./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/diff-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e8d55036 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/diff-alloca-2.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 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 21:45:53,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 21:45:53,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 21:45:53,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 21:45:53,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 21:45:53,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 21:45:53,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 21:45:53,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 21:45:53,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 21:45:53,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 21:45:53,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 21:45:53,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 21:45:53,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 21:45:53,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 21:45:53,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 21:45:53,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 21:45:53,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 21:45:53,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 21:45:53,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 21:45:53,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 21:45:53,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 21:45:53,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 21:45:53,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 21:45:53,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 21:45:53,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 21:45:53,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 21:45:53,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 21:45:53,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 21:45:53,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 21:45:53,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 21:45:53,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 21:45:53,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 21:45:53,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 21:45:53,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 21:45:53,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 21:45:53,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 21:45:53,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 21:45:53,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 21:45:53,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 21:45:53,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 21:45:53,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 21:45:53,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-15 21:45:53,701 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 21:45:53,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 21:45:53,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 21:45:53,702 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 21:45:53,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 21:45:53,703 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 21:45:53,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 21:45:53,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 21:45:53,704 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 21:45:53,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 21:45:53,705 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 21:45:53,705 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 21:45:53,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 21:45:53,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 21:45:53,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 21:45:53,705 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 21:45:53,706 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 21:45:53,706 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 21:45:53,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 21:45:53,706 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 21:45:53,706 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 21:45:53,706 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 21:45:53,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 21:45:53,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 21:45:53,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 21:45:53,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 21:45:53,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 21:45:53,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 21:45:53,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 21:45:53,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 21:45:53,708 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 21:45:53,708 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 21:45:53,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 21:45:53,708 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 21:45:53,708 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe [2023-02-15 21:45:53,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 21:45:53,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 21:45:53,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 21:45:53,893 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 21:45:53,893 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 21:45:53,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2023-02-15 21:45:54,848 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 21:45:55,095 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 21:45:55,095 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2023-02-15 21:45:55,102 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f0c7822d/f886e9c35fe744f0b00207c271ea0140/FLAG8bf740cc0 [2023-02-15 21:45:55,118 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f0c7822d/f886e9c35fe744f0b00207c271ea0140 [2023-02-15 21:45:55,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 21:45:55,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 21:45:55,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 21:45:55,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 21:45:55,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 21:45:55,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:45:55" (1/1) ... [2023-02-15 21:45:55,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d929cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:45:55, skipping insertion in model container [2023-02-15 21:45:55,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:45:55" (1/1) ... [2023-02-15 21:45:55,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 21:45:55,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 21:45:55,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 21:45:55,381 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) [2023-02-15 21:45:55,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c5fdc03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:45:55, skipping insertion in model container [2023-02-15 21:45:55,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 21:45:55,383 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-15 21:45:55,385 INFO L158 Benchmark]: Toolchain (without parser) took 262.51ms. Allocated memory is still 146.8MB. Free memory was 108.8MB in the beginning and 97.2MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 21:45:55,386 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 146.8MB. Free memory is still 115.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 21:45:55,386 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.62ms. Allocated memory is still 146.8MB. Free memory was 108.8MB in the beginning and 97.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 21:45:55,388 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 146.8MB. Free memory is still 115.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.62ms. Allocated memory is still 146.8MB. Free memory was 108.8MB in the beginning and 97.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 545]: 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/diff-alloca-2.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 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 21:45:56,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 21:45:56,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 21:45:57,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 21:45:57,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 21:45:57,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 21:45:57,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 21:45:57,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 21:45:57,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 21:45:57,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 21:45:57,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 21:45:57,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 21:45:57,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 21:45:57,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 21:45:57,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 21:45:57,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 21:45:57,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 21:45:57,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 21:45:57,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 21:45:57,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 21:45:57,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 21:45:57,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 21:45:57,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 21:45:57,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 21:45:57,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 21:45:57,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 21:45:57,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 21:45:57,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 21:45:57,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 21:45:57,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 21:45:57,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 21:45:57,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 21:45:57,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 21:45:57,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 21:45:57,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 21:45:57,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 21:45:57,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 21:45:57,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 21:45:57,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 21:45:57,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 21:45:57,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 21:45:57,053 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-15 21:45:57,077 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 21:45:57,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 21:45:57,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 21:45:57,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 21:45:57,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 21:45:57,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 21:45:57,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 21:45:57,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 21:45:57,079 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 21:45:57,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 21:45:57,080 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 21:45:57,080 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 21:45:57,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 21:45:57,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 21:45:57,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 21:45:57,081 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 21:45:57,081 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 21:45:57,081 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 21:45:57,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 21:45:57,081 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 21:45:57,081 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 21:45:57,082 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 21:45:57,082 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 21:45:57,082 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 21:45:57,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 21:45:57,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 21:45:57,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 21:45:57,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 21:45:57,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 21:45:57,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 21:45:57,088 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 21:45:57,088 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 21:45:57,088 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 21:45:57,089 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 21:45:57,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 21:45:57,089 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 21:45:57,089 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 21:45:57,089 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe [2023-02-15 21:45:57,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 21:45:57,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 21:45:57,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 21:45:57,367 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 21:45:57,368 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 21:45:57,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2023-02-15 21:45:58,360 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 21:45:58,582 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 21:45:58,584 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2023-02-15 21:45:58,598 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27abba139/812bf5b1120341bc9509252f3c72d1e3/FLAG05b435909 [2023-02-15 21:45:58,615 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27abba139/812bf5b1120341bc9509252f3c72d1e3 [2023-02-15 21:45:58,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 21:45:58,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 21:45:58,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 21:45:58,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 21:45:58,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 21:45:58,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:45:58" (1/1) ... [2023-02-15 21:45:58,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@289824f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:45:58, skipping insertion in model container [2023-02-15 21:45:58,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:45:58" (1/1) ... [2023-02-15 21:45:58,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 21:45:58,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 21:45:58,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 21:45:58,874 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-15 21:45:58,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 21:45:58,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 21:45:58,927 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 21:45:58,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 21:45:58,995 INFO L208 MainTranslator]: Completed translation [2023-02-15 21:45:58,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:45:58 WrapperNode [2023-02-15 21:45:58,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 21:45:58,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 21:45:58,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 21:45:58,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 21:45:59,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:45:58" (1/1) ... [2023-02-15 21:45:59,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:45:58" (1/1) ... [2023-02-15 21:45:59,034 INFO L138 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2023-02-15 21:45:59,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 21:45:59,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 21:45:59,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 21:45:59,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 21:45:59,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:45:58" (1/1) ... [2023-02-15 21:45:59,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:45:58" (1/1) ... [2023-02-15 21:45:59,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:45:58" (1/1) ... [2023-02-15 21:45:59,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:45:58" (1/1) ... [2023-02-15 21:45:59,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:45:58" (1/1) ... [2023-02-15 21:45:59,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:45:58" (1/1) ... [2023-02-15 21:45:59,059 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:45:58" (1/1) ... [2023-02-15 21:45:59,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:45:58" (1/1) ... [2023-02-15 21:45:59,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 21:45:59,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 21:45:59,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 21:45:59,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 21:45:59,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:45:58" (1/1) ... [2023-02-15 21:45:59,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 21:45:59,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:45:59,087 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) [2023-02-15 21:45:59,091 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 [2023-02-15 21:45:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-15 21:45:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 21:45:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 21:45:59,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-15 21:45:59,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 21:45:59,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 21:45:59,222 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 21:45:59,223 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 21:45:59,522 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 21:45:59,526 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 21:45:59,528 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-15 21:45:59,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:45:59 BoogieIcfgContainer [2023-02-15 21:45:59,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 21:45:59,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 21:45:59,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 21:45:59,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 21:45:59,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 09:45:58" (1/3) ... [2023-02-15 21:45:59,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759540c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:45:59, skipping insertion in model container [2023-02-15 21:45:59,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:45:58" (2/3) ... [2023-02-15 21:45:59,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759540c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:45:59, skipping insertion in model container [2023-02-15 21:45:59,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:45:59" (3/3) ... [2023-02-15 21:45:59,536 INFO L112 eAbstractionObserver]: Analyzing ICFG diff-alloca-2.i [2023-02-15 21:45:59,548 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 21:45:59,548 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-02-15 21:45:59,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 21:45:59,607 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=PETRI_NET, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@21a5fc25, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 21:45:59,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-02-15 21:45:59,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:45:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 21:45:59,615 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:45:59,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:45:59,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:45:59,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:45:59,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2023-02-15 21:45:59,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:45:59,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005378555] [2023-02-15 21:45:59,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:45:59,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:45:59,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:45:59,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:45:59,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-15 21:45:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:45:59,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 21:45:59,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:45:59,821 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-02-15 21:45:59,822 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 22 treesize of output 29 [2023-02-15 21:45:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 21:45:59,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:45:59,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:45:59,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005378555] [2023-02-15 21:45:59,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005378555] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:45:59,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:45:59,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 21:45:59,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047524810] [2023-02-15 21:45:59,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:45:59,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 21:45:59,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:45:59,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 21:45:59,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 21:45:59,924 INFO L87 Difference]: Start difference. First operand has 42 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 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 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:45:59,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:45:59,987 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2023-02-15 21:45:59,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 21:45:59,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-02-15 21:45:59,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:45:59,994 INFO L225 Difference]: With dead ends: 41 [2023-02-15 21:45:59,994 INFO L226 Difference]: Without dead ends: 39 [2023-02-15 21:45:59,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 21:45:59,997 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 36 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 21:45:59,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 39 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 21:46:00,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-15 21:46:00,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-02-15 21:46:00,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:00,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2023-02-15 21:46:00,025 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 7 [2023-02-15 21:46:00,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:00,026 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2023-02-15 21:46:00,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:00,026 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2023-02-15 21:46:00,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 21:46:00,027 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:00,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:46:00,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:00,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:00,233 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:00,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:00,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2023-02-15 21:46:00,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:00,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245527837] [2023-02-15 21:46:00,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:00,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:00,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:00,235 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:00,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-15 21:46:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:00,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 21:46:00,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:00,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:00,342 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2023-02-15 21:46:00,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 20 [2023-02-15 21:46:00,356 INFO L350 Elim1Store]: Elim1 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 10 treesize of output 8 [2023-02-15 21:46:00,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 21:46:00,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:46:00,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:00,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245527837] [2023-02-15 21:46:00,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245527837] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:46:00,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:46:00,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 21:46:00,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120716138] [2023-02-15 21:46:00,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:46:00,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 21:46:00,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:00,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 21:46:00,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 21:46:00,403 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:00,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:00,553 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2023-02-15 21:46:00,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 21:46:00,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-02-15 21:46:00,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:00,555 INFO L225 Difference]: With dead ends: 79 [2023-02-15 21:46:00,555 INFO L226 Difference]: Without dead ends: 79 [2023-02-15 21:46:00,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 21:46:00,555 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 47 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:00,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 165 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:46:00,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-02-15 21:46:00,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 43. [2023-02-15 21:46:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 42 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2023-02-15 21:46:00,560 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 7 [2023-02-15 21:46:00,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:00,560 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2023-02-15 21:46:00,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:00,561 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2023-02-15 21:46:00,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 21:46:00,561 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:00,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:46:00,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:00,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:00,768 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:00,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:00,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2023-02-15 21:46:00,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:00,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308867778] [2023-02-15 21:46:00,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:00,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:00,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:00,770 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:00,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-15 21:46:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:00,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 21:46:00,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:00,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:00,866 INFO L321 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2023-02-15 21:46:00,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 24 [2023-02-15 21:46:00,874 INFO L350 Elim1Store]: Elim1 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 10 treesize of output 8 [2023-02-15 21:46:00,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 21:46:00,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:46:00,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:00,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308867778] [2023-02-15 21:46:00,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308867778] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:46:00,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:46:00,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 21:46:00,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002931533] [2023-02-15 21:46:00,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:46:00,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 21:46:00,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:00,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 21:46:00,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 21:46:00,939 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:01,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:01,037 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2023-02-15 21:46:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 21:46:01,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-02-15 21:46:01,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:01,038 INFO L225 Difference]: With dead ends: 47 [2023-02-15 21:46:01,038 INFO L226 Difference]: Without dead ends: 47 [2023-02-15 21:46:01,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 21:46:01,039 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 47 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:01,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 69 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:46:01,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-15 21:46:01,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2023-02-15 21:46:01,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:01,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2023-02-15 21:46:01,042 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 7 [2023-02-15 21:46:01,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:01,043 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2023-02-15 21:46:01,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:01,043 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2023-02-15 21:46:01,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-15 21:46:01,043 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:01,043 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:46:01,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:01,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:01,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:01,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:01,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1906083540, now seen corresponding path program 1 times [2023-02-15 21:46:01,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:01,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334306668] [2023-02-15 21:46:01,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:01,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:01,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:01,271 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:01,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-15 21:46:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:01,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 21:46:01,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 21:46:01,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:46:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 21:46:01,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:01,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334306668] [2023-02-15 21:46:01,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334306668] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:46:01,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:46:01,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-15 21:46:01,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873986608] [2023-02-15 21:46:01,460 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:46:01,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 21:46:01,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:01,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 21:46:01,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-15 21:46:01,461 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 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) [2023-02-15 21:46:01,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:01,527 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2023-02-15 21:46:01,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 21:46:01,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 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 11 [2023-02-15 21:46:01,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:01,530 INFO L225 Difference]: With dead ends: 77 [2023-02-15 21:46:01,530 INFO L226 Difference]: Without dead ends: 77 [2023-02-15 21:46:01,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-15 21:46:01,531 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 69 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:01,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 187 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:46:01,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-15 21:46:01,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 48. [2023-02-15 21:46:01,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 47 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) [2023-02-15 21:46:01,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2023-02-15 21:46:01,538 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 11 [2023-02-15 21:46:01,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:01,540 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2023-02-15 21:46:01,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 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) [2023-02-15 21:46:01,541 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2023-02-15 21:46:01,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-15 21:46:01,541 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:01,541 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:46:01,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:01,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:01,749 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:01,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:01,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2023-02-15 21:46:01,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:01,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430535227] [2023-02-15 21:46:01,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:01,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:01,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:01,751 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:01,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-15 21:46:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:01,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-15 21:46:01,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:01,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:01,841 INFO L321 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2023-02-15 21:46:01,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 24 [2023-02-15 21:46:01,848 INFO L350 Elim1Store]: Elim1 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 10 treesize of output 8 [2023-02-15 21:46:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 21:46:01,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:46:02,332 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 21:46:02,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 21:46:02,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:02,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430535227] [2023-02-15 21:46:02,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430535227] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:46:02,369 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:46:02,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-02-15 21:46:02,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7431704] [2023-02-15 21:46:02,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:46:02,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 21:46:02,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:02,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 21:46:02,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-02-15 21:46:02,370 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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) [2023-02-15 21:46:03,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:03,100 INFO L93 Difference]: Finished difference Result 118 states and 137 transitions. [2023-02-15 21:46:03,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 21:46:03,102 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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 11 [2023-02-15 21:46:03,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:03,103 INFO L225 Difference]: With dead ends: 118 [2023-02-15 21:46:03,103 INFO L226 Difference]: Without dead ends: 118 [2023-02-15 21:46:03,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2023-02-15 21:46:03,103 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 371 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:03,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 160 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 21:46:03,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-02-15 21:46:03,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 60. [2023-02-15 21:46:03,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 59 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:03,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2023-02-15 21:46:03,107 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 11 [2023-02-15 21:46:03,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:03,107 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2023-02-15 21:46:03,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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) [2023-02-15 21:46:03,108 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2023-02-15 21:46:03,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 21:46:03,108 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:03,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:46:03,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:03,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:03,309 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:03,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:03,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2090265385, now seen corresponding path program 1 times [2023-02-15 21:46:03,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:03,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29670755] [2023-02-15 21:46:03,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:03,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:03,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:03,310 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:03,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-15 21:46:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:03,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 21:46:03,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:03,387 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-02-15 21:46:03,388 INFO L350 Elim1Store]: Elim1 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 33 [2023-02-15 21:46:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:03,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:46:03,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:03,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29670755] [2023-02-15 21:46:03,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29670755] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:46:03,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:46:03,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 21:46:03,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998101327] [2023-02-15 21:46:03,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:46:03,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 21:46:03,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:03,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 21:46:03,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 21:46:03,408 INFO L87 Difference]: Start difference. First operand 60 states and 71 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) [2023-02-15 21:46:03,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:03,442 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2023-02-15 21:46:03,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 21:46:03,442 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 [2023-02-15 21:46:03,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:03,443 INFO L225 Difference]: With dead ends: 59 [2023-02-15 21:46:03,444 INFO L226 Difference]: Without dead ends: 59 [2023-02-15 21:46:03,444 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 [2023-02-15 21:46:03,446 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 29 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:03,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 36 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 21:46:03,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-15 21:46:03,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-02-15 21:46:03,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 58 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2023-02-15 21:46:03,449 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2023-02-15 21:46:03,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:03,450 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2023-02-15 21:46:03,450 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) [2023-02-15 21:46:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2023-02-15 21:46:03,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 21:46:03,450 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:03,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:46:03,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-02-15 21:46:03,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:03,657 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:03,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:03,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2090265384, now seen corresponding path program 1 times [2023-02-15 21:46:03,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:03,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273008149] [2023-02-15 21:46:03,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:03,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:03,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:03,659 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:03,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-15 21:46:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:03,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 21:46:03,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:03,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:03,741 INFO L321 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-02-15 21:46:03,741 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 12 treesize of output 23 [2023-02-15 21:46:03,747 INFO L350 Elim1Store]: Elim1 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 39 treesize of output 37 [2023-02-15 21:46:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:03,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:46:03,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:03,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273008149] [2023-02-15 21:46:03,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273008149] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:46:03,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:46:03,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 21:46:03,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457380971] [2023-02-15 21:46:03,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:46:03,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 21:46:03,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:03,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 21:46:03,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 21:46:03,794 INFO L87 Difference]: Start difference. First operand 59 states and 70 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) [2023-02-15 21:46:03,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:03,931 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2023-02-15 21:46:03,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 21:46:03,931 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 [2023-02-15 21:46:03,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:03,932 INFO L225 Difference]: With dead ends: 117 [2023-02-15 21:46:03,932 INFO L226 Difference]: Without dead ends: 117 [2023-02-15 21:46:03,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 21:46:03,933 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 80 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:03,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 144 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:46:03,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-02-15 21:46:03,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 87. [2023-02-15 21:46:03,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 76 states have (on average 1.355263157894737) internal successors, (103), 86 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) [2023-02-15 21:46:03,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2023-02-15 21:46:03,938 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 13 [2023-02-15 21:46:03,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:03,938 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2023-02-15 21:46:03,938 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) [2023-02-15 21:46:03,938 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2023-02-15 21:46:03,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 21:46:03,939 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:03,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:46:03,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-02-15 21:46:04,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:04,147 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:04,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:04,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1811674902, now seen corresponding path program 1 times [2023-02-15 21:46:04,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:04,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841875245] [2023-02-15 21:46:04,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:04,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:04,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:04,149 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:04,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-15 21:46:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:04,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 21:46:04,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:04,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:04,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:04,236 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-02-15 21:46:04,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2023-02-15 21:46:04,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-02-15 21:46:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:04,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:46:04,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:04,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841875245] [2023-02-15 21:46:04,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841875245] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:46:04,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:46:04,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 21:46:04,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435354719] [2023-02-15 21:46:04,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:46:04,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 21:46:04,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:04,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 21:46:04,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 21:46:04,364 INFO L87 Difference]: Start difference. First operand 87 states and 103 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) [2023-02-15 21:46:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:04,469 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2023-02-15 21:46:04,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 21:46:04,477 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 [2023-02-15 21:46:04,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:04,478 INFO L225 Difference]: With dead ends: 91 [2023-02-15 21:46:04,478 INFO L226 Difference]: Without dead ends: 91 [2023-02-15 21:46:04,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 21:46:04,478 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 78 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:04,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 62 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:46:04,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-02-15 21:46:04,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 61. [2023-02-15 21:46:04,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 50 states have (on average 1.44) internal successors, (72), 60 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) [2023-02-15 21:46:04,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2023-02-15 21:46:04,482 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 13 [2023-02-15 21:46:04,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:04,482 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2023-02-15 21:46:04,482 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) [2023-02-15 21:46:04,482 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2023-02-15 21:46:04,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 21:46:04,483 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:04,483 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:46:04,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:04,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:04,689 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:04,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:04,690 INFO L85 PathProgramCache]: Analyzing trace with hash -862198757, now seen corresponding path program 1 times [2023-02-15 21:46:04,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:04,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312434933] [2023-02-15 21:46:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:04,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:04,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:04,691 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:04,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-15 21:46:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:04,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 21:46:04,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:04,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:46:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:04,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:04,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312434933] [2023-02-15 21:46:04,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312434933] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:46:04,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:46:04,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-15 21:46:04,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023340162] [2023-02-15 21:46:04,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:46:04,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 21:46:04,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:04,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 21:46:04,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-15 21:46:04,855 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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) [2023-02-15 21:46:04,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:04,913 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2023-02-15 21:46:04,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 21:46:04,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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 17 [2023-02-15 21:46:04,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:04,914 INFO L225 Difference]: With dead ends: 115 [2023-02-15 21:46:04,914 INFO L226 Difference]: Without dead ends: 115 [2023-02-15 21:46:04,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-15 21:46:04,915 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 130 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:04,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 189 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:46:04,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-02-15 21:46:04,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 92. [2023-02-15 21:46:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 81 states have (on average 1.3333333333333333) internal successors, (108), 91 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2023-02-15 21:46:04,919 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 17 [2023-02-15 21:46:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:04,919 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2023-02-15 21:46:04,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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) [2023-02-15 21:46:04,919 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2023-02-15 21:46:04,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 21:46:04,920 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:04,920 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:46:04,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:05,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:05,132 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:05,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:05,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1873316007, now seen corresponding path program 1 times [2023-02-15 21:46:05,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:05,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896188666] [2023-02-15 21:46:05,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:05,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:05,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:05,133 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:05,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-15 21:46:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:05,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 21:46:05,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:05,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:05,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:05,240 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-02-15 21:46:05,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2023-02-15 21:46:05,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-02-15 21:46:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:05,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:46:05,724 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 21:46:05,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:05,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:05,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896188666] [2023-02-15 21:46:05,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896188666] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:46:05,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:46:05,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-02-15 21:46:05,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935845215] [2023-02-15 21:46:05,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:46:05,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 21:46:05,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:05,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 21:46:05,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-02-15 21:46:05,752 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 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) [2023-02-15 21:46:06,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:06,548 INFO L93 Difference]: Finished difference Result 126 states and 148 transitions. [2023-02-15 21:46:06,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 21:46:06,548 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 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 17 [2023-02-15 21:46:06,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:06,549 INFO L225 Difference]: With dead ends: 126 [2023-02-15 21:46:06,549 INFO L226 Difference]: Without dead ends: 126 [2023-02-15 21:46:06,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2023-02-15 21:46:06,550 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 299 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:06,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 126 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 21:46:06,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-02-15 21:46:06,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 104. [2023-02-15 21:46:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 93 states have (on average 1.3225806451612903) internal successors, (123), 103 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) [2023-02-15 21:46:06,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2023-02-15 21:46:06,553 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 17 [2023-02-15 21:46:06,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:06,553 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2023-02-15 21:46:06,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 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) [2023-02-15 21:46:06,553 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2023-02-15 21:46:06,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 21:46:06,554 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:06,554 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] [2023-02-15 21:46:06,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:06,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:06,761 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:06,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:06,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1860319208, now seen corresponding path program 1 times [2023-02-15 21:46:06,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:06,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862836907] [2023-02-15 21:46:06,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:06,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:06,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:06,762 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:06,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-02-15 21:46:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:06,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 21:46:06,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 21:46:06,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:46:06,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:06,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862836907] [2023-02-15 21:46:06,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862836907] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:46:06,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:46:06,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 21:46:06,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644037085] [2023-02-15 21:46:06,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:46:06,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 21:46:06,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:06,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 21:46:06,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 21:46:06,845 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2023-02-15 21:46:06,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:06,923 INFO L93 Difference]: Finished difference Result 170 states and 199 transitions. [2023-02-15 21:46:06,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 21:46:06,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20 [2023-02-15 21:46:06,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:06,924 INFO L225 Difference]: With dead ends: 170 [2023-02-15 21:46:06,925 INFO L226 Difference]: Without dead ends: 170 [2023-02-15 21:46:06,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 21:46:06,925 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 68 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:06,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 127 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:46:06,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-02-15 21:46:06,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 131. [2023-02-15 21:46:06,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 120 states have (on average 1.2916666666666667) internal successors, (155), 130 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:06,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 155 transitions. [2023-02-15 21:46:06,928 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 155 transitions. Word has length 20 [2023-02-15 21:46:06,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:06,929 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 155 transitions. [2023-02-15 21:46:06,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2023-02-15 21:46:06,929 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 155 transitions. [2023-02-15 21:46:06,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 21:46:06,933 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:06,933 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] [2023-02-15 21:46:06,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:07,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:07,134 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:07,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:07,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1860318342, now seen corresponding path program 1 times [2023-02-15 21:46:07,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:07,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686532379] [2023-02-15 21:46:07,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:07,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:07,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:07,135 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:07,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-02-15 21:46:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:07,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 21:46:07,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:07,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:07,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:46:07,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:07,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686532379] [2023-02-15 21:46:07,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686532379] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:46:07,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:46:07,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 21:46:07,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843869500] [2023-02-15 21:46:07,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:46:07,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 21:46:07,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:07,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 21:46:07,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 21:46:07,235 INFO L87 Difference]: Start difference. First operand 131 states and 155 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 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) [2023-02-15 21:46:07,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:07,285 INFO L93 Difference]: Finished difference Result 129 states and 153 transitions. [2023-02-15 21:46:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 21:46:07,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 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 20 [2023-02-15 21:46:07,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:07,286 INFO L225 Difference]: With dead ends: 129 [2023-02-15 21:46:07,286 INFO L226 Difference]: Without dead ends: 129 [2023-02-15 21:46:07,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 21:46:07,287 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 42 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:07,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 48 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 21:46:07,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-15 21:46:07,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-02-15 21:46:07,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 120 states have (on average 1.275) internal successors, (153), 128 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:07,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2023-02-15 21:46:07,290 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 20 [2023-02-15 21:46:07,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:07,290 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2023-02-15 21:46:07,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 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) [2023-02-15 21:46:07,290 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2023-02-15 21:46:07,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 21:46:07,291 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:07,291 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] [2023-02-15 21:46:07,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:07,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:07,498 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:07,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1860318341, now seen corresponding path program 1 times [2023-02-15 21:46:07,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:07,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369909103] [2023-02-15 21:46:07,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:07,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:07,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:07,500 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:07,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-02-15 21:46:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:07,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 21:46:07,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:07,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:46:07,749 INFO L350 Elim1Store]: Elim1 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 [2023-02-15 21:46:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:07,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:07,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369909103] [2023-02-15 21:46:07,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369909103] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:46:07,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:46:07,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-02-15 21:46:07,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826802676] [2023-02-15 21:46:07,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:46:07,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 21:46:07,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:07,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 21:46:07,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-02-15 21:46:07,799 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) 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) [2023-02-15 21:46:08,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:08,230 INFO L93 Difference]: Finished difference Result 219 states and 260 transitions. [2023-02-15 21:46:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 21:46:08,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) 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 20 [2023-02-15 21:46:08,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:08,231 INFO L225 Difference]: With dead ends: 219 [2023-02-15 21:46:08,231 INFO L226 Difference]: Without dead ends: 219 [2023-02-15 21:46:08,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-02-15 21:46:08,232 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 298 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:08,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 117 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 21:46:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-02-15 21:46:08,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 134. [2023-02-15 21:46:08,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 125 states have (on average 1.288) internal successors, (161), 133 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:08,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 161 transitions. [2023-02-15 21:46:08,235 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 161 transitions. Word has length 20 [2023-02-15 21:46:08,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:08,235 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 161 transitions. [2023-02-15 21:46:08,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) 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) [2023-02-15 21:46:08,235 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 161 transitions. [2023-02-15 21:46:08,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 21:46:08,236 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:08,236 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] [2023-02-15 21:46:08,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:08,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:08,436 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:08,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:08,437 INFO L85 PathProgramCache]: Analyzing trace with hash 440503382, now seen corresponding path program 1 times [2023-02-15 21:46:08,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:08,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736653014] [2023-02-15 21:46:08,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:08,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:08,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:08,438 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:08,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-02-15 21:46:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:08,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 21:46:08,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:08,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:46:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:08,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:08,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736653014] [2023-02-15 21:46:08,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736653014] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:46:08,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:46:08,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-02-15 21:46:08,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96364496] [2023-02-15 21:46:08,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:46:08,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 21:46:08,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:08,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 21:46:08,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-02-15 21:46:08,644 INFO L87 Difference]: Start difference. First operand 134 states and 161 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2023-02-15 21:46:08,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:08,826 INFO L93 Difference]: Finished difference Result 198 states and 236 transitions. [2023-02-15 21:46:08,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 21:46:08,827 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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 20 [2023-02-15 21:46:08,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:08,827 INFO L225 Difference]: With dead ends: 198 [2023-02-15 21:46:08,827 INFO L226 Difference]: Without dead ends: 198 [2023-02-15 21:46:08,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-02-15 21:46:08,828 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 260 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:08,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 163 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:46:08,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-02-15 21:46:08,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 107. [2023-02-15 21:46:08,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 106 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:08,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2023-02-15 21:46:08,830 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 20 [2023-02-15 21:46:08,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:08,831 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2023-02-15 21:46:08,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2023-02-15 21:46:08,831 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2023-02-15 21:46:08,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 21:46:08,831 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:08,832 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] [2023-02-15 21:46:08,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:09,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:09,039 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:09,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:09,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1835293711, now seen corresponding path program 1 times [2023-02-15 21:46:09,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:09,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686636818] [2023-02-15 21:46:09,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:09,039 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:09,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:09,040 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:09,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-02-15 21:46:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:09,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 21:46:09,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:09,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:09,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:46:09,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:09,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686636818] [2023-02-15 21:46:09,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686636818] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:46:09,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:46:09,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 21:46:09,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995279365] [2023-02-15 21:46:09,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:46:09,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 21:46:09,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:09,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 21:46:09,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 21:46:09,126 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:09,165 INFO L93 Difference]: Finished difference Result 106 states and 127 transitions. [2023-02-15 21:46:09,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 21:46:09,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 [2023-02-15 21:46:09,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:09,166 INFO L225 Difference]: With dead ends: 106 [2023-02-15 21:46:09,166 INFO L226 Difference]: Without dead ends: 106 [2023-02-15 21:46:09,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 21:46:09,167 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 45 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:09,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 49 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 21:46:09,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-15 21:46:09,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-02-15 21:46:09,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 98 states have (on average 1.2959183673469388) internal successors, (127), 105 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:09,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2023-02-15 21:46:09,169 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 21 [2023-02-15 21:46:09,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:09,169 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2023-02-15 21:46:09,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:09,169 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2023-02-15 21:46:09,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 21:46:09,169 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:09,169 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] [2023-02-15 21:46:09,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:09,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:09,370 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:09,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:09,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1835293710, now seen corresponding path program 1 times [2023-02-15 21:46:09,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:09,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606888744] [2023-02-15 21:46:09,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:09,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:09,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:09,371 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:09,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-02-15 21:46:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:09,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 21:46:09,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:09,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:46:09,637 INFO L350 Elim1Store]: Elim1 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 [2023-02-15 21:46:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:09,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:09,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606888744] [2023-02-15 21:46:09,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606888744] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:46:09,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:46:09,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-02-15 21:46:09,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239148133] [2023-02-15 21:46:09,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:46:09,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 21:46:09,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:09,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 21:46:09,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-15 21:46:09,735 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) 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) [2023-02-15 21:46:10,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:10,276 INFO L93 Difference]: Finished difference Result 188 states and 224 transitions. [2023-02-15 21:46:10,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 21:46:10,285 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) 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 21 [2023-02-15 21:46:10,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:10,286 INFO L225 Difference]: With dead ends: 188 [2023-02-15 21:46:10,286 INFO L226 Difference]: Without dead ends: 188 [2023-02-15 21:46:10,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2023-02-15 21:46:10,286 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 455 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:10,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 128 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 21:46:10,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-02-15 21:46:10,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 109. [2023-02-15 21:46:10,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 101 states have (on average 1.297029702970297) internal successors, (131), 108 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2023-02-15 21:46:10,289 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 21 [2023-02-15 21:46:10,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:10,290 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2023-02-15 21:46:10,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) 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) [2023-02-15 21:46:10,290 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2023-02-15 21:46:10,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 21:46:10,292 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:10,292 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] [2023-02-15 21:46:10,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:10,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:10,497 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:10,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:10,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1059572912, now seen corresponding path program 1 times [2023-02-15 21:46:10,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:10,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449246432] [2023-02-15 21:46:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:10,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:10,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:10,499 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:10,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-02-15 21:46:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:10,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 21:46:10,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 21:46:10,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:46:10,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:10,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449246432] [2023-02-15 21:46:10,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449246432] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:46:10,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:46:10,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 21:46:10,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796012717] [2023-02-15 21:46:10,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:46:10,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 21:46:10,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:10,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 21:46:10,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 21:46:10,603 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:10,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:10,667 INFO L93 Difference]: Finished difference Result 138 states and 164 transitions. [2023-02-15 21:46:10,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 21:46:10,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-02-15 21:46:10,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:10,669 INFO L225 Difference]: With dead ends: 138 [2023-02-15 21:46:10,669 INFO L226 Difference]: Without dead ends: 138 [2023-02-15 21:46:10,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 21:46:10,670 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 51 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:10,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 157 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:46:10,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-02-15 21:46:10,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 127. [2023-02-15 21:46:10,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 119 states have (on average 1.3277310924369747) internal successors, (158), 126 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:10,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 158 transitions. [2023-02-15 21:46:10,673 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 158 transitions. Word has length 22 [2023-02-15 21:46:10,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:10,674 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 158 transitions. [2023-02-15 21:46:10,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:10,675 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 158 transitions. [2023-02-15 21:46:10,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 21:46:10,675 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:10,675 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] [2023-02-15 21:46:10,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:10,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:10,882 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:10,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:10,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1546450642, now seen corresponding path program 1 times [2023-02-15 21:46:10,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:10,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779294989] [2023-02-15 21:46:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:10,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:10,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:10,884 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:10,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-02-15 21:46:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:10,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 21:46:10,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:10,975 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-02-15 21:46:10,975 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 12 treesize of output 33 [2023-02-15 21:46:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 21:46:11,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:46:11,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:11,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779294989] [2023-02-15 21:46:11,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779294989] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:46:11,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:46:11,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 21:46:11,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902156043] [2023-02-15 21:46:11,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:46:11,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 21:46:11,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:11,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 21:46:11,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 21:46:11,004 INFO L87 Difference]: Start difference. First operand 127 states and 158 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:11,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:11,041 INFO L93 Difference]: Finished difference Result 126 states and 156 transitions. [2023-02-15 21:46:11,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 21:46:11,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-02-15 21:46:11,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:11,041 INFO L225 Difference]: With dead ends: 126 [2023-02-15 21:46:11,041 INFO L226 Difference]: Without dead ends: 126 [2023-02-15 21:46:11,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 21:46:11,042 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 35 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:11,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 51 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 21:46:11,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-02-15 21:46:11,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-02-15 21:46:11,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 119 states have (on average 1.3109243697478992) internal successors, (156), 125 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:11,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 156 transitions. [2023-02-15 21:46:11,044 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 156 transitions. Word has length 22 [2023-02-15 21:46:11,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:11,045 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 156 transitions. [2023-02-15 21:46:11,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:11,045 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 156 transitions. [2023-02-15 21:46:11,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 21:46:11,045 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:11,045 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] [2023-02-15 21:46:11,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-02-15 21:46:11,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:11,252 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:11,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:11,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1546450643, now seen corresponding path program 1 times [2023-02-15 21:46:11,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:11,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361496588] [2023-02-15 21:46:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:11,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:11,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:11,254 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:11,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-02-15 21:46:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:11,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 21:46:11,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:11,360 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-02-15 21:46:11,360 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 12 treesize of output 27 [2023-02-15 21:46:11,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 21:46:11,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:46:11,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:11,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361496588] [2023-02-15 21:46:11,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361496588] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:46:11,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:46:11,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 21:46:11,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829760396] [2023-02-15 21:46:11,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:46:11,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 21:46:11,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:11,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 21:46:11,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 21:46:11,441 INFO L87 Difference]: Start difference. First operand 126 states and 156 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:11,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:11,596 INFO L93 Difference]: Finished difference Result 234 states and 295 transitions. [2023-02-15 21:46:11,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 21:46:11,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-02-15 21:46:11,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:11,598 INFO L225 Difference]: With dead ends: 234 [2023-02-15 21:46:11,598 INFO L226 Difference]: Without dead ends: 234 [2023-02-15 21:46:11,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-15 21:46:11,598 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 109 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:11,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 121 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:46:11,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-02-15 21:46:11,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 186. [2023-02-15 21:46:11,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 179 states have (on average 1.329608938547486) internal successors, (238), 185 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:11,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 238 transitions. [2023-02-15 21:46:11,601 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 238 transitions. Word has length 22 [2023-02-15 21:46:11,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:11,602 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 238 transitions. [2023-02-15 21:46:11,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:11,602 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 238 transitions. [2023-02-15 21:46:11,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 21:46:11,602 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:11,602 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] [2023-02-15 21:46:11,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:11,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:11,811 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:11,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:11,812 INFO L85 PathProgramCache]: Analyzing trace with hash 728802193, now seen corresponding path program 1 times [2023-02-15 21:46:11,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:11,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751852963] [2023-02-15 21:46:11,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:11,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:11,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:11,813 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:11,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-02-15 21:46:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:11,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 21:46:11,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:11,935 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-02-15 21:46:11,935 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-02-15 21:46:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 21:46:12,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:46:12,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:12,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751852963] [2023-02-15 21:46:12,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751852963] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:46:12,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:46:12,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 21:46:12,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826786413] [2023-02-15 21:46:12,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:46:12,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 21:46:12,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:12,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 21:46:12,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 21:46:12,109 INFO L87 Difference]: Start difference. First operand 186 states and 238 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:12,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:12,249 INFO L93 Difference]: Finished difference Result 224 states and 289 transitions. [2023-02-15 21:46:12,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 21:46:12,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-02-15 21:46:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:12,250 INFO L225 Difference]: With dead ends: 224 [2023-02-15 21:46:12,250 INFO L226 Difference]: Without dead ends: 224 [2023-02-15 21:46:12,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-15 21:46:12,251 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 111 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:12,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 54 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:46:12,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-02-15 21:46:12,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 156. [2023-02-15 21:46:12,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 149 states have (on average 1.3624161073825503) 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) [2023-02-15 21:46:12,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 203 transitions. [2023-02-15 21:46:12,254 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 203 transitions. Word has length 22 [2023-02-15 21:46:12,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:12,254 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 203 transitions. [2023-02-15 21:46:12,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:12,254 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 203 transitions. [2023-02-15 21:46:12,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 21:46:12,255 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:12,255 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-15 21:46:12,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:12,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:12,462 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:12,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:12,462 INFO L85 PathProgramCache]: Analyzing trace with hash -591263241, now seen corresponding path program 2 times [2023-02-15 21:46:12,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:12,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519373260] [2023-02-15 21:46:12,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 21:46:12,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:12,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:12,464 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:12,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-02-15 21:46:12,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 21:46:12,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:46:12,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-15 21:46:12,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:12,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:12,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:12,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:12,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2023-02-15 21:46:12,583 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-02-15 21:46:12,584 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 19 [2023-02-15 21:46:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 21:46:12,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:46:13,680 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 21:46:13,681 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 21:46:13,743 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 21:46:13,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:13,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519373260] [2023-02-15 21:46:13,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519373260] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:46:13,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:46:13,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-15 21:46:13,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658962117] [2023-02-15 21:46:13,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:46:13,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 21:46:13,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:13,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 21:46:13,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-02-15 21:46:13,744 INFO L87 Difference]: Start difference. First operand 156 states and 203 transitions. Second operand has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 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) [2023-02-15 21:46:17,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:17,440 INFO L93 Difference]: Finished difference Result 1004 states and 1343 transitions. [2023-02-15 21:46:17,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 21:46:17,441 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 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 23 [2023-02-15 21:46:17,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:17,443 INFO L225 Difference]: With dead ends: 1004 [2023-02-15 21:46:17,443 INFO L226 Difference]: Without dead ends: 1004 [2023-02-15 21:46:17,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2023-02-15 21:46:17,444 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1290 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:17,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 559 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-02-15 21:46:17,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-02-15 21:46:17,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 204. [2023-02-15 21:46:17,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 197 states have (on average 1.3350253807106598) internal successors, (263), 203 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:17,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 263 transitions. [2023-02-15 21:46:17,452 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 263 transitions. Word has length 23 [2023-02-15 21:46:17,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:17,453 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 263 transitions. [2023-02-15 21:46:17,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 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) [2023-02-15 21:46:17,453 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 263 transitions. [2023-02-15 21:46:17,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 21:46:17,453 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:17,453 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] [2023-02-15 21:46:17,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:17,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:17,660 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:17,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:17,660 INFO L85 PathProgramCache]: Analyzing trace with hash 88962737, now seen corresponding path program 1 times [2023-02-15 21:46:17,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:17,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498938602] [2023-02-15 21:46:17,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:17,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:17,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:17,662 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:17,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-02-15 21:46:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:17,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 21:46:17,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:17,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 21:46:17,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:46:17,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:17,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498938602] [2023-02-15 21:46:17,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498938602] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:46:17,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:46:17,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 21:46:17,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730861442] [2023-02-15 21:46:17,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:46:17,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 21:46:17,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:17,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 21:46:17,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 21:46:17,734 INFO L87 Difference]: Start difference. First operand 204 states and 263 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) [2023-02-15 21:46:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:17,745 INFO L93 Difference]: Finished difference Result 216 states and 275 transitions. [2023-02-15 21:46:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 21:46:17,745 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 24 [2023-02-15 21:46:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:17,746 INFO L225 Difference]: With dead ends: 216 [2023-02-15 21:46:17,746 INFO L226 Difference]: Without dead ends: 216 [2023-02-15 21:46:17,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 21:46:17,747 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:17,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 63 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 21:46:17,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-02-15 21:46:17,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 209. [2023-02-15 21:46:17,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 202 states have (on average 1.3217821782178218) internal successors, (267), 208 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:17,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 267 transitions. [2023-02-15 21:46:17,750 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 267 transitions. Word has length 24 [2023-02-15 21:46:17,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:17,750 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 267 transitions. [2023-02-15 21:46:17,750 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) [2023-02-15 21:46:17,750 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 267 transitions. [2023-02-15 21:46:17,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 21:46:17,751 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:17,751 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:46:17,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:17,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:17,952 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:17,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:17,952 INFO L85 PathProgramCache]: Analyzing trace with hash -747793046, now seen corresponding path program 1 times [2023-02-15 21:46:17,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:17,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089332981] [2023-02-15 21:46:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:17,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:17,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:17,953 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:17,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-02-15 21:46:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:18,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 21:46:18,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 21:46:18,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:46:18,130 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 21:46:18,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:18,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089332981] [2023-02-15 21:46:18,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089332981] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:46:18,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:46:18,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-02-15 21:46:18,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354411107] [2023-02-15 21:46:18,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:46:18,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 21:46:18,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:18,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 21:46:18,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-02-15 21:46:18,131 INFO L87 Difference]: Start difference. First operand 209 states and 267 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:18,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:18,222 INFO L93 Difference]: Finished difference Result 222 states and 272 transitions. [2023-02-15 21:46:18,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 21:46:18,222 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 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 25 [2023-02-15 21:46:18,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:18,223 INFO L225 Difference]: With dead ends: 222 [2023-02-15 21:46:18,223 INFO L226 Difference]: Without dead ends: 222 [2023-02-15 21:46:18,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-02-15 21:46:18,225 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 96 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:18,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 274 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:46:18,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-02-15 21:46:18,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 205. [2023-02-15 21:46:18,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 198 states have (on average 1.3080808080808082) internal successors, (259), 204 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 259 transitions. [2023-02-15 21:46:18,229 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 259 transitions. Word has length 25 [2023-02-15 21:46:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:18,229 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 259 transitions. [2023-02-15 21:46:18,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:18,229 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 259 transitions. [2023-02-15 21:46:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 21:46:18,230 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:18,230 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:46:18,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-02-15 21:46:18,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:18,437 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:18,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:18,437 INFO L85 PathProgramCache]: Analyzing trace with hash -528938328, now seen corresponding path program 1 times [2023-02-15 21:46:18,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:18,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855075022] [2023-02-15 21:46:18,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:18,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:18,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:18,439 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:18,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-02-15 21:46:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:18,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 21:46:18,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:18,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:46:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:18,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:18,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855075022] [2023-02-15 21:46:18,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855075022] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:46:18,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:46:18,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2023-02-15 21:46:18,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877908257] [2023-02-15 21:46:18,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:46:18,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 21:46:18,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:18,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 21:46:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-02-15 21:46:18,727 INFO L87 Difference]: Start difference. First operand 205 states and 259 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:18,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:18,975 INFO L93 Difference]: Finished difference Result 265 states and 332 transitions. [2023-02-15 21:46:18,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 21:46:18,976 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 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 25 [2023-02-15 21:46:18,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:18,976 INFO L225 Difference]: With dead ends: 265 [2023-02-15 21:46:18,976 INFO L226 Difference]: Without dead ends: 265 [2023-02-15 21:46:18,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2023-02-15 21:46:18,977 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 149 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:18,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 335 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:46:18,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-02-15 21:46:18,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 239. [2023-02-15 21:46:18,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 232 states have (on average 1.331896551724138) internal successors, (309), 238 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:18,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 309 transitions. [2023-02-15 21:46:18,980 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 309 transitions. Word has length 25 [2023-02-15 21:46:18,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:18,980 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 309 transitions. [2023-02-15 21:46:18,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 309 transitions. [2023-02-15 21:46:18,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 21:46:18,981 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:18,981 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] [2023-02-15 21:46:19,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:19,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:19,185 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:19,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:19,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1854162937, now seen corresponding path program 1 times [2023-02-15 21:46:19,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:19,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415646569] [2023-02-15 21:46:19,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:19,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:19,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:19,187 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:19,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-02-15 21:46:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:19,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 21:46:19,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:19,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:19,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:46:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:19,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:19,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415646569] [2023-02-15 21:46:19,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415646569] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:46:19,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:46:19,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-02-15 21:46:19,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731882465] [2023-02-15 21:46:19,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:46:19,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 21:46:19,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:19,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 21:46:19,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-02-15 21:46:19,446 INFO L87 Difference]: Start difference. First operand 239 states and 309 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:19,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:19,660 INFO L93 Difference]: Finished difference Result 246 states and 307 transitions. [2023-02-15 21:46:19,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 21:46:19,660 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 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 [2023-02-15 21:46:19,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:19,661 INFO L225 Difference]: With dead ends: 246 [2023-02-15 21:46:19,661 INFO L226 Difference]: Without dead ends: 246 [2023-02-15 21:46:19,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2023-02-15 21:46:19,662 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 197 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:19,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 161 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:46:19,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-02-15 21:46:19,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 200. [2023-02-15 21:46:19,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 194 states have (on average 1.288659793814433) internal successors, (250), 199 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:19,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 250 transitions. [2023-02-15 21:46:19,665 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 250 transitions. Word has length 27 [2023-02-15 21:46:19,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:19,665 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 250 transitions. [2023-02-15 21:46:19,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 250 transitions. [2023-02-15 21:46:19,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 21:46:19,666 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:19,666 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] [2023-02-15 21:46:19,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-02-15 21:46:19,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:19,873 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:19,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:19,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1314778955, now seen corresponding path program 1 times [2023-02-15 21:46:19,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:19,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362987378] [2023-02-15 21:46:19,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:19,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:19,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:19,875 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:19,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-02-15 21:46:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:19,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 21:46:19,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:22,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 21:46:22,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:46:22,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:22,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362987378] [2023-02-15 21:46:22,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362987378] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:46:22,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:46:22,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 21:46:22,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820731195] [2023-02-15 21:46:22,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:46:22,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 21:46:22,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:22,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 21:46:22,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2023-02-15 21:46:22,240 INFO L87 Difference]: Start difference. First operand 200 states and 250 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 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) [2023-02-15 21:46:24,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 21:46:26,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 21:46:28,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 21:46:30,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 21:46:32,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 21:46:32,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:32,401 INFO L93 Difference]: Finished difference Result 240 states and 298 transitions. [2023-02-15 21:46:32,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 21:46:32,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 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 [2023-02-15 21:46:32,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:32,402 INFO L225 Difference]: With dead ends: 240 [2023-02-15 21:46:32,402 INFO L226 Difference]: Without dead ends: 238 [2023-02-15 21:46:32,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2023-02-15 21:46:32,403 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:32,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 113 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 7 Unknown, 0 Unchecked, 10.2s Time] [2023-02-15 21:46:32,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-02-15 21:46:32,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2023-02-15 21:46:32,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 230 states have (on average 1.2826086956521738) internal successors, (295), 235 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:32,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 295 transitions. [2023-02-15 21:46:32,405 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 295 transitions. Word has length 28 [2023-02-15 21:46:32,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:32,406 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 295 transitions. [2023-02-15 21:46:32,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 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) [2023-02-15 21:46:32,406 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 295 transitions. [2023-02-15 21:46:32,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 21:46:32,406 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:32,406 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-02-15 21:46:32,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:32,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:32,615 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:32,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:32,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1314778088, now seen corresponding path program 1 times [2023-02-15 21:46:32,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:32,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80992] [2023-02-15 21:46:32,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:32,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:32,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:32,617 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:32,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-02-15 21:46:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:32,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 21:46:32,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 21:46:32,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:46:32,806 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 21:46:32,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:32,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80992] [2023-02-15 21:46:32,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80992] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:46:32,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:46:32,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-15 21:46:32,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758607859] [2023-02-15 21:46:32,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:46:32,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 21:46:32,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:32,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 21:46:32,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-15 21:46:32,807 INFO L87 Difference]: Start difference. First operand 236 states and 295 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:32,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:32,900 INFO L93 Difference]: Finished difference Result 283 states and 344 transitions. [2023-02-15 21:46:32,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 21:46:32,901 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2023-02-15 21:46:32,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:32,902 INFO L225 Difference]: With dead ends: 283 [2023-02-15 21:46:32,902 INFO L226 Difference]: Without dead ends: 254 [2023-02-15 21:46:32,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-15 21:46:32,902 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 31 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:32,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 215 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:46:32,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-02-15 21:46:32,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 238. [2023-02-15 21:46:32,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 232 states have (on average 1.2887931034482758) internal successors, (299), 237 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:32,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 299 transitions. [2023-02-15 21:46:32,905 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 299 transitions. Word has length 28 [2023-02-15 21:46:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:32,905 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 299 transitions. [2023-02-15 21:46:32,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:32,906 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 299 transitions. [2023-02-15 21:46:32,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 21:46:32,906 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:32,906 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] [2023-02-15 21:46:32,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:33,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:33,106 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:33,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:33,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1174230345, now seen corresponding path program 1 times [2023-02-15 21:46:33,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:33,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345951909] [2023-02-15 21:46:33,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:33,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:33,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:33,108 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:33,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-02-15 21:46:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:33,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 21:46:33,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 21:46:35,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:46:35,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:35,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345951909] [2023-02-15 21:46:35,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345951909] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:46:35,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:46:35,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 21:46:35,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970120074] [2023-02-15 21:46:35,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:46:35,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 21:46:35,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:35,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 21:46:35,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2023-02-15 21:46:35,437 INFO L87 Difference]: Start difference. First operand 238 states and 299 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 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) [2023-02-15 21:46:37,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 21:46:39,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 21:46:41,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 21:46:43,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 21:46:45,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 21:46:45,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:45,517 INFO L93 Difference]: Finished difference Result 237 states and 298 transitions. [2023-02-15 21:46:45,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 21:46:45,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 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 [2023-02-15 21:46:45,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:45,519 INFO L225 Difference]: With dead ends: 237 [2023-02-15 21:46:45,519 INFO L226 Difference]: Without dead ends: 220 [2023-02-15 21:46:45,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2023-02-15 21:46:45,519 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 12 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:45,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 60 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 5 Unknown, 0 Unchecked, 10.1s Time] [2023-02-15 21:46:45,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-02-15 21:46:45,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2023-02-15 21:46:45,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 214 states have (on average 1.266355140186916) internal successors, (271), 218 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:45,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 271 transitions. [2023-02-15 21:46:45,522 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 271 transitions. Word has length 28 [2023-02-15 21:46:45,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:45,522 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 271 transitions. [2023-02-15 21:46:45,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 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) [2023-02-15 21:46:45,523 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 271 transitions. [2023-02-15 21:46:45,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 21:46:45,523 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:45,523 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-02-15 21:46:45,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:45,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:45,731 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:45,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:45,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1252738474, now seen corresponding path program 1 times [2023-02-15 21:46:45,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:45,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491582592] [2023-02-15 21:46:45,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:46:45,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:45,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:45,733 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:45,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-02-15 21:46:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:46:45,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 21:46:45,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:45,926 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 21:46:45,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:46:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 21:46:46,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:46,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491582592] [2023-02-15 21:46:46,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491582592] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:46:46,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:46:46,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-02-15 21:46:46,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755651832] [2023-02-15 21:46:46,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:46:46,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 21:46:46,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:46,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 21:46:46,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-02-15 21:46:46,035 INFO L87 Difference]: Start difference. First operand 219 states and 271 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:46,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:46,261 INFO L93 Difference]: Finished difference Result 282 states and 341 transitions. [2023-02-15 21:46:46,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 21:46:46,262 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2023-02-15 21:46:46,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:46,262 INFO L225 Difference]: With dead ends: 282 [2023-02-15 21:46:46,262 INFO L226 Difference]: Without dead ends: 250 [2023-02-15 21:46:46,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-02-15 21:46:46,263 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 110 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:46,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 231 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:46:46,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-02-15 21:46:46,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 219. [2023-02-15 21:46:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 214 states have (on average 1.2616822429906542) internal successors, (270), 218 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) [2023-02-15 21:46:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 270 transitions. [2023-02-15 21:46:46,266 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 270 transitions. Word has length 28 [2023-02-15 21:46:46,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:46,266 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 270 transitions. [2023-02-15 21:46:46,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:46,266 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 270 transitions. [2023-02-15 21:46:46,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 21:46:46,266 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:46,266 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:46:46,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-02-15 21:46:46,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:46,473 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:46,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:46,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1138703979, now seen corresponding path program 2 times [2023-02-15 21:46:46,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:46,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932704917] [2023-02-15 21:46:46,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 21:46:46,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:46,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:46,475 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:46,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-02-15 21:46:46,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 21:46:46,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:46:46,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-15 21:46:46,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:46,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:46,609 INFO L321 Elim1Store]: treesize reduction 26, result has 31.6 percent of original size [2023-02-15 21:46:46,609 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 14 treesize of output 25 [2023-02-15 21:46:46,618 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 24 [2023-02-15 21:46:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:47,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:46:48,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:48,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:48,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932704917] [2023-02-15 21:46:48,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932704917] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:46:48,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:46:48,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-02-15 21:46:48,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624637445] [2023-02-15 21:46:48,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:46:48,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 21:46:48,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:48,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 21:46:48,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-02-15 21:46:48,039 INFO L87 Difference]: Start difference. First operand 219 states and 270 transitions. Second operand has 17 states, 16 states have (on average 3.4375) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:49,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:49,611 INFO L93 Difference]: Finished difference Result 299 states and 364 transitions. [2023-02-15 21:46:49,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 21:46:49,612 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.4375) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 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 29 [2023-02-15 21:46:49,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:49,613 INFO L225 Difference]: With dead ends: 299 [2023-02-15 21:46:49,613 INFO L226 Difference]: Without dead ends: 299 [2023-02-15 21:46:49,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2023-02-15 21:46:49,614 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 384 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:49,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 213 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 21:46:49,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-02-15 21:46:49,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 233. [2023-02-15 21:46:49,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 228 states have (on average 1.2763157894736843) internal successors, (291), 232 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:49,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 291 transitions. [2023-02-15 21:46:49,618 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 291 transitions. Word has length 29 [2023-02-15 21:46:49,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:49,618 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 291 transitions. [2023-02-15 21:46:49,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.4375) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:49,618 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 291 transitions. [2023-02-15 21:46:49,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 21:46:49,618 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:49,618 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:46:49,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:49,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:49,826 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:49,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:49,827 INFO L85 PathProgramCache]: Analyzing trace with hash 550362914, now seen corresponding path program 2 times [2023-02-15 21:46:49,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:49,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456176853] [2023-02-15 21:46:49,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 21:46:49,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:49,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:49,828 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:49,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-02-15 21:46:49,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 21:46:49,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:46:49,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-15 21:46:49,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:49,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:49,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:49,931 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-02-15 21:46:49,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2023-02-15 21:46:49,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-02-15 21:46:50,255 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:50,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:46:51,271 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 21:46:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:46:51,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:51,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456176853] [2023-02-15 21:46:51,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456176853] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:46:51,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:46:51,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-02-15 21:46:51,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625543178] [2023-02-15 21:46:51,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:46:51,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 21:46:51,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:51,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 21:46:51,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2023-02-15 21:46:51,334 INFO L87 Difference]: Start difference. First operand 233 states and 291 transitions. Second operand has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:57,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:57,423 INFO L93 Difference]: Finished difference Result 643 states and 825 transitions. [2023-02-15 21:46:57,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-15 21:46:57,424 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 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 29 [2023-02-15 21:46:57,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:57,425 INFO L225 Difference]: With dead ends: 643 [2023-02-15 21:46:57,426 INFO L226 Difference]: Without dead ends: 643 [2023-02-15 21:46:57,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=410, Invalid=780, Unknown=0, NotChecked=0, Total=1190 [2023-02-15 21:46:57,426 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 1034 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:57,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 389 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-02-15 21:46:57,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-02-15 21:46:57,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 281. [2023-02-15 21:46:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 276 states have (on average 1.2717391304347827) internal successors, (351), 280 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:57,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 351 transitions. [2023-02-15 21:46:57,431 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 351 transitions. Word has length 29 [2023-02-15 21:46:57,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:57,431 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 351 transitions. [2023-02-15 21:46:57,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:57,432 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 351 transitions. [2023-02-15 21:46:57,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 21:46:57,432 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:57,432 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-02-15 21:46:57,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-02-15 21:46:57,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:57,639 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:57,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:57,639 INFO L85 PathProgramCache]: Analyzing trace with hash -112944909, now seen corresponding path program 2 times [2023-02-15 21:46:57,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:57,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675528129] [2023-02-15 21:46:57,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 21:46:57,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:57,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:57,641 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:57,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-02-15 21:46:57,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 21:46:57,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:46:57,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-15 21:46:57,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:57,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:57,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:57,760 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 21:46:57,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2023-02-15 21:46:57,770 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-02-15 21:46:57,770 INFO L350 Elim1Store]: Elim1 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 90 treesize of output 89 [2023-02-15 21:46:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 21:46:58,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:46:58,768 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 21:46:58,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:46:58,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675528129] [2023-02-15 21:46:58,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675528129] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:46:58,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:46:58,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2023-02-15 21:46:58,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703397265] [2023-02-15 21:46:58,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:46:58,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 21:46:58,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:46:58,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 21:46:58,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-02-15 21:46:58,770 INFO L87 Difference]: Start difference. First operand 281 states and 351 transitions. Second operand has 13 states, 12 states have (on average 5.166666666666667) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:59,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:46:59,536 INFO L93 Difference]: Finished difference Result 387 states and 487 transitions. [2023-02-15 21:46:59,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 21:46:59,537 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.166666666666667) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 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 [2023-02-15 21:46:59,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:46:59,538 INFO L225 Difference]: With dead ends: 387 [2023-02-15 21:46:59,538 INFO L226 Difference]: Without dead ends: 387 [2023-02-15 21:46:59,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2023-02-15 21:46:59,538 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 289 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 21:46:59,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 199 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 21:46:59,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-02-15 21:46:59,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 320. [2023-02-15 21:46:59,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 315 states have (on average 1.273015873015873) internal successors, (401), 319 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:59,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 401 transitions. [2023-02-15 21:46:59,543 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 401 transitions. Word has length 32 [2023-02-15 21:46:59,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:46:59,543 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 401 transitions. [2023-02-15 21:46:59,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.166666666666667) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:46:59,543 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 401 transitions. [2023-02-15 21:46:59,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 21:46:59,544 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:46:59,544 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:46:59,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-02-15 21:46:59,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:59,751 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:46:59,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:46:59,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1409463453, now seen corresponding path program 3 times [2023-02-15 21:46:59,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:46:59,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487970115] [2023-02-15 21:46:59,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 21:46:59,752 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:46:59,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:46:59,753 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:46:59,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-02-15 21:46:59,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 21:46:59,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:46:59,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 21:46:59,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:46:59,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:59,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:46:59,911 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-02-15 21:46:59,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2023-02-15 21:46:59,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-02-15 21:47:00,264 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-15 21:47:00,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:47:01,177 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 21:47:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-15 21:47:01,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:47:01,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487970115] [2023-02-15 21:47:01,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487970115] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:47:01,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:47:01,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-15 21:47:01,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133234226] [2023-02-15 21:47:01,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:47:01,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 21:47:01,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:47:01,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 21:47:01,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-02-15 21:47:01,230 INFO L87 Difference]: Start difference. First operand 320 states and 401 transitions. Second operand has 18 states, 17 states have (on average 3.235294117647059) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:47:03,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:47:03,836 INFO L93 Difference]: Finished difference Result 638 states and 775 transitions. [2023-02-15 21:47:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-15 21:47:03,837 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.235294117647059) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 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 [2023-02-15 21:47:03,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:47:03,839 INFO L225 Difference]: With dead ends: 638 [2023-02-15 21:47:03,839 INFO L226 Difference]: Without dead ends: 638 [2023-02-15 21:47:03,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=302, Invalid=690, Unknown=0, NotChecked=0, Total=992 [2023-02-15 21:47:03,840 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 390 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-15 21:47:03,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 213 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-15 21:47:03,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2023-02-15 21:47:03,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 396. [2023-02-15 21:47:03,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 391 states have (on average 1.3222506393861893) internal successors, (517), 395 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:47:03,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 517 transitions. [2023-02-15 21:47:03,856 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 517 transitions. Word has length 33 [2023-02-15 21:47:03,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:47:03,856 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 517 transitions. [2023-02-15 21:47:03,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.235294117647059) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:47:03,856 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 517 transitions. [2023-02-15 21:47:03,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-15 21:47:03,857 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:47:03,857 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:47:03,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-02-15 21:47:04,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:47:04,065 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:47:04,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:47:04,065 INFO L85 PathProgramCache]: Analyzing trace with hash -524293744, now seen corresponding path program 3 times [2023-02-15 21:47:04,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:47:04,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523674376] [2023-02-15 21:47:04,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 21:47:04,065 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:47:04,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:47:04,066 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:47:04,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-02-15 21:47:04,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-15 21:47:04,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:47:04,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-15 21:47:04,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:47:04,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:47:04,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:47:04,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:47:04,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2023-02-15 21:47:04,292 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-02-15 21:47:04,292 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 19 [2023-02-15 21:47:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 21:47:04,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:47:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 21:47:06,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:47:06,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523674376] [2023-02-15 21:47:06,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523674376] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:47:06,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:47:06,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-02-15 21:47:06,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626897186] [2023-02-15 21:47:06,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:47:06,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-15 21:47:06,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:47:06,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-15 21:47:06,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2023-02-15 21:47:06,877 INFO L87 Difference]: Start difference. First operand 396 states and 517 transitions. Second operand has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 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) [2023-02-15 21:47:09,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:47:09,992 INFO L93 Difference]: Finished difference Result 733 states and 971 transitions. [2023-02-15 21:47:09,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 21:47:09,994 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 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 [2023-02-15 21:47:09,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:47:09,996 INFO L225 Difference]: With dead ends: 733 [2023-02-15 21:47:09,996 INFO L226 Difference]: Without dead ends: 707 [2023-02-15 21:47:09,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2023-02-15 21:47:09,996 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 353 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:47:09,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 356 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-15 21:47:09,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2023-02-15 21:47:10,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 643. [2023-02-15 21:47:10,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 638 states have (on average 1.3495297805642634) internal successors, (861), 642 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:47:10,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 861 transitions. [2023-02-15 21:47:10,003 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 861 transitions. Word has length 40 [2023-02-15 21:47:10,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:47:10,003 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 861 transitions. [2023-02-15 21:47:10,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 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) [2023-02-15 21:47:10,004 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 861 transitions. [2023-02-15 21:47:10,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-15 21:47:10,004 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:47:10,004 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] [2023-02-15 21:47:10,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-02-15 21:47:10,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:47:10,213 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:47:10,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:47:10,213 INFO L85 PathProgramCache]: Analyzing trace with hash 829184327, now seen corresponding path program 1 times [2023-02-15 21:47:10,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:47:10,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880621973] [2023-02-15 21:47:10,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:47:10,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:47:10,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:47:10,214 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:47:10,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-02-15 21:47:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:47:10,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 21:47:10,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:47:10,365 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-02-15 21:47:10,366 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-02-15 21:47:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 21:47:10,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:47:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 21:47:11,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:47:11,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880621973] [2023-02-15 21:47:11,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880621973] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:47:11,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:47:11,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-02-15 21:47:11,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696995337] [2023-02-15 21:47:11,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:47:11,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 21:47:11,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:47:11,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 21:47:11,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-02-15 21:47:11,293 INFO L87 Difference]: Start difference. First operand 643 states and 861 transitions. Second operand has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 14 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) [2023-02-15 21:47:12,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:47:12,027 INFO L93 Difference]: Finished difference Result 742 states and 983 transitions. [2023-02-15 21:47:12,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 21:47:12,028 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 14 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) Word has length 41 [2023-02-15 21:47:12,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:47:12,030 INFO L225 Difference]: With dead ends: 742 [2023-02-15 21:47:12,030 INFO L226 Difference]: Without dead ends: 713 [2023-02-15 21:47:12,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2023-02-15 21:47:12,030 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 227 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 21:47:12,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 237 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 21:47:12,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-02-15 21:47:12,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 647. [2023-02-15 21:47:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 642 states have (on average 1.35202492211838) internal successors, (868), 646 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:47:12,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 868 transitions. [2023-02-15 21:47:12,037 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 868 transitions. Word has length 41 [2023-02-15 21:47:12,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:47:12,037 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 868 transitions. [2023-02-15 21:47:12,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 14 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) [2023-02-15 21:47:12,038 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 868 transitions. [2023-02-15 21:47:12,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-15 21:47:12,038 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:47:12,039 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2023-02-15 21:47:12,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2023-02-15 21:47:12,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:47:12,246 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:47:12,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:47:12,246 INFO L85 PathProgramCache]: Analyzing trace with hash -523698423, now seen corresponding path program 3 times [2023-02-15 21:47:12,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:47:12,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328135697] [2023-02-15 21:47:12,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 21:47:12,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:47:12,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:47:12,248 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:47:12,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-02-15 21:47:12,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-15 21:47:12,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:47:12,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-15 21:47:12,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:47:12,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:47:12,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:47:12,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:47:12,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2023-02-15 21:47:12,492 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-02-15 21:47:12,492 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 19 [2023-02-15 21:47:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 21:47:13,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:47:15,573 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 21:47:15,573 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 21:47:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 21:47:15,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:47:15,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328135697] [2023-02-15 21:47:15,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328135697] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:47:15,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:47:15,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-02-15 21:47:15,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057233360] [2023-02-15 21:47:15,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:47:15,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-15 21:47:15,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:47:15,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-15 21:47:15,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=637, Unknown=0, NotChecked=0, Total=870 [2023-02-15 21:47:15,691 INFO L87 Difference]: Start difference. First operand 647 states and 868 transitions. Second operand has 30 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:47:37,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:47:37,161 INFO L93 Difference]: Finished difference Result 7849 states and 10851 transitions. [2023-02-15 21:47:37,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-02-15 21:47:37,162 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 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 47 [2023-02-15 21:47:37,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:47:37,178 INFO L225 Difference]: With dead ends: 7849 [2023-02-15 21:47:37,178 INFO L226 Difference]: Without dead ends: 7849 [2023-02-15 21:47:37,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=1166, Invalid=2494, Unknown=0, NotChecked=0, Total=3660 [2023-02-15 21:47:37,179 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 4380 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4380 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:47:37,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4380 Valid, 1841 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1770 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-02-15 21:47:37,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7849 states. [2023-02-15 21:47:37,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7849 to 743. [2023-02-15 21:47:37,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 738 states have (on average 1.3387533875338753) internal successors, (988), 742 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:47:37,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 988 transitions. [2023-02-15 21:47:37,212 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 988 transitions. Word has length 47 [2023-02-15 21:47:37,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:47:37,212 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 988 transitions. [2023-02-15 21:47:37,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:47:37,212 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 988 transitions. [2023-02-15 21:47:37,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-15 21:47:37,213 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:47:37,213 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:47:37,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-02-15 21:47:37,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:47:37,420 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:47:37,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:47:37,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1293342909, now seen corresponding path program 4 times [2023-02-15 21:47:37,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:47:37,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123027279] [2023-02-15 21:47:37,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 21:47:37,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:47:37,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:47:37,422 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:47:37,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-02-15 21:47:37,531 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 21:47:37,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:47:37,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 21:47:37,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:47:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 42 proven. 34 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 21:47:37,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:47:38,120 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 42 proven. 34 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 21:47:38,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:47:38,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123027279] [2023-02-15 21:47:38,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123027279] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:47:38,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:47:38,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2023-02-15 21:47:38,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940384942] [2023-02-15 21:47:38,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:47:38,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-15 21:47:38,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:47:38,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-15 21:47:38,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2023-02-15 21:47:38,122 INFO L87 Difference]: Start difference. First operand 743 states and 988 transitions. Second operand has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 23 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) [2023-02-15 21:47:39,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:47:39,563 INFO L93 Difference]: Finished difference Result 1536 states and 1940 transitions. [2023-02-15 21:47:39,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-15 21:47:39,564 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 23 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) Word has length 49 [2023-02-15 21:47:39,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:47:39,567 INFO L225 Difference]: With dead ends: 1536 [2023-02-15 21:47:39,567 INFO L226 Difference]: Without dead ends: 1400 [2023-02-15 21:47:39,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=478, Invalid=1502, Unknown=0, NotChecked=0, Total=1980 [2023-02-15 21:47:39,567 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 659 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 21:47:39,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 838 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 21:47:39,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-02-15 21:47:39,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1041. [2023-02-15 21:47:39,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1036 states have (on average 1.3474903474903475) internal successors, (1396), 1040 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:47:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1396 transitions. [2023-02-15 21:47:39,578 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1396 transitions. Word has length 49 [2023-02-15 21:47:39,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:47:39,578 INFO L495 AbstractCegarLoop]: Abstraction has 1041 states and 1396 transitions. [2023-02-15 21:47:39,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 23 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) [2023-02-15 21:47:39,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1396 transitions. [2023-02-15 21:47:39,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-15 21:47:39,579 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:47:39,579 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:47:39,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-02-15 21:47:39,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:47:39,787 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:47:39,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:47:39,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1022969014, now seen corresponding path program 4 times [2023-02-15 21:47:39,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:47:39,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228622345] [2023-02-15 21:47:39,788 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 21:47:39,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:47:39,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:47:39,789 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:47:39,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-02-15 21:47:39,904 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 21:47:39,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:47:39,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 21:47:39,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:47:40,172 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 21:47:40,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:47:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 21:47:40,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:47:40,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228622345] [2023-02-15 21:47:40,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228622345] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:47:40,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:47:40,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2023-02-15 21:47:40,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90857763] [2023-02-15 21:47:40,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:47:40,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-15 21:47:40,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:47:40,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-15 21:47:40,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2023-02-15 21:47:40,631 INFO L87 Difference]: Start difference. First operand 1041 states and 1396 transitions. Second operand has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:47:41,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:47:41,468 INFO L93 Difference]: Finished difference Result 1742 states and 2343 transitions. [2023-02-15 21:47:41,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-15 21:47:41,469 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 0 states have call successors, (0), 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 [2023-02-15 21:47:41,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:47:41,475 INFO L225 Difference]: With dead ends: 1742 [2023-02-15 21:47:41,476 INFO L226 Difference]: Without dead ends: 1531 [2023-02-15 21:47:41,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=299, Invalid=1107, Unknown=0, NotChecked=0, Total=1406 [2023-02-15 21:47:41,476 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 464 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 21:47:41,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 922 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 21:47:41,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2023-02-15 21:47:41,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1334. [2023-02-15 21:47:41,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1329 states have (on average 1.346877351392024) internal successors, (1790), 1333 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:47:41,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1790 transitions. [2023-02-15 21:47:41,488 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1790 transitions. Word has length 52 [2023-02-15 21:47:41,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:47:41,488 INFO L495 AbstractCegarLoop]: Abstraction has 1334 states and 1790 transitions. [2023-02-15 21:47:41,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:47:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1790 transitions. [2023-02-15 21:47:41,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-02-15 21:47:41,490 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:47:41,490 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:47:41,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-02-15 21:47:41,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:47:41,698 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:47:41,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:47:41,699 INFO L85 PathProgramCache]: Analyzing trace with hash -199246284, now seen corresponding path program 3 times [2023-02-15 21:47:41,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:47:41,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897541947] [2023-02-15 21:47:41,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 21:47:41,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:47:41,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:47:41,700 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:47:41,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-02-15 21:47:41,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-15 21:47:41,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:47:41,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-15 21:47:41,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:47:41,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:47:41,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:47:41,978 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-02-15 21:47:41,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2023-02-15 21:47:41,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-02-15 21:47:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:47:42,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:47:45,304 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 21:47:45,427 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:47:45,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:47:45,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897541947] [2023-02-15 21:47:45,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897541947] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:47:45,428 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:47:45,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-02-15 21:47:45,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785126719] [2023-02-15 21:47:45,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:47:45,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-15 21:47:45,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:47:45,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-15 21:47:45,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=727, Unknown=0, NotChecked=0, Total=992 [2023-02-15 21:47:45,429 INFO L87 Difference]: Start difference. First operand 1334 states and 1790 transitions. Second operand has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 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) [2023-02-15 21:48:51,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:48:51,832 INFO L93 Difference]: Finished difference Result 8377 states and 12009 transitions. [2023-02-15 21:48:51,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-02-15 21:48:51,834 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 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) Word has length 53 [2023-02-15 21:48:51,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:48:51,852 INFO L225 Difference]: With dead ends: 8377 [2023-02-15 21:48:51,852 INFO L226 Difference]: Without dead ends: 8377 [2023-02-15 21:48:51,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 64.7s TimeCoverageRelationStatistics Valid=1365, Invalid=2793, Unknown=2, NotChecked=0, Total=4160 [2023-02-15 21:48:51,853 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 3642 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3642 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-02-15 21:48:51,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3642 Valid, 1524 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-02-15 21:48:51,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8377 states. [2023-02-15 21:48:51,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8377 to 1526. [2023-02-15 21:48:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1521 states have (on average 1.3346482577251808) internal successors, (2030), 1525 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:48:51,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2030 transitions. [2023-02-15 21:48:51,891 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2030 transitions. Word has length 53 [2023-02-15 21:48:51,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:48:51,891 INFO L495 AbstractCegarLoop]: Abstraction has 1526 states and 2030 transitions. [2023-02-15 21:48:51,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 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) [2023-02-15 21:48:51,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2030 transitions. [2023-02-15 21:48:51,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-15 21:48:51,893 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:48:51,893 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:48:51,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2023-02-15 21:48:52,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:48:52,101 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:48:52,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:48:52,102 INFO L85 PathProgramCache]: Analyzing trace with hash -878193103, now seen corresponding path program 2 times [2023-02-15 21:48:52,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:48:52,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022266364] [2023-02-15 21:48:52,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 21:48:52,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:48:52,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:48:52,103 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:48:52,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-02-15 21:48:52,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 21:48:52,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:48:52,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-15 21:48:52,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:48:52,312 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-02-15 21:48:52,313 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-02-15 21:48:52,861 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 21:48:52,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:48:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 21:48:54,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:48:54,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022266364] [2023-02-15 21:48:54,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022266364] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:48:54,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:48:54,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-02-15 21:48:54,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721487891] [2023-02-15 21:48:54,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:48:54,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-15 21:48:54,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:48:54,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-15 21:48:54,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-02-15 21:48:54,180 INFO L87 Difference]: Start difference. First operand 1526 states and 2030 transitions. Second operand has 19 states, 18 states have (on average 6.111111111111111) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:48:55,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:48:55,891 INFO L93 Difference]: Finished difference Result 1798 states and 2383 transitions. [2023-02-15 21:48:55,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-15 21:48:55,892 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 6.111111111111111) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-02-15 21:48:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:48:55,904 INFO L225 Difference]: With dead ends: 1798 [2023-02-15 21:48:55,904 INFO L226 Difference]: Without dead ends: 1659 [2023-02-15 21:48:55,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2023-02-15 21:48:55,906 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 391 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:48:55,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 567 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-15 21:48:55,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2023-02-15 21:48:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1420. [2023-02-15 21:48:55,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1415 states have (on average 1.3385159010600707) internal successors, (1894), 1419 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:48:55,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1894 transitions. [2023-02-15 21:48:55,920 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1894 transitions. Word has length 56 [2023-02-15 21:48:55,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:48:55,920 INFO L495 AbstractCegarLoop]: Abstraction has 1420 states and 1894 transitions. [2023-02-15 21:48:55,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 6.111111111111111) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:48:55,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1894 transitions. [2023-02-15 21:48:55,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-15 21:48:55,922 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:48:55,922 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:48:55,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-02-15 21:48:56,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:48:56,130 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:48:56,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:48:56,131 INFO L85 PathProgramCache]: Analyzing trace with hash -564407577, now seen corresponding path program 5 times [2023-02-15 21:48:56,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:48:56,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556252962] [2023-02-15 21:48:56,131 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 21:48:56,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:48:56,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:48:56,132 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:48:56,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-02-15 21:48:56,351 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-02-15 21:48:56,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:48:56,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-15 21:48:56,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:48:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 21:48:56,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:48:57,120 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 23 [2023-02-15 21:48:57,519 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 21:48:57,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:48:57,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556252962] [2023-02-15 21:48:57,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556252962] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:48:57,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:48:57,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-02-15 21:48:57,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408823727] [2023-02-15 21:48:57,520 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:48:57,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 21:48:57,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:48:57,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 21:48:57,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-02-15 21:48:57,521 INFO L87 Difference]: Start difference. First operand 1420 states and 1894 transitions. Second operand has 20 states, 19 states have (on average 5.684210526315789) internal successors, (108), 20 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:49:01,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:49:01,667 INFO L93 Difference]: Finished difference Result 8349 states and 11585 transitions. [2023-02-15 21:49:01,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-02-15 21:49:01,668 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.684210526315789) internal successors, (108), 20 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-02-15 21:49:01,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:49:01,679 INFO L225 Difference]: With dead ends: 8349 [2023-02-15 21:49:01,679 INFO L226 Difference]: Without dead ends: 8349 [2023-02-15 21:49:01,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=509, Invalid=2247, Unknown=0, NotChecked=0, Total=2756 [2023-02-15 21:49:01,680 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 1986 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1986 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-02-15 21:49:01,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1986 Valid, 915 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-02-15 21:49:01,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8349 states. [2023-02-15 21:49:01,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8349 to 1729. [2023-02-15 21:49:01,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1724 states have (on average 1.3491879350348028) internal successors, (2326), 1728 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:49:01,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2326 transitions. [2023-02-15 21:49:01,727 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2326 transitions. Word has length 56 [2023-02-15 21:49:01,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:49:01,727 INFO L495 AbstractCegarLoop]: Abstraction has 1729 states and 2326 transitions. [2023-02-15 21:49:01,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.684210526315789) internal successors, (108), 20 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:49:01,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2326 transitions. [2023-02-15 21:49:01,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-02-15 21:49:01,729 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:49:01,729 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:49:01,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2023-02-15 21:49:01,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:49:01,939 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:49:01,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:49:01,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2040124660, now seen corresponding path program 5 times [2023-02-15 21:49:01,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:49:01,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642934070] [2023-02-15 21:49:01,940 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 21:49:01,940 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:49:01,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:49:01,941 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:49:01,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-02-15 21:49:02,276 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-02-15 21:49:02,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:49:02,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-15 21:49:02,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:49:02,642 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:49:02,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:49:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 21 proven. 102 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:49:03,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:49:03,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642934070] [2023-02-15 21:49:03,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642934070] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:49:03,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:49:03,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37 [2023-02-15 21:49:03,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927511910] [2023-02-15 21:49:03,863 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:49:03,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-15 21:49:03,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:49:03,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-15 21:49:03,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1132, Unknown=0, NotChecked=0, Total=1332 [2023-02-15 21:49:03,864 INFO L87 Difference]: Start difference. First operand 1729 states and 2326 transitions. Second operand has 37 states, 37 states have (on average 3.1621621621621623) internal successors, (117), 37 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:49:09,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:49:09,796 INFO L93 Difference]: Finished difference Result 4983 states and 6285 transitions. [2023-02-15 21:49:09,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-02-15 21:49:09,797 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.1621621621621623) internal successors, (117), 37 states have internal predecessors, (117), 0 states have call successors, (0), 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 61 [2023-02-15 21:49:09,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:49:09,802 INFO L225 Difference]: With dead ends: 4983 [2023-02-15 21:49:09,802 INFO L226 Difference]: Without dead ends: 4569 [2023-02-15 21:49:09,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1848 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1529, Invalid=6481, Unknown=0, NotChecked=0, Total=8010 [2023-02-15 21:49:09,803 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 1401 mSDsluCounter, 2980 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-02-15 21:49:09,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 3219 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-02-15 21:49:09,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4569 states. [2023-02-15 21:49:09,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4569 to 2469. [2023-02-15 21:49:09,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2469 states, 2464 states have (on average 1.37987012987013) internal successors, (3400), 2468 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:49:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 3400 transitions. [2023-02-15 21:49:09,836 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 3400 transitions. Word has length 61 [2023-02-15 21:49:09,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:49:09,836 INFO L495 AbstractCegarLoop]: Abstraction has 2469 states and 3400 transitions. [2023-02-15 21:49:09,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.1621621621621623) internal successors, (117), 37 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:49:09,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 3400 transitions. [2023-02-15 21:49:09,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-02-15 21:49:09,838 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:49:09,838 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:49:09,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2023-02-15 21:49:10,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:49:10,048 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:49:10,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:49:10,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1288171396, now seen corresponding path program 6 times [2023-02-15 21:49:10,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:49:10,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141223359] [2023-02-15 21:49:10,049 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 21:49:10,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:49:10,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:49:10,049 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:49:10,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-02-15 21:49:10,228 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-02-15 21:49:10,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:49:10,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-15 21:49:10,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:49:10,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:49:10,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:49:10,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:49:10,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2023-02-15 21:49:10,261 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-02-15 21:49:10,261 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 19 [2023-02-15 21:49:10,859 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 1 proven. 76 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-02-15 21:49:10,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:49:12,547 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 21:49:12,548 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 21:49:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 1 proven. 76 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-02-15 21:49:12,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:49:12,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141223359] [2023-02-15 21:49:12,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141223359] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:49:12,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:49:12,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-02-15 21:49:12,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171178574] [2023-02-15 21:49:12,609 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:49:12,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 21:49:12,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:49:12,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 21:49:12,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-02-15 21:49:12,611 INFO L87 Difference]: Start difference. First operand 2469 states and 3400 transitions. Second operand has 20 states, 19 states have (on average 5.368421052631579) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:49:16,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:49:16,868 INFO L93 Difference]: Finished difference Result 6768 states and 9530 transitions. [2023-02-15 21:49:16,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-15 21:49:16,869 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.368421052631579) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 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 64 [2023-02-15 21:49:16,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:49:16,876 INFO L225 Difference]: With dead ends: 6768 [2023-02-15 21:49:16,876 INFO L226 Difference]: Without dead ends: 6768 [2023-02-15 21:49:16,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=442, Invalid=1118, Unknown=0, NotChecked=0, Total=1560 [2023-02-15 21:49:16,877 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 747 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-02-15 21:49:16,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 378 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-02-15 21:49:16,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6768 states. [2023-02-15 21:49:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6768 to 6513. [2023-02-15 21:49:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6513 states, 6508 states have (on average 1.4222495390288876) internal successors, (9256), 6512 states have internal predecessors, (9256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:49:16,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6513 states to 6513 states and 9256 transitions. [2023-02-15 21:49:16,953 INFO L78 Accepts]: Start accepts. Automaton has 6513 states and 9256 transitions. Word has length 64 [2023-02-15 21:49:16,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:49:16,955 INFO L495 AbstractCegarLoop]: Abstraction has 6513 states and 9256 transitions. [2023-02-15 21:49:16,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.368421052631579) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:49:16,955 INFO L276 IsEmpty]: Start isEmpty. Operand 6513 states and 9256 transitions. [2023-02-15 21:49:16,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-15 21:49:16,957 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:49:16,957 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:49:16,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2023-02-15 21:49:17,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:49:17,168 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:49:17,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:49:17,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1564676590, now seen corresponding path program 6 times [2023-02-15 21:49:17,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:49:17,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524832602] [2023-02-15 21:49:17,169 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 21:49:17,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:49:17,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:49:17,170 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:49:17,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-02-15 21:49:17,507 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-02-15 21:49:17,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:49:17,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-15 21:49:17,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:49:17,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:49:17,559 INFO L321 Elim1Store]: treesize reduction 26, result has 31.6 percent of original size [2023-02-15 21:49:17,560 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 14 treesize of output 25 [2023-02-15 21:49:17,566 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 24 [2023-02-15 21:49:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-02-15 21:49:18,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:49:20,937 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 21:49:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-02-15 21:49:21,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:49:21,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524832602] [2023-02-15 21:49:21,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524832602] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:49:21,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:49:21,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-02-15 21:49:21,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366588652] [2023-02-15 21:49:21,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:49:21,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-15 21:49:21,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:49:21,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-15 21:49:21,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2023-02-15 21:49:21,021 INFO L87 Difference]: Start difference. First operand 6513 states and 9256 transitions. Second operand has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 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) [2023-02-15 21:49:38,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:49:38,146 INFO L93 Difference]: Finished difference Result 19869 states and 24773 transitions. [2023-02-15 21:49:38,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-15 21:49:38,147 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 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) Word has length 69 [2023-02-15 21:49:38,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:49:38,164 INFO L225 Difference]: With dead ends: 19869 [2023-02-15 21:49:38,165 INFO L226 Difference]: Without dead ends: 19869 [2023-02-15 21:49:38,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=880, Invalid=2200, Unknown=0, NotChecked=0, Total=3080 [2023-02-15 21:49:38,166 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1307 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-15 21:49:38,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 615 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-15 21:49:38,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19869 states. [2023-02-15 21:49:38,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19869 to 7985. [2023-02-15 21:49:38,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7985 states, 7980 states have (on average 1.4536340852130325) internal successors, (11600), 7984 states have internal predecessors, (11600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:49:38,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7985 states to 7985 states and 11600 transitions. [2023-02-15 21:49:38,337 INFO L78 Accepts]: Start accepts. Automaton has 7985 states and 11600 transitions. Word has length 69 [2023-02-15 21:49:38,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:49:38,337 INFO L495 AbstractCegarLoop]: Abstraction has 7985 states and 11600 transitions. [2023-02-15 21:49:38,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 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) [2023-02-15 21:49:38,338 INFO L276 IsEmpty]: Start isEmpty. Operand 7985 states and 11600 transitions. [2023-02-15 21:49:38,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-15 21:49:38,359 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:49:38,359 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:49:38,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2023-02-15 21:49:38,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:49:38,560 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:49:38,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:49:38,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1457387987, now seen corresponding path program 3 times [2023-02-15 21:49:38,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:49:38,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325675088] [2023-02-15 21:49:38,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 21:49:38,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:49:38,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:49:38,561 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:49:38,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-02-15 21:49:38,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-15 21:49:38,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:49:38,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-15 21:49:38,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:49:38,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:49:38,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:49:38,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:49:38,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2023-02-15 21:49:39,001 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-02-15 21:49:39,001 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 19 [2023-02-15 21:49:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 21:49:40,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:49:43,079 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 21:49:43,080 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 21:49:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 21:49:43,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:49:43,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325675088] [2023-02-15 21:49:43,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325675088] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:49:43,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:49:43,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-02-15 21:49:43,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798341491] [2023-02-15 21:49:43,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:49:43,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-15 21:49:43,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:49:43,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-15 21:49:43,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2023-02-15 21:49:43,082 INFO L87 Difference]: Start difference. First operand 7985 states and 11600 transitions. Second operand has 26 states, 25 states have (on average 5.6) internal successors, (140), 26 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:49:51,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:49:51,254 INFO L93 Difference]: Finished difference Result 21354 states and 31085 transitions. [2023-02-15 21:49:51,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-15 21:49:51,255 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.6) internal successors, (140), 26 states have internal predecessors, (140), 0 states have call successors, (0), 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 71 [2023-02-15 21:49:51,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:49:51,275 INFO L225 Difference]: With dead ends: 21354 [2023-02-15 21:49:51,275 INFO L226 Difference]: Without dead ends: 21354 [2023-02-15 21:49:51,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=578, Invalid=2074, Unknown=0, NotChecked=0, Total=2652 [2023-02-15 21:49:51,276 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 1322 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-02-15 21:49:51,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1322 Valid, 1033 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-02-15 21:49:51,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21354 states. [2023-02-15 21:49:51,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21354 to 17856. [2023-02-15 21:49:51,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17856 states, 17851 states have (on average 1.4603103467592853) internal successors, (26068), 17855 states have internal predecessors, (26068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:49:51,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17856 states to 17856 states and 26068 transitions. [2023-02-15 21:49:51,663 INFO L78 Accepts]: Start accepts. Automaton has 17856 states and 26068 transitions. Word has length 71 [2023-02-15 21:49:51,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:49:51,663 INFO L495 AbstractCegarLoop]: Abstraction has 17856 states and 26068 transitions. [2023-02-15 21:49:51,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.6) internal successors, (140), 26 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:49:51,663 INFO L276 IsEmpty]: Start isEmpty. Operand 17856 states and 26068 transitions. [2023-02-15 21:49:51,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-02-15 21:49:51,674 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:49:51,675 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:49:51,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2023-02-15 21:49:51,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:49:51,875 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:49:51,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:49:51,876 INFO L85 PathProgramCache]: Analyzing trace with hash 171189742, now seen corresponding path program 4 times [2023-02-15 21:49:51,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:49:51,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921869633] [2023-02-15 21:49:51,876 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 21:49:51,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:49:51,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:49:51,877 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:49:51,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-02-15 21:49:52,114 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 21:49:52,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:49:52,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-15 21:49:52,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:49:52,169 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-02-15 21:49:52,169 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-02-15 21:49:53,155 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-15 21:49:53,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:49:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-15 21:49:56,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:49:56,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921869633] [2023-02-15 21:49:56,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921869633] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:49:56,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:49:56,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-02-15 21:49:56,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183744522] [2023-02-15 21:49:56,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:49:56,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-15 21:49:56,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:49:56,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-15 21:49:56,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2023-02-15 21:49:56,151 INFO L87 Difference]: Start difference. First operand 17856 states and 26068 transitions. Second operand has 28 states, 27 states have (on average 5.111111111111111) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:50:04,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:50:04,498 INFO L93 Difference]: Finished difference Result 40950 states and 59719 transitions. [2023-02-15 21:50:04,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-15 21:50:04,499 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.111111111111111) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 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 82 [2023-02-15 21:50:04,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:50:04,541 INFO L225 Difference]: With dead ends: 40950 [2023-02-15 21:50:04,541 INFO L226 Difference]: Without dead ends: 40950 [2023-02-15 21:50:04,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=745, Invalid=2561, Unknown=0, NotChecked=0, Total=3306 [2023-02-15 21:50:04,542 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 439 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-02-15 21:50:04,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 632 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-02-15 21:50:04,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40950 states. [2023-02-15 21:50:04,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40950 to 23383. [2023-02-15 21:50:04,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23383 states, 23378 states have (on average 1.4678330053896826) internal successors, (34315), 23382 states have internal predecessors, (34315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:50:04,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23383 states to 23383 states and 34315 transitions. [2023-02-15 21:50:04,932 INFO L78 Accepts]: Start accepts. Automaton has 23383 states and 34315 transitions. Word has length 82 [2023-02-15 21:50:04,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:50:04,933 INFO L495 AbstractCegarLoop]: Abstraction has 23383 states and 34315 transitions. [2023-02-15 21:50:04,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.111111111111111) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:50:04,933 INFO L276 IsEmpty]: Start isEmpty. Operand 23383 states and 34315 transitions. [2023-02-15 21:50:04,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-02-15 21:50:04,943 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:50:04,943 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2023-02-15 21:50:04,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2023-02-15 21:50:05,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:50:05,154 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 21:50:05,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:50:05,154 INFO L85 PathProgramCache]: Analyzing trace with hash 2147231533, now seen corresponding path program 4 times [2023-02-15 21:50:05,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:50:05,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064893037] [2023-02-15 21:50:05,154 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 21:50:05,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:50:05,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:50:05,156 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:50:05,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2023-02-15 21:50:05,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 21:50:05,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:50:05,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-15 21:50:05,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:50:05,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 21:50:05,522 INFO L321 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2023-02-15 21:50:05,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 24 [2023-02-15 21:50:05,529 INFO L350 Elim1Store]: Elim1 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 10 treesize of output 8 [2023-02-15 21:50:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 21:50:07,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:50:15,982 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 21:50:16,240 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 21:50:16,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:50:16,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064893037] [2023-02-15 21:50:16,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064893037] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:50:16,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:50:16,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2023-02-15 21:50:16,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45381535] [2023-02-15 21:50:16,240 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:50:16,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-02-15 21:50:16,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:50:16,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-02-15 21:50:16,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=855, Invalid=2451, Unknown=0, NotChecked=0, Total=3306 [2023-02-15 21:50:16,242 INFO L87 Difference]: Start difference. First operand 23383 states and 34315 transitions. Second operand has 58 states, 57 states have (on average 3.2982456140350878) internal successors, (188), 58 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)