./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 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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-?-791161d [2022-07-23 05:38:57,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 05:38:57,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 05:38:57,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 05:38:57,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 05:38:57,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 05:38:57,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 05:38:57,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 05:38:57,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 05:38:57,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 05:38:57,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 05:38:57,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 05:38:57,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 05:38:57,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 05:38:57,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 05:38:57,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 05:38:57,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 05:38:57,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 05:38:57,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 05:38:57,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 05:38:57,361 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 05:38:57,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 05:38:57,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 05:38:57,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 05:38:57,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 05:38:57,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 05:38:57,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 05:38:57,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 05:38:57,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 05:38:57,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 05:38:57,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 05:38:57,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 05:38:57,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 05:38:57,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 05:38:57,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 05:38:57,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 05:38:57,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 05:38:57,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 05:38:57,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 05:38:57,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 05:38:57,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 05:38:57,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 05:38:57,375 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-23 05:38:57,389 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 05:38:57,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 05:38:57,391 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 05:38:57,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 05:38:57,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 05:38:57,392 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 05:38:57,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 05:38:57,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 05:38:57,393 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 05:38:57,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 05:38:57,394 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 05:38:57,395 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 05:38:57,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 05:38:57,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 05:38:57,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 05:38:57,395 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 05:38:57,395 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 05:38:57,396 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-23 05:38:57,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 05:38:57,397 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 05:38:57,397 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 05:38:57,397 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 05:38:57,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 05:38:57,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 05:38:57,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 05:38:57,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:38:57,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 05:38:57,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 05:38:57,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 05:38:57,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 05:38:57,398 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf [2022-07-23 05:38:57,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 05:38:57,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 05:38:57,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 05:38:57,589 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 05:38:57,591 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 05:38:57,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2022-07-23 05:38:57,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81d737831/d52b2b72e8fc4827a1b3e7d410d63355/FLAG080d2cfd4 [2022-07-23 05:38:58,023 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 05:38:58,023 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2022-07-23 05:38:58,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81d737831/d52b2b72e8fc4827a1b3e7d410d63355/FLAG080d2cfd4 [2022-07-23 05:38:58,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81d737831/d52b2b72e8fc4827a1b3e7d410d63355 [2022-07-23 05:38:58,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 05:38:58,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 05:38:58,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 05:38:58,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 05:38:58,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 05:38:58,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:38:58" (1/1) ... [2022-07-23 05:38:58,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fe48154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:38:58, skipping insertion in model container [2022-07-23 05:38:58,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:38:58" (1/1) ... [2022-07-23 05:38:58,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 05:38:58,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 05:38:58,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:38:58,321 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-23 05:38:58,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@76eee61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:38:58, skipping insertion in model container [2022-07-23 05:38:58,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 05:38:58,323 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-23 05:38:58,324 INFO L158 Benchmark]: Toolchain (without parser) took 277.13ms. Allocated memory is still 109.1MB. Free memory was 78.4MB in the beginning and 81.6MB in the end (delta: -3.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-23 05:38:58,325 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory was 65.4MB in the beginning and 65.3MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 05:38:58,326 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.46ms. Allocated memory is still 109.1MB. Free memory was 78.1MB in the beginning and 81.6MB in the end (delta: -3.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-23 05:38:58,328 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory was 65.4MB in the beginning and 65.3MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.46ms. Allocated memory is still 109.1MB. Free memory was 78.1MB in the beginning and 81.6MB in the end (delta: -3.4MB). 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 of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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-?-791161d [2022-07-23 05:38:59,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 05:38:59,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 05:38:59,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 05:38:59,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 05:38:59,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 05:38:59,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 05:38:59,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 05:38:59,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 05:38:59,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 05:38:59,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 05:38:59,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 05:38:59,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 05:38:59,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 05:38:59,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 05:38:59,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 05:38:59,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 05:38:59,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 05:38:59,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 05:38:59,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 05:38:59,860 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 05:38:59,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 05:38:59,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 05:38:59,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 05:38:59,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 05:38:59,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 05:38:59,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 05:38:59,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 05:38:59,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 05:38:59,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 05:38:59,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 05:38:59,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 05:38:59,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 05:38:59,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 05:38:59,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 05:38:59,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 05:38:59,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 05:38:59,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 05:38:59,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 05:38:59,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 05:38:59,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 05:38:59,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 05:38:59,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-23 05:38:59,902 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 05:38:59,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 05:38:59,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 05:38:59,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 05:38:59,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 05:38:59,905 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 05:38:59,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 05:38:59,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 05:38:59,905 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 05:38:59,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 05:38:59,906 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 05:38:59,907 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 05:38:59,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 05:38:59,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 05:38:59,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 05:38:59,907 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 05:38:59,907 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 05:38:59,908 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-23 05:38:59,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 05:38:59,908 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 05:38:59,908 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-23 05:38:59,908 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-23 05:38:59,908 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 05:38:59,908 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 05:38:59,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 05:38:59,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 05:38:59,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 05:38:59,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:38:59,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 05:38:59,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 05:38:59,910 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-23 05:38:59,910 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-23 05:38:59,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-23 05:38:59,910 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf [2022-07-23 05:39:00,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 05:39:00,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 05:39:00,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 05:39:00,229 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 05:39:00,231 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 05:39:00,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2022-07-23 05:39:00,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46b022c9b/f5cb85b097ab44769e304527c64deb16/FLAG7aba46459 [2022-07-23 05:39:00,702 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 05:39:00,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2022-07-23 05:39:00,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46b022c9b/f5cb85b097ab44769e304527c64deb16/FLAG7aba46459 [2022-07-23 05:39:00,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46b022c9b/f5cb85b097ab44769e304527c64deb16 [2022-07-23 05:39:00,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 05:39:00,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 05:39:00,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 05:39:00,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 05:39:00,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 05:39:00,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:39:00" (1/1) ... [2022-07-23 05:39:00,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f29812e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:39:00, skipping insertion in model container [2022-07-23 05:39:00,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:39:00" (1/1) ... [2022-07-23 05:39:00,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 05:39:00,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 05:39:01,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:39:01,073 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-23 05:39:01,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 05:39:01,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:39:01,117 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 05:39:01,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:39:01,174 INFO L208 MainTranslator]: Completed translation [2022-07-23 05:39:01,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:39:01 WrapperNode [2022-07-23 05:39:01,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 05:39:01,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 05:39:01,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 05:39:01,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 05:39:01,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:39:01" (1/1) ... [2022-07-23 05:39:01,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:39:01" (1/1) ... [2022-07-23 05:39:01,229 INFO L137 Inliner]: procedures = 117, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 114 [2022-07-23 05:39:01,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 05:39:01,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 05:39:01,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 05:39:01,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 05:39:01,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:39:01" (1/1) ... [2022-07-23 05:39:01,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:39:01" (1/1) ... [2022-07-23 05:39:01,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:39:01" (1/1) ... [2022-07-23 05:39:01,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:39:01" (1/1) ... [2022-07-23 05:39:01,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:39:01" (1/1) ... [2022-07-23 05:39:01,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:39:01" (1/1) ... [2022-07-23 05:39:01,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:39:01" (1/1) ... [2022-07-23 05:39:01,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 05:39:01,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 05:39:01,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 05:39:01,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 05:39:01,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:39:01" (1/1) ... [2022-07-23 05:39:01,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:39:01,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:39:01,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-23 05:39:01,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-23 05:39:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-23 05:39:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 05:39:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 05:39:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-23 05:39:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 05:39:01,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 05:39:01,443 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 05:39:01,452 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 05:39:01,812 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 05:39:01,816 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 05:39:01,816 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-23 05:39:01,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:39:01 BoogieIcfgContainer [2022-07-23 05:39:01,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 05:39:01,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 05:39:01,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 05:39:01,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 05:39:01,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 05:39:00" (1/3) ... [2022-07-23 05:39:01,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c00ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 05:39:01, skipping insertion in model container [2022-07-23 05:39:01,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:39:01" (2/3) ... [2022-07-23 05:39:01,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c00ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 05:39:01, skipping insertion in model container [2022-07-23 05:39:01,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:39:01" (3/3) ... [2022-07-23 05:39:01,824 INFO L111 eAbstractionObserver]: Analyzing ICFG lis-alloca-1.i [2022-07-23 05:39:01,843 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 05:39:01,843 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2022-07-23 05:39:01,871 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 05:39:01,882 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@322705e5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71f99208 [2022-07-23 05:39:01,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-07-23 05:39:01,888 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) [2022-07-23 05:39:01,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-23 05:39:01,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:01,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-23 05:39:01,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:01,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:01,900 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2022-07-23 05:39:01,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:01,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942949784] [2022-07-23 05:39:01,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:01,910 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:01,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:01,912 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:01,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-23 05:39:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:01,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 05:39:01,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:02,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 05:39:02,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:02,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:39:02,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:02,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942949784] [2022-07-23 05:39:02,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942949784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:39:02,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:39:02,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 05:39:02,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598333365] [2022-07-23 05:39:02,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:39:02,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:39:02,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:02,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:39:02,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:39:02,087 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) [2022-07-23 05:39:02,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:02,207 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2022-07-23 05:39:02,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:39:02,209 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 [2022-07-23 05:39:02,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:02,215 INFO L225 Difference]: With dead ends: 66 [2022-07-23 05:39:02,215 INFO L226 Difference]: Without dead ends: 64 [2022-07-23 05:39:02,216 INFO L412 NwaCegarLoop]: 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 [2022-07-23 05:39:02,218 INFO L413 NwaCegarLoop]: 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 [2022-07-23 05:39:02,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 51 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:39:02,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-23 05:39:02,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-07-23 05:39:02,243 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) [2022-07-23 05:39:02,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2022-07-23 05:39:02,245 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 6 [2022-07-23 05:39:02,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:02,246 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2022-07-23 05:39:02,246 INFO L496 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) [2022-07-23 05:39:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2022-07-23 05:39:02,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-23 05:39:02,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:02,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-23 05:39:02,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:02,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:02,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:02,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:02,460 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2022-07-23 05:39:02,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:02,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508340177] [2022-07-23 05:39:02,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:02,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:02,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:02,462 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:02,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-23 05:39:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:02,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 05:39:02,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:02,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 05:39:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:02,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:39:02,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:02,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508340177] [2022-07-23 05:39:02,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508340177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:39:02,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:39:02,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:39:02,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653664307] [2022-07-23 05:39:02,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:39:02,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:39:02,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:02,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:39:02,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:39:02,586 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) [2022-07-23 05:39:02,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:02,876 INFO L93 Difference]: Finished difference Result 129 states and 144 transitions. [2022-07-23 05:39:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 05:39:02,877 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 [2022-07-23 05:39:02,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:02,878 INFO L225 Difference]: With dead ends: 129 [2022-07-23 05:39:02,878 INFO L226 Difference]: Without dead ends: 129 [2022-07-23 05:39:02,878 INFO L412 NwaCegarLoop]: 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 [2022-07-23 05:39:02,879 INFO L413 NwaCegarLoop]: 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 [2022-07-23 05:39:02,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 275 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 05:39:02,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-23 05:39:02,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 67. [2022-07-23 05:39:02,884 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) [2022-07-23 05:39:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2022-07-23 05:39:02,884 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 6 [2022-07-23 05:39:02,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:02,885 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2022-07-23 05:39:02,885 INFO L496 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) [2022-07-23 05:39:02,885 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2022-07-23 05:39:02,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-23 05:39:02,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:02,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-23 05:39:02,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:03,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:03,095 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:03,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:03,095 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2022-07-23 05:39:03,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:03,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274228296] [2022-07-23 05:39:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:03,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:03,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:03,097 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:03,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-23 05:39:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:03,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 05:39:03,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:03,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-23 05:39:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:03,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:39:03,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:03,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274228296] [2022-07-23 05:39:03,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274228296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:39:03,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:39:03,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:39:03,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694169931] [2022-07-23 05:39:03,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:39:03,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:39:03,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:03,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:39:03,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:39:03,221 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) [2022-07-23 05:39:03,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:03,243 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2022-07-23 05:39:03,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 05:39:03,244 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 [2022-07-23 05:39:03,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:03,245 INFO L225 Difference]: With dead ends: 69 [2022-07-23 05:39:03,245 INFO L226 Difference]: Without dead ends: 69 [2022-07-23 05:39:03,245 INFO L412 NwaCegarLoop]: 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 [2022-07-23 05:39:03,246 INFO L413 NwaCegarLoop]: 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 [2022-07-23 05:39:03,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 174 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 29 Unchecked, 0.0s Time] [2022-07-23 05:39:03,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-07-23 05:39:03,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2022-07-23 05:39:03,267 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) [2022-07-23 05:39:03,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2022-07-23 05:39:03,269 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 6 [2022-07-23 05:39:03,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:03,269 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2022-07-23 05:39:03,270 INFO L496 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) [2022-07-23 05:39:03,270 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2022-07-23 05:39:03,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 05:39:03,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:03,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:03,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:03,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:03,479 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:03,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:03,479 INFO L85 PathProgramCache]: Analyzing trace with hash 176742579, now seen corresponding path program 1 times [2022-07-23 05:39:03,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:03,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23434409] [2022-07-23 05:39:03,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:03,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:03,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:03,481 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:03,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-23 05:39:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:03,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 05:39:03,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:03,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:03,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:39:03,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:03,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23434409] [2022-07-23 05:39:03,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23434409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:39:03,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:39:03,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:39:03,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792907418] [2022-07-23 05:39:03,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:39:03,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:39:03,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:03,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:39:03,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:39:03,544 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) [2022-07-23 05:39:03,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:03,573 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2022-07-23 05:39:03,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 05:39:03,576 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 [2022-07-23 05:39:03,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:03,577 INFO L225 Difference]: With dead ends: 70 [2022-07-23 05:39:03,577 INFO L226 Difference]: Without dead ends: 70 [2022-07-23 05:39:03,577 INFO L412 NwaCegarLoop]: 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 [2022-07-23 05:39:03,578 INFO L413 NwaCegarLoop]: 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 [2022-07-23 05:39:03,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 129 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:39:03,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-23 05:39:03,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2022-07-23 05:39:03,580 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) [2022-07-23 05:39:03,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2022-07-23 05:39:03,581 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 8 [2022-07-23 05:39:03,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:03,581 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2022-07-23 05:39:03,582 INFO L496 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) [2022-07-23 05:39:03,582 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2022-07-23 05:39:03,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-23 05:39:03,582 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:03,582 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:03,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:03,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:03,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:03,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:03,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2022-07-23 05:39:03,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:03,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048494387] [2022-07-23 05:39:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:03,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:03,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:03,794 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:03,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-23 05:39:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:03,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 05:39:03,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:03,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:39:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:03,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:03,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048494387] [2022-07-23 05:39:03,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048494387] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:39:03,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:39:03,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-23 05:39:03,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773881749] [2022-07-23 05:39:03,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:39:03,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 05:39:03,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:03,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 05:39:03,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:39:03,921 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) [2022-07-23 05:39:03,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:03,970 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2022-07-23 05:39:03,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 05:39:03,972 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 [2022-07-23 05:39:03,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:03,973 INFO L225 Difference]: With dead ends: 127 [2022-07-23 05:39:03,973 INFO L226 Difference]: Without dead ends: 127 [2022-07-23 05:39:03,973 INFO L412 NwaCegarLoop]: 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 [2022-07-23 05:39:03,974 INFO L413 NwaCegarLoop]: 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, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:03,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 255 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:39:03,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-07-23 05:39:03,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 72. [2022-07-23 05:39:03,976 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) [2022-07-23 05:39:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2022-07-23 05:39:03,977 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 10 [2022-07-23 05:39:03,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:03,977 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2022-07-23 05:39:03,977 INFO L496 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) [2022-07-23 05:39:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2022-07-23 05:39:03,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-23 05:39:03,978 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:03,978 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:03,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-07-23 05:39:04,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:04,184 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:04,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:04,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2022-07-23 05:39:04,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:04,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436432021] [2022-07-23 05:39:04,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:04,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:04,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:04,186 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:04,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-23 05:39:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:04,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 05:39:04,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:04,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-23 05:39:04,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:04,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:39:04,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:04,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:04,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436432021] [2022-07-23 05:39:04,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436432021] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:39:04,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:39:04,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-07-23 05:39:04,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654064331] [2022-07-23 05:39:04,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:39:04,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-23 05:39:04,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:04,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-23 05:39:04,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-23 05:39:04,756 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) [2022-07-23 05:39:05,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:05,463 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2022-07-23 05:39:05,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 05:39:05,465 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 [2022-07-23 05:39:05,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:05,465 INFO L225 Difference]: With dead ends: 135 [2022-07-23 05:39:05,465 INFO L226 Difference]: Without dead ends: 135 [2022-07-23 05:39:05,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-23 05:39:05,467 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 324 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:05,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 267 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 152 Invalid, 0 Unknown, 5 Unchecked, 0.7s Time] [2022-07-23 05:39:05,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-07-23 05:39:05,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 80. [2022-07-23 05:39:05,470 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) [2022-07-23 05:39:05,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2022-07-23 05:39:05,471 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 10 [2022-07-23 05:39:05,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:05,471 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2022-07-23 05:39:05,471 INFO L496 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) [2022-07-23 05:39:05,471 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2022-07-23 05:39:05,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-23 05:39:05,471 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:05,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:05,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-23 05:39:05,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:05,682 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:05,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:05,682 INFO L85 PathProgramCache]: Analyzing trace with hash -680998152, now seen corresponding path program 1 times [2022-07-23 05:39:05,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:05,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353108510] [2022-07-23 05:39:05,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:05,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:05,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:05,684 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:05,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-23 05:39:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:05,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 05:39:05,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:05,765 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-23 05:39:05,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-07-23 05:39:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 05:39:05,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:39:05,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:05,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353108510] [2022-07-23 05:39:05,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353108510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:39:05,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:39:05,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 05:39:05,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938733258] [2022-07-23 05:39:05,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:39:05,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:39:05,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:05,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:39:05,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:39:05,778 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) [2022-07-23 05:39:05,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:05,883 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2022-07-23 05:39:05,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:39:05,883 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 [2022-07-23 05:39:05,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:05,885 INFO L225 Difference]: With dead ends: 73 [2022-07-23 05:39:05,885 INFO L226 Difference]: Without dead ends: 73 [2022-07-23 05:39:05,885 INFO L412 NwaCegarLoop]: 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 [2022-07-23 05:39:05,886 INFO L413 NwaCegarLoop]: 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 [2022-07-23 05:39:05,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 49 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:39:05,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-23 05:39:05,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-07-23 05:39:05,889 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) [2022-07-23 05:39:05,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2022-07-23 05:39:05,890 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 12 [2022-07-23 05:39:05,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:05,890 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2022-07-23 05:39:05,890 INFO L496 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) [2022-07-23 05:39:05,890 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2022-07-23 05:39:05,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-23 05:39:05,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:05,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:05,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:06,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:06,100 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:06,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:06,100 INFO L85 PathProgramCache]: Analyzing trace with hash -680998151, now seen corresponding path program 1 times [2022-07-23 05:39:06,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:06,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117622726] [2022-07-23 05:39:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:06,100 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:06,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:06,101 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:06,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-23 05:39:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:06,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-23 05:39:06,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:06,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:39:06,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-07-23 05:39:06,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 05:39:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 05:39:06,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:39:06,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:06,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117622726] [2022-07-23 05:39:06,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117622726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:39:06,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:39:06,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:39:06,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243631513] [2022-07-23 05:39:06,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:39:06,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:39:06,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:06,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:39:06,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:39:06,196 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) [2022-07-23 05:39:06,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:06,370 INFO L93 Difference]: Finished difference Result 128 states and 145 transitions. [2022-07-23 05:39:06,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 05:39:06,378 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 [2022-07-23 05:39:06,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:06,379 INFO L225 Difference]: With dead ends: 128 [2022-07-23 05:39:06,379 INFO L226 Difference]: Without dead ends: 128 [2022-07-23 05:39:06,379 INFO L412 NwaCegarLoop]: 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 [2022-07-23 05:39:06,380 INFO L413 NwaCegarLoop]: 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 [2022-07-23 05:39:06,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 139 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:39:06,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-07-23 05:39:06,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 76. [2022-07-23 05:39:06,382 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) [2022-07-23 05:39:06,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2022-07-23 05:39:06,383 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 12 [2022-07-23 05:39:06,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:06,383 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2022-07-23 05:39:06,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:39:06,383 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2022-07-23 05:39:06,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-23 05:39:06,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:06,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:06,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:06,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:06,590 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:06,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:06,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1074025161, now seen corresponding path program 1 times [2022-07-23 05:39:06,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:06,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925427733] [2022-07-23 05:39:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:06,591 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:06,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:06,592 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:06,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-23 05:39:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:06,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-23 05:39:06,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:06,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:39:06,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2022-07-23 05:39:06,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 05:39:06,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 05:39:06,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:39:06,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:06,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925427733] [2022-07-23 05:39:06,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925427733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:39:06,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:39:06,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:39:06,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913438537] [2022-07-23 05:39:06,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:39:06,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 05:39:06,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:06,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 05:39:06,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:39:06,706 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) [2022-07-23 05:39:06,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:06,884 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2022-07-23 05:39:06,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 05:39:06,885 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 [2022-07-23 05:39:06,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:06,885 INFO L225 Difference]: With dead ends: 118 [2022-07-23 05:39:06,885 INFO L226 Difference]: Without dead ends: 118 [2022-07-23 05:39:06,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:39:06,886 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 51 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:06,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 159 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 41 Unchecked, 0.1s Time] [2022-07-23 05:39:06,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-07-23 05:39:06,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 75. [2022-07-23 05:39:06,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 58 states have (on average 1.4827586206896552) internal successors, (86), 74 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:39:06,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2022-07-23 05:39:06,888 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 12 [2022-07-23 05:39:06,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:06,888 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2022-07-23 05:39:06,889 INFO L496 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) [2022-07-23 05:39:06,889 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2022-07-23 05:39:06,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-23 05:39:06,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:06,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:06,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:07,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:07,096 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:07,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:07,096 INFO L85 PathProgramCache]: Analyzing trace with hash 363893777, now seen corresponding path program 1 times [2022-07-23 05:39:07,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:07,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237767925] [2022-07-23 05:39:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:07,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:07,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:07,098 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:07,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-23 05:39:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:07,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 05:39:07,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:07,163 INFO L356 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-07-23 05:39:07,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 18 [2022-07-23 05:39:07,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 05:39:07,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:39:07,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:07,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237767925] [2022-07-23 05:39:07,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237767925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:39:07,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:39:07,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 05:39:07,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454674971] [2022-07-23 05:39:07,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:39:07,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:39:07,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:07,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:39:07,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:39:07,174 INFO L87 Difference]: Start difference. First operand 75 states and 86 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) [2022-07-23 05:39:07,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:07,262 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2022-07-23 05:39:07,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:39:07,262 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 [2022-07-23 05:39:07,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:07,263 INFO L225 Difference]: With dead ends: 73 [2022-07-23 05:39:07,263 INFO L226 Difference]: Without dead ends: 73 [2022-07-23 05:39:07,263 INFO L412 NwaCegarLoop]: 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 [2022-07-23 05:39:07,263 INFO L413 NwaCegarLoop]: 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 [2022-07-23 05:39:07,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 54 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:39:07,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-23 05:39:07,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-07-23 05:39:07,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 72 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) [2022-07-23 05:39:07,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2022-07-23 05:39:07,265 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 13 [2022-07-23 05:39:07,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:07,265 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2022-07-23 05:39:07,265 INFO L496 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) [2022-07-23 05:39:07,265 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2022-07-23 05:39:07,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-23 05:39:07,266 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:07,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:07,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:07,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:07,472 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:07,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:07,472 INFO L85 PathProgramCache]: Analyzing trace with hash 363893778, now seen corresponding path program 1 times [2022-07-23 05:39:07,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:07,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636418027] [2022-07-23 05:39:07,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:07,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:07,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:07,474 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:07,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-23 05:39:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:07,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-23 05:39:07,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:07,558 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-23 05:39:07,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-23 05:39:07,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 05:39:07,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:39:07,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:07,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636418027] [2022-07-23 05:39:07,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636418027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:39:07,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:39:07,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:39:07,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303598512] [2022-07-23 05:39:07,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:39:07,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:39:07,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:07,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:39:07,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:39:07,580 INFO L87 Difference]: Start difference. First operand 73 states and 84 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) [2022-07-23 05:39:07,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:07,748 INFO L93 Difference]: Finished difference Result 124 states and 142 transitions. [2022-07-23 05:39:07,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 05:39:07,749 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 [2022-07-23 05:39:07,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:07,749 INFO L225 Difference]: With dead ends: 124 [2022-07-23 05:39:07,749 INFO L226 Difference]: Without dead ends: 124 [2022-07-23 05:39:07,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:39:07,750 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 59 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:07,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 133 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:39:07,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-07-23 05:39:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 77. [2022-07-23 05:39:07,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.435483870967742) internal successors, (89), 76 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) [2022-07-23 05:39:07,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2022-07-23 05:39:07,752 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 13 [2022-07-23 05:39:07,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:07,752 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2022-07-23 05:39:07,752 INFO L496 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) [2022-07-23 05:39:07,752 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2022-07-23 05:39:07,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-23 05:39:07,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:07,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:07,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:07,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:07,953 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:07,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:07,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958356, now seen corresponding path program 1 times [2022-07-23 05:39:07,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:07,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78067702] [2022-07-23 05:39:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:07,953 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:07,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:07,954 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:07,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-23 05:39:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:08,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 05:39:08,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:08,031 INFO L356 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-07-23 05:39:08,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2022-07-23 05:39:08,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 05:39:08,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:39:08,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:08,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78067702] [2022-07-23 05:39:08,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78067702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:39:08,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:39:08,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:39:08,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358051138] [2022-07-23 05:39:08,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:39:08,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 05:39:08,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:08,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 05:39:08,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:39:08,083 INFO L87 Difference]: Start difference. First operand 77 states and 89 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) [2022-07-23 05:39:08,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:08,274 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2022-07-23 05:39:08,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 05:39:08,275 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 [2022-07-23 05:39:08,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:08,275 INFO L225 Difference]: With dead ends: 117 [2022-07-23 05:39:08,275 INFO L226 Difference]: Without dead ends: 117 [2022-07-23 05:39:08,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:39:08,276 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 50 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:08,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 149 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 43 Unchecked, 0.2s Time] [2022-07-23 05:39:08,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-23 05:39:08,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 74. [2022-07-23 05:39:08,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.4406779661016949) internal successors, (85), 73 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) [2022-07-23 05:39:08,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2022-07-23 05:39:08,278 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 13 [2022-07-23 05:39:08,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:08,278 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2022-07-23 05:39:08,278 INFO L496 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) [2022-07-23 05:39:08,278 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2022-07-23 05:39:08,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-23 05:39:08,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:08,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:08,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:08,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:08,479 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:08,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:08,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1808065813, now seen corresponding path program 1 times [2022-07-23 05:39:08,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:08,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842322557] [2022-07-23 05:39:08,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:08,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:08,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:08,484 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:08,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-23 05:39:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:08,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 05:39:08,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 05:39:08,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:39:08,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:08,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842322557] [2022-07-23 05:39:08,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842322557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:39:08,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:39:08,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:39:08,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662794018] [2022-07-23 05:39:08,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:39:08,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:39:08,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:08,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:39:08,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:39:08,554 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:39:08,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:08,740 INFO L93 Difference]: Finished difference Result 124 states and 141 transitions. [2022-07-23 05:39:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 05:39:08,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2022-07-23 05:39:08,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:08,742 INFO L225 Difference]: With dead ends: 124 [2022-07-23 05:39:08,742 INFO L226 Difference]: Without dead ends: 124 [2022-07-23 05:39:08,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:39:08,743 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 58 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:08,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 208 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:39:08,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-07-23 05:39:08,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 76. [2022-07-23 05:39:08,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 61 states have (on average 1.4262295081967213) 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) [2022-07-23 05:39:08,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2022-07-23 05:39:08,745 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 15 [2022-07-23 05:39:08,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:08,745 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2022-07-23 05:39:08,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:39:08,745 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2022-07-23 05:39:08,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-23 05:39:08,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:08,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:08,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:08,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:08,951 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:08,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:08,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1221259799, now seen corresponding path program 1 times [2022-07-23 05:39:08,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:08,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102417978] [2022-07-23 05:39:08,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:08,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:08,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:08,953 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:08,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-23 05:39:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:08,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 05:39:08,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:09,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:09,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:39:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:09,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:09,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102417978] [2022-07-23 05:39:09,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102417978] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:39:09,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:39:09,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-07-23 05:39:09,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264136766] [2022-07-23 05:39:09,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:39:09,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-23 05:39:09,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:09,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-23 05:39:09,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-07-23 05:39:09,128 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) [2022-07-23 05:39:09,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:09,519 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2022-07-23 05:39:09,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 05:39:09,520 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 15 [2022-07-23 05:39:09,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:09,521 INFO L225 Difference]: With dead ends: 126 [2022-07-23 05:39:09,521 INFO L226 Difference]: Without dead ends: 126 [2022-07-23 05:39:09,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-07-23 05:39:09,521 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 375 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:09,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 170 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 05:39:09,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-23 05:39:09,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 74. [2022-07-23 05:39:09,523 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) [2022-07-23 05:39:09,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2022-07-23 05:39:09,524 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 15 [2022-07-23 05:39:09,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:09,524 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2022-07-23 05:39:09,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) [2022-07-23 05:39:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2022-07-23 05:39:09,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-23 05:39:09,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:09,524 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:09,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:09,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:09,731 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:09,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:09,732 INFO L85 PathProgramCache]: Analyzing trace with hash 262068158, now seen corresponding path program 1 times [2022-07-23 05:39:09,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:09,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5445515] [2022-07-23 05:39:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:09,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:09,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:09,733 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:09,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-23 05:39:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:09,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 05:39:09,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 05:39:09,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:39:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 05:39:09,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:09,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5445515] [2022-07-23 05:39:09,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5445515] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:39:09,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:39:09,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-23 05:39:09,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828450425] [2022-07-23 05:39:09,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:39:09,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 05:39:09,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:09,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 05:39:09,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:39:09,865 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) [2022-07-23 05:39:10,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:10,006 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2022-07-23 05:39:10,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 05:39:10,007 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 [2022-07-23 05:39:10,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:10,007 INFO L225 Difference]: With dead ends: 96 [2022-07-23 05:39:10,007 INFO L226 Difference]: Without dead ends: 96 [2022-07-23 05:39:10,007 INFO L412 NwaCegarLoop]: 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 [2022-07-23 05:39:10,008 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 53 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:10,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 222 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:39:10,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-07-23 05:39:10,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2022-07-23 05:39:10,009 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) [2022-07-23 05:39:10,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2022-07-23 05:39:10,009 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 16 [2022-07-23 05:39:10,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:10,009 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2022-07-23 05:39:10,010 INFO L496 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) [2022-07-23 05:39:10,010 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2022-07-23 05:39:10,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-23 05:39:10,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:10,010 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:10,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:10,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:10,211 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:10,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:10,211 INFO L85 PathProgramCache]: Analyzing trace with hash -749049092, now seen corresponding path program 1 times [2022-07-23 05:39:10,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:10,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228658203] [2022-07-23 05:39:10,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:10,212 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:10,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:10,213 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:10,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-23 05:39:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:10,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-23 05:39:10,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:10,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:10,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:39:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:10,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:10,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228658203] [2022-07-23 05:39:10,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228658203] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:39:10,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:39:10,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2022-07-23 05:39:10,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702447738] [2022-07-23 05:39:10,484 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:39:10,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-23 05:39:10,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:10,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-23 05:39:10,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-23 05:39:10,484 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) [2022-07-23 05:39:10,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:10,840 INFO L93 Difference]: Finished difference Result 112 states and 125 transitions. [2022-07-23 05:39:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-23 05:39:10,841 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 [2022-07-23 05:39:10,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:10,842 INFO L225 Difference]: With dead ends: 112 [2022-07-23 05:39:10,842 INFO L226 Difference]: Without dead ends: 112 [2022-07-23 05:39:10,842 INFO L412 NwaCegarLoop]: 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 [2022-07-23 05:39:10,842 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 147 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:10,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 349 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:39:10,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-07-23 05:39:10,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 90. [2022-07-23 05:39:10,844 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) [2022-07-23 05:39:10,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2022-07-23 05:39:10,845 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 16 [2022-07-23 05:39:10,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:10,845 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2022-07-23 05:39:10,845 INFO L496 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) [2022-07-23 05:39:10,845 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2022-07-23 05:39:10,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-23 05:39:10,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:10,846 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2022-07-23 05:39:10,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:11,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:11,053 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:11,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:11,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1817992175, now seen corresponding path program 2 times [2022-07-23 05:39:11,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:11,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146591795] [2022-07-23 05:39:11,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 05:39:11,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:11,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:11,054 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) [2022-07-23 05:39:11,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-23 05:39:11,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 05:39:11,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:39:11,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-23 05:39:11,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:11,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-23 05:39:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:11,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:39:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:11,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:11,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146591795] [2022-07-23 05:39:11,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146591795] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:39:11,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:39:11,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-07-23 05:39:11,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937322151] [2022-07-23 05:39:11,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:39:11,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-23 05:39:11,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:11,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-23 05:39:11,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-07-23 05:39:11,991 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) [2022-07-23 05:39:14,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:14,181 INFO L93 Difference]: Finished difference Result 212 states and 238 transitions. [2022-07-23 05:39:14,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-23 05:39:14,182 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 [2022-07-23 05:39:14,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:14,183 INFO L225 Difference]: With dead ends: 212 [2022-07-23 05:39:14,183 INFO L226 Difference]: Without dead ends: 212 [2022-07-23 05:39:14,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2022-07-23 05:39:14,183 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 427 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:14,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 619 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 464 Invalid, 0 Unknown, 9 Unchecked, 1.3s Time] [2022-07-23 05:39:14,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-23 05:39:14,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 106. [2022-07-23 05:39:14,185 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) [2022-07-23 05:39:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2022-07-23 05:39:14,186 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 18 [2022-07-23 05:39:14,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:14,186 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2022-07-23 05:39:14,186 INFO L496 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) [2022-07-23 05:39:14,186 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2022-07-23 05:39:14,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-23 05:39:14,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:14,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:14,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:14,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:14,387 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:14,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:14,387 INFO L85 PathProgramCache]: Analyzing trace with hash -302012765, now seen corresponding path program 1 times [2022-07-23 05:39:14,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:14,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590248084] [2022-07-23 05:39:14,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:14,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:14,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:14,390 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:14,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-23 05:39:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:14,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 05:39:14,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 05:39:14,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:39:14,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-07-23 05:39:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 05:39:14,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:14,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590248084] [2022-07-23 05:39:14,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590248084] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:39:14,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:39:14,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-07-23 05:39:14,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146159735] [2022-07-23 05:39:14,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:39:14,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 05:39:14,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:14,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 05:39:14,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:39:14,734 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) [2022-07-23 05:39:15,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:15,276 INFO L93 Difference]: Finished difference Result 163 states and 187 transitions. [2022-07-23 05:39:15,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 05:39:15,277 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 [2022-07-23 05:39:15,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:15,277 INFO L225 Difference]: With dead ends: 163 [2022-07-23 05:39:15,278 INFO L226 Difference]: Without dead ends: 163 [2022-07-23 05:39:15,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-23 05:39:15,278 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 165 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:15,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 157 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 05:39:15,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-07-23 05:39:15,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 117. [2022-07-23 05:39:15,280 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) [2022-07-23 05:39:15,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 141 transitions. [2022-07-23 05:39:15,280 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 141 transitions. Word has length 20 [2022-07-23 05:39:15,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:15,281 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 141 transitions. [2022-07-23 05:39:15,281 INFO L496 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) [2022-07-23 05:39:15,281 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 141 transitions. [2022-07-23 05:39:15,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-23 05:39:15,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:15,281 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:15,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-07-23 05:39:15,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:15,488 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:15,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:15,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1581646975, now seen corresponding path program 2 times [2022-07-23 05:39:15,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:15,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649438804] [2022-07-23 05:39:15,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 05:39:15,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:15,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:15,490 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) [2022-07-23 05:39:15,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-23 05:39:15,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 05:39:15,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:39:15,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-23 05:39:15,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:15,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:39:15,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2022-07-23 05:39:15,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 05:39:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-23 05:39:15,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:39:15,976 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:39:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-23 05:39:16,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:16,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649438804] [2022-07-23 05:39:16,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649438804] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:39:16,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:39:16,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-07-23 05:39:16,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306952456] [2022-07-23 05:39:16,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:39:16,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-23 05:39:16,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:16,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-23 05:39:16,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-23 05:39:16,030 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) [2022-07-23 05:39:16,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:16,806 INFO L93 Difference]: Finished difference Result 161 states and 195 transitions. [2022-07-23 05:39:16,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 05:39:16,808 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 [2022-07-23 05:39:16,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:16,808 INFO L225 Difference]: With dead ends: 161 [2022-07-23 05:39:16,808 INFO L226 Difference]: Without dead ends: 161 [2022-07-23 05:39:16,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-23 05:39:16,809 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 114 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:16,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 247 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 226 Invalid, 0 Unknown, 69 Unchecked, 0.6s Time] [2022-07-23 05:39:16,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-07-23 05:39:16,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 133. [2022-07-23 05:39:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 119 states have (on average 1.3697478991596639) internal successors, (163), 132 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:39:16,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 163 transitions. [2022-07-23 05:39:16,812 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 163 transitions. Word has length 20 [2022-07-23 05:39:16,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:16,812 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 163 transitions. [2022-07-23 05:39:16,812 INFO L496 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) [2022-07-23 05:39:16,813 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 163 transitions. [2022-07-23 05:39:16,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-23 05:39:16,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:16,813 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:16,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-07-23 05:39:17,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:17,020 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:17,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:17,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1786415948, now seen corresponding path program 1 times [2022-07-23 05:39:17,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:17,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165633957] [2022-07-23 05:39:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:17,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:17,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:17,022 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:17,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-23 05:39:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:17,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-23 05:39:17,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:17,128 INFO L356 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-07-23 05:39:17,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2022-07-23 05:39:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-23 05:39:17,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:39:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-23 05:39:17,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:17,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165633957] [2022-07-23 05:39:17,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165633957] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:39:17,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:39:17,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-07-23 05:39:17,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600628922] [2022-07-23 05:39:17,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:39:17,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-23 05:39:17,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:17,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 05:39:17,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-07-23 05:39:17,761 INFO L87 Difference]: Start difference. First operand 133 states and 163 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 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) [2022-07-23 05:39:18,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:18,816 INFO L93 Difference]: Finished difference Result 153 states and 186 transitions. [2022-07-23 05:39:18,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-23 05:39:18,819 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 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 [2022-07-23 05:39:18,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:18,820 INFO L225 Difference]: With dead ends: 153 [2022-07-23 05:39:18,820 INFO L226 Difference]: Without dead ends: 153 [2022-07-23 05:39:18,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2022-07-23 05:39:18,821 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 123 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:18,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 255 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 226 Invalid, 0 Unknown, 29 Unchecked, 0.7s Time] [2022-07-23 05:39:18,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-07-23 05:39:18,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 134. [2022-07-23 05:39:18,823 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) [2022-07-23 05:39:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 162 transitions. [2022-07-23 05:39:18,823 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 162 transitions. Word has length 21 [2022-07-23 05:39:18,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:18,824 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 162 transitions. [2022-07-23 05:39:18,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 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) [2022-07-23 05:39:18,824 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 162 transitions. [2022-07-23 05:39:18,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-23 05:39:18,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:18,824 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:18,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:19,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:19,032 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:19,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:19,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1242696241, now seen corresponding path program 1 times [2022-07-23 05:39:19,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:19,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587013916] [2022-07-23 05:39:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:19,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:19,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:19,034 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:19,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-23 05:39:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:19,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-23 05:39:19,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:19,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-23 05:39:19,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-07-23 05:39:19,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:19,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:39:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:19,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:19,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587013916] [2022-07-23 05:39:19,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587013916] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:39:19,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:39:19,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-07-23 05:39:19,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895834793] [2022-07-23 05:39:19,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:39:19,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-23 05:39:19,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:19,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-23 05:39:19,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-07-23 05:39:19,654 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) [2022-07-23 05:39:20,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:20,482 INFO L93 Difference]: Finished difference Result 197 states and 237 transitions. [2022-07-23 05:39:20,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-23 05:39:20,483 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 [2022-07-23 05:39:20,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:20,484 INFO L225 Difference]: With dead ends: 197 [2022-07-23 05:39:20,484 INFO L226 Difference]: Without dead ends: 197 [2022-07-23 05:39:20,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2022-07-23 05:39:20,485 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 681 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:20,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 386 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-23 05:39:20,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-23 05:39:20,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 125. [2022-07-23 05:39:20,487 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) [2022-07-23 05:39:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 150 transitions. [2022-07-23 05:39:20,488 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 150 transitions. Word has length 23 [2022-07-23 05:39:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:20,488 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 150 transitions. [2022-07-23 05:39:20,488 INFO L496 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) [2022-07-23 05:39:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 150 transitions. [2022-07-23 05:39:20,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-23 05:39:20,489 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:20,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:20,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-07-23 05:39:20,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:20,696 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:20,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:20,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1547664583, now seen corresponding path program 1 times [2022-07-23 05:39:20,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:20,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793365430] [2022-07-23 05:39:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:20,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:20,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:20,698 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:20,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-23 05:39:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:20,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-23 05:39:20,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:20,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 05:39:20,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:39:20,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:39:20,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:39:20,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:39:20,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:39:20,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:39:20,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:39:20,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:39:20,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:39:20,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:39:20,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:39:20,840 INFO L390 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 [2022-07-23 05:39:20,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2022-07-23 05:39:20,980 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:39:20,981 INFO L390 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 [2022-07-23 05:39:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 05:39:20,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:39:21,091 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_365 (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_365) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (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 [2022-07-23 05:39:21,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:39:21,097 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:39:21,097 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:39:21,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:39:21,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:39:21,199 INFO L356 Elim1Store]: treesize reduction 303, result has 14.6 percent of original size [2022-07-23 05:39:21,199 INFO L390 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 [2022-07-23 05:39:21,309 INFO L356 Elim1Store]: treesize reduction 359, result has 10.3 percent of original size [2022-07-23 05:39:21,309 INFO L390 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 [2022-07-23 05:39:21,319 INFO L356 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-07-23 05:39:21,319 INFO L390 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 [2022-07-23 05:39:21,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 05:39:21,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:21,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793365430] [2022-07-23 05:39:21,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793365430] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:39:21,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:39:21,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-23 05:39:21,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353989332] [2022-07-23 05:39:21,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:39:21,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-23 05:39:21,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:21,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 05:39:21,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2022-07-23 05:39:21,550 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) [2022-07-23 05:39:22,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:22,535 INFO L93 Difference]: Finished difference Result 167 states and 203 transitions. [2022-07-23 05:39:22,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 05:39:22,538 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 [2022-07-23 05:39:22,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:22,539 INFO L225 Difference]: With dead ends: 167 [2022-07-23 05:39:22,539 INFO L226 Difference]: Without dead ends: 167 [2022-07-23 05:39:22,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=127, Unknown=1, NotChecked=24, Total=210 [2022-07-23 05:39:22,539 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 61 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:22,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 225 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 190 Invalid, 0 Unknown, 52 Unchecked, 0.9s Time] [2022-07-23 05:39:22,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-07-23 05:39:22,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 149. [2022-07-23 05:39:22,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 135 states have (on average 1.4148148148148147) internal successors, (191), 148 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:39:22,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 191 transitions. [2022-07-23 05:39:22,542 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 191 transitions. Word has length 26 [2022-07-23 05:39:22,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:22,542 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 191 transitions. [2022-07-23 05:39:22,542 INFO L496 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) [2022-07-23 05:39:22,542 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 191 transitions. [2022-07-23 05:39:22,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-23 05:39:22,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:22,543 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:22,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:22,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:22,749 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:22,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:22,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1090844182, now seen corresponding path program 2 times [2022-07-23 05:39:22,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:22,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778372722] [2022-07-23 05:39:22,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 05:39:22,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:22,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:22,751 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:22,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-23 05:39:22,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 05:39:22,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:39:22,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 05:39:22,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:22,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 05:39:22,839 INFO L356 Elim1Store]: treesize reduction 43, result has 31.7 percent of original size [2022-07-23 05:39:22,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 31 [2022-07-23 05:39:22,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-23 05:39:22,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:39:22,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:22,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778372722] [2022-07-23 05:39:22,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778372722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:39:22,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:39:22,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:39:22,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918340566] [2022-07-23 05:39:22,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:39:22,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:39:22,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:22,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:39:22,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:39:22,934 INFO L87 Difference]: Start difference. First operand 149 states and 191 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) [2022-07-23 05:39:23,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:23,002 INFO L93 Difference]: Finished difference Result 157 states and 203 transitions. [2022-07-23 05:39:23,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 05:39:23,004 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 [2022-07-23 05:39:23,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:23,004 INFO L225 Difference]: With dead ends: 157 [2022-07-23 05:39:23,004 INFO L226 Difference]: Without dead ends: 157 [2022-07-23 05:39:23,004 INFO L412 NwaCegarLoop]: 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 [2022-07-23 05:39:23,005 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 10 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:23,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 123 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2022-07-23 05:39:23,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-23 05:39:23,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2022-07-23 05:39:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 139 states have (on average 1.4244604316546763) internal successors, (198), 152 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:39:23,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 198 transitions. [2022-07-23 05:39:23,007 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 198 transitions. Word has length 27 [2022-07-23 05:39:23,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:23,008 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 198 transitions. [2022-07-23 05:39:23,008 INFO L496 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) [2022-07-23 05:39:23,008 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 198 transitions. [2022-07-23 05:39:23,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-23 05:39:23,008 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:23,008 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:23,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:23,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:23,215 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:23,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:23,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1090844181, now seen corresponding path program 1 times [2022-07-23 05:39:23,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:23,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820875323] [2022-07-23 05:39:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:23,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:23,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:23,216 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:23,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-23 05:39:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:23,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-23 05:39:23,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:23,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-23 05:39:23,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:39:23,472 INFO L356 Elim1Store]: treesize reduction 35, result has 12.5 percent of original size [2022-07-23 05:39:23,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-07-23 05:39:23,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 05:39:23,766 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-23 05:39:23,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:39:23,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 05:39:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-23 05:39:24,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:24,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820875323] [2022-07-23 05:39:24,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820875323] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:39:24,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:39:24,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2022-07-23 05:39:24,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135769092] [2022-07-23 05:39:24,479 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:39:24,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-23 05:39:24,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:24,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-23 05:39:24,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-23 05:39:24,480 INFO L87 Difference]: Start difference. First operand 153 states and 198 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) [2022-07-23 05:39:24,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:24,991 INFO L93 Difference]: Finished difference Result 160 states and 206 transitions. [2022-07-23 05:39:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 05:39:24,992 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 [2022-07-23 05:39:24,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:24,996 INFO L225 Difference]: With dead ends: 160 [2022-07-23 05:39:24,996 INFO L226 Difference]: Without dead ends: 160 [2022-07-23 05:39:24,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-07-23 05:39:24,999 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 36 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:24,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 324 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 178 Invalid, 0 Unknown, 94 Unchecked, 0.4s Time] [2022-07-23 05:39:24,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-23 05:39:25,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2022-07-23 05:39:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 142 states have (on average 1.4295774647887325) internal successors, (203), 155 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:39:25,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 203 transitions. [2022-07-23 05:39:25,002 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 203 transitions. Word has length 27 [2022-07-23 05:39:25,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:25,002 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 203 transitions. [2022-07-23 05:39:25,002 INFO L496 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) [2022-07-23 05:39:25,002 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 203 transitions. [2022-07-23 05:39:25,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-23 05:39:25,002 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:25,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:25,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-07-23 05:39:25,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:25,210 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:25,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:25,210 INFO L85 PathProgramCache]: Analyzing trace with hash -397297604, now seen corresponding path program 1 times [2022-07-23 05:39:25,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:25,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372005408] [2022-07-23 05:39:25,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:25,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:25,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:25,212 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:25,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-23 05:39:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:25,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-23 05:39:25,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-23 05:39:31,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:39:31,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:31,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372005408] [2022-07-23 05:39:31,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372005408] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:39:31,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:39:31,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 05:39:31,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5216608] [2022-07-23 05:39:31,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:39:31,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 05:39:31,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:31,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 05:39:31,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2022-07-23 05:39:31,587 INFO L87 Difference]: Start difference. First operand 156 states and 203 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) [2022-07-23 05:39:31,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:31,629 INFO L93 Difference]: Finished difference Result 171 states and 219 transitions. [2022-07-23 05:39:31,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 05:39:31,629 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 [2022-07-23 05:39:31,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:31,629 INFO L225 Difference]: With dead ends: 171 [2022-07-23 05:39:31,630 INFO L226 Difference]: Without dead ends: 146 [2022-07-23 05:39:31,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2022-07-23 05:39:31,630 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:31,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 162 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 41 Unchecked, 0.0s Time] [2022-07-23 05:39:31,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-07-23 05:39:31,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2022-07-23 05:39:31,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 130 states have (on average 1.4692307692307693) internal successors, (191), 143 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:39:31,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 191 transitions. [2022-07-23 05:39:31,633 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 191 transitions. Word has length 28 [2022-07-23 05:39:31,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:31,633 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 191 transitions. [2022-07-23 05:39:31,633 INFO L496 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) [2022-07-23 05:39:31,633 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 191 transitions. [2022-07-23 05:39:31,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-23 05:39:31,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:31,634 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:31,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-07-23 05:39:31,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:31,842 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:31,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:31,842 INFO L85 PathProgramCache]: Analyzing trace with hash 543568763, now seen corresponding path program 1 times [2022-07-23 05:39:31,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:31,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656766197] [2022-07-23 05:39:31,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:31,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:31,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:31,844 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:31,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-23 05:39:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:31,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 05:39:31,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-23 05:39:31,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:39:31,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:31,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656766197] [2022-07-23 05:39:31,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656766197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:39:31,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:39:31,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 05:39:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208996336] [2022-07-23 05:39:31,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:39:31,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:39:31,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:31,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:39:31,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:39:31,940 INFO L87 Difference]: Start difference. First operand 144 states and 191 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 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) [2022-07-23 05:39:32,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:32,049 INFO L93 Difference]: Finished difference Result 144 states and 183 transitions. [2022-07-23 05:39:32,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:39:32,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 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 [2022-07-23 05:39:32,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:32,051 INFO L225 Difference]: With dead ends: 144 [2022-07-23 05:39:32,051 INFO L226 Difference]: Without dead ends: 144 [2022-07-23 05:39:32,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:39:32,052 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 36 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:32,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 87 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:39:32,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-07-23 05:39:32,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2022-07-23 05:39:32,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 129 states have (on average 1.4031007751937985) internal successors, (181), 140 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:39:32,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 181 transitions. [2022-07-23 05:39:32,054 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 181 transitions. Word has length 28 [2022-07-23 05:39:32,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:32,055 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 181 transitions. [2022-07-23 05:39:32,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 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) [2022-07-23 05:39:32,055 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 181 transitions. [2022-07-23 05:39:32,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-23 05:39:32,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:32,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:32,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-07-23 05:39:32,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:32,263 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:32,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:32,264 INFO L85 PathProgramCache]: Analyzing trace with hash 543568764, now seen corresponding path program 1 times [2022-07-23 05:39:32,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:32,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484783450] [2022-07-23 05:39:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:32,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:32,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:32,265 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:32,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-23 05:39:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:32,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 05:39:32,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-23 05:39:32,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:39:32,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:32,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484783450] [2022-07-23 05:39:32,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484783450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:39:32,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:39:32,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 05:39:32,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460178507] [2022-07-23 05:39:32,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:39:32,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 05:39:32,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:32,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 05:39:32,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:39:32,417 INFO L87 Difference]: Start difference. First operand 141 states and 181 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) [2022-07-23 05:39:32,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:32,665 INFO L93 Difference]: Finished difference Result 203 states and 259 transitions. [2022-07-23 05:39:32,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 05:39:32,666 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 [2022-07-23 05:39:32,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:32,667 INFO L225 Difference]: With dead ends: 203 [2022-07-23 05:39:32,667 INFO L226 Difference]: Without dead ends: 203 [2022-07-23 05:39:32,667 INFO L412 NwaCegarLoop]: 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 [2022-07-23 05:39:32,668 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 270 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:32,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 92 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:39:32,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-23 05:39:32,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 139. [2022-07-23 05:39:32,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 127 states have (on average 1.3858267716535433) internal successors, (176), 138 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:39:32,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 176 transitions. [2022-07-23 05:39:32,671 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 176 transitions. Word has length 28 [2022-07-23 05:39:32,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:32,671 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 176 transitions. [2022-07-23 05:39:32,671 INFO L496 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) [2022-07-23 05:39:32,671 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 176 transitions. [2022-07-23 05:39:32,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-23 05:39:32,671 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:32,671 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:32,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-07-23 05:39:32,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:32,879 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:32,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:32,880 INFO L85 PathProgramCache]: Analyzing trace with hash 590171529, now seen corresponding path program 3 times [2022-07-23 05:39:32,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:32,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526405758] [2022-07-23 05:39:32,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 05:39:32,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:32,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:32,881 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:32,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-23 05:39:33,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-23 05:39:33,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:39:33,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-23 05:39:33,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:33,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-23 05:39:33,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:39:33,209 INFO L356 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2022-07-23 05:39:33,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 30 [2022-07-23 05:39:33,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 05:39:33,505 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:33,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:39:34,324 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 05:39:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:34,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:34,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526405758] [2022-07-23 05:39:34,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526405758] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:39:34,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:39:34,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2022-07-23 05:39:34,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508564491] [2022-07-23 05:39:34,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:39:34,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-23 05:39:34,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:34,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-23 05:39:34,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-07-23 05:39:34,860 INFO L87 Difference]: Start difference. First operand 139 states and 176 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 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) [2022-07-23 05:39:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:37,392 INFO L93 Difference]: Finished difference Result 240 states and 292 transitions. [2022-07-23 05:39:37,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-23 05:39:37,392 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 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 [2022-07-23 05:39:37,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:37,393 INFO L225 Difference]: With dead ends: 240 [2022-07-23 05:39:37,393 INFO L226 Difference]: Without dead ends: 240 [2022-07-23 05:39:37,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=192, Invalid=738, Unknown=0, NotChecked=0, Total=930 [2022-07-23 05:39:37,394 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 291 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:37,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 293 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 397 Invalid, 0 Unknown, 217 Unchecked, 1.3s Time] [2022-07-23 05:39:37,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-07-23 05:39:37,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 215. [2022-07-23 05:39:37,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 203 states have (on average 1.3300492610837438) internal successors, (270), 214 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:39:37,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 270 transitions. [2022-07-23 05:39:37,397 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 270 transitions. Word has length 28 [2022-07-23 05:39:37,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:37,397 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 270 transitions. [2022-07-23 05:39:37,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 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) [2022-07-23 05:39:37,398 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 270 transitions. [2022-07-23 05:39:37,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-23 05:39:37,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:37,398 INFO L195 NwaCegarLoop]: 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] [2022-07-23 05:39:37,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-07-23 05:39:37,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:37,606 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:37,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:37,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1391261449, now seen corresponding path program 1 times [2022-07-23 05:39:37,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:37,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678807683] [2022-07-23 05:39:37,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:37,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:37,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:37,607 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:37,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-07-23 05:39:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:37,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 05:39:37,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:37,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-23 05:39:37,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:39:37,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:37,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678807683] [2022-07-23 05:39:37,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678807683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:39:37,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:39:37,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:39:37,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757722052] [2022-07-23 05:39:37,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:39:37,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:39:37,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:37,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:39:37,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:39:37,704 INFO L87 Difference]: Start difference. First operand 215 states and 270 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) [2022-07-23 05:39:37,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:37,717 INFO L93 Difference]: Finished difference Result 216 states and 268 transitions. [2022-07-23 05:39:37,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:39:37,717 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 [2022-07-23 05:39:37,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:37,718 INFO L225 Difference]: With dead ends: 216 [2022-07-23 05:39:37,718 INFO L226 Difference]: Without dead ends: 216 [2022-07-23 05:39:37,718 INFO L412 NwaCegarLoop]: 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 [2022-07-23 05:39:37,719 INFO L413 NwaCegarLoop]: 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 [2022-07-23 05:39:37,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:39:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-23 05:39:37,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-07-23 05:39:37,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 205 states have (on average 1.3073170731707318) internal successors, (268), 215 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:39:37,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 268 transitions. [2022-07-23 05:39:37,722 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 268 transitions. Word has length 32 [2022-07-23 05:39:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:37,722 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 268 transitions. [2022-07-23 05:39:37,722 INFO L496 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) [2022-07-23 05:39:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 268 transitions. [2022-07-23 05:39:37,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-23 05:39:37,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:37,723 INFO L195 NwaCegarLoop]: 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] [2022-07-23 05:39:37,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:37,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:37,930 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:37,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:37,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1391252418, now seen corresponding path program 1 times [2022-07-23 05:39:37,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:37,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052222932] [2022-07-23 05:39:37,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:39:37,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:37,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:37,932 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:37,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-07-23 05:39:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:39:38,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 05:39:38,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-23 05:39:38,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:39:38,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-07-23 05:39:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-23 05:39:38,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:38,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052222932] [2022-07-23 05:39:38,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052222932] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:39:38,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:39:38,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-07-23 05:39:38,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696836241] [2022-07-23 05:39:38,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:39:38,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-23 05:39:38,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:38,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-23 05:39:38,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-23 05:39:38,437 INFO L87 Difference]: Start difference. First operand 216 states and 268 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) [2022-07-23 05:39:39,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:39,576 INFO L93 Difference]: Finished difference Result 802 states and 1009 transitions. [2022-07-23 05:39:39,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-23 05:39:39,577 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 [2022-07-23 05:39:39,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:39,578 INFO L225 Difference]: With dead ends: 802 [2022-07-23 05:39:39,578 INFO L226 Difference]: Without dead ends: 802 [2022-07-23 05:39:39,579 INFO L412 NwaCegarLoop]: 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 [2022-07-23 05:39:39,579 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 832 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:39,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 230 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-23 05:39:39,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-07-23 05:39:39,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 311. [2022-07-23 05:39:39,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 301 states have (on average 1.3521594684385383) internal successors, (407), 310 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:39:39,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 407 transitions. [2022-07-23 05:39:39,586 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 407 transitions. Word has length 32 [2022-07-23 05:39:39,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:39,586 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 407 transitions. [2022-07-23 05:39:39,587 INFO L496 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) [2022-07-23 05:39:39,587 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 407 transitions. [2022-07-23 05:39:39,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-23 05:39:39,587 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:39,587 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:39:39,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:39,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:39,796 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:39,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:39,796 INFO L85 PathProgramCache]: Analyzing trace with hash 795842271, now seen corresponding path program 2 times [2022-07-23 05:39:39,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:39,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327346569] [2022-07-23 05:39:39,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 05:39:39,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:39,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:39,812 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 05:39:39,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-07-23 05:39:39,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 05:39:39,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:39:39,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-23 05:39:39,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:39,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 05:39:39,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-07-23 05:39:40,183 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-23 05:39:40,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:39:41,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:39:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-23 05:39:41,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:41,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327346569] [2022-07-23 05:39:41,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327346569] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:39:41,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:39:41,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2022-07-23 05:39:41,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660341812] [2022-07-23 05:39:41,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:39:41,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 05:39:41,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:41,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 05:39:41,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:39:41,663 INFO L87 Difference]: Start difference. First operand 311 states and 407 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) [2022-07-23 05:39:42,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:39:42,040 INFO L93 Difference]: Finished difference Result 322 states and 423 transitions. [2022-07-23 05:39:42,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 05:39:42,041 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 [2022-07-23 05:39:42,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:39:42,042 INFO L225 Difference]: With dead ends: 322 [2022-07-23 05:39:42,042 INFO L226 Difference]: Without dead ends: 322 [2022-07-23 05:39:42,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-23 05:39:42,042 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 21 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 05:39:42,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 139 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 40 Unchecked, 0.3s Time] [2022-07-23 05:39:42,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-07-23 05:39:42,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 304. [2022-07-23 05:39:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 295 states have (on average 1.352542372881356) internal successors, (399), 303 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:39:42,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 399 transitions. [2022-07-23 05:39:42,046 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 399 transitions. Word has length 33 [2022-07-23 05:39:42,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:39:42,047 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 399 transitions. [2022-07-23 05:39:42,047 INFO L496 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) [2022-07-23 05:39:42,047 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 399 transitions. [2022-07-23 05:39:42,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-23 05:39:42,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:39:42,047 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2022-07-23 05:39:42,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-07-23 05:39:42,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:39:42,253 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:39:42,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:39:42,254 INFO L85 PathProgramCache]: Analyzing trace with hash -563143139, now seen corresponding path program 3 times [2022-07-23 05:39:42,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:39:42,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726718120] [2022-07-23 05:39:42,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 05:39:42,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:39:42,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:39:42,255 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) [2022-07-23 05:39:42,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-07-23 05:39:42,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-07-23 05:39:42,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:39:42,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-23 05:39:42,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:39:42,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-23 05:39:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:42,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:39:45,715 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:39:45,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:39:45,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726718120] [2022-07-23 05:39:45,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726718120] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:39:45,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:39:45,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-07-23 05:39:45,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094814078] [2022-07-23 05:39:45,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:39:45,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-23 05:39:45,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:39:45,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-23 05:39:45,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2022-07-23 05:39:45,717 INFO L87 Difference]: Start difference. First operand 304 states and 399 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) [2022-07-23 05:40:02,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:40:02,627 INFO L93 Difference]: Finished difference Result 1193 states and 1602 transitions. [2022-07-23 05:40:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-23 05:40:02,628 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 [2022-07-23 05:40:02,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:40:02,631 INFO L225 Difference]: With dead ends: 1193 [2022-07-23 05:40:02,631 INFO L226 Difference]: Without dead ends: 1193 [2022-07-23 05:40:02,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=547, Invalid=1259, Unknown=0, NotChecked=0, Total=1806 [2022-07-23 05:40:02,632 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 1453 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 1722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-23 05:40:02,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 2006 Invalid, 1722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1623 Invalid, 0 Unknown, 25 Unchecked, 5.3s Time] [2022-07-23 05:40:02,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2022-07-23 05:40:02,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 336. [2022-07-23 05:40:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 327 states have (on average 1.342507645259939) internal successors, (439), 335 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:40:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 439 transitions. [2022-07-23 05:40:02,639 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 439 transitions. Word has length 34 [2022-07-23 05:40:02,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:40:02,639 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 439 transitions. [2022-07-23 05:40:02,640 INFO L496 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) [2022-07-23 05:40:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 439 transitions. [2022-07-23 05:40:02,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-23 05:40:02,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:40:02,640 INFO L195 NwaCegarLoop]: 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] [2022-07-23 05:40:02,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-07-23 05:40:02,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:40:02,847 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:40:02,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:40:02,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1267793515, now seen corresponding path program 1 times [2022-07-23 05:40:02,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:40:02,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932441968] [2022-07-23 05:40:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:40:02,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:40:02,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:40:02,849 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) [2022-07-23 05:40:02,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-07-23 05:40:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:40:02,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 05:40:02,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:40:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-23 05:40:02,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:40:03,017 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-23 05:40:03,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:40:03,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932441968] [2022-07-23 05:40:03,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932441968] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:40:03,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:40:03,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-23 05:40:03,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637708589] [2022-07-23 05:40:03,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:40:03,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 05:40:03,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:40:03,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 05:40:03,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:40:03,018 INFO L87 Difference]: Start difference. First operand 336 states and 439 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) [2022-07-23 05:40:03,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:40:03,240 INFO L93 Difference]: Finished difference Result 320 states and 404 transitions. [2022-07-23 05:40:03,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 05:40:03,241 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 [2022-07-23 05:40:03,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:40:03,242 INFO L225 Difference]: With dead ends: 320 [2022-07-23 05:40:03,242 INFO L226 Difference]: Without dead ends: 320 [2022-07-23 05:40:03,242 INFO L412 NwaCegarLoop]: 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 [2022-07-23 05:40:03,242 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 54 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:40:03,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 149 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:40:03,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-07-23 05:40:03,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 309. [2022-07-23 05:40:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 300 states have (on average 1.31) internal successors, (393), 308 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:40:03,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 393 transitions. [2022-07-23 05:40:03,246 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 393 transitions. Word has length 34 [2022-07-23 05:40:03,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:40:03,246 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 393 transitions. [2022-07-23 05:40:03,247 INFO L496 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) [2022-07-23 05:40:03,247 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 393 transitions. [2022-07-23 05:40:03,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-23 05:40:03,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:40:03,247 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:40:03,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-07-23 05:40:03,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:40:03,455 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:40:03,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:40:03,455 INFO L85 PathProgramCache]: Analyzing trace with hash 717604305, now seen corresponding path program 4 times [2022-07-23 05:40:03,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:40:03,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483959642] [2022-07-23 05:40:03,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 05:40:03,456 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:40:03,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:40:03,457 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) [2022-07-23 05:40:03,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-07-23 05:40:03,570 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 05:40:03,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:40:03,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-23 05:40:03,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:40:03,665 INFO L356 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-07-23 05:40:03,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2022-07-23 05:40:03,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-07-23 05:40:03,932 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 05:40:03,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:40:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 05:40:04,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:40:04,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483959642] [2022-07-23 05:40:04,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483959642] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:40:04,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:40:04,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2022-07-23 05:40:04,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762302308] [2022-07-23 05:40:04,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:40:04,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-23 05:40:04,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:40:04,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-23 05:40:04,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-07-23 05:40:04,743 INFO L87 Difference]: Start difference. First operand 309 states and 393 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) [2022-07-23 05:40:11,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:40:11,375 INFO L93 Difference]: Finished difference Result 685 states and 891 transitions. [2022-07-23 05:40:11,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-23 05:40:11,376 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 [2022-07-23 05:40:11,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:40:11,379 INFO L225 Difference]: With dead ends: 685 [2022-07-23 05:40:11,379 INFO L226 Difference]: Without dead ends: 685 [2022-07-23 05:40:11,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=663, Invalid=2417, Unknown=0, NotChecked=0, Total=3080 [2022-07-23 05:40:11,383 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 1560 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:40:11,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1560 Valid, 894 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1332 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-23 05:40:11,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-07-23 05:40:11,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 500. [2022-07-23 05:40:11,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 491 states have (on average 1.3441955193482689) internal successors, (660), 499 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:40:11,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 660 transitions. [2022-07-23 05:40:11,391 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 660 transitions. Word has length 36 [2022-07-23 05:40:11,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:40:11,392 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 660 transitions. [2022-07-23 05:40:11,392 INFO L496 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) [2022-07-23 05:40:11,392 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 660 transitions. [2022-07-23 05:40:11,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-23 05:40:11,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:40:11,392 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:40:11,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-07-23 05:40:11,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:40:11,601 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:40:11,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:40:11,601 INFO L85 PathProgramCache]: Analyzing trace with hash -411523054, now seen corresponding path program 5 times [2022-07-23 05:40:11,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:40:11,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730756616] [2022-07-23 05:40:11,601 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 05:40:11,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:40:11,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:40:11,602 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) [2022-07-23 05:40:11,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-07-23 05:40:11,842 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-07-23 05:40:11,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:40:11,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-23 05:40:11,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:40:11,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-23 05:40:12,161 INFO L356 Elim1Store]: treesize reduction 50, result has 20.6 percent of original size [2022-07-23 05:40:12,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2022-07-23 05:40:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:40:12,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:40:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:40:14,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:40:14,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730756616] [2022-07-23 05:40:14,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730756616] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:40:14,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:40:14,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2022-07-23 05:40:14,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488740248] [2022-07-23 05:40:14,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:40:14,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-23 05:40:14,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:40:14,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-23 05:40:14,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2022-07-23 05:40:14,550 INFO L87 Difference]: Start difference. First operand 500 states and 660 transitions. Second operand has 30 states, 29 states have (on average 2.689655172413793) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:40:18,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:40:18,061 INFO L93 Difference]: Finished difference Result 543 states and 710 transitions. [2022-07-23 05:40:18,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-23 05:40:18,061 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.689655172413793) internal successors, (78), 30 states have internal predecessors, (78), 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 [2022-07-23 05:40:18,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:40:18,062 INFO L225 Difference]: With dead ends: 543 [2022-07-23 05:40:18,063 INFO L226 Difference]: Without dead ends: 543 [2022-07-23 05:40:18,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=501, Invalid=1949, Unknown=0, NotChecked=0, Total=2450 [2022-07-23 05:40:18,063 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 43 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 257 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:40:18,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 394 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 257 Unchecked, 0.1s Time] [2022-07-23 05:40:18,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-07-23 05:40:18,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 518. [2022-07-23 05:40:18,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 509 states have (on average 1.337917485265226) internal successors, (681), 517 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:40:18,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 681 transitions. [2022-07-23 05:40:18,069 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 681 transitions. Word has length 40 [2022-07-23 05:40:18,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:40:18,070 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 681 transitions. [2022-07-23 05:40:18,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.689655172413793) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:40:18,070 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 681 transitions. [2022-07-23 05:40:18,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-23 05:40:18,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:40:18,070 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:40:18,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-07-23 05:40:18,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:40:18,279 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:40:18,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:40:18,279 INFO L85 PathProgramCache]: Analyzing trace with hash -282034220, now seen corresponding path program 6 times [2022-07-23 05:40:18,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:40:18,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489574596] [2022-07-23 05:40:18,279 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-23 05:40:18,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:40:18,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:40:18,280 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) [2022-07-23 05:40:18,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-07-23 05:40:18,451 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-07-23 05:40:18,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:40:18,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-23 05:40:18,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:40:18,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:18,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2022-07-23 05:40:18,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 05:40:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-23 05:40:18,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:40:20,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:20,151 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-23 05:40:20,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:40:20,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489574596] [2022-07-23 05:40:20,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489574596] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:40:20,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:40:20,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-07-23 05:40:20,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087061881] [2022-07-23 05:40:20,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:40:20,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-23 05:40:20,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:40:20,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-23 05:40:20,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-07-23 05:40:20,152 INFO L87 Difference]: Start difference. First operand 518 states and 681 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) [2022-07-23 05:40:24,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:40:24,736 INFO L93 Difference]: Finished difference Result 941 states and 1246 transitions. [2022-07-23 05:40:24,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-23 05:40:24,737 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 40 [2022-07-23 05:40:24,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:40:24,739 INFO L225 Difference]: With dead ends: 941 [2022-07-23 05:40:24,739 INFO L226 Difference]: Without dead ends: 941 [2022-07-23 05:40:24,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=358, Invalid=902, Unknown=0, NotChecked=0, Total=1260 [2022-07-23 05:40:24,740 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 876 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-23 05:40:24,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 552 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 757 Invalid, 0 Unknown, 147 Unchecked, 2.4s Time] [2022-07-23 05:40:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-07-23 05:40:24,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 699. [2022-07-23 05:40:24,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 690 states have (on average 1.3420289855072465) internal successors, (926), 698 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:40:24,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 926 transitions. [2022-07-23 05:40:24,747 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 926 transitions. Word has length 40 [2022-07-23 05:40:24,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:40:24,748 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 926 transitions. [2022-07-23 05:40:24,748 INFO L496 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) [2022-07-23 05:40:24,748 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 926 transitions. [2022-07-23 05:40:24,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-23 05:40:24,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:40:24,748 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-23 05:40:24,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-07-23 05:40:24,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:40:24,956 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:40:24,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:40:24,957 INFO L85 PathProgramCache]: Analyzing trace with hash 306205251, now seen corresponding path program 1 times [2022-07-23 05:40:24,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:40:24,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398644283] [2022-07-23 05:40:24,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:40:24,957 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:40:24,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:40:24,958 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) [2022-07-23 05:40:24,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-07-23 05:40:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:40:25,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-23 05:40:25,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:40:25,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-23 05:40:25,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-07-23 05:40:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-23 05:40:25,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:40:25,765 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-23 05:40:25,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:40:25,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398644283] [2022-07-23 05:40:25,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398644283] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:40:25,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:40:25,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-07-23 05:40:25,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798307711] [2022-07-23 05:40:25,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:40:25,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-23 05:40:25,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:40:25,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-23 05:40:25,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-07-23 05:40:25,766 INFO L87 Difference]: Start difference. First operand 699 states and 926 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) [2022-07-23 05:40:26,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:40:26,743 INFO L93 Difference]: Finished difference Result 947 states and 1263 transitions. [2022-07-23 05:40:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-23 05:40:26,744 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 [2022-07-23 05:40:26,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:40:26,746 INFO L225 Difference]: With dead ends: 947 [2022-07-23 05:40:26,746 INFO L226 Difference]: Without dead ends: 947 [2022-07-23 05:40:26,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2022-07-23 05:40:26,747 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 764 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 05:40:26,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 386 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-23 05:40:26,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-07-23 05:40:26,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 858. [2022-07-23 05:40:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 849 states have (on average 1.3769140164899882) internal successors, (1169), 857 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:40:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1169 transitions. [2022-07-23 05:40:26,755 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1169 transitions. Word has length 44 [2022-07-23 05:40:26,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:40:26,756 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1169 transitions. [2022-07-23 05:40:26,756 INFO L496 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) [2022-07-23 05:40:26,756 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1169 transitions. [2022-07-23 05:40:26,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-23 05:40:26,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:40:26,757 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:40:26,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-07-23 05:40:26,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:40:26,964 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:40:26,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:40:26,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1599170913, now seen corresponding path program 1 times [2022-07-23 05:40:26,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:40:26,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528180457] [2022-07-23 05:40:26,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:40:26,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:40:26,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:40:26,966 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) [2022-07-23 05:40:26,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-07-23 05:40:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:40:27,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-23 05:40:27,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:40:27,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-23 05:40:27,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-07-23 05:40:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-23 05:40:27,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:40:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-23 05:40:28,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:40:28,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528180457] [2022-07-23 05:40:28,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528180457] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:40:28,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:40:28,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-07-23 05:40:28,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855830308] [2022-07-23 05:40:28,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:40:28,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-23 05:40:28,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:40:28,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-23 05:40:28,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-07-23 05:40:28,147 INFO L87 Difference]: Start difference. First operand 858 states and 1169 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 24 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) [2022-07-23 05:40:30,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:40:30,038 INFO L93 Difference]: Finished difference Result 1289 states and 1744 transitions. [2022-07-23 05:40:30,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-23 05:40:30,039 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 24 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 [2022-07-23 05:40:30,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:40:30,041 INFO L225 Difference]: With dead ends: 1289 [2022-07-23 05:40:30,041 INFO L226 Difference]: Without dead ends: 1289 [2022-07-23 05:40:30,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=392, Invalid=1330, Unknown=0, NotChecked=0, Total=1722 [2022-07-23 05:40:30,042 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 895 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-23 05:40:30,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 791 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-23 05:40:30,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2022-07-23 05:40:30,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 872. [2022-07-23 05:40:30,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 863 states have (on average 1.3684820393974508) internal successors, (1181), 871 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:40:30,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1181 transitions. [2022-07-23 05:40:30,052 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1181 transitions. Word has length 45 [2022-07-23 05:40:30,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:40:30,052 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1181 transitions. [2022-07-23 05:40:30,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 24 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) [2022-07-23 05:40:30,052 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1181 transitions. [2022-07-23 05:40:30,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-23 05:40:30,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:40:30,053 INFO L195 NwaCegarLoop]: 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] [2022-07-23 05:40:30,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-07-23 05:40:30,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:40:30,260 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:40:30,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:40:30,261 INFO L85 PathProgramCache]: Analyzing trace with hash -484234273, now seen corresponding path program 2 times [2022-07-23 05:40:30,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:40:30,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287397631] [2022-07-23 05:40:30,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 05:40:30,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:40:30,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:40:30,263 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) [2022-07-23 05:40:30,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-07-23 05:40:30,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 05:40:30,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:40:30,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-23 05:40:30,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:40:30,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 05:40:30,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-23 05:40:30,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:30,502 INFO L356 Elim1Store]: treesize reduction 28, result has 34.9 percent of original size [2022-07-23 05:40:30,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-07-23 05:40:30,512 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:40:30,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-23 05:40:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-23 05:40:30,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:40:36,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:37,149 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-23 05:40:37,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:40:37,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287397631] [2022-07-23 05:40:37,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287397631] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:40:37,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:40:37,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-07-23 05:40:37,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030873406] [2022-07-23 05:40:37,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:40:37,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-23 05:40:37,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:40:37,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 05:40:37,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-23 05:40:37,150 INFO L87 Difference]: Start difference. First operand 872 states and 1181 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) [2022-07-23 05:40:37,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:40:37,671 INFO L93 Difference]: Finished difference Result 873 states and 1169 transitions. [2022-07-23 05:40:37,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 05:40:37,672 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 45 [2022-07-23 05:40:37,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:40:37,674 INFO L225 Difference]: With dead ends: 873 [2022-07-23 05:40:37,674 INFO L226 Difference]: Without dead ends: 873 [2022-07-23 05:40:37,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-07-23 05:40:37,675 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 74 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 05:40:37,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 110 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 54 Unchecked, 0.3s Time] [2022-07-23 05:40:37,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2022-07-23 05:40:37,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 872. [2022-07-23 05:40:37,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 863 states have (on average 1.354577056778679) internal successors, (1169), 871 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:40:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1169 transitions. [2022-07-23 05:40:37,683 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1169 transitions. Word has length 45 [2022-07-23 05:40:37,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:40:37,683 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1169 transitions. [2022-07-23 05:40:37,683 INFO L496 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) [2022-07-23 05:40:37,683 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1169 transitions. [2022-07-23 05:40:37,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-23 05:40:37,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:40:37,684 INFO L195 NwaCegarLoop]: 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] [2022-07-23 05:40:37,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-07-23 05:40:37,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:40:37,890 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:40:37,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:40:37,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2126360568, now seen corresponding path program 1 times [2022-07-23 05:40:37,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:40:37,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711669518] [2022-07-23 05:40:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:40:37,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:40:37,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:40:37,892 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) [2022-07-23 05:40:37,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-07-23 05:40:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:40:38,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 05:40:38,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:40:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-23 05:40:38,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:40:38,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-07-23 05:40:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-23 05:40:38,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:40:38,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711669518] [2022-07-23 05:40:38,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711669518] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:40:38,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:40:38,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-07-23 05:40:38,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865592099] [2022-07-23 05:40:38,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:40:38,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-23 05:40:38,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:40:38,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 05:40:38,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-23 05:40:38,665 INFO L87 Difference]: Start difference. First operand 872 states and 1169 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) [2022-07-23 05:40:39,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:40:39,553 INFO L93 Difference]: Finished difference Result 1105 states and 1421 transitions. [2022-07-23 05:40:39,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-23 05:40:39,554 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 [2022-07-23 05:40:39,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:40:39,556 INFO L225 Difference]: With dead ends: 1105 [2022-07-23 05:40:39,556 INFO L226 Difference]: Without dead ends: 1105 [2022-07-23 05:40:39,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2022-07-23 05:40:39,557 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 489 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 05:40:39,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 163 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 05:40:39,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-07-23 05:40:39,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 872. [2022-07-23 05:40:39,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 863 states have (on average 1.320973348783314) internal successors, (1140), 871 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:40:39,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1140 transitions. [2022-07-23 05:40:39,565 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1140 transitions. Word has length 46 [2022-07-23 05:40:39,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:40:39,565 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1140 transitions. [2022-07-23 05:40:39,565 INFO L496 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) [2022-07-23 05:40:39,565 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1140 transitions. [2022-07-23 05:40:39,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-23 05:40:39,566 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:40:39,566 INFO L195 NwaCegarLoop]: 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] [2022-07-23 05:40:39,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-07-23 05:40:39,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:40:39,774 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:40:39,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:40:39,774 INFO L85 PathProgramCache]: Analyzing trace with hash -326352172, now seen corresponding path program 1 times [2022-07-23 05:40:39,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:40:39,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314763685] [2022-07-23 05:40:39,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:40:39,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:40:39,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:40:39,776 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) [2022-07-23 05:40:39,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-07-23 05:40:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:40:39,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-23 05:40:39,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:40:39,968 INFO L356 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-07-23 05:40:39,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2022-07-23 05:40:40,374 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-23 05:40:40,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:40:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-23 05:40:40,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:40:40,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314763685] [2022-07-23 05:40:40,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314763685] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:40:40,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:40:40,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2022-07-23 05:40:40,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618155654] [2022-07-23 05:40:40,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:40:40,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-23 05:40:40,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:40:40,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-23 05:40:40,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-23 05:40:40,998 INFO L87 Difference]: Start difference. First operand 872 states and 1140 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) [2022-07-23 05:40:41,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:40:41,255 INFO L93 Difference]: Finished difference Result 872 states and 1137 transitions. [2022-07-23 05:40:41,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 05:40:41,256 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 [2022-07-23 05:40:41,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:40:41,258 INFO L225 Difference]: With dead ends: 872 [2022-07-23 05:40:41,258 INFO L226 Difference]: Without dead ends: 872 [2022-07-23 05:40:41,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-07-23 05:40:41,259 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 44 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:40:41,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 148 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 48 Unchecked, 0.2s Time] [2022-07-23 05:40:41,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-07-23 05:40:41,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2022-07-23 05:40:41,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 863 states have (on average 1.3174971031286211) internal successors, (1137), 871 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:40:41,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1137 transitions. [2022-07-23 05:40:41,266 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1137 transitions. Word has length 46 [2022-07-23 05:40:41,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:40:41,266 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1137 transitions. [2022-07-23 05:40:41,267 INFO L496 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) [2022-07-23 05:40:41,267 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1137 transitions. [2022-07-23 05:40:41,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-23 05:40:41,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:40:41,267 INFO L195 NwaCegarLoop]: 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] [2022-07-23 05:40:41,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-07-23 05:40:41,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:40:41,475 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:40:41,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:40:41,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1349955383, now seen corresponding path program 1 times [2022-07-23 05:40:41,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:40:41,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720836408] [2022-07-23 05:40:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:40:41,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:40:41,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:40:41,481 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) [2022-07-23 05:40:41,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-07-23 05:40:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:40:41,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-23 05:40:41,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:40:48,202 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-23 05:40:48,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:40:48,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:40:48,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720836408] [2022-07-23 05:40:48,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720836408] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:40:48,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:40:48,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 05:40:48,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630071253] [2022-07-23 05:40:48,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:40:48,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 05:40:48,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:40:48,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 05:40:48,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2022-07-23 05:40:48,203 INFO L87 Difference]: Start difference. First operand 872 states and 1137 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) [2022-07-23 05:40:48,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:40:48,236 INFO L93 Difference]: Finished difference Result 1104 states and 1443 transitions. [2022-07-23 05:40:48,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 05:40:48,236 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 [2022-07-23 05:40:48,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:40:48,238 INFO L225 Difference]: With dead ends: 1104 [2022-07-23 05:40:48,238 INFO L226 Difference]: Without dead ends: 1082 [2022-07-23 05:40:48,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2022-07-23 05:40:48,239 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:40:48,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 180 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 41 Unchecked, 0.0s Time] [2022-07-23 05:40:48,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-07-23 05:40:48,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1007. [2022-07-23 05:40:48,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 998 states have (on average 1.3356713426853708) internal successors, (1333), 1006 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:40:48,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1333 transitions. [2022-07-23 05:40:48,248 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1333 transitions. Word has length 50 [2022-07-23 05:40:48,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:40:48,248 INFO L495 AbstractCegarLoop]: Abstraction has 1007 states and 1333 transitions. [2022-07-23 05:40:48,249 INFO L496 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) [2022-07-23 05:40:48,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1333 transitions. [2022-07-23 05:40:48,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-23 05:40:48,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:40:48,249 INFO L195 NwaCegarLoop]: 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] [2022-07-23 05:40:48,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-07-23 05:40:48,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:40:48,458 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:40:48,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:40:48,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1278180873, now seen corresponding path program 3 times [2022-07-23 05:40:48,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:40:48,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679322892] [2022-07-23 05:40:48,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 05:40:48,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:40:48,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:40:48,460 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) [2022-07-23 05:40:48,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-07-23 05:40:48,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-23 05:40:48,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:40:48,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 05:40:48,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:40:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-23 05:40:48,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:40:48,976 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 05:40:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-23 05:40:49,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:40:49,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679322892] [2022-07-23 05:40:49,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679322892] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:40:49,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:40:49,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-07-23 05:40:49,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478826404] [2022-07-23 05:40:49,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:40:49,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-23 05:40:49,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:40:49,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 05:40:49,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-07-23 05:40:49,363 INFO L87 Difference]: Start difference. First operand 1007 states and 1333 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:40:50,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:40:50,297 INFO L93 Difference]: Finished difference Result 1349 states and 1730 transitions. [2022-07-23 05:40:50,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-23 05:40:50,298 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 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 [2022-07-23 05:40:50,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:40:50,304 INFO L225 Difference]: With dead ends: 1349 [2022-07-23 05:40:50,304 INFO L226 Difference]: Without dead ends: 1349 [2022-07-23 05:40:50,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2022-07-23 05:40:50,304 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 373 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 05:40:50,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 181 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-23 05:40:50,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2022-07-23 05:40:50,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1006. [2022-07-23 05:40:50,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 998 states have (on average 1.2895791583166332) internal successors, (1287), 1005 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:40:50,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1287 transitions. [2022-07-23 05:40:50,313 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1287 transitions. Word has length 52 [2022-07-23 05:40:50,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:40:50,313 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1287 transitions. [2022-07-23 05:40:50,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:40:50,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1287 transitions. [2022-07-23 05:40:50,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-23 05:40:50,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:40:50,314 INFO L195 NwaCegarLoop]: 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] [2022-07-23 05:40:50,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-07-23 05:40:50,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:40:50,521 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:40:50,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:40:50,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1986422419, now seen corresponding path program 1 times [2022-07-23 05:40:50,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:40:50,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901981456] [2022-07-23 05:40:50,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:40:50,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:40:50,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:40:50,523 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) [2022-07-23 05:40:50,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-07-23 05:40:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:40:50,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-23 05:40:50,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:40:50,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 05:40:50,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:50,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:50,778 INFO L390 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 [2022-07-23 05:40:50,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2022-07-23 05:40:50,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:50,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:50,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:50,954 INFO L390 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 [2022-07-23 05:40:51,023 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 73 [2022-07-23 05:40:51,494 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:40:51,494 INFO L390 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 [2022-07-23 05:40:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-23 05:40:51,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:40:52,122 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1427 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1427) |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 (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (bvadd (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (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 [2022-07-23 05:40:52,159 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1427 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse1 (bvmul (_ bv4 32) |c_ULTIMATE.start_lis_~i~0#1|))) (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| .cse1) ((_ extract 7 0) (_ bv1 32))) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1 (_ bv1 32)) ((_ extract 15 8) (_ bv1 32))) (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1) ((_ extract 23 16) (_ bv1 32))) (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1) ((_ extract 31 24) (_ bv1 32))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1427) |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 (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (bvadd (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (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 [2022-07-23 05:40:52,227 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1427 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse1 (bvmul (_ bv4 32) |c_ULTIMATE.start_lis_~i~0#1|))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1) ((_ extract 7 0) (_ bv1 32))) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1 (_ bv5 32)) ((_ extract 15 8) (_ bv1 32))) (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1) ((_ extract 23 16) (_ bv1 32))) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32) .cse1) ((_ extract 31 24) (_ bv1 32))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1427) |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 (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (bvadd (_ bv1 32) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (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 [2022-07-23 05:40:52,271 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1421 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1427 (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_1421))) (store .cse1 |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse2 (bvmul (_ bv4 32) |c_ULTIMATE.start_lis_~i~0#1|))) (store (store (store (store (select .cse1 |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse2) ((_ extract 7 0) (_ bv1 32))) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| .cse2 (_ bv5 32)) ((_ extract 15 8) (_ bv1 32))) (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse2) ((_ extract 23 16) (_ bv1 32))) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32) .cse2) ((_ extract 31 24) (_ bv1 32)))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1427) |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 (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (bvadd (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (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 [2022-07-23 05:40:52,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,283 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:52,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:40:52,423 INFO L356 Elim1Store]: treesize reduction 303, result has 14.6 percent of original size [2022-07-23 05:40:52,424 INFO L390 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 [2022-07-23 05:40:52,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 861 treesize of output 837 [2022-07-23 05:40:52,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,618 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,618 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,628 INFO L390 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 [2022-07-23 05:40:52,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,714 INFO L390 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 [2022-07-23 05:40:52,792 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,793 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,793 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,837 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,862 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,971 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,971 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:52,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:40:53,219 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:40:53,220 INFO L390 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 [2022-07-23 05:40:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 5 not checked. [2022-07-23 05:40:56,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:40:56,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901981456] [2022-07-23 05:40:56,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901981456] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:40:56,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:40:56,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-07-23 05:40:56,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081675741] [2022-07-23 05:40:56,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:40:56,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-23 05:40:56,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:40:56,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-23 05:40:56,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=292, Unknown=4, NotChecked=148, Total=506 [2022-07-23 05:40:56,234 INFO L87 Difference]: Start difference. First operand 1006 states and 1287 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) [2022-07-23 05:40:59,746 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 [] [2022-07-23 05:41:01,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:41:01,281 INFO L93 Difference]: Finished difference Result 1071 states and 1349 transitions. [2022-07-23 05:41:01,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-23 05:41:01,281 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 [2022-07-23 05:41:01,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:41:01,283 INFO L225 Difference]: With dead ends: 1071 [2022-07-23 05:41:01,284 INFO L226 Difference]: Without dead ends: 1071 [2022-07-23 05:41:01,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=174, Invalid=650, Unknown=4, NotChecked=228, Total=1056 [2022-07-23 05:41:01,284 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 205 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 48 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 402 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-23 05:41:01,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 432 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 505 Invalid, 1 Unknown, 402 Unchecked, 3.4s Time] [2022-07-23 05:41:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-07-23 05:41:01,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 976. [2022-07-23 05:41:01,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 968 states have (on average 1.2882231404958677) internal successors, (1247), 975 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:41:01,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1247 transitions. [2022-07-23 05:41:01,292 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1247 transitions. Word has length 53 [2022-07-23 05:41:01,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:41:01,292 INFO L495 AbstractCegarLoop]: Abstraction has 976 states and 1247 transitions. [2022-07-23 05:41:01,292 INFO L496 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) [2022-07-23 05:41:01,292 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1247 transitions. [2022-07-23 05:41:01,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-23 05:41:01,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:41:01,293 INFO L195 NwaCegarLoop]: 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] [2022-07-23 05:41:01,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-07-23 05:41:01,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:41:01,503 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:41:01,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:41:01,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1956787805, now seen corresponding path program 1 times [2022-07-23 05:41:01,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:41:01,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834238353] [2022-07-23 05:41:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:41:01,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:41:01,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:41:01,504 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) [2022-07-23 05:41:01,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-07-23 05:41:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:41:01,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 05:41:01,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:41:01,685 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-23 05:41:01,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:41:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-23 05:41:01,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:41:01,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834238353] [2022-07-23 05:41:01,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834238353] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:41:01,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:41:01,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-23 05:41:01,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101788851] [2022-07-23 05:41:01,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:41:01,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 05:41:01,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:41:01,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 05:41:01,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:41:01,735 INFO L87 Difference]: Start difference. First operand 976 states and 1247 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) [2022-07-23 05:41:02,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:41:02,125 INFO L93 Difference]: Finished difference Result 1111 states and 1391 transitions. [2022-07-23 05:41:02,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 05:41:02,126 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 [2022-07-23 05:41:02,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:41:02,128 INFO L225 Difference]: With dead ends: 1111 [2022-07-23 05:41:02,128 INFO L226 Difference]: Without dead ends: 1111 [2022-07-23 05:41:02,128 INFO L412 NwaCegarLoop]: 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 [2022-07-23 05:41:02,128 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 191 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 05:41:02,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 154 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 05:41:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2022-07-23 05:41:02,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1012. [2022-07-23 05:41:02,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 1004 states have (on average 1.2639442231075697) internal successors, (1269), 1011 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:41:02,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1269 transitions. [2022-07-23 05:41:02,136 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1269 transitions. Word has length 55 [2022-07-23 05:41:02,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:41:02,136 INFO L495 AbstractCegarLoop]: Abstraction has 1012 states and 1269 transitions. [2022-07-23 05:41:02,136 INFO L496 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) [2022-07-23 05:41:02,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1269 transitions. [2022-07-23 05:41:02,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-23 05:41:02,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:41:02,137 INFO L195 NwaCegarLoop]: 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] [2022-07-23 05:41:02,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-07-23 05:41:02,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:41:02,356 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-23 05:41:02,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:41:02,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1472253864, now seen corresponding path program 1 times [2022-07-23 05:41:02,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:41:02,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543288762] [2022-07-23 05:41:02,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:41:02,357 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:41:02,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:41:02,358 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) [2022-07-23 05:41:02,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-07-23 05:41:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:41:02,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-23 05:41:02,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:41:02,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 05:41:02,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:02,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:02,695 INFO L390 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 [2022-07-23 05:41:02,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2022-07-23 05:41:02,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:02,908 INFO L390 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 [2022-07-23 05:41:02,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2022-07-23 05:41:03,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:03,400 INFO L390 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 [2022-07-23 05:41:03,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2022-07-23 05:41:03,563 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:41:03,564 INFO L390 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 [2022-07-23 05:41:03,588 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-23 05:41:03,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:41:03,738 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1548 (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_1548) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (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 [2022-07-23 05:41:03,781 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1547 (_ BitVec 8)) (v_ArrVal_1546 (_ BitVec 8)) (v_ArrVal_1543 (_ BitVec 8)) (v_ArrVal_1545 (_ BitVec 8)) (v_ArrVal_1548 (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 (_ bv4 32) |c_ULTIMATE.start_lis_~i~0#1|))) (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| .cse1) v_ArrVal_1546) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1 (_ bv1 32)) v_ArrVal_1545) (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1) v_ArrVal_1547) (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1) v_ArrVal_1543))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1548) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (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 [2022-07-23 05:41:03,891 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1547 (_ BitVec 8)) (v_ArrVal_1546 (_ BitVec 8)) (v_ArrVal_1543 (_ BitVec 8)) (v_ArrVal_1545 (_ BitVec 8)) (v_ArrVal_1548 (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| (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset|) v_ArrVal_1546) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) v_ArrVal_1545) (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset|) v_ArrVal_1547) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) v_ArrVal_1543)) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1548) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (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 [2022-07-23 05:41:03,917 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1547 (_ BitVec 8)) (v_ArrVal_1546 (_ BitVec 8)) (v_ArrVal_1543 (_ BitVec 8)) (v_ArrVal_1545 (_ BitVec 8)) (v_ArrVal_1542 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1548 (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_1542))) (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 (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset|) v_ArrVal_1546) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) v_ArrVal_1545) (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset|) v_ArrVal_1547) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) v_ArrVal_1543))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1548) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (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 [2022-07-23 05:41:03,938 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1547 (_ BitVec 8)) (v_ArrVal_1546 (_ BitVec 8)) (v_ArrVal_1537 (_ BitVec 8)) (v_ArrVal_1543 (_ BitVec 8)) (v_ArrVal_1545 (_ BitVec 8)) (v_ArrVal_1542 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1541 (_ BitVec 8)) (v_ArrVal_1540 (_ BitVec 8)) (v_ArrVal_1539 (_ BitVec 8)) (v_ArrVal_1548 (Array (_ BitVec 32) (_ 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 (_ bv4 32) |c_ULTIMATE.start_lis_~i~0#1|))) (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| .cse2) v_ArrVal_1539) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| .cse2 (_ bv1 32)) v_ArrVal_1541) (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse2) v_ArrVal_1540) (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse2) v_ArrVal_1537))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1542))) (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 (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset|) v_ArrVal_1546) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) v_ArrVal_1545) (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset|) v_ArrVal_1547) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) v_ArrVal_1543))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1548) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (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 [2022-07-23 05:41:03,974 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1547 (_ BitVec 8)) (v_ArrVal_1546 (_ BitVec 8)) (v_ArrVal_1537 (_ BitVec 8)) (v_ArrVal_1543 (_ BitVec 8)) (v_ArrVal_1545 (_ BitVec 8)) (v_ArrVal_1542 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1541 (_ BitVec 8)) (v_ArrVal_1540 (_ BitVec 8)) (v_ArrVal_1539 (_ BitVec 8)) (v_ArrVal_1548 (Array (_ BitVec 32) (_ 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 (_ bv4 32) |c_ULTIMATE.start_lis_~i~0#1|))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse2) v_ArrVal_1539) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| .cse2 (_ bv5 32)) v_ArrVal_1541) (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse2) v_ArrVal_1540) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32) .cse2) v_ArrVal_1537))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1542))) (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 (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset|) v_ArrVal_1546) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) v_ArrVal_1545) (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset|) v_ArrVal_1547) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) v_ArrVal_1543))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1548) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (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 [2022-07-23 05:41:04,004 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1547 (_ BitVec 8)) (v_ArrVal_1546 (_ BitVec 8)) (v_ArrVal_1537 (_ BitVec 8)) (v_ArrVal_1543 (_ BitVec 8)) (v_ArrVal_1545 (_ BitVec 8)) (v_ArrVal_1542 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1541 (_ BitVec 8)) (v_ArrVal_1540 (_ BitVec 8)) (v_ArrVal_1536 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1539 (_ BitVec 8)) (v_ArrVal_1548 (Array (_ BitVec 32) (_ 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_1536))) (store .cse2 |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse3 (bvmul (_ bv4 32) |c_ULTIMATE.start_lis_~i~0#1|))) (store (store (store (store (select .cse2 |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse3) v_ArrVal_1539) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| .cse3 (_ bv5 32)) v_ArrVal_1541) (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse3) v_ArrVal_1540) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32) .cse3) v_ArrVal_1537)))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1542))) (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 (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset|) v_ArrVal_1546) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)) v_ArrVal_1545) (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset|) v_ArrVal_1547) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32)) v_ArrVal_1543))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1548) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (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 [2022-07-23 05:41:04,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:04,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:41:04,140 INFO L356 Elim1Store]: treesize reduction 303, result has 14.6 percent of original size [2022-07-23 05:41:04,140 INFO L390 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 [2022-07-23 05:41:04,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 569 treesize of output 553 [2022-07-23 05:41:04,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,208 INFO L390 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 715 treesize of output 603 [2022-07-23 05:41:04,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,221 INFO L390 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 859 treesize of output 803 [2022-07-23 05:41:04,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,234 INFO L390 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 803 treesize of output 775 [2022-07-23 05:41:04,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,281 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,281 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,281 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:41:04,337 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:41:04,338 INFO L390 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