:38,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:38,463 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:38,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:38,464 INFO L85 PathProgramCache]: Analyzing trace with hash 795842271, now seen corresponding path program 2 times [2021-12-18 19:49:38,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:38,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163057952] [2021-12-18 19:49:38,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 19:49:38,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:38,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:38,466 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) [2021-12-18 19:49:38,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-18 19:49:38,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 19:49:38,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 19:49:38,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-18 19:49:38,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:38,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-12-18 19:49:38,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-18 19:49:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-18 19:49:38,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:40,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:49:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-18 19:49:40,893 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:40,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163057952] [2021-12-18 19:49:40,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163057952] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:40,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:49:40,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2021-12-18 19:49:40,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613622426] [2021-12-18 19:49:40,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:40,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 19:49:40,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:40,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 19:49:40,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 19:49:40,894 INFO L87 Difference]: Start difference. First operand 224 states and 283 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 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) [2021-12-18 19:49:41,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:41,178 INFO L93 Difference]: Finished difference Result 238 states and 304 transitions. [2021-12-18 19:49:41,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 19:49:41,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 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 33 [2021-12-18 19:49:41,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:41,180 INFO L225 Difference]: With dead ends: 238 [2021-12-18 19:49:41,180 INFO L226 Difference]: Without dead ends: 238 [2021-12-18 19:49:41,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-18 19:49:41,181 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 14 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:41,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 168 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 61 Unchecked, 0.2s Time] [2021-12-18 19:49:41,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-12-18 19:49:41,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 223. [2021-12-18 19:49:41,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 214 states have (on average 1.3177570093457944) internal successors, (282), 222 states have internal predecessors, (282), 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) [2021-12-18 19:49:41,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 282 transitions. [2021-12-18 19:49:41,184 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 282 transitions. Word has length 33 [2021-12-18 19:49:41,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:41,184 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 282 transitions. [2021-12-18 19:49:41,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 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) [2021-12-18 19:49:41,185 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 282 transitions. [2021-12-18 19:49:41,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-18 19:49:41,187 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:41,187 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2021-12-18 19:49:41,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:41,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:49:41,394 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:49:41,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:41,394 INFO L85 PathProgramCache]: Analyzing trace with hash -563143139, now seen corresponding path program 3 times [2021-12-18 19:49:41,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:49:41,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246911837] [2021-12-18 19:49:41,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 19:49:41,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:49:41,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:49:41,396 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) [2021-12-18 19:49:41,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-12-18 19:49:41,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-12-18 19:49:41,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 19:49:41,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-18 19:49:41,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:41,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 19:49:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:42,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:44,984 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:49:44,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246911837] [2021-12-18 19:49:44,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246911837] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:44,985 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:49:44,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-12-18 19:49:44,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050321789] [2021-12-18 19:49:44,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:44,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-18 19:49:44,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:49:44,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-18 19:49:44,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2021-12-18 19:49:44,986 INFO L87 Difference]: Start difference. First operand 223 states and 282 transitions. Second operand has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 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) [2021-12-18 19:49:49,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 19:50:03,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:50:03,185 INFO L93 Difference]: Finished difference Result 884 states and 1126 transitions. [2021-12-18 19:50:03,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-18 19:50:03,186 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 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 34 [2021-12-18 19:50:03,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:50:03,188 INFO L225 Difference]: With dead ends: 884 [2021-12-18 19:50:03,188 INFO L226 Difference]: Without dead ends: 884 [2021-12-18 19:50:03,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2021-12-18 19:50:03,189 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 1956 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-18 19:50:03,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1956 Valid, 1856 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1468 Invalid, 0 Unknown, 17 Unchecked, 5.4s Time] [2021-12-18 19:50:03,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2021-12-18 19:50:03,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 255. [2021-12-18 19:50:03,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 246 states have (on average 1.3089430894308942) internal successors, (322), 254 states have internal predecessors, (322), 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) [2021-12-18 19:50:03,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 322 transitions. [2021-12-18 19:50:03,194 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 322 transitions. Word has length 34 [2021-12-18 19:50:03,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:50:03,194 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 322 transitions. [2021-12-18 19:50:03,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 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) [2021-12-18 19:50:03,194 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 322 transitions. [2021-12-18 19:50:03,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-18 19:50:03,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:50:03,195 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-18 19:50:03,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-12-18 19:50:03,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:50:03,405 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:50:03,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:50:03,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1267793515, now seen corresponding path program 1 times [2021-12-18 19:50:03,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:50:03,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837085673] [2021-12-18 19:50:03,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:50:03,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:50:03,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:50:03,407 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) [2021-12-18 19:50:03,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-18 19:50:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:50:03,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 19:50:03,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:50:03,577 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 19:50:03,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:50:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 19:50:03,641 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:50:03,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837085673] [2021-12-18 19:50:03,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837085673] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:50:03,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:50:03,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-18 19:50:03,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959627383] [2021-12-18 19:50:03,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:50:03,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 19:50:03,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:50:03,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 19:50:03,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-18 19:50:03,642 INFO L87 Difference]: Start difference. First operand 255 states and 322 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2021-12-18 19:50:03,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:50:03,864 INFO L93 Difference]: Finished difference Result 251 states and 308 transitions. [2021-12-18 19:50:03,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 19:50:03,865 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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 34 [2021-12-18 19:50:03,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:50:03,865 INFO L225 Difference]: With dead ends: 251 [2021-12-18 19:50:03,870 INFO L226 Difference]: Without dead ends: 251 [2021-12-18 19:50:03,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-18 19:50:03,870 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 56 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 19:50:03,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 138 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 19:50:03,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-12-18 19:50:03,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 243. [2021-12-18 19:50:03,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 234 states have (on average 1.2863247863247864) internal successors, (301), 242 states have internal predecessors, (301), 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) [2021-12-18 19:50:03,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 301 transitions. [2021-12-18 19:50:03,874 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 301 transitions. Word has length 34 [2021-12-18 19:50:03,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:50:03,874 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 301 transitions. [2021-12-18 19:50:03,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2021-12-18 19:50:03,874 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 301 transitions. [2021-12-18 19:50:03,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-18 19:50:03,874 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:50:03,875 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:50:03,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-12-18 19:50:04,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:50:04,082 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:50:04,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:50:04,082 INFO L85 PathProgramCache]: Analyzing trace with hash 717604305, now seen corresponding path program 4 times [2021-12-18 19:50:04,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:50:04,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817382228] [2021-12-18 19:50:04,083 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-18 19:50:04,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:50:04,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:50:04,084 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) [2021-12-18 19:50:04,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-12-18 19:50:04,190 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-18 19:50:04,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 19:50:04,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-18 19:50:04,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:50:04,330 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-12-18 19:50:04,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2021-12-18 19:50:04,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-12-18 19:50:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:50:04,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:50:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:50:05,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:50:05,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817382228] [2021-12-18 19:50:05,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817382228] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:50:05,450 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:50:05,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2021-12-18 19:50:05,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924600402] [2021-12-18 19:50:05,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:50:05,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-18 19:50:05,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:50:05,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-18 19:50:05,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-12-18 19:50:05,451 INFO L87 Difference]: Start difference. First operand 243 states and 301 transitions. Second operand has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 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) [2021-12-18 19:50:12,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:50:12,331 INFO L93 Difference]: Finished difference Result 511 states and 635 transitions. [2021-12-18 19:50:12,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-18 19:50:12,333 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 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 36 [2021-12-18 19:50:12,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:50:12,334 INFO L225 Difference]: With dead ends: 511 [2021-12-18 19:50:12,334 INFO L226 Difference]: Without dead ends: 511 [2021-12-18 19:50:12,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=656, Invalid=2424, Unknown=0, NotChecked=0, Total=3080 [2021-12-18 19:50:12,335 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 743 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-18 19:50:12,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 977 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-18 19:50:12,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-12-18 19:50:12,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 350. [2021-12-18 19:50:12,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 341 states have (on average 1.3225806451612903) internal successors, (451), 349 states have internal predecessors, (451), 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) [2021-12-18 19:50:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 451 transitions. [2021-12-18 19:50:12,340 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 451 transitions. Word has length 36 [2021-12-18 19:50:12,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:50:12,340 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 451 transitions. [2021-12-18 19:50:12,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 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) [2021-12-18 19:50:12,341 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 451 transitions. [2021-12-18 19:50:12,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-18 19:50:12,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:50:12,341 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:50:12,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-12-18 19:50:12,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:50:12,551 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:50:12,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:50:12,552 INFO L85 PathProgramCache]: Analyzing trace with hash -282034220, now seen corresponding path program 5 times [2021-12-18 19:50:12,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:50:12,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882089766] [2021-12-18 19:50:12,552 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-18 19:50:12,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:50:12,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:50:12,553 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:50:12,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-12-18 19:50:12,759 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-18 19:50:12,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 19:50:12,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-18 19:50:12,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:50:12,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 19:50:13,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-12-18 19:50:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:50:13,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:50:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:50:14,372 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:50:14,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882089766] [2021-12-18 19:50:14,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882089766] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:50:14,372 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:50:14,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2021-12-18 19:50:14,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918046962] [2021-12-18 19:50:14,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:50:14,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-18 19:50:14,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:50:14,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-18 19:50:14,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2021-12-18 19:50:14,373 INFO L87 Difference]: Start difference. First operand 350 states and 451 transitions. Second operand has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 states have internal predecessors, (77), 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) [2021-12-18 19:50:18,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:50:18,299 INFO L93 Difference]: Finished difference Result 671 states and 858 transitions. [2021-12-18 19:50:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-18 19:50:18,299 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 states have internal predecessors, (77), 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 40 [2021-12-18 19:50:18,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:50:18,301 INFO L225 Difference]: With dead ends: 671 [2021-12-18 19:50:18,301 INFO L226 Difference]: Without dead ends: 671 [2021-12-18 19:50:18,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=600, Invalid=2592, Unknown=0, NotChecked=0, Total=3192 [2021-12-18 19:50:18,302 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 1148 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-18 19:50:18,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1148 Valid, 1312 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-18 19:50:18,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-12-18 19:50:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 517. [2021-12-18 19:50:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 508 states have (on average 1.3425196850393701) internal successors, (682), 516 states have internal predecessors, (682), 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) [2021-12-18 19:50:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 682 transitions. [2021-12-18 19:50:18,308 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 682 transitions. Word has length 40 [2021-12-18 19:50:18,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:50:18,309 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 682 transitions. [2021-12-18 19:50:18,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 states have internal predecessors, (77), 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) [2021-12-18 19:50:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 682 transitions. [2021-12-18 19:50:18,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-18 19:50:18,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:50:18,309 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:50:18,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-12-18 19:50:18,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:50:18,518 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:50:18,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:50:18,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1411874729, now seen corresponding path program 6 times [2021-12-18 19:50:18,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:50:18,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877754009] [2021-12-18 19:50:18,518 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-18 19:50:18,519 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:50:18,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:50:18,519 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:50:18,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-12-18 19:50:18,689 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-12-18 19:50:18,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 19:50:18,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-18 19:50:18,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:50:18,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:18,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2021-12-18 19:50:18,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-12-18 19:50:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-18 19:50:19,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:50:20,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-18 19:50:20,560 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:50:20,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877754009] [2021-12-18 19:50:20,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877754009] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:50:20,560 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:50:20,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-12-18 19:50:20,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007130980] [2021-12-18 19:50:20,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:50:20,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-18 19:50:20,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:50:20,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-18 19:50:20,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-12-18 19:50:20,561 INFO L87 Difference]: Start difference. First operand 517 states and 682 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 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) [2021-12-18 19:50:25,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:50:25,395 INFO L93 Difference]: Finished difference Result 773 states and 991 transitions. [2021-12-18 19:50:25,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-18 19:50:25,395 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 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 44 [2021-12-18 19:50:25,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:50:25,397 INFO L225 Difference]: With dead ends: 773 [2021-12-18 19:50:25,397 INFO L226 Difference]: Without dead ends: 773 [2021-12-18 19:50:25,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=395, Invalid=937, Unknown=0, NotChecked=0, Total=1332 [2021-12-18 19:50:25,398 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 676 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:50:25,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [676 Valid, 533 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 797 Invalid, 0 Unknown, 160 Unchecked, 2.1s Time] [2021-12-18 19:50:25,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2021-12-18 19:50:25,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 629. [2021-12-18 19:50:25,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 620 states have (on average 1.3112903225806452) internal successors, (813), 628 states have internal predecessors, (813), 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) [2021-12-18 19:50:25,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 813 transitions. [2021-12-18 19:50:25,404 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 813 transitions. Word has length 44 [2021-12-18 19:50:25,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:50:25,405 INFO L470 AbstractCegarLoop]: Abstraction has 629 states and 813 transitions. [2021-12-18 19:50:25,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 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) [2021-12-18 19:50:25,405 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 813 transitions. [2021-12-18 19:50:25,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-18 19:50:25,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:50:25,405 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:50:25,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-12-18 19:50:25,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:50:25,611 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:50:25,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:50:25,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2010106493, now seen corresponding path program 1 times [2021-12-18 19:50:25,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:50:25,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999428716] [2021-12-18 19:50:25,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:50:25,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:50:25,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:50:25,613 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:50:25,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-12-18 19:50:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:50:25,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-18 19:50:25,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:50:25,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 19:50:25,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-12-18 19:50:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-18 19:50:26,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:50:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-18 19:50:26,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:50:26,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999428716] [2021-12-18 19:50:26,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999428716] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:50:26,493 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:50:26,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-12-18 19:50:26,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396301339] [2021-12-18 19:50:26,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:50:26,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-18 19:50:26,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:50:26,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-18 19:50:26,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-12-18 19:50:26,494 INFO L87 Difference]: Start difference. First operand 629 states and 813 transitions. Second operand has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 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) [2021-12-18 19:50:27,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:50:27,178 INFO L93 Difference]: Finished difference Result 640 states and 817 transitions. [2021-12-18 19:50:27,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 19:50:27,178 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 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 44 [2021-12-18 19:50:27,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:50:27,180 INFO L225 Difference]: With dead ends: 640 [2021-12-18 19:50:27,180 INFO L226 Difference]: Without dead ends: 640 [2021-12-18 19:50:27,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2021-12-18 19:50:27,180 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 530 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 19:50:27,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 282 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 19:50:27,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-12-18 19:50:27,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 593. [2021-12-18 19:50:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 584 states have (on average 1.3116438356164384) internal successors, (766), 592 states have internal predecessors, (766), 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) [2021-12-18 19:50:27,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 766 transitions. [2021-12-18 19:50:27,190 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 766 transitions. Word has length 44 [2021-12-18 19:50:27,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:50:27,191 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 766 transitions. [2021-12-18 19:50:27,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 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) [2021-12-18 19:50:27,191 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 766 transitions. [2021-12-18 19:50:27,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-18 19:50:27,191 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:50:27,191 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:50:27,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-12-18 19:50:27,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:50:27,399 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:50:27,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:50:27,400 INFO L85 PathProgramCache]: Analyzing trace with hash -484234273, now seen corresponding path program 1 times [2021-12-18 19:50:27,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:50:27,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337865881] [2021-12-18 19:50:27,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:50:27,400 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:50:27,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:50:27,401 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:50:27,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-12-18 19:50:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:50:27,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-18 19:50:27,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:50:27,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 19:50:27,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 19:50:27,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:27,820 INFO L354 Elim1Store]: treesize reduction 28, result has 34.9 percent of original size [2021-12-18 19:50:27,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2021-12-18 19:50:27,830 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 19:50:27,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-18 19:50:28,536 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-18 19:50:28,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:50:31,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:31,138 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-12-18 19:50:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-18 19:50:31,144 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:50:31,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337865881] [2021-12-18 19:50:31,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337865881] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:50:31,144 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:50:31,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-12-18 19:50:31,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796641174] [2021-12-18 19:50:31,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:50:31,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-18 19:50:31,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:50:31,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-18 19:50:31,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-12-18 19:50:31,145 INFO L87 Difference]: Start difference. First operand 593 states and 766 transitions. Second operand has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 18 states have internal predecessors, (72), 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) [2021-12-18 19:50:32,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:50:32,263 INFO L93 Difference]: Finished difference Result 662 states and 845 transitions. [2021-12-18 19:50:32,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 19:50:32,264 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 18 states have internal predecessors, (72), 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 45 [2021-12-18 19:50:32,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:50:32,266 INFO L225 Difference]: With dead ends: 662 [2021-12-18 19:50:32,266 INFO L226 Difference]: Without dead ends: 662 [2021-12-18 19:50:32,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-12-18 19:50:32,266 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 89 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-18 19:50:32,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 411 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 340 Invalid, 0 Unknown, 119 Unchecked, 0.9s Time] [2021-12-18 19:50:32,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-12-18 19:50:32,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 617. [2021-12-18 19:50:32,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 608 states have (on average 1.3108552631578947) internal successors, (797), 616 states have internal predecessors, (797), 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) [2021-12-18 19:50:32,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 797 transitions. [2021-12-18 19:50:32,272 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 797 transitions. Word has length 45 [2021-12-18 19:50:32,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:50:32,272 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 797 transitions. [2021-12-18 19:50:32,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 18 states have internal predecessors, (72), 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) [2021-12-18 19:50:32,273 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 797 transitions. [2021-12-18 19:50:32,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-18 19:50:32,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:50:32,273 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:50:32,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-12-18 19:50:32,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:50:32,482 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:50:32,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:50:32,482 INFO L85 PathProgramCache]: Analyzing trace with hash -2126360568, now seen corresponding path program 1 times [2021-12-18 19:50:32,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:50:32,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884817965] [2021-12-18 19:50:32,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:50:32,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:50:32,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:50:32,483 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:50:32,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-12-18 19:50:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:50:32,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 19:50:32,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:50:32,741 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-18 19:50:32,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:50:32,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-12-18 19:50:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-18 19:50:33,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:50:33,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884817965] [2021-12-18 19:50:33,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884817965] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:50:33,203 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:50:33,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-12-18 19:50:33,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581969457] [2021-12-18 19:50:33,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:50:33,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 19:50:33,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:50:33,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 19:50:33,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-18 19:50:33,204 INFO L87 Difference]: Start difference. First operand 617 states and 797 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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) [2021-12-18 19:50:33,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:50:33,814 INFO L93 Difference]: Finished difference Result 802 states and 998 transitions. [2021-12-18 19:50:33,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 19:50:33,815 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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 46 [2021-12-18 19:50:33,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:50:33,817 INFO L225 Difference]: With dead ends: 802 [2021-12-18 19:50:33,817 INFO L226 Difference]: Without dead ends: 802 [2021-12-18 19:50:33,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2021-12-18 19:50:33,818 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 596 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 19:50:33,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 158 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 19:50:33,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2021-12-18 19:50:33,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 617. [2021-12-18 19:50:33,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 608 states have (on average 1.287828947368421) internal successors, (783), 616 states have internal predecessors, (783), 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) [2021-12-18 19:50:33,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 783 transitions. [2021-12-18 19:50:33,823 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 783 transitions. Word has length 46 [2021-12-18 19:50:33,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:50:33,824 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 783 transitions. [2021-12-18 19:50:33,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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) [2021-12-18 19:50:33,824 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 783 transitions. [2021-12-18 19:50:33,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-18 19:50:33,824 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:50:33,824 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:50:33,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-12-18 19:50:34,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:50:34,032 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:50:34,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:50:34,033 INFO L85 PathProgramCache]: Analyzing trace with hash -326352172, now seen corresponding path program 1 times [2021-12-18 19:50:34,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:50:34,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905200100] [2021-12-18 19:50:34,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:50:34,034 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:50:34,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:50:34,034 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:50:34,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-12-18 19:50:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:50:34,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-18 19:50:34,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:50:34,215 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-12-18 19:50:34,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2021-12-18 19:50:35,361 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-18 19:50:35,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:50:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-18 19:50:35,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:50:35,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905200100] [2021-12-18 19:50:35,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905200100] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:50:35,897 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:50:35,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2021-12-18 19:50:35,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012426176] [2021-12-18 19:50:35,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:50:35,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 19:50:35,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:50:35,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 19:50:35,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-18 19:50:35,898 INFO L87 Difference]: Start difference. First operand 617 states and 783 transitions. Second operand has 11 states, 10 states have (on average 7.2) internal successors, (72), 11 states have internal predecessors, (72), 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) [2021-12-18 19:50:36,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:50:36,253 INFO L93 Difference]: Finished difference Result 627 states and 789 transitions. [2021-12-18 19:50:36,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 19:50:36,254 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.2) internal successors, (72), 11 states have internal predecessors, (72), 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 46 [2021-12-18 19:50:36,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:50:36,255 INFO L225 Difference]: With dead ends: 627 [2021-12-18 19:50:36,255 INFO L226 Difference]: Without dead ends: 627 [2021-12-18 19:50:36,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-12-18 19:50:36,256 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 28 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 19:50:36,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 198 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 66 Unchecked, 0.3s Time] [2021-12-18 19:50:36,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-12-18 19:50:36,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 617. [2021-12-18 19:50:36,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 608 states have (on average 1.28125) internal successors, (779), 616 states have internal predecessors, (779), 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) [2021-12-18 19:50:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 779 transitions. [2021-12-18 19:50:36,262 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 779 transitions. Word has length 46 [2021-12-18 19:50:36,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:50:36,262 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 779 transitions. [2021-12-18 19:50:36,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.2) internal successors, (72), 11 states have internal predecessors, (72), 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) [2021-12-18 19:50:36,262 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 779 transitions. [2021-12-18 19:50:36,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-18 19:50:36,262 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:50:36,263 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:50:36,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-12-18 19:50:36,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:50:36,471 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:50:36,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:50:36,473 INFO L85 PathProgramCache]: Analyzing trace with hash 971260211, now seen corresponding path program 2 times [2021-12-18 19:50:36,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:50:36,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101185415] [2021-12-18 19:50:36,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 19:50:36,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:50:36,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:50:36,474 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:50:36,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-12-18 19:50:36,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 19:50:36,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 19:50:36,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-18 19:50:36,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:50:36,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 19:50:36,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 19:50:36,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:36,777 INFO L354 Elim1Store]: treesize reduction 28, result has 34.9 percent of original size [2021-12-18 19:50:36,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2021-12-18 19:50:36,787 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 19:50:36,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-18 19:50:37,104 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-18 19:50:37,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:50:42,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:42,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-18 19:50:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-18 19:50:42,522 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:50:42,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101185415] [2021-12-18 19:50:42,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101185415] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:50:42,523 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:50:42,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-12-18 19:50:42,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377085897] [2021-12-18 19:50:42,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:50:42,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 19:50:42,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:50:42,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 19:50:42,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-18 19:50:42,524 INFO L87 Difference]: Start difference. First operand 617 states and 779 transitions. Second operand has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 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) [2021-12-18 19:50:43,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:50:43,223 INFO L93 Difference]: Finished difference Result 628 states and 785 transitions. [2021-12-18 19:50:43,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 19:50:43,224 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 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 48 [2021-12-18 19:50:43,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:50:43,226 INFO L225 Difference]: With dead ends: 628 [2021-12-18 19:50:43,226 INFO L226 Difference]: Without dead ends: 628 [2021-12-18 19:50:43,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-12-18 19:50:43,226 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 75 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 19:50:43,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 137 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 124 Invalid, 0 Unknown, 114 Unchecked, 0.3s Time] [2021-12-18 19:50:43,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-12-18 19:50:43,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 593. [2021-12-18 19:50:43,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 584 states have (on average 1.2705479452054795) internal successors, (742), 592 states have internal predecessors, (742), 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) [2021-12-18 19:50:43,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 742 transitions. [2021-12-18 19:50:43,231 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 742 transitions. Word has length 48 [2021-12-18 19:50:43,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:50:43,232 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 742 transitions. [2021-12-18 19:50:43,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 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) [2021-12-18 19:50:43,232 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 742 transitions. [2021-12-18 19:50:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-18 19:50:43,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:50:43,233 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:50:43,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-12-18 19:50:43,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:50:43,439 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:50:43,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:50:43,439 INFO L85 PathProgramCache]: Analyzing trace with hash 551190470, now seen corresponding path program 2 times [2021-12-18 19:50:43,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:50:43,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25311249] [2021-12-18 19:50:43,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 19:50:43,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:50:43,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:50:43,441 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:50:43,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-12-18 19:50:43,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 19:50:43,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 19:50:43,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-18 19:50:43,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:50:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-18 19:50:49,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:50:49,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:50:49,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25311249] [2021-12-18 19:50:49,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25311249] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:50:49,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:50:49,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 19:50:49,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55768154] [2021-12-18 19:50:49,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:50:49,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 19:50:49,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:50:49,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 19:50:49,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2021-12-18 19:50:49,210 INFO L87 Difference]: Start difference. First operand 593 states and 742 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-12-18 19:50:49,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:50:49,236 INFO L93 Difference]: Finished difference Result 818 states and 1039 transitions. [2021-12-18 19:50:49,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 19:50:49,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 48 [2021-12-18 19:50:49,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:50:49,238 INFO L225 Difference]: With dead ends: 818 [2021-12-18 19:50:49,238 INFO L226 Difference]: Without dead ends: 813 [2021-12-18 19:50:49,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2021-12-18 19:50:49,239 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 19:50:49,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 145 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2021-12-18 19:50:49,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-12-18 19:50:49,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 779. [2021-12-18 19:50:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 770 states have (on average 1.2948051948051948) internal successors, (997), 778 states have internal predecessors, (997), 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) [2021-12-18 19:50:49,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 997 transitions. [2021-12-18 19:50:49,246 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 997 transitions. Word has length 48 [2021-12-18 19:50:49,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:50:49,246 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 997 transitions. [2021-12-18 19:50:49,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-12-18 19:50:49,247 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 997 transitions. [2021-12-18 19:50:49,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-18 19:50:49,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:50:49,247 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:50:49,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2021-12-18 19:50:49,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:50:49,454 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:50:49,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:50:49,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2032220791, now seen corresponding path program 1 times [2021-12-18 19:50:49,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:50:49,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203593207] [2021-12-18 19:50:49,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:50:49,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:50:49,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:50:49,456 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:50:49,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-12-18 19:50:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:50:49,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-18 19:50:49,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:50:49,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-12-18 19:50:49,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:49,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:49,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 52 [2021-12-18 19:50:49,741 INFO L388 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 58 treesize of output 54 [2021-12-18 19:50:49,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:49,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 87 [2021-12-18 19:50:49,874 INFO L388 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 45 treesize of output 41 [2021-12-18 19:50:50,125 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:50:50,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 26 [2021-12-18 19:50:50,149 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-18 19:50:50,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:50:50,300 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1326 (Array (_ BitVec 32) (_ BitVec 8)))) (bvslt |c_ULTIMATE.start_lis_~max~0#1| (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1326) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|))))) is different from false [2021-12-18 19:50:50,320 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1323 (_ BitVec 8)) (v_ArrVal_1322 (_ BitVec 8)) (v_ArrVal_1324 (_ BitVec 8)) (v_ArrVal_1321 (_ BitVec 8)) (v_ArrVal_1326 (Array (_ BitVec 32) (_ BitVec 8)))) (bvslt |c_ULTIMATE.start_lis_~max~0#1| (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse1 (bvmul |c_ULTIMATE.start_lis_~i~0#1| (_ bv4 32)))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset|) v_ArrVal_1322) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)) v_ArrVal_1321) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)) v_ArrVal_1324) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32)) v_ArrVal_1323))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1326) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|))))) is different from false [2021-12-18 19:50:50,346 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1323 (_ BitVec 8)) (v_ArrVal_1322 (_ BitVec 8)) (v_ArrVal_1324 (_ BitVec 8)) (v_ArrVal_1321 (_ BitVec 8)) (v_ArrVal_1326 (Array (_ BitVec 32) (_ BitVec 8)))) (bvslt |c_ULTIMATE.start_lis_~max~0#1| (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse1 (bvmul |c_ULTIMATE.start_lis_~i~0#1| (_ bv4 32)))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)) v_ArrVal_1322) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) v_ArrVal_1321) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)) v_ArrVal_1324) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) v_ArrVal_1323))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1326) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|))))) is different from false [2021-12-18 19:50:50,365 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1323 (_ BitVec 8)) (v_ArrVal_1322 (_ BitVec 8)) (v_ArrVal_1320 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1324 (_ BitVec 8)) (v_ArrVal_1321 (_ BitVec 8)) (v_ArrVal_1326 (Array (_ BitVec 32) (_ BitVec 8)))) (bvslt |c_ULTIMATE.start_lis_~max~0#1| (let ((.cse0 (select (store (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1320))) (store .cse1 |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse2 (bvmul |c_ULTIMATE.start_lis_~i~0#1| (_ bv4 32)))) (store (store (store (store (select .cse1 |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)) v_ArrVal_1322) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) v_ArrVal_1321) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)) v_ArrVal_1324) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) v_ArrVal_1323)))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1326) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|))))) is different from false [2021-12-18 19:50:50,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:50,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:50:50,459 INFO L354 Elim1Store]: treesize reduction 303, result has 14.6 percent of original size [2021-12-18 19:50:50,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 535 treesize of output 267 [2021-12-18 19:50:50,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 437 treesize of output 421 [2021-12-18 19:50:50,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,553 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:50:50,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 694 treesize of output 612 [2021-12-18 19:50:50,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 727 treesize of output 699 [2021-12-18 19:50:50,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:50:50,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 635 treesize of output 523 [2021-12-18 19:50:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 5 not checked. [2021-12-18 19:50:53,106 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:50:53,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203593207] [2021-12-18 19:50:53,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203593207] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:50:53,106 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:50:53,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-12-18 19:50:53,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903528449] [2021-12-18 19:50:53,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:50:53,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-18 19:50:53,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:50:53,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-18 19:50:53,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=119, Unknown=4, NotChecked=100, Total=272 [2021-12-18 19:50:53,107 INFO L87 Difference]: Start difference. First operand 779 states and 997 transitions. Second operand has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 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) [2021-12-18 19:50:53,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:50:53,876 INFO L93 Difference]: Finished difference Result 1021 states and 1318 transitions. [2021-12-18 19:50:53,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 19:50:53,886 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 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 50 [2021-12-18 19:50:53,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:50:53,888 INFO L225 Difference]: With dead ends: 1021 [2021-12-18 19:50:53,888 INFO L226 Difference]: Without dead ends: 1021 [2021-12-18 19:50:53,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=179, Unknown=4, NotChecked=124, Total=380 [2021-12-18 19:50:53,888 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 20 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 331 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 19:50:53,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 324 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 154 Invalid, 0 Unknown, 331 Unchecked, 0.6s Time] [2021-12-18 19:50:53,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2021-12-18 19:50:53,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 914. [2021-12-18 19:50:53,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 905 states have (on average 1.3082872928176796) internal successors, (1184), 913 states have internal predecessors, (1184), 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) [2021-12-18 19:50:53,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1184 transitions. [2021-12-18 19:50:53,896 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1184 transitions. Word has length 50 [2021-12-18 19:50:53,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:50:53,896 INFO L470 AbstractCegarLoop]: Abstraction has 914 states and 1184 transitions. [2021-12-18 19:50:53,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 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) [2021-12-18 19:50:53,896 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1184 transitions. [2021-12-18 19:50:53,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-18 19:50:53,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:50:53,897 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:50:53,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-12-18 19:50:54,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:50:54,106 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:50:54,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:50:54,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1349955383, now seen corresponding path program 2 times [2021-12-18 19:50:54,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:50:54,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005301880] [2021-12-18 19:50:54,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 19:50:54,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:50:54,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:50:54,108 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:50:54,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-12-18 19:50:54,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 19:50:54,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 19:50:54,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-18 19:50:54,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:50:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-18 19:50:59,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 19:50:59,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:50:59,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005301880] [2021-12-18 19:50:59,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005301880] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:50:59,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:50:59,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 19:50:59,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822539958] [2021-12-18 19:50:59,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:50:59,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 19:50:59,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:50:59,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 19:50:59,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=28, Unknown=1, NotChecked=0, Total=42 [2021-12-18 19:50:59,866 INFO L87 Difference]: Start difference. First operand 914 states and 1184 transitions. Second operand has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 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) [2021-12-18 19:50:59,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:50:59,895 INFO L93 Difference]: Finished difference Result 1086 states and 1400 transitions. [2021-12-18 19:50:59,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 19:50:59,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 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 50 [2021-12-18 19:50:59,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:50:59,897 INFO L225 Difference]: With dead ends: 1086 [2021-12-18 19:50:59,897 INFO L226 Difference]: Without dead ends: 1034 [2021-12-18 19:50:59,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=13, Invalid=28, Unknown=1, NotChecked=0, Total=42 [2021-12-18 19:50:59,898 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 19:50:59,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 213 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 47 Unchecked, 0.0s Time] [2021-12-18 19:50:59,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2021-12-18 19:50:59,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 977. [2021-12-18 19:50:59,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 968 states have (on average 1.31198347107438) internal successors, (1270), 976 states have internal predecessors, (1270), 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) [2021-12-18 19:50:59,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1270 transitions. [2021-12-18 19:50:59,906 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1270 transitions. Word has length 50 [2021-12-18 19:50:59,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:50:59,906 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1270 transitions. [2021-12-18 19:50:59,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 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) [2021-12-18 19:50:59,906 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1270 transitions. [2021-12-18 19:50:59,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-18 19:50:59,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:50:59,907 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:50:59,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2021-12-18 19:51:00,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:51:00,114 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:51:00,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:51:00,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1278180873, now seen corresponding path program 3 times [2021-12-18 19:51:00,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:51:00,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832414305] [2021-12-18 19:51:00,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 19:51:00,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:51:00,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:51:00,116 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:51:00,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-12-18 19:51:00,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-18 19:51:00,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 19:51:00,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-18 19:51:00,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:51:00,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 19:51:00,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 19:51:00,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:00,462 INFO L354 Elim1Store]: treesize reduction 28, result has 34.9 percent of original size [2021-12-18 19:51:00,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2021-12-18 19:51:00,480 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 19:51:00,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-18 19:51:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-18 19:51:00,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:51:02,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:02,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-18 19:51:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-18 19:51:02,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:51:02,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832414305] [2021-12-18 19:51:02,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832414305] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:51:02,087 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:51:02,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-18 19:51:02,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243878664] [2021-12-18 19:51:02,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:51:02,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 19:51:02,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:51:02,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 19:51:02,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-12-18 19:51:02,088 INFO L87 Difference]: Start difference. First operand 977 states and 1270 transitions. Second operand has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 14 states have internal predecessors, (68), 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) [2021-12-18 19:51:03,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:51:03,407 INFO L93 Difference]: Finished difference Result 1306 states and 1657 transitions. [2021-12-18 19:51:03,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 19:51:03,408 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 14 states have internal predecessors, (68), 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 52 [2021-12-18 19:51:03,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:51:03,411 INFO L225 Difference]: With dead ends: 1306 [2021-12-18 19:51:03,411 INFO L226 Difference]: Without dead ends: 1306 [2021-12-18 19:51:03,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-12-18 19:51:03,411 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 217 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-18 19:51:03,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 207 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 208 Invalid, 0 Unknown, 95 Unchecked, 0.8s Time] [2021-12-18 19:51:03,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2021-12-18 19:51:03,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1146. [2021-12-18 19:51:03,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1137 states have (on average 1.2937554969217238) internal successors, (1471), 1145 states have internal predecessors, (1471), 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) [2021-12-18 19:51:03,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1471 transitions. [2021-12-18 19:51:03,421 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1471 transitions. Word has length 52 [2021-12-18 19:51:03,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:51:03,421 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 1471 transitions. [2021-12-18 19:51:03,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 14 states have internal predecessors, (68), 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) [2021-12-18 19:51:03,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1471 transitions. [2021-12-18 19:51:03,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-18 19:51:03,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:51:03,422 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:51:03,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-12-18 19:51:03,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:51:03,629 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:51:03,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:51:03,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1986422419, now seen corresponding path program 1 times [2021-12-18 19:51:03,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:51:03,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143524724] [2021-12-18 19:51:03,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:51:03,630 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:51:03,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:51:03,631 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:51:03,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-12-18 19:51:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:51:03,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-18 19:51:03,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:51:03,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-12-18 19:51:03,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:03,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:03,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:03,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:03,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:03,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:03,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:03,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:03,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:03,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:03,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:03,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 52 [2021-12-18 19:51:03,931 INFO L388 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 58 treesize of output 54 [2021-12-18 19:51:04,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:04,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:04,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:04,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 91 [2021-12-18 19:51:04,096 INFO L388 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 85 treesize of output 73 [2021-12-18 19:51:04,501 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:51:04,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 115 treesize of output 51 [2021-12-18 19:51:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 19:51:04,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:51:05,004 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1482 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1482) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)))) (bvadd (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (_ bv1 32))))) is different from false [2021-12-18 19:51:05,044 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1482 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse1 (bvmul |c_ULTIMATE.start_lis_~i~0#1| (_ bv4 32)))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset|) ((_ extract 7 0) (_ bv1 32))) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)) ((_ extract 15 8) (_ bv1 32))) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)) ((_ extract 23 16) (_ bv1 32))) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32)) ((_ extract 31 24) (_ bv1 32))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1482) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)))) (bvadd (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (_ bv1 32))))) is different from false [2021-12-18 19:51:05,105 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1482 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse1 (bvmul |c_ULTIMATE.start_lis_~i~0#1| (_ bv4 32)))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)) ((_ extract 7 0) (_ bv1 32))) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) ((_ extract 15 8) (_ bv1 32))) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)) ((_ extract 23 16) (_ bv1 32))) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) ((_ extract 31 24) (_ bv1 32))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1482) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)))) (bvadd (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (_ bv1 32))))) is different from false [2021-12-18 19:51:05,179 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1482 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1476 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1476))) (store .cse1 |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse2 (bvmul |c_ULTIMATE.start_lis_~i~0#1| (_ bv4 32)))) (store (store (store (store (select .cse1 |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)) ((_ extract 7 0) (_ bv1 32))) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) ((_ extract 15 8) (_ bv1 32))) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)) ((_ extract 23 16) (_ bv1 32))) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) ((_ extract 31 24) (_ bv1 32)))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1482) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)))) (bvadd (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (_ bv1 32))))) is different from false [2021-12-18 19:51:05,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:05,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:05,280 INFO L354 Elim1Store]: treesize reduction 303, result has 14.6 percent of original size [2021-12-18 19:51:05,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 1103 treesize of output 515 [2021-12-18 19:51:05,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 861 treesize of output 837 [2021-12-18 19:51:05,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 15393 treesize of output 11553 [2021-12-18 19:51:05,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 11951 treesize of output 11891 [2021-12-18 19:51:05,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:05,844 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:51:05,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 58 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 8 case distinctions, treesize of input 15408 treesize of output 11657 [2021-12-18 19:51:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 5 not checked. [2021-12-18 19:51:10,691 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:51:10,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143524724] [2021-12-18 19:51:10,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143524724] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:51:10,692 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:51:10,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-12-18 19:51:10,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731148316] [2021-12-18 19:51:10,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:51:10,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-18 19:51:10,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:51:10,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-18 19:51:10,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=292, Unknown=4, NotChecked=148, Total=506 [2021-12-18 19:51:10,692 INFO L87 Difference]: Start difference. First operand 1146 states and 1471 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 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) [2021-12-18 19:51:13,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 19:51:14,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:51:14,263 INFO L93 Difference]: Finished difference Result 1205 states and 1528 transitions. [2021-12-18 19:51:14,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 19:51:14,264 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 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 53 [2021-12-18 19:51:14,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:51:14,266 INFO L225 Difference]: With dead ends: 1205 [2021-12-18 19:51:14,266 INFO L226 Difference]: Without dead ends: 1205 [2021-12-18 19:51:14,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=156, Invalid=668, Unknown=4, NotChecked=228, Total=1056 [2021-12-18 19:51:14,267 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 92 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 278 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-18 19:51:14,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 580 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 501 Invalid, 1 Unknown, 278 Unchecked, 3.0s Time] [2021-12-18 19:51:14,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2021-12-18 19:51:14,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1115. [2021-12-18 19:51:14,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1106 states have (on average 1.2929475587703436) internal successors, (1430), 1114 states have internal predecessors, (1430), 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) [2021-12-18 19:51:14,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1430 transitions. [2021-12-18 19:51:14,276 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1430 transitions. Word has length 53 [2021-12-18 19:51:14,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:51:14,276 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1430 transitions. [2021-12-18 19:51:14,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 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) [2021-12-18 19:51:14,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1430 transitions. [2021-12-18 19:51:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-18 19:51:14,277 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:51:14,277 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:51:14,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-12-18 19:51:14,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:51:14,478 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:51:14,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:51:14,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1956787805, now seen corresponding path program 1 times [2021-12-18 19:51:14,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:51:14,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125720984] [2021-12-18 19:51:14,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:51:14,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:51:14,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:51:14,479 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:51:14,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-12-18 19:51:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:51:14,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 19:51:14,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:51:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-18 19:51:14,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:51:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-18 19:51:14,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:51:14,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125720984] [2021-12-18 19:51:14,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125720984] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:51:14,765 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:51:14,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-18 19:51:14,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125649685] [2021-12-18 19:51:14,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:51:14,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 19:51:14,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:51:14,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 19:51:14,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-18 19:51:14,766 INFO L87 Difference]: Start difference. First operand 1115 states and 1430 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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) [2021-12-18 19:51:15,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:51:15,024 INFO L93 Difference]: Finished difference Result 1168 states and 1455 transitions. [2021-12-18 19:51:15,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 19:51:15,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 55 [2021-12-18 19:51:15,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:51:15,027 INFO L225 Difference]: With dead ends: 1168 [2021-12-18 19:51:15,027 INFO L226 Difference]: Without dead ends: 1168 [2021-12-18 19:51:15,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-12-18 19:51:15,028 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 252 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 19:51:15,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 121 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 19:51:15,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-12-18 19:51:15,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1115. [2021-12-18 19:51:15,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1106 states have (on average 1.2631103074141048) internal successors, (1397), 1114 states have internal predecessors, (1397), 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) [2021-12-18 19:51:15,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1397 transitions. [2021-12-18 19:51:15,036 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1397 transitions. Word has length 55 [2021-12-18 19:51:15,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:51:15,037 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1397 transitions. [2021-12-18 19:51:15,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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) [2021-12-18 19:51:15,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1397 transitions. [2021-12-18 19:51:15,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-18 19:51:15,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:51:15,037 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:51:15,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-12-18 19:51:15,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:51:15,246 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:51:15,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:51:15,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1921263913, now seen corresponding path program 1 times [2021-12-18 19:51:15,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:51:15,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512685582] [2021-12-18 19:51:15,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:51:15,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:51:15,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:51:15,248 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:51:15,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-12-18 19:51:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:51:15,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 19:51:15,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:51:15,613 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-18 19:51:15,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:51:15,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-12-18 19:51:16,124 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-18 19:51:16,125 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:51:16,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512685582] [2021-12-18 19:51:16,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512685582] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:51:16,125 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:51:16,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-12-18 19:51:16,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920353809] [2021-12-18 19:51:16,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:51:16,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 19:51:16,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:51:16,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 19:51:16,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-12-18 19:51:16,126 INFO L87 Difference]: Start difference. First operand 1115 states and 1397 transitions. Second operand has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 12 states have internal predecessors, (75), 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) [2021-12-18 19:51:16,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:51:16,795 INFO L93 Difference]: Finished difference Result 1271 states and 1575 transitions. [2021-12-18 19:51:16,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 19:51:16,796 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 12 states have internal predecessors, (75), 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 55 [2021-12-18 19:51:16,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:51:16,798 INFO L225 Difference]: With dead ends: 1271 [2021-12-18 19:51:16,798 INFO L226 Difference]: Without dead ends: 1271 [2021-12-18 19:51:16,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2021-12-18 19:51:16,802 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 382 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 19:51:16,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 149 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 19:51:16,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2021-12-18 19:51:16,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 988. [2021-12-18 19:51:16,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 980 states have (on average 1.2418367346938775) internal successors, (1217), 987 states have internal predecessors, (1217), 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) [2021-12-18 19:51:16,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1217 transitions. [2021-12-18 19:51:16,810 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1217 transitions. Word has length 55 [2021-12-18 19:51:16,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:51:16,810 INFO L470 AbstractCegarLoop]: Abstraction has 988 states and 1217 transitions. [2021-12-18 19:51:16,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 12 states have internal predecessors, (75), 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) [2021-12-18 19:51:16,811 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1217 transitions. [2021-12-18 19:51:16,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-18 19:51:16,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:51:16,811 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:51:16,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-12-18 19:51:17,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:51:17,022 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:51:17,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:51:17,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1472253864, now seen corresponding path program 1 times [2021-12-18 19:51:17,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:51:17,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508132640] [2021-12-18 19:51:17,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:51:17,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:51:17,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:51:17,023 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:51:17,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-12-18 19:51:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:51:17,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-18 19:51:17,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:51:17,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-12-18 19:51:17,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:17,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:17,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 52 [2021-12-18 19:51:17,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2021-12-18 19:51:17,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 87 [2021-12-18 19:51:17,505 INFO L388 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 45 treesize of output 41 [2021-12-18 19:51:17,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:17,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 87 [2021-12-18 19:51:17,874 INFO L388 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 45 treesize of output 41 [2021-12-18 19:51:18,007 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:51:18,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 26 [2021-12-18 19:51:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-18 19:51:18,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:51:18,147 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 8)))) (bvslt |c_ULTIMATE.start_lis_~max~0#1| (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|))))) is different from false [2021-12-18 19:51:18,175 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1653 (_ BitVec 8)) (v_ArrVal_1652 (_ BitVec 8)) (v_ArrVal_1654 (_ BitVec 8)) (v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1650 (_ BitVec 8))) (bvslt |c_ULTIMATE.start_lis_~max~0#1| (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse1 (bvmul |c_ULTIMATE.start_lis_~i~0#1| (_ bv4 32)))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset|) v_ArrVal_1650) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)) v_ArrVal_1653) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)) v_ArrVal_1652) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32)) v_ArrVal_1654))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|))))) is different from false [2021-12-18 19:51:18,267 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1653 (_ BitVec 8)) (v_ArrVal_1652 (_ BitVec 8)) (v_ArrVal_1654 (_ BitVec 8)) (v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1650 (_ BitVec 8))) (bvslt |c_ULTIMATE.start_lis_~max~0#1| (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)) v_ArrVal_1650) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) v_ArrVal_1653) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)) v_ArrVal_1652) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) v_ArrVal_1654)) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|))))) is different from false [2021-12-18 19:51:18,296 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1649 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1653 (_ BitVec 8)) (v_ArrVal_1652 (_ BitVec 8)) (v_ArrVal_1654 (_ BitVec 8)) (v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1650 (_ BitVec 8))) (bvslt |c_ULTIMATE.start_lis_~max~0#1| (let ((.cse0 (select (store (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1649))) (store .cse1 |c_ULTIMATE.start_lis_~best~0#1.base| (store (store (store (store (select .cse1 |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)) v_ArrVal_1650) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) v_ArrVal_1653) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)) v_ArrVal_1652) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) v_ArrVal_1654))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|))))) is different from false [2021-12-18 19:51:18,318 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1645 (_ BitVec 8)) (v_ArrVal_1649 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1648 (_ BitVec 8)) (v_ArrVal_1647 (_ BitVec 8)) (v_ArrVal_1653 (_ BitVec 8)) (v_ArrVal_1652 (_ BitVec 8)) (v_ArrVal_1644 (_ BitVec 8)) (v_ArrVal_1654 (_ BitVec 8)) (v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1650 (_ BitVec 8))) (bvslt |c_ULTIMATE.start_lis_~max~0#1| (let ((.cse0 (select (store (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse2 (bvmul |c_ULTIMATE.start_lis_~i~0#1| (_ bv4 32)))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset|) v_ArrVal_1645) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)) v_ArrVal_1644) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)) v_ArrVal_1648) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32)) v_ArrVal_1647))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1649))) (store .cse1 |c_ULTIMATE.start_lis_~best~0#1.base| (store (store (store (store (select .cse1 |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)) v_ArrVal_1650) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) v_ArrVal_1653) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)) v_ArrVal_1652) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) v_ArrVal_1654))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|))))) is different from false [2021-12-18 19:51:18,348 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1645 (_ BitVec 8)) (v_ArrVal_1649 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1648 (_ BitVec 8)) (v_ArrVal_1647 (_ BitVec 8)) (v_ArrVal_1653 (_ BitVec 8)) (v_ArrVal_1652 (_ BitVec 8)) (v_ArrVal_1644 (_ BitVec 8)) (v_ArrVal_1654 (_ BitVec 8)) (v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1650 (_ BitVec 8))) (bvslt |c_ULTIMATE.start_lis_~max~0#1| (let ((.cse0 (select (store (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse2 (bvmul |c_ULTIMATE.start_lis_~i~0#1| (_ bv4 32)))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)) v_ArrVal_1645) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) v_ArrVal_1644) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)) v_ArrVal_1648) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) v_ArrVal_1647))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1649))) (store .cse1 |c_ULTIMATE.start_lis_~best~0#1.base| (store (store (store (store (select .cse1 |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)) v_ArrVal_1650) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) v_ArrVal_1653) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)) v_ArrVal_1652) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) v_ArrVal_1654))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|))))) is different from false [2021-12-18 19:51:18,367 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1645 (_ BitVec 8)) (v_ArrVal_1649 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1648 (_ BitVec 8)) (v_ArrVal_1647 (_ BitVec 8)) (v_ArrVal_1653 (_ BitVec 8)) (v_ArrVal_1652 (_ BitVec 8)) (v_ArrVal_1644 (_ BitVec 8)) (v_ArrVal_1654 (_ BitVec 8)) (v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1643 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1650 (_ BitVec 8))) (bvslt |c_ULTIMATE.start_lis_~max~0#1| (let ((.cse0 (select (store (let ((.cse1 (store (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1643))) (store .cse2 |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse3 (bvmul |c_ULTIMATE.start_lis_~i~0#1| (_ bv4 32)))) (store (store (store (store (select .cse2 |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd .cse3 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)) v_ArrVal_1645) (bvadd .cse3 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) v_ArrVal_1644) (bvadd .cse3 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)) v_ArrVal_1648) (bvadd .cse3 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) v_ArrVal_1647)))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1649))) (store .cse1 |c_ULTIMATE.start_lis_~best~0#1.base| (store (store (store (store (select .cse1 |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)) v_ArrVal_1650) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) v_ArrVal_1653) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)) v_ArrVal_1652) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) v_ArrVal_1654))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1655) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|))))) is different from false [2021-12-18 19:51:18,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:18,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:18,452 INFO L354 Elim1Store]: treesize reduction 303, result has 14.6 percent of original size [2021-12-18 19:51:18,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 1151 treesize of output 563 [2021-12-18 19:51:18,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 889 treesize of output 873 [2021-12-18 19:51:18,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 795 treesize of output 683 [2021-12-18 19:51:18,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 1099 treesize of output 1043 [2021-12-18 19:51:18,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 883 treesize of output 855 [2021-12-18 19:51:18,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:18,639 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:51:18,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 718 treesize of output 636 [2021-12-18 19:51:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 8 not checked. [2021-12-18 19:51:20,821 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:51:20,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508132640] [2021-12-18 19:51:20,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508132640] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:51:20,821 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:51:20,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2021-12-18 19:51:20,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376243604] [2021-12-18 19:51:20,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:51:20,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-18 19:51:20,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:51:20,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-18 19:51:20,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=146, Unknown=7, NotChecked=210, Total=420 [2021-12-18 19:51:20,822 INFO L87 Difference]: Start difference. First operand 988 states and 1217 transitions. Second operand has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 21 states have internal predecessors, (89), 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) [2021-12-18 19:51:21,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:51:21,637 INFO L93 Difference]: Finished difference Result 1189 states and 1464 transitions. [2021-12-18 19:51:21,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 19:51:21,638 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 21 states have internal predecessors, (89), 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 55 [2021-12-18 19:51:21,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:51:21,640 INFO L225 Difference]: With dead ends: 1189 [2021-12-18 19:51:21,640 INFO L226 Difference]: Without dead ends: 1189 [2021-12-18 19:51:21,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 84 SyntacticMatches, 11 SemanticMatches, 24 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=260, Unknown=7, NotChecked=280, Total=650 [2021-12-18 19:51:21,644 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 94 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 384 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 19:51:21,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 228 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 192 Invalid, 0 Unknown, 384 Unchecked, 0.5s Time] [2021-12-18 19:51:21,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2021-12-18 19:51:21,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 972. [2021-12-18 19:51:21,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 964 states have (on average 1.237551867219917) internal successors, (1193), 971 states have internal predecessors, (1193), 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) [2021-12-18 19:51:21,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1193 transitions. [2021-12-18 19:51:21,654 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1193 transitions. Word has length 55 [2021-12-18 19:51:21,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:51:21,654 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1193 transitions. [2021-12-18 19:51:21,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 21 states have internal predecessors, (89), 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) [2021-12-18 19:51:21,654 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1193 transitions. [2021-12-18 19:51:21,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-18 19:51:21,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:51:21,655 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:51:21,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2021-12-18 19:51:21,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:51:21,859 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:51:21,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:51:21,860 INFO L85 PathProgramCache]: Analyzing trace with hash -581803496, now seen corresponding path program 1 times [2021-12-18 19:51:21,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:51:21,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235188955] [2021-12-18 19:51:21,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:51:21,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:51:21,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:51:21,861 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:51:21,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-12-18 19:51:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:51:22,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-18 19:51:22,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:51:22,071 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-12-18 19:51:22,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2021-12-18 19:51:23,494 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-18 19:51:23,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:51:24,613 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-18 19:51:24,613 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 19:51:24,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235188955] [2021-12-18 19:51:24,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235188955] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:51:24,613 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 19:51:24,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-12-18 19:51:24,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725674685] [2021-12-18 19:51:24,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 19:51:24,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-18 19:51:24,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 19:51:24,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-18 19:51:24,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-12-18 19:51:24,614 INFO L87 Difference]: Start difference. First operand 972 states and 1193 transitions. Second operand has 17 states, 16 states have (on average 5.875) internal successors, (94), 17 states have internal predecessors, (94), 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) [2021-12-18 19:51:25,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:51:25,509 INFO L93 Difference]: Finished difference Result 1290 states and 1587 transitions. [2021-12-18 19:51:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 19:51:25,509 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.875) internal successors, (94), 17 states have internal predecessors, (94), 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 56 [2021-12-18 19:51:25,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:51:25,512 INFO L225 Difference]: With dead ends: 1290 [2021-12-18 19:51:25,512 INFO L226 Difference]: Without dead ends: 1290 [2021-12-18 19:51:25,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-12-18 19:51:25,513 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 74 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 19:51:25,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 250 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 44 Unchecked, 0.6s Time] [2021-12-18 19:51:25,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2021-12-18 19:51:25,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1198. [2021-12-18 19:51:25,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 1190 states have (on average 1.2445378151260504) internal successors, (1481), 1197 states have internal predecessors, (1481), 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) [2021-12-18 19:51:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1481 transitions. [2021-12-18 19:51:25,521 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1481 transitions. Word has length 56 [2021-12-18 19:51:25,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:51:25,522 INFO L470 AbstractCegarLoop]: Abstraction has 1198 states and 1481 transitions. [2021-12-18 19:51:25,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.875) internal successors, (94), 17 states have internal predecessors, (94), 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) [2021-12-18 19:51:25,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1481 transitions. [2021-12-18 19:51:25,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-18 19:51:25,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:51:25,523 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:51:25,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-12-18 19:51:25,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 19:51:25,726 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 21 more)] === [2021-12-18 19:51:25,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:51:25,726 INFO L85 PathProgramCache]: Analyzing trace with hash -259775269, now seen corresponding path program 1 times [2021-12-18 19:51:25,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 19:51:25,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239587644] [2021-12-18 19:51:25,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:51:25,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 19:51:25,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 19:51:25,727 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 19:51:25,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-12-18 19:51:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:51:25,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-18 19:51:25,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:51:26,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-12-18 19:51:26,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:26,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:26,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 52 [2021-12-18 19:51:26,094 INFO L388 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 58 treesize of output 54 [2021-12-18 19:51:26,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 87 [2021-12-18 19:51:26,221 INFO L388 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 45 treesize of output 41 [2021-12-18 19:51:26,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:26,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 123 [2021-12-18 19:51:26,630 INFO L388 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 153 treesize of output 133 [2021-12-18 19:51:27,187 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:51:27,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 175 treesize of output 95 [2021-12-18 19:51:27,216 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 19:51:27,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:51:27,622 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1784 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1784) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32))))))) is different from false [2021-12-18 19:51:27,645 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1784 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse1 (bvmul |c_ULTIMATE.start_lis_~i~0#1| (_ bv4 32))) (.cse2 (bvadd |c_ULTIMATE.start_lis_#t~mem12#1| (_ bv1 32)))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset|) ((_ extract 7 0) .cse2)) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)) ((_ extract 15 8) .cse2)) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)) ((_ extract 23 16) .cse2)) (bvadd .cse1 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32)) ((_ extract 31 24) .cse2)))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1784) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32))))))) is different from false [2021-12-18 19:51:27,701 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1784 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|))) (let ((.cse2 (bvmul |c_ULTIMATE.start_lis_~i~0#1| (_ bv4 32))) (.cse3 (bvadd (let ((.cse4 (bvmul |c_ULTIMATE.start_lis_~j~0#1| (_ bv4 32)))) (concat (concat (concat (select .cse1 (bvadd .cse4 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse1 (bvadd .cse4 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse1 (bvadd .cse4 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse1 (bvadd .cse4 |c_ULTIMATE.start_lis_~best~0#1.offset|)))) (_ bv1 32)))) (store (store (store (store .cse1 (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset|) ((_ extract 7 0) .cse3)) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)) ((_ extract 15 8) .cse3)) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)) ((_ extract 23 16) .cse3)) (bvadd .cse2 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32)) ((_ extract 31 24) .cse3))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1784) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32))))))) is different from false [2021-12-18 19:51:27,845 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1784 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse1 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (.cse2 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32))) (.cse3 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|))) (let ((.cse5 (bvmul |c_ULTIMATE.start_lis_~i~0#1| (_ bv4 32))) (.cse6 (bvadd (concat (concat (concat (select .cse4 .cse1) (select .cse4 .cse2)) (select .cse4 .cse3)) (select .cse4 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (_ bv1 32)))) (store (store (store (store .cse4 (bvadd .cse5 |c_ULTIMATE.start_lis_~best~0#1.offset|) ((_ extract 7 0) .cse6)) (bvadd .cse5 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)) ((_ extract 15 8) .cse6)) (bvadd .cse5 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)) ((_ extract 23 16) .cse6)) (bvadd .cse5 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32)) ((_ extract 31 24) .cse6))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1784) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)))))))) is different from false [2021-12-18 19:51:27,861 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1784 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse7 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32))) (.cse6 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32))) (.cse5 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32))) (.cse4 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (.cse1 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (.cse2 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32))) (.cse3 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse8 (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|))) (let ((.cse9 (bvadd (concat (concat (concat (select .cse8 .cse1) (select .cse8 .cse2)) (select .cse8 .cse3)) (select .cse8 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (_ bv1 32)))) (store (store (store (store .cse8 .cse7 ((_ extract 7 0) .cse9)) .cse6 ((_ extract 15 8) .cse9)) .cse5 ((_ extract 23 16) .cse9)) .cse4 ((_ extract 31 24) .cse9))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1784) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (concat (concat (concat (select .cse0 .cse4) (select .cse0 .cse5)) (select .cse0 .cse6)) (select .cse0 .cse7)))))) is different from false [2021-12-18 19:51:27,889 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1784 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1778 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse7 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32))) (.cse6 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32))) (.cse5 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32))) (.cse4 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (.cse1 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (.cse2 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32))) (.cse3 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (let ((.cse0 (select (store (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1778))) (store .cse8 |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse9 (select .cse8 |c_ULTIMATE.start_lis_~best~0#1.base|))) (let ((.cse10 (bvadd (concat (concat (concat (select .cse9 .cse1) (select .cse9 .cse2)) (select .cse9 .cse3)) (select .cse9 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (_ bv1 32)))) (store (store (store (store .cse9 .cse7 ((_ extract 7 0) .cse10)) .cse6 ((_ extract 15 8) .cse10)) .cse5 ((_ extract 23 16) .cse10)) .cse4 ((_ extract 31 24) .cse10)))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1784) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (concat (concat (concat (select .cse0 .cse4) (select .cse0 .cse5)) (select .cse0 .cse6)) (select .cse0 .cse7)))))) is different from false [2021-12-18 19:51:27,975 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1774 (_ BitVec 8)) (v_ArrVal_1773 (_ BitVec 8)) (v_ArrVal_1776 (_ BitVec 8)) (v_ArrVal_1775 (_ BitVec 8)) (v_ArrVal_1784 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1778 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse7 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32))) (.cse6 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32))) (.cse5 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32))) (.cse4 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (.cse1 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (.cse2 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32))) (.cse3 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (let ((.cse0 (select (store (let ((.cse8 (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse11 (bvmul |c_ULTIMATE.start_lis_~i~0#1| (_ bv4 32)))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd .cse11 |c_ULTIMATE.start_lis_~best~0#1.offset|) v_ArrVal_1776) (bvadd .cse11 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)) v_ArrVal_1775) (bvadd .cse11 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32)) v_ArrVal_1774) (bvadd .cse11 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32)) v_ArrVal_1773))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1778))) (store .cse8 |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse9 (select .cse8 |c_ULTIMATE.start_lis_~best~0#1.base|))) (let ((.cse10 (bvadd (concat (concat (concat (select .cse9 .cse1) (select .cse9 .cse2)) (select .cse9 .cse3)) (select .cse9 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (_ bv1 32)))) (store (store (store (store .cse9 .cse7 ((_ extract 7 0) .cse10)) .cse6 ((_ extract 15 8) .cse10)) .cse5 ((_ extract 23 16) .cse10)) .cse4 ((_ extract 31 24) .cse10)))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1784) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (concat (concat (concat (select .cse0 .cse4) (select .cse0 .cse5)) (select .cse0 .cse6)) (select .cse0 .cse7)))))) is different from false [2021-12-18 19:51:28,020 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1774 (_ BitVec 8)) (v_ArrVal_1773 (_ BitVec 8)) (v_ArrVal_1776 (_ BitVec 8)) (v_ArrVal_1775 (_ BitVec 8)) (v_ArrVal_1784 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1778 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse7 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32))) (.cse6 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32))) (.cse5 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32))) (.cse4 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (.cse1 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (.cse2 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32))) (.cse3 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (let ((.cse0 (select (store (let ((.cse8 (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse11 (bvmul |c_ULTIMATE.start_lis_~i~0#1| (_ bv4 32)))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd .cse11 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)) v_ArrVal_1776) (bvadd .cse11 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) v_ArrVal_1775) (bvadd .cse11 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)) v_ArrVal_1774) (bvadd .cse11 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) v_ArrVal_1773))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1778))) (store .cse8 |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse9 (select .cse8 |c_ULTIMATE.start_lis_~best~0#1.base|))) (let ((.cse10 (bvadd (concat (concat (concat (select .cse9 .cse1) (select .cse9 .cse2)) (select .cse9 .cse3)) (select .cse9 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (_ bv1 32)))) (store (store (store (store .cse9 .cse7 ((_ extract 7 0) .cse10)) .cse6 ((_ extract 15 8) .cse10)) .cse5 ((_ extract 23 16) .cse10)) .cse4 ((_ extract 31 24) .cse10)))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1784) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (concat (concat (concat (select .cse0 .cse4) (select .cse0 .cse5)) (select .cse0 .cse6)) (select .cse0 .cse7)))))) is different from false [2021-12-18 19:51:28,087 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1774 (_ BitVec 8)) (v_ArrVal_1773 (_ BitVec 8)) (v_ArrVal_1772 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1776 (_ BitVec 8)) (v_ArrVal_1775 (_ BitVec 8)) (v_ArrVal_1784 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1778 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse7 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32))) (.cse6 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32))) (.cse5 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32))) (.cse4 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (.cse1 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv3 32))) (.cse2 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv2 32))) (.cse3 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (let ((.cse0 (select (store (let ((.cse8 (store (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1772))) (store .cse11 |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse12 (bvmul |c_ULTIMATE.start_lis_~i~0#1| (_ bv4 32)))) (store (store (store (store (select .cse11 |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd .cse12 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv4 32)) v_ArrVal_1776) (bvadd .cse12 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) v_ArrVal_1775) (bvadd .cse12 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv6 32)) v_ArrVal_1774) (bvadd .cse12 |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) v_ArrVal_1773)))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1778))) (store .cse8 |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse9 (select .cse8 |c_ULTIMATE.start_lis_~best~0#1.base|))) (let ((.cse10 (bvadd (concat (concat (concat (select .cse9 .cse1) (select .cse9 .cse2)) (select .cse9 .cse3)) (select .cse9 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (_ bv1 32)))) (store (store (store (store .cse9 .cse7 ((_ extract 7 0) .cse10)) .cse6 ((_ extract 15 8) .cse10)) .cse5 ((_ extract 23 16) .cse10)) .cse4 ((_ extract 31 24) .cse10)))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1784) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (concat (concat (concat (select .cse0 .cse4) (select .cse0 .cse5)) (select .cse0 .cse6)) (select .cse0 .cse7)))))) is different from false [2021-12-18 19:51:28,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:28,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 19:51:28,191 INFO L354 Elim1Store]: treesize reduction 303, result has 14.6 percent of original size [2021-12-18 19:51:28,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 19421 treesize of output 7953 [2021-12-18 19:51:28,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11811 treesize of output 11557 [2021-12-18 19:51:28,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29040 treesize of output 20080 [2021-12-18 19:51:28,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 25838 treesize of output 25718 [2021-12-18 19:51:28,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 24264 treesize of output 24124 [2021-12-18 19:51:28,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:28,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 19:51:29,206 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 19:51:29,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 28228 treesize of output 19298 Killed by 15