./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5317dae 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/ldv-memsafety/memleaks_test13.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 e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 03:24:10,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 03:24:10,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 03:24:10,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 03:24:10,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 03:24:10,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 03:24:10,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 03:24:10,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 03:24:10,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 03:24:10,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 03:24:10,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 03:24:10,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 03:24:10,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 03:24:10,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 03:24:10,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 03:24:10,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 03:24:10,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 03:24:10,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 03:24:10,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 03:24:10,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 03:24:10,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 03:24:10,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 03:24:10,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 03:24:10,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 03:24:10,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 03:24:10,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 03:24:10,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 03:24:10,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 03:24:10,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 03:24:10,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 03:24:10,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 03:24:10,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 03:24:10,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 03:24:10,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 03:24:10,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 03:24:10,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 03:24:10,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 03:24:10,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 03:24:10,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 03:24:10,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 03:24:10,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 03:24:10,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-16 03:24:10,360 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 03:24:10,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 03:24:10,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 03:24:10,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 03:24:10,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 03:24:10,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 03:24:10,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 03:24:10,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 03:24:10,363 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 03:24:10,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 03:24:10,364 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 03:24:10,364 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 03:24:10,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 03:24:10,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 03:24:10,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 03:24:10,365 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-16 03:24:10,365 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-16 03:24:10,365 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-16 03:24:10,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 03:24:10,365 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-16 03:24:10,365 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 03:24:10,366 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 03:24:10,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 03:24:10,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 03:24:10,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 03:24:10,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:24:10,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 03:24:10,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 03:24:10,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 03:24:10,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 03:24:10,367 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 03:24:10,367 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 03:24:10,367 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 03:24:10,367 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 03:24:10,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af [2023-02-16 03:24:10,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 03:24:10,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 03:24:10,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 03:24:10,602 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 03:24:10,602 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 03:24:10,603 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2023-02-16 03:24:11,620 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 03:24:11,846 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 03:24:11,847 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2023-02-16 03:24:11,856 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3295e9558/c7b96326f106450da46978727c2df7ae/FLAGf677f0caa [2023-02-16 03:24:11,866 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3295e9558/c7b96326f106450da46978727c2df7ae [2023-02-16 03:24:11,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 03:24:11,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 03:24:11,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 03:24:11,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 03:24:11,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 03:24:11,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:24:11" (1/1) ... [2023-02-16 03:24:11,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe1f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:24:11, skipping insertion in model container [2023-02-16 03:24:11,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:24:11" (1/1) ... [2023-02-16 03:24:11,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 03:24:11,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 03:24:12,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:24:12,159 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) [2023-02-16 03:24:12,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7dc33471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:24:12, skipping insertion in model container [2023-02-16 03:24:12,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 03:24:12,160 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-16 03:24:12,161 INFO L158 Benchmark]: Toolchain (without parser) took 291.89ms. Allocated memory is still 127.9MB. Free memory was 89.6MB in the beginning and 76.1MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-16 03:24:12,162 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 127.9MB. Free memory is still 70.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 03:24:12,163 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.54ms. Allocated memory is still 127.9MB. Free memory was 89.6MB in the beginning and 76.1MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-16 03:24:12,164 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 127.9MB. Free memory is still 70.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.54ms. Allocated memory is still 127.9MB. Free memory was 89.6MB in the beginning and 76.1MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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/ldv-memsafety/memleaks_test13.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 e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 03:24:13,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 03:24:13,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 03:24:13,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 03:24:13,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 03:24:13,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 03:24:13,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 03:24:13,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 03:24:13,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 03:24:13,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 03:24:13,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 03:24:13,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 03:24:13,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 03:24:13,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 03:24:13,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 03:24:13,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 03:24:13,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 03:24:13,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 03:24:13,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 03:24:13,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 03:24:13,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 03:24:13,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 03:24:13,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 03:24:13,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 03:24:13,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 03:24:13,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 03:24:13,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 03:24:13,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 03:24:13,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 03:24:13,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 03:24:13,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 03:24:13,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 03:24:13,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 03:24:13,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 03:24:13,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 03:24:13,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 03:24:13,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 03:24:13,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 03:24:13,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 03:24:13,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 03:24:13,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 03:24:13,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-16 03:24:13,807 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 03:24:13,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 03:24:13,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 03:24:13,808 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 03:24:13,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 03:24:13,809 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 03:24:13,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 03:24:13,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 03:24:13,810 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 03:24:13,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 03:24:13,811 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 03:24:13,811 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 03:24:13,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 03:24:13,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 03:24:13,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 03:24:13,811 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-16 03:24:13,811 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-16 03:24:13,812 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-16 03:24:13,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 03:24:13,812 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-16 03:24:13,812 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-16 03:24:13,812 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-16 03:24:13,812 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 03:24:13,812 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 03:24:13,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 03:24:13,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 03:24:13,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 03:24:13,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:24:13,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 03:24:13,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 03:24:13,814 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-16 03:24:13,814 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-16 03:24:13,814 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 03:24:13,814 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 03:24:13,814 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 03:24:13,815 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-16 03:24:13,815 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 03:24:13,815 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af [2023-02-16 03:24:14,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 03:24:14,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 03:24:14,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 03:24:14,111 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 03:24:14,112 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 03:24:14,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2023-02-16 03:24:15,069 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 03:24:15,351 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 03:24:15,352 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2023-02-16 03:24:15,363 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e16e7f26/97bfe663dcdc43538bf778f70c424fb3/FLAG911ea784a [2023-02-16 03:24:15,373 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e16e7f26/97bfe663dcdc43538bf778f70c424fb3 [2023-02-16 03:24:15,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 03:24:15,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 03:24:15,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 03:24:15,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 03:24:15,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 03:24:15,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:24:15" (1/1) ... [2023-02-16 03:24:15,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f709784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:24:15, skipping insertion in model container [2023-02-16 03:24:15,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:24:15" (1/1) ... [2023-02-16 03:24:15,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 03:24:15,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 03:24:15,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:24:15,755 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-16 03:24:15,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 03:24:15,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:24:15,820 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 03:24:15,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:24:15,909 INFO L208 MainTranslator]: Completed translation [2023-02-16 03:24:15,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:24:15 WrapperNode [2023-02-16 03:24:15,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 03:24:15,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 03:24:15,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 03:24:15,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 03:24:15,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:24:15" (1/1) ... [2023-02-16 03:24:15,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:24:15" (1/1) ... [2023-02-16 03:24:15,962 INFO L138 Inliner]: procedures = 167, calls = 80, calls flagged for inlining = 21, calls inlined = 6, statements flattened = 57 [2023-02-16 03:24:15,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 03:24:15,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 03:24:15,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 03:24:15,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 03:24:15,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:24:15" (1/1) ... [2023-02-16 03:24:15,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:24:15" (1/1) ... [2023-02-16 03:24:15,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:24:15" (1/1) ... [2023-02-16 03:24:15,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:24:15" (1/1) ... [2023-02-16 03:24:15,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:24:15" (1/1) ... [2023-02-16 03:24:16,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:24:15" (1/1) ... [2023-02-16 03:24:16,002 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:24:15" (1/1) ... [2023-02-16 03:24:16,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:24:15" (1/1) ... [2023-02-16 03:24:16,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 03:24:16,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 03:24:16,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 03:24:16,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 03:24:16,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:24:15" (1/1) ... [2023-02-16 03:24:16,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:24:16,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:24:16,050 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) [2023-02-16 03:24:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-02-16 03:24:16,090 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-02-16 03:24:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-02-16 03:24:16,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-02-16 03:24:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-02-16 03:24:16,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-02-16 03:24:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2023-02-16 03:24:16,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2023-02-16 03:24:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 03:24:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 03:24:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 03:24:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 03:24:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 03:24:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-16 03:24:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-02-16 03:24:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-02-16 03:24:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 03:24:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 03:24:16,098 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 [2023-02-16 03:24:16,248 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 03:24:16,249 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 03:24:16,517 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 03:24:16,522 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 03:24:16,522 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-16 03:24:16,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:24:16 BoogieIcfgContainer [2023-02-16 03:24:16,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 03:24:16,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 03:24:16,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 03:24:16,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 03:24:16,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 03:24:15" (1/3) ... [2023-02-16 03:24:16,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d45ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:24:16, skipping insertion in model container [2023-02-16 03:24:16,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:24:15" (2/3) ... [2023-02-16 03:24:16,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d45ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:24:16, skipping insertion in model container [2023-02-16 03:24:16,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:24:16" (3/3) ... [2023-02-16 03:24:16,528 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test13.i [2023-02-16 03:24:16,538 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 03:24:16,538 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-02-16 03:24:16,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 03:24:16,566 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;@d999544, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 03:24:16,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-02-16 03:24:16,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 45 states have (on average 1.8) internal successors, (81), 78 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 03:24:16,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-16 03:24:16,575 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:16,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:16,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:16,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2002543009, now seen corresponding path program 1 times [2023-02-16 03:24:16,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:16,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039465034] [2023-02-16 03:24:16,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:16,587 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 [2023-02-16 03:24:16,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:16,590 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) [2023-02-16 03:24:16,631 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 [2023-02-16 03:24:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:16,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-16 03:24:16,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:16,809 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-16 03:24:16,810 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 1 case distinctions, treesize of input 14 treesize of output 20 [2023-02-16 03:24:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:16,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:16,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:16,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039465034] [2023-02-16 03:24:16,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039465034] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:16,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:16,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 03:24:16,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201320079] [2023-02-16 03:24:16,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:16,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 03:24:16,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:16,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 03:24:16,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=30, Unknown=1, NotChecked=0, Total=42 [2023-02-16 03:24:16,938 INFO L87 Difference]: Start difference. First operand has 88 states, 45 states have (on average 1.8) internal successors, (81), 78 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:17,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:17,451 INFO L93 Difference]: Finished difference Result 129 states and 131 transitions. [2023-02-16 03:24:17,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 03:24:17,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-02-16 03:24:17,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:17,459 INFO L225 Difference]: With dead ends: 129 [2023-02-16 03:24:17,459 INFO L226 Difference]: Without dead ends: 125 [2023-02-16 03:24:17,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=70, Unknown=1, NotChecked=0, Total=110 [2023-02-16 03:24:17,462 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 170 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 17 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:17,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 134 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 287 Invalid, 31 Unknown, 0 Unchecked, 0.4s Time] [2023-02-16 03:24:17,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-02-16 03:24:17,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 84. [2023-02-16 03:24:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 44 states have (on average 1.7272727272727273) internal successors, (76), 74 states have internal predecessors, (76), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 03:24:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2023-02-16 03:24:17,512 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 12 [2023-02-16 03:24:17,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:17,512 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2023-02-16 03:24:17,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:17,512 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2023-02-16 03:24:17,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-16 03:24:17,513 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:17,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:17,527 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 (2)] Ended with exit code 0 [2023-02-16 03:24:17,715 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 [2023-02-16 03:24:17,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:17,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:17,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2002543010, now seen corresponding path program 1 times [2023-02-16 03:24:17,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:17,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404889678] [2023-02-16 03:24:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:17,717 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 [2023-02-16 03:24:17,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:17,718 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) [2023-02-16 03:24:17,730 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 [2023-02-16 03:24:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:17,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-16 03:24:17,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:19,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:24:19,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-16 03:24:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:19,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:19,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:19,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404889678] [2023-02-16 03:24:19,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404889678] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:19,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:19,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 03:24:19,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92537017] [2023-02-16 03:24:19,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:19,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:24:19,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:19,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:24:19,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=40, Unknown=2, NotChecked=0, Total=56 [2023-02-16 03:24:19,972 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:28,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:28,712 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2023-02-16 03:24:28,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 03:24:28,714 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-02-16 03:24:28,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:28,715 INFO L225 Difference]: With dead ends: 123 [2023-02-16 03:24:28,715 INFO L226 Difference]: Without dead ends: 123 [2023-02-16 03:24:28,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=63, Invalid=143, Unknown=4, NotChecked=0, Total=210 [2023-02-16 03:24:28,716 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 252 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 42 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:28,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 100 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 298 Invalid, 12 Unknown, 0 Unchecked, 0.6s Time] [2023-02-16 03:24:28,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-02-16 03:24:28,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 82. [2023-02-16 03:24:28,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 72 states have internal predecessors, (74), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 03:24:28,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2023-02-16 03:24:28,729 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 12 [2023-02-16 03:24:28,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:28,729 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2023-02-16 03:24:28,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:28,730 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2023-02-16 03:24:28,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-16 03:24:28,730 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:28,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:28,738 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 [2023-02-16 03:24:28,937 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 [2023-02-16 03:24:28,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:28,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:28,938 INFO L85 PathProgramCache]: Analyzing trace with hash 663113707, now seen corresponding path program 1 times [2023-02-16 03:24:28,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:28,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195980527] [2023-02-16 03:24:28,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:28,939 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 [2023-02-16 03:24:28,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:28,940 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) [2023-02-16 03:24:28,942 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 [2023-02-16 03:24:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:28,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-16 03:24:29,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:29,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-16 03:24:29,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:29,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:29,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:29,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195980527] [2023-02-16 03:24:29,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195980527] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:29,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:29,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 03:24:29,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143170490] [2023-02-16 03:24:29,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:29,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:24:29,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:29,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:24:29,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:24:29,073 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:29,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:29,402 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2023-02-16 03:24:29,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 03:24:29,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-16 03:24:29,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:29,404 INFO L225 Difference]: With dead ends: 115 [2023-02-16 03:24:29,404 INFO L226 Difference]: Without dead ends: 115 [2023-02-16 03:24:29,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-02-16 03:24:29,405 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 66 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:29,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 350 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 03:24:29,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-02-16 03:24:29,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 81. [2023-02-16 03:24:29,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 44 states have (on average 1.6590909090909092) internal successors, (73), 71 states have internal predecessors, (73), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 03:24:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2023-02-16 03:24:29,412 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 15 [2023-02-16 03:24:29,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:29,412 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2023-02-16 03:24:29,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:29,413 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2023-02-16 03:24:29,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-16 03:24:29,413 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:29,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:29,426 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 [2023-02-16 03:24:29,626 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 [2023-02-16 03:24:29,626 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:29,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:29,627 INFO L85 PathProgramCache]: Analyzing trace with hash 663113708, now seen corresponding path program 1 times [2023-02-16 03:24:29,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:29,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595479265] [2023-02-16 03:24:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:29,627 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 [2023-02-16 03:24:29,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:29,628 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) [2023-02-16 03:24:29,630 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 [2023-02-16 03:24:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:29,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-16 03:24:29,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:31,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:24:31,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-16 03:24:31,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-16 03:24:31,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-16 03:24:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:32,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:32,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:32,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595479265] [2023-02-16 03:24:32,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595479265] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:32,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:32,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-16 03:24:32,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792332771] [2023-02-16 03:24:32,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:32,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 03:24:32,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:32,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 03:24:32,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=88, Unknown=2, NotChecked=0, Total=110 [2023-02-16 03:24:32,057 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:37,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:37,068 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2023-02-16 03:24:37,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-16 03:24:37,069 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-16 03:24:37,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:37,070 INFO L225 Difference]: With dead ends: 111 [2023-02-16 03:24:37,070 INFO L226 Difference]: Without dead ends: 111 [2023-02-16 03:24:37,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=100, Invalid=318, Unknown=2, NotChecked=0, Total=420 [2023-02-16 03:24:37,071 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 130 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 32 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:37,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 275 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 421 Invalid, 3 Unknown, 0 Unchecked, 0.6s Time] [2023-02-16 03:24:37,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-02-16 03:24:37,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 80. [2023-02-16 03:24:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 70 states have internal predecessors, (72), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 03:24:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2023-02-16 03:24:37,079 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 15 [2023-02-16 03:24:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:37,079 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2023-02-16 03:24:37,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2023-02-16 03:24:37,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-16 03:24:37,080 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:37,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:37,094 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 [2023-02-16 03:24:37,283 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 [2023-02-16 03:24:37,283 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:37,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:37,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1949585109, now seen corresponding path program 1 times [2023-02-16 03:24:37,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:37,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532401999] [2023-02-16 03:24:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:37,284 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 [2023-02-16 03:24:37,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:37,286 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) [2023-02-16 03:24:37,287 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 [2023-02-16 03:24:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:37,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 03:24:37,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:37,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:37,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:37,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532401999] [2023-02-16 03:24:37,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532401999] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:37,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:37,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 03:24:37,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487580884] [2023-02-16 03:24:37,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:37,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:24:37,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:37,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:24:37,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:24:37,386 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:37,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:37,407 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2023-02-16 03:24:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:24:37,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-02-16 03:24:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:37,409 INFO L225 Difference]: With dead ends: 110 [2023-02-16 03:24:37,409 INFO L226 Difference]: Without dead ends: 110 [2023-02-16 03:24:37,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:24:37,410 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 24 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:37,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 397 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 03:24:37,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-02-16 03:24:37,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 84. [2023-02-16 03:24:37,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 73 states have internal predecessors, (75), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-16 03:24:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2023-02-16 03:24:37,415 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 13 [2023-02-16 03:24:37,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:37,415 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2023-02-16 03:24:37,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2023-02-16 03:24:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-16 03:24:37,416 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:37,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:37,422 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 (6)] Ended with exit code 0 [2023-02-16 03:24:37,621 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 [2023-02-16 03:24:37,621 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:37,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:37,622 INFO L85 PathProgramCache]: Analyzing trace with hash 142130646, now seen corresponding path program 1 times [2023-02-16 03:24:37,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:37,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654262882] [2023-02-16 03:24:37,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:37,623 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 [2023-02-16 03:24:37,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:37,642 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) [2023-02-16 03:24:37,644 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 [2023-02-16 03:24:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:37,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-16 03:24:37,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:37,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-16 03:24:37,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-16 03:24:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:37,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:37,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:37,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654262882] [2023-02-16 03:24:37,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654262882] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:37,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:37,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:24:37,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087745761] [2023-02-16 03:24:37,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:37,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 03:24:37,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:37,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 03:24:37,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:24:37,873 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:38,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:38,205 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2023-02-16 03:24:38,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 03:24:38,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-02-16 03:24:38,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:38,207 INFO L225 Difference]: With dead ends: 109 [2023-02-16 03:24:38,207 INFO L226 Difference]: Without dead ends: 109 [2023-02-16 03:24:38,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-02-16 03:24:38,208 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 36 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:38,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 236 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 03:24:38,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-02-16 03:24:38,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 90. [2023-02-16 03:24:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.5471698113207548) internal successors, (82), 78 states have internal predecessors, (82), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-16 03:24:38,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2023-02-16 03:24:38,212 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 13 [2023-02-16 03:24:38,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:38,212 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2023-02-16 03:24:38,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:38,212 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2023-02-16 03:24:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-16 03:24:38,213 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:38,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:38,222 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 (7)] Forceful destruction successful, exit code 0 [2023-02-16 03:24:38,414 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 [2023-02-16 03:24:38,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:38,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:38,415 INFO L85 PathProgramCache]: Analyzing trace with hash 142130645, now seen corresponding path program 1 times [2023-02-16 03:24:38,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:38,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541563250] [2023-02-16 03:24:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:38,415 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 [2023-02-16 03:24:38,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:38,419 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) [2023-02-16 03:24:38,420 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 [2023-02-16 03:24:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:38,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-16 03:24:38,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:38,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-16 03:24:38,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:38,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:38,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:38,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541563250] [2023-02-16 03:24:38,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541563250] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:38,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:38,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:24:38,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599841078] [2023-02-16 03:24:38,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:38,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 03:24:38,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:38,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 03:24:38,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:24:38,553 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:38,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:38,849 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2023-02-16 03:24:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 03:24:38,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-02-16 03:24:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:38,850 INFO L225 Difference]: With dead ends: 104 [2023-02-16 03:24:38,850 INFO L226 Difference]: Without dead ends: 104 [2023-02-16 03:24:38,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-02-16 03:24:38,851 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 39 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:38,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 182 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 03:24:38,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-02-16 03:24:38,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 90. [2023-02-16 03:24:38,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.528301886792453) internal successors, (81), 78 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-16 03:24:38,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2023-02-16 03:24:38,855 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 13 [2023-02-16 03:24:38,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:38,855 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2023-02-16 03:24:38,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:38,855 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2023-02-16 03:24:38,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-16 03:24:38,856 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:38,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:38,863 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 (8)] Forceful destruction successful, exit code 0 [2023-02-16 03:24:39,065 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 [2023-02-16 03:24:39,066 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:39,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:39,066 INFO L85 PathProgramCache]: Analyzing trace with hash -918311498, now seen corresponding path program 1 times [2023-02-16 03:24:39,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:39,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475479429] [2023-02-16 03:24:39,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:39,067 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 [2023-02-16 03:24:39,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:39,069 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) [2023-02-16 03:24:39,071 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 [2023-02-16 03:24:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:39,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-16 03:24:39,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:39,166 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 0 case distinctions, treesize of input 6 treesize of output 7 [2023-02-16 03:24:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:39,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:39,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:39,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475479429] [2023-02-16 03:24:39,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475479429] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:39,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:39,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-16 03:24:39,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320428962] [2023-02-16 03:24:39,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:39,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 03:24:39,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:39,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 03:24:39,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-02-16 03:24:39,223 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:39,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:39,560 INFO L93 Difference]: Finished difference Result 127 states and 131 transitions. [2023-02-16 03:24:39,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 03:24:39,561 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-16 03:24:39,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:39,561 INFO L225 Difference]: With dead ends: 127 [2023-02-16 03:24:39,561 INFO L226 Difference]: Without dead ends: 127 [2023-02-16 03:24:39,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-02-16 03:24:39,562 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 47 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:39,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 419 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 03:24:39,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-02-16 03:24:39,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 103. [2023-02-16 03:24:39,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 63 states have (on average 1.492063492063492) internal successors, (94), 88 states have internal predecessors, (94), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-02-16 03:24:39,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2023-02-16 03:24:39,566 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 16 [2023-02-16 03:24:39,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:39,567 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2023-02-16 03:24:39,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:39,567 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2023-02-16 03:24:39,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-16 03:24:39,567 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:39,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:39,574 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 (9)] Ended with exit code 0 [2023-02-16 03:24:39,774 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 [2023-02-16 03:24:39,774 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:39,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:39,775 INFO L85 PathProgramCache]: Analyzing trace with hash -918311497, now seen corresponding path program 1 times [2023-02-16 03:24:39,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:39,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142880719] [2023-02-16 03:24:39,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:39,775 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 [2023-02-16 03:24:39,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:39,777 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) [2023-02-16 03:24:39,778 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 [2023-02-16 03:24:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:39,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-16 03:24:39,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:39,838 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-16 03:24:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:39,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:39,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:39,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142880719] [2023-02-16 03:24:39,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142880719] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:39,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:39,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-16 03:24:39,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553074614] [2023-02-16 03:24:39,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:39,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 03:24:39,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:39,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 03:24:39,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-02-16 03:24:39,944 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:40,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:40,340 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2023-02-16 03:24:40,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 03:24:40,340 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-16 03:24:40,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:40,341 INFO L225 Difference]: With dead ends: 130 [2023-02-16 03:24:40,341 INFO L226 Difference]: Without dead ends: 130 [2023-02-16 03:24:40,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-02-16 03:24:40,342 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 47 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:40,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 503 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-16 03:24:40,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-16 03:24:40,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 103. [2023-02-16 03:24:40,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 88 states have internal predecessors, (92), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-02-16 03:24:40,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2023-02-16 03:24:40,345 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 16 [2023-02-16 03:24:40,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:40,345 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2023-02-16 03:24:40,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:40,345 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2023-02-16 03:24:40,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-16 03:24:40,345 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:40,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:40,356 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 [2023-02-16 03:24:40,552 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 [2023-02-16 03:24:40,553 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:40,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:40,553 INFO L85 PathProgramCache]: Analyzing trace with hash -789228779, now seen corresponding path program 1 times [2023-02-16 03:24:40,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:40,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769482966] [2023-02-16 03:24:40,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:40,553 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 [2023-02-16 03:24:40,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:40,555 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) [2023-02-16 03:24:40,569 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 [2023-02-16 03:24:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:40,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 03:24:40,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:40,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:40,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:40,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:40,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769482966] [2023-02-16 03:24:40,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769482966] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:40,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:40,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 03:24:40,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736234977] [2023-02-16 03:24:40,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:40,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:24:40,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:40,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:24:40,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:24:40,632 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:40,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:40,648 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2023-02-16 03:24:40,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:24:40,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-16 03:24:40,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:40,649 INFO L225 Difference]: With dead ends: 91 [2023-02-16 03:24:40,649 INFO L226 Difference]: Without dead ends: 91 [2023-02-16 03:24:40,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:24:40,650 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 10 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:40,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 308 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 03:24:40,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-02-16 03:24:40,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2023-02-16 03:24:40,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 74 states have internal predecessors, (76), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-16 03:24:40,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2023-02-16 03:24:40,652 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 16 [2023-02-16 03:24:40,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:40,652 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2023-02-16 03:24:40,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:40,653 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2023-02-16 03:24:40,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 03:24:40,653 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:40,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:40,669 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 [2023-02-16 03:24:40,860 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 [2023-02-16 03:24:40,860 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:40,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:40,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2029051719, now seen corresponding path program 1 times [2023-02-16 03:24:40,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:40,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908674188] [2023-02-16 03:24:40,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:40,861 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 [2023-02-16 03:24:40,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:40,862 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) [2023-02-16 03:24:40,864 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 [2023-02-16 03:24:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:40,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 03:24:40,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:40,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:40,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:40,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908674188] [2023-02-16 03:24:40,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908674188] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:40,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:40,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:24:40,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074020798] [2023-02-16 03:24:40,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:40,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:24:40,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:40,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:24:40,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:24:40,949 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:41,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:41,056 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2023-02-16 03:24:41,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:24:41,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-02-16 03:24:41,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:41,057 INFO L225 Difference]: With dead ends: 85 [2023-02-16 03:24:41,057 INFO L226 Difference]: Without dead ends: 85 [2023-02-16 03:24:41,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:24:41,058 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 12 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:41,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 197 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:24:41,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-16 03:24:41,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-02-16 03:24:41,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 73 states have internal predecessors, (75), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-16 03:24:41,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2023-02-16 03:24:41,060 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 18 [2023-02-16 03:24:41,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:41,060 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2023-02-16 03:24:41,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:41,060 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2023-02-16 03:24:41,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 03:24:41,061 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:41,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:41,070 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 [2023-02-16 03:24:41,267 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 [2023-02-16 03:24:41,268 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:41,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:41,268 INFO L85 PathProgramCache]: Analyzing trace with hash -2029051718, now seen corresponding path program 1 times [2023-02-16 03:24:41,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:41,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578832938] [2023-02-16 03:24:41,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:41,268 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 [2023-02-16 03:24:41,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:41,270 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) [2023-02-16 03:24:41,271 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 [2023-02-16 03:24:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:41,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-16 03:24:41,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:41,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:41,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:41,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:41,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578832938] [2023-02-16 03:24:41,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578832938] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:41,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:41,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 03:24:41,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103289252] [2023-02-16 03:24:41,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:41,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:24:41,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:41,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:24:41,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:24:41,458 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:41,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:41,694 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2023-02-16 03:24:41,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 03:24:41,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-02-16 03:24:41,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:41,696 INFO L225 Difference]: With dead ends: 84 [2023-02-16 03:24:41,696 INFO L226 Difference]: Without dead ends: 84 [2023-02-16 03:24:41,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-02-16 03:24:41,696 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 80 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:41,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 273 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:24:41,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-02-16 03:24:41,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-02-16 03:24:41,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 72 states have internal predecessors, (74), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-16 03:24:41,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2023-02-16 03:24:41,698 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 18 [2023-02-16 03:24:41,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:41,698 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2023-02-16 03:24:41,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:41,698 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2023-02-16 03:24:41,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-16 03:24:41,699 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:41,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:41,709 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 [2023-02-16 03:24:41,907 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 [2023-02-16 03:24:41,907 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:41,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:41,907 INFO L85 PathProgramCache]: Analyzing trace with hash -781083149, now seen corresponding path program 1 times [2023-02-16 03:24:41,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:41,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251899836] [2023-02-16 03:24:41,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:41,908 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 [2023-02-16 03:24:41,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:41,909 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) [2023-02-16 03:24:41,910 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 [2023-02-16 03:24:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:41,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 03:24:41,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:42,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:42,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:42,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251899836] [2023-02-16 03:24:42,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251899836] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:42,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:42,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:24:42,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997003178] [2023-02-16 03:24:42,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:42,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 03:24:42,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:42,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 03:24:42,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:24:42,044 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:42,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:42,345 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2023-02-16 03:24:42,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 03:24:42,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-02-16 03:24:42,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:42,346 INFO L225 Difference]: With dead ends: 121 [2023-02-16 03:24:42,347 INFO L226 Difference]: Without dead ends: 121 [2023-02-16 03:24:42,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-16 03:24:42,347 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 94 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:42,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 124 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 03:24:42,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-02-16 03:24:42,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 92. [2023-02-16 03:24:42,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 79 states have internal predecessors, (83), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-02-16 03:24:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2023-02-16 03:24:42,357 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 19 [2023-02-16 03:24:42,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:42,357 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2023-02-16 03:24:42,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:42,357 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2023-02-16 03:24:42,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-16 03:24:42,358 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:42,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:42,366 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 [2023-02-16 03:24:42,562 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 [2023-02-16 03:24:42,562 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:42,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:42,563 INFO L85 PathProgramCache]: Analyzing trace with hash -781083148, now seen corresponding path program 1 times [2023-02-16 03:24:42,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:42,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959209693] [2023-02-16 03:24:42,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:42,564 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 [2023-02-16 03:24:42,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:42,565 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) [2023-02-16 03:24:42,566 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 [2023-02-16 03:24:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:42,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-16 03:24:42,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:42,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:42,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:42,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959209693] [2023-02-16 03:24:42,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959209693] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:42,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:42,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:24:42,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240241699] [2023-02-16 03:24:42,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:42,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 03:24:42,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:42,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 03:24:42,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:24:42,784 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:42,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:42,985 INFO L93 Difference]: Finished difference Result 102 states and 105 transitions. [2023-02-16 03:24:42,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 03:24:42,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-02-16 03:24:42,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:42,987 INFO L225 Difference]: With dead ends: 102 [2023-02-16 03:24:42,987 INFO L226 Difference]: Without dead ends: 102 [2023-02-16 03:24:42,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-16 03:24:42,988 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 22 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:42,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 237 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:24:42,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-02-16 03:24:42,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2023-02-16 03:24:42,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 64 states have (on average 1.375) internal successors, (88), 85 states have internal predecessors, (88), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2023-02-16 03:24:42,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2023-02-16 03:24:42,990 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 19 [2023-02-16 03:24:42,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:42,990 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2023-02-16 03:24:42,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:24:42,990 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2023-02-16 03:24:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-16 03:24:42,991 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:42,991 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] [2023-02-16 03:24:42,997 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 [2023-02-16 03:24:43,191 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 [2023-02-16 03:24:43,191 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:43,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:43,192 INFO L85 PathProgramCache]: Analyzing trace with hash -151348929, now seen corresponding path program 1 times [2023-02-16 03:24:43,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:43,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361195257] [2023-02-16 03:24:43,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:43,192 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 [2023-02-16 03:24:43,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:43,193 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) [2023-02-16 03:24:43,195 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 [2023-02-16 03:24:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:43,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 03:24:43,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:43,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:43,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:43,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:43,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361195257] [2023-02-16 03:24:43,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361195257] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:43,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:43,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:24:43,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468835787] [2023-02-16 03:24:43,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:43,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:24:43,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:43,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:24:43,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:24:43,309 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 03:24:43,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:43,441 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2023-02-16 03:24:43,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:24:43,441 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-02-16 03:24:43,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:43,442 INFO L225 Difference]: With dead ends: 101 [2023-02-16 03:24:43,442 INFO L226 Difference]: Without dead ends: 82 [2023-02-16 03:24:43,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:24:43,443 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 35 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:43,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 83 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:24:43,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-02-16 03:24:43,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-02-16 03:24:43,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 50 states have (on average 1.46) internal successors, (73), 70 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 03:24:43,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2023-02-16 03:24:43,453 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 24 [2023-02-16 03:24:43,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:43,454 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2023-02-16 03:24:43,454 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 03:24:43,454 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2023-02-16 03:24:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-16 03:24:43,456 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:43,456 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] [2023-02-16 03:24:43,463 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 [2023-02-16 03:24:43,663 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 [2023-02-16 03:24:43,663 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:43,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:43,663 INFO L85 PathProgramCache]: Analyzing trace with hash 345895671, now seen corresponding path program 1 times [2023-02-16 03:24:43,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:43,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641659395] [2023-02-16 03:24:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:43,664 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 [2023-02-16 03:24:43,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:43,666 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) [2023-02-16 03:24:43,666 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 [2023-02-16 03:24:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:43,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-16 03:24:43,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:43,752 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-16 03:24:43,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:24:43,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:24:44,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-02-16 03:24:44,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-16 03:24:44,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:44,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:44,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:44,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641659395] [2023-02-16 03:24:44,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641659395] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:44,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:44,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-02-16 03:24:44,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128786124] [2023-02-16 03:24:44,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:44,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 03:24:44,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:44,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 03:24:44,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-02-16 03:24:44,199 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:24:45,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:45,040 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2023-02-16 03:24:45,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-16 03:24:45,040 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2023-02-16 03:24:45,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:45,041 INFO L225 Difference]: With dead ends: 103 [2023-02-16 03:24:45,041 INFO L226 Difference]: Without dead ends: 103 [2023-02-16 03:24:45,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-02-16 03:24:45,041 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 98 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:45,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 337 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-16 03:24:45,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-02-16 03:24:45,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 83. [2023-02-16 03:24:45,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 70 states have internal predecessors, (73), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 03:24:45,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2023-02-16 03:24:45,044 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 27 [2023-02-16 03:24:45,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:45,044 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2023-02-16 03:24:45,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:24:45,044 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2023-02-16 03:24:45,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-16 03:24:45,044 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:45,044 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] [2023-02-16 03:24:45,053 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 (17)] Ended with exit code 0 [2023-02-16 03:24:45,244 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 [2023-02-16 03:24:45,245 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:45,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:45,245 INFO L85 PathProgramCache]: Analyzing trace with hash 345895670, now seen corresponding path program 1 times [2023-02-16 03:24:45,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:45,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705561174] [2023-02-16 03:24:45,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:45,245 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 [2023-02-16 03:24:45,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:45,261 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) [2023-02-16 03:24:45,263 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 [2023-02-16 03:24:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:45,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-16 03:24:45,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:45,342 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 0 case distinctions, treesize of input 6 treesize of output 7 [2023-02-16 03:24:45,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:24:45,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-02-16 03:24:45,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:45,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:45,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:45,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705561174] [2023-02-16 03:24:45,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705561174] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:45,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:45,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-02-16 03:24:45,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878773516] [2023-02-16 03:24:45,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:45,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-16 03:24:45,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:45,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-16 03:24:45,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-02-16 03:24:45,591 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:24:46,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:46,341 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2023-02-16 03:24:46,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-16 03:24:46,341 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2023-02-16 03:24:46,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:46,342 INFO L225 Difference]: With dead ends: 101 [2023-02-16 03:24:46,342 INFO L226 Difference]: Without dead ends: 101 [2023-02-16 03:24:46,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-02-16 03:24:46,342 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 100 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:46,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 302 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-16 03:24:46,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-16 03:24:46,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 84. [2023-02-16 03:24:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 71 states have internal predecessors, (75), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 03:24:46,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2023-02-16 03:24:46,345 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 27 [2023-02-16 03:24:46,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:46,345 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2023-02-16 03:24:46,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:24:46,345 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2023-02-16 03:24:46,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-16 03:24:46,345 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:46,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:46,353 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 [2023-02-16 03:24:46,545 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 [2023-02-16 03:24:46,546 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:46,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:46,546 INFO L85 PathProgramCache]: Analyzing trace with hash -566103308, now seen corresponding path program 1 times [2023-02-16 03:24:46,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:46,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053049087] [2023-02-16 03:24:46,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:46,547 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 [2023-02-16 03:24:46,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:46,548 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) [2023-02-16 03:24:46,549 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 [2023-02-16 03:24:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:46,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-16 03:24:46,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:46,683 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 0 case distinctions, treesize of input 6 treesize of output 7 [2023-02-16 03:24:46,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:24:46,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-02-16 03:24:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:46,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:46,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:46,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053049087] [2023-02-16 03:24:46,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053049087] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:46,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:46,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-02-16 03:24:46,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895715270] [2023-02-16 03:24:46,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:46,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-16 03:24:46,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:46,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-16 03:24:46,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-02-16 03:24:46,970 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:24:48,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:48,006 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2023-02-16 03:24:48,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-16 03:24:48,006 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2023-02-16 03:24:48,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:48,007 INFO L225 Difference]: With dead ends: 104 [2023-02-16 03:24:48,007 INFO L226 Difference]: Without dead ends: 104 [2023-02-16 03:24:48,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2023-02-16 03:24:48,007 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 133 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:48,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 298 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-16 03:24:48,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-02-16 03:24:48,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 92. [2023-02-16 03:24:48,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 78 states have internal predecessors, (88), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 03:24:48,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2023-02-16 03:24:48,010 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 32 [2023-02-16 03:24:48,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:48,010 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2023-02-16 03:24:48,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:24:48,010 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2023-02-16 03:24:48,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-16 03:24:48,010 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:48,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:48,024 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 (19)] Forceful destruction successful, exit code 0 [2023-02-16 03:24:48,219 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 [2023-02-16 03:24:48,220 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:48,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:48,220 INFO L85 PathProgramCache]: Analyzing trace with hash -566103307, now seen corresponding path program 1 times [2023-02-16 03:24:48,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:48,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455082342] [2023-02-16 03:24:48,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:48,221 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 [2023-02-16 03:24:48,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:48,222 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) [2023-02-16 03:24:48,255 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 [2023-02-16 03:24:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:48,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-16 03:24:48,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:48,322 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-16 03:24:48,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:24:48,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:24:48,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-02-16 03:24:48,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-16 03:24:48,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:48,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:48,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:48,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455082342] [2023-02-16 03:24:48,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455082342] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:48,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:48,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-02-16 03:24:48,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555044660] [2023-02-16 03:24:48,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:48,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-16 03:24:48,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:48,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-16 03:24:48,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-02-16 03:24:48,753 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:24:49,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:49,739 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2023-02-16 03:24:49,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-16 03:24:49,740 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2023-02-16 03:24:49,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:49,740 INFO L225 Difference]: With dead ends: 102 [2023-02-16 03:24:49,740 INFO L226 Difference]: Without dead ends: 102 [2023-02-16 03:24:49,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2023-02-16 03:24:49,741 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 109 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:49,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 353 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-16 03:24:49,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-02-16 03:24:49,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2023-02-16 03:24:49,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.4098360655737705) internal successors, (86), 78 states have internal predecessors, (86), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 03:24:49,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2023-02-16 03:24:49,743 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 32 [2023-02-16 03:24:49,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:49,743 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2023-02-16 03:24:49,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:24:49,743 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2023-02-16 03:24:49,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-16 03:24:49,743 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:49,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:49,751 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 [2023-02-16 03:24:49,951 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 [2023-02-16 03:24:49,951 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:49,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:49,951 INFO L85 PathProgramCache]: Analyzing trace with hash -372722091, now seen corresponding path program 1 times [2023-02-16 03:24:49,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:49,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716611792] [2023-02-16 03:24:49,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:49,952 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 [2023-02-16 03:24:49,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:49,953 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) [2023-02-16 03:24:49,958 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 [2023-02-16 03:24:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:50,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-16 03:24:50,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:50,077 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-16 03:24:50,078 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 13 treesize of output 13 [2023-02-16 03:24:50,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:24:50,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-02-16 03:24:50,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:50,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:50,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:50,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716611792] [2023-02-16 03:24:50,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716611792] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:50,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:50,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-02-16 03:24:50,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384201420] [2023-02-16 03:24:50,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:50,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-16 03:24:50,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:50,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-16 03:24:50,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-02-16 03:24:50,332 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:24:51,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:51,310 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions. [2023-02-16 03:24:51,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-16 03:24:51,311 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2023-02-16 03:24:51,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:51,312 INFO L225 Difference]: With dead ends: 131 [2023-02-16 03:24:51,312 INFO L226 Difference]: Without dead ends: 131 [2023-02-16 03:24:51,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2023-02-16 03:24:51,312 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 234 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:51,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 129 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-16 03:24:51,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-02-16 03:24:51,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 85. [2023-02-16 03:24:51,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 72 states have internal predecessors, (78), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 03:24:51,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2023-02-16 03:24:51,314 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 33 [2023-02-16 03:24:51,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:51,314 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2023-02-16 03:24:51,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:24:51,315 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2023-02-16 03:24:51,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-16 03:24:51,315 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:51,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:51,322 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 [2023-02-16 03:24:51,521 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 [2023-02-16 03:24:51,521 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:51,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:51,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1552970525, now seen corresponding path program 1 times [2023-02-16 03:24:51,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:51,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458950661] [2023-02-16 03:24:51,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:51,523 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 [2023-02-16 03:24:51,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:51,524 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) [2023-02-16 03:24:51,527 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 [2023-02-16 03:24:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:51,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 53 conjunts are in the unsatisfiable core [2023-02-16 03:24:51,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:51,689 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-16 03:24:51,690 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 13 treesize of output 13 [2023-02-16 03:24:51,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 03:24:51,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:24:51,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-16 03:24:51,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:24:51,991 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-02-16 03:24:51,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 34 [2023-02-16 03:24:52,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2023-02-16 03:24:52,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-02-16 03:24:52,455 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-16 03:24:52,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2023-02-16 03:24:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:52,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:52,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:52,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458950661] [2023-02-16 03:24:52,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458950661] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:52,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:52,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-02-16 03:24:52,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208454402] [2023-02-16 03:24:52,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:52,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-16 03:24:52,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:52,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-16 03:24:52,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2023-02-16 03:24:52,507 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand has 22 states, 20 states have (on average 1.4) internal successors, (28), 17 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:24:54,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:54,413 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2023-02-16 03:24:54,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-16 03:24:54,414 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.4) internal successors, (28), 17 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2023-02-16 03:24:54,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:54,415 INFO L225 Difference]: With dead ends: 89 [2023-02-16 03:24:54,415 INFO L226 Difference]: Without dead ends: 89 [2023-02-16 03:24:54,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=170, Invalid=1390, Unknown=0, NotChecked=0, Total=1560 [2023-02-16 03:24:54,417 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 70 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 18 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:54,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 526 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 810 Invalid, 4 Unknown, 0 Unchecked, 1.1s Time] [2023-02-16 03:24:54,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-16 03:24:54,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2023-02-16 03:24:54,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.375) internal successors, (77), 72 states have internal predecessors, (77), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 03:24:54,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2023-02-16 03:24:54,435 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 35 [2023-02-16 03:24:54,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:54,435 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2023-02-16 03:24:54,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.4) internal successors, (28), 17 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:24:54,436 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2023-02-16 03:24:54,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-16 03:24:54,440 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:54,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:54,448 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 (22)] Ended with exit code 0 [2023-02-16 03:24:54,647 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 [2023-02-16 03:24:54,648 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:54,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:54,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1552970526, now seen corresponding path program 1 times [2023-02-16 03:24:54,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:54,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793686994] [2023-02-16 03:24:54,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:54,648 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 [2023-02-16 03:24:54,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:54,650 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) [2023-02-16 03:24:54,650 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 [2023-02-16 03:24:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:54,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 70 conjunts are in the unsatisfiable core [2023-02-16 03:24:54,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:54,863 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-16 03:24:54,863 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 13 treesize of output 13 [2023-02-16 03:24:54,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 03:24:54,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 03:24:55,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:24:55,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:24:55,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-16 03:24:55,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-16 03:24:55,375 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-02-16 03:24:55,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2023-02-16 03:24:55,409 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-02-16 03:24:55,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2023-02-16 03:24:55,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2023-02-16 03:24:55,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2023-02-16 03:24:56,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 32 [2023-02-16 03:24:56,094 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-16 03:24:56,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2023-02-16 03:24:56,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:24:56,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:24:56,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:24:56,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793686994] [2023-02-16 03:24:56,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793686994] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:24:56,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:24:56,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-02-16 03:24:56,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923926201] [2023-02-16 03:24:56,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:24:56,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-16 03:24:56,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:24:56,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-16 03:24:56,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2023-02-16 03:24:56,192 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 23 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:24:58,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:24:58,406 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2023-02-16 03:24:58,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-16 03:24:58,407 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2023-02-16 03:24:58,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:24:58,407 INFO L225 Difference]: With dead ends: 87 [2023-02-16 03:24:58,407 INFO L226 Difference]: Without dead ends: 87 [2023-02-16 03:24:58,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=193, Invalid=1529, Unknown=0, NotChecked=0, Total=1722 [2023-02-16 03:24:58,408 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 131 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:24:58,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 535 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-16 03:24:58,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-16 03:24:58,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2023-02-16 03:24:58,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 72 states have internal predecessors, (76), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 03:24:58,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2023-02-16 03:24:58,411 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 35 [2023-02-16 03:24:58,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:24:58,411 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2023-02-16 03:24:58,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:24:58,411 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2023-02-16 03:24:58,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-16 03:24:58,411 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:24:58,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:24:58,422 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 [2023-02-16 03:24:58,618 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 [2023-02-16 03:24:58,618 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_list_delErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:24:58,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:24:58,618 INFO L85 PathProgramCache]: Analyzing trace with hash 897446074, now seen corresponding path program 1 times [2023-02-16 03:24:58,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:24:58,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540443448] [2023-02-16 03:24:58,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:24:58,619 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 [2023-02-16 03:24:58,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:24:58,620 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) [2023-02-16 03:24:58,622 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 [2023-02-16 03:24:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:24:58,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-16 03:24:58,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:24:58,785 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-16 03:24:58,785 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 13 treesize of output 13 [2023-02-16 03:24:58,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-16 03:24:59,996 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-02-16 03:24:59,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2023-02-16 03:25:00,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:25:00,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-02-16 03:25:00,424 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-02-16 03:25:00,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 14 [2023-02-16 03:25:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:25:00,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:25:00,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:25:00,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540443448] [2023-02-16 03:25:00,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540443448] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:25:00,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:25:00,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-02-16 03:25:00,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594055504] [2023-02-16 03:25:00,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:25:00,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-16 03:25:00,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:25:00,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-16 03:25:00,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2023-02-16 03:25:00,484 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 22 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:25:04,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:25:06,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:25:06,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:25:06,789 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2023-02-16 03:25:06,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-16 03:25:06,790 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 36 [2023-02-16 03:25:06,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:25:06,791 INFO L225 Difference]: With dead ends: 87 [2023-02-16 03:25:06,791 INFO L226 Difference]: Without dead ends: 87 [2023-02-16 03:25:06,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=271, Invalid=1535, Unknown=0, NotChecked=0, Total=1806 [2023-02-16 03:25:06,792 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 154 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 25 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:25:06,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 222 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 945 Invalid, 9 Unknown, 0 Unchecked, 5.3s Time] [2023-02-16 03:25:06,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-16 03:25:06,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2023-02-16 03:25:06,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 72 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 03:25:06,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2023-02-16 03:25:06,794 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 36 [2023-02-16 03:25:06,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:25:06,794 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2023-02-16 03:25:06,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:25:06,795 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2023-02-16 03:25:06,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-16 03:25:06,795 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:25:06,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:25:06,805 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 (24)] Forceful destruction successful, exit code 0 [2023-02-16 03:25:07,003 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 [2023-02-16 03:25:07,004 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_list_delErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:25:07,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:25:07,004 INFO L85 PathProgramCache]: Analyzing trace with hash 897446075, now seen corresponding path program 1 times [2023-02-16 03:25:07,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:25:07,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858651385] [2023-02-16 03:25:07,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:25:07,005 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 [2023-02-16 03:25:07,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:25:07,006 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) [2023-02-16 03:25:07,008 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 [2023-02-16 03:25:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:25:07,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 54 conjunts are in the unsatisfiable core [2023-02-16 03:25:07,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:25:07,194 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-16 03:25:07,194 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 13 treesize of output 13 [2023-02-16 03:25:07,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-16 03:25:07,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-16 03:25:08,595 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2023-02-16 03:25:08,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2023-02-16 03:25:08,621 INFO L321 Elim1Store]: treesize reduction 43, result has 23.2 percent of original size [2023-02-16 03:25:08,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2023-02-16 03:25:09,378 INFO L321 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-02-16 03:25:09,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 40 [2023-02-16 03:25:09,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 12 [2023-02-16 03:25:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:25:09,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:25:09,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:25:09,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858651385] [2023-02-16 03:25:09,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858651385] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:25:09,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:25:09,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-02-16 03:25:09,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035054543] [2023-02-16 03:25:09,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:25:09,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-16 03:25:09,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:25:09,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-16 03:25:09,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2023-02-16 03:25:09,471 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 17 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:25:24,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:25:24,284 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2023-02-16 03:25:24,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-16 03:25:24,285 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 17 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 36 [2023-02-16 03:25:24,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:25:24,285 INFO L225 Difference]: With dead ends: 86 [2023-02-16 03:25:24,285 INFO L226 Difference]: Without dead ends: 86 [2023-02-16 03:25:24,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=212, Invalid=1348, Unknown=0, NotChecked=0, Total=1560 [2023-02-16 03:25:24,286 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 127 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:25:24,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 265 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-16 03:25:24,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-16 03:25:24,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2023-02-16 03:25:24,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 72 states have internal predecessors, (74), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 03:25:24,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2023-02-16 03:25:24,288 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 36 [2023-02-16 03:25:24,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:25:24,288 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2023-02-16 03:25:24,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 17 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 03:25:24,288 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2023-02-16 03:25:24,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-16 03:25:24,288 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:25:24,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:25:24,296 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 [2023-02-16 03:25:24,489 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 [2023-02-16 03:25:24,489 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:25:24,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:25:24,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2088327703, now seen corresponding path program 1 times [2023-02-16 03:25:24,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:25:24,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657093561] [2023-02-16 03:25:24,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:25:24,490 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 [2023-02-16 03:25:24,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:25:24,518 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) [2023-02-16 03:25:24,519 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 [2023-02-16 03:25:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:25:24,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-16 03:25:24,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:25:24,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:25:25,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-02-16 03:25:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:25:25,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:25:25,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:25:25,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657093561] [2023-02-16 03:25:25,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657093561] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:25:25,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:25:25,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-02-16 03:25:25,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707946500] [2023-02-16 03:25:25,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:25:25,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 03:25:25,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:25:25,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 03:25:25,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-02-16 03:25:25,250 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 03:25:26,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:25:26,048 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2023-02-16 03:25:26,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-16 03:25:26,049 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 41 [2023-02-16 03:25:26,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:25:26,049 INFO L225 Difference]: With dead ends: 86 [2023-02-16 03:25:26,049 INFO L226 Difference]: Without dead ends: 86 [2023-02-16 03:25:26,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2023-02-16 03:25:26,050 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 78 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:25:26,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 407 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-16 03:25:26,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-16 03:25:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2023-02-16 03:25:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 72 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 03:25:26,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2023-02-16 03:25:26,051 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 41 [2023-02-16 03:25:26,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:25:26,052 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2023-02-16 03:25:26,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 03:25:26,052 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2023-02-16 03:25:26,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-16 03:25:26,052 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:25:26,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:25:26,061 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 (26)] Forceful destruction successful, exit code 0 [2023-02-16 03:25:26,252 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 [2023-02-16 03:25:26,253 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:25:26,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:25:26,253 INFO L85 PathProgramCache]: Analyzing trace with hash 769395034, now seen corresponding path program 1 times [2023-02-16 03:25:26,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:25:26,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338599397] [2023-02-16 03:25:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:25:26,253 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 [2023-02-16 03:25:26,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:25:26,254 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) [2023-02-16 03:25:26,256 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 [2023-02-16 03:25:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:25:26,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 58 conjunts are in the unsatisfiable core [2023-02-16 03:25:26,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:25:26,511 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-16 03:25:26,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-02-16 03:25:26,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 03:25:26,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:25:26,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-16 03:25:26,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:25:26,843 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-02-16 03:25:26,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 34 [2023-02-16 03:25:27,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2023-02-16 03:25:27,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-02-16 03:25:27,477 INFO L321 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2023-02-16 03:25:27,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 20 [2023-02-16 03:25:27,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2023-02-16 03:25:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:25:27,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:25:27,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:25:27,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338599397] [2023-02-16 03:25:27,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338599397] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:25:27,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:25:27,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-02-16 03:25:27,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821359605] [2023-02-16 03:25:27,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:25:27,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-16 03:25:27,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:25:27,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-16 03:25:27,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2023-02-16 03:25:27,564 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand has 26 states, 24 states have (on average 1.5) internal successors, (36), 21 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 03:25:30,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:25:30,070 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2023-02-16 03:25:30,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-02-16 03:25:30,070 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 1.5) internal successors, (36), 21 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 44 [2023-02-16 03:25:30,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:25:30,071 INFO L225 Difference]: With dead ends: 127 [2023-02-16 03:25:30,071 INFO L226 Difference]: Without dead ends: 127 [2023-02-16 03:25:30,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=255, Invalid=1815, Unknown=0, NotChecked=0, Total=2070 [2023-02-16 03:25:30,071 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 119 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 20 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:25:30,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 397 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1037 Invalid, 3 Unknown, 0 Unchecked, 1.5s Time] [2023-02-16 03:25:30,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-02-16 03:25:30,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 87. [2023-02-16 03:25:30,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 74 states have internal predecessors, (76), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 03:25:30,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2023-02-16 03:25:30,074 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 44 [2023-02-16 03:25:30,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:25:30,074 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2023-02-16 03:25:30,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 1.5) internal successors, (36), 21 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 03:25:30,074 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2023-02-16 03:25:30,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-16 03:25:30,074 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:25:30,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:25:30,082 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 (27)] Ended with exit code 0 [2023-02-16 03:25:30,282 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 [2023-02-16 03:25:30,282 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:25:30,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:25:30,283 INFO L85 PathProgramCache]: Analyzing trace with hash 769395035, now seen corresponding path program 1 times [2023-02-16 03:25:30,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:25:30,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396072815] [2023-02-16 03:25:30,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:25:30,283 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 [2023-02-16 03:25:30,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:25:30,284 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) [2023-02-16 03:25:30,286 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 [2023-02-16 03:25:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:25:30,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 76 conjunts are in the unsatisfiable core [2023-02-16 03:25:30,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:25:30,569 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-16 03:25:30,569 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 13 treesize of output 13 [2023-02-16 03:25:30,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 03:25:30,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 03:25:30,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:25:30,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:25:30,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-16 03:25:30,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-16 03:25:31,009 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-02-16 03:25:31,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2023-02-16 03:25:31,040 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-02-16 03:25:31,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2023-02-16 03:25:31,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2023-02-16 03:25:31,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2023-02-16 03:25:32,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 49 [2023-02-16 03:25:32,331 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-16 03:25:32,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 19 [2023-02-16 03:25:32,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:25:32,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:25:32,414 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:25:32,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396072815] [2023-02-16 03:25:32,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396072815] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:25:32,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:25:32,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-02-16 03:25:32,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003355118] [2023-02-16 03:25:32,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:25:32,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-16 03:25:32,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:25:32,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-16 03:25:32,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2023-02-16 03:25:32,416 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 26 states, 24 states have (on average 1.5) internal successors, (36), 21 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 03:25:35,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:25:35,471 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2023-02-16 03:25:35,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-16 03:25:35,472 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 1.5) internal successors, (36), 21 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 44 [2023-02-16 03:25:35,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:25:35,473 INFO L225 Difference]: With dead ends: 88 [2023-02-16 03:25:35,473 INFO L226 Difference]: Without dead ends: 88 [2023-02-16 03:25:35,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=242, Invalid=2208, Unknown=0, NotChecked=0, Total=2450 [2023-02-16 03:25:35,473 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 149 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:25:35,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 485 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-02-16 03:25:35,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-16 03:25:35,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2023-02-16 03:25:35,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.293103448275862) internal successors, (75), 74 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 03:25:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2023-02-16 03:25:35,475 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 44 [2023-02-16 03:25:35,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:25:35,475 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2023-02-16 03:25:35,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 1.5) internal successors, (36), 21 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 03:25:35,476 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2023-02-16 03:25:35,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-16 03:25:35,476 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:25:35,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:25:35,484 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 (28)] Ended with exit code 0 [2023-02-16 03:25:35,680 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 [2023-02-16 03:25:35,680 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:25:35,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:25:35,680 INFO L85 PathProgramCache]: Analyzing trace with hash 305014949, now seen corresponding path program 1 times [2023-02-16 03:25:35,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:25:35,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70772918] [2023-02-16 03:25:35,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:25:35,681 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 [2023-02-16 03:25:35,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:25:35,687 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) [2023-02-16 03:25:35,689 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 [2023-02-16 03:25:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:25:35,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 03:25:35,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:25:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:25:35,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:25:35,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:25:35,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70772918] [2023-02-16 03:25:35,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70772918] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:25:35,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:25:35,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 03:25:35,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311331940] [2023-02-16 03:25:35,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:25:35,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 03:25:35,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:25:35,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 03:25:35,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:25:35,841 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 03:25:35,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:25:35,997 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2023-02-16 03:25:35,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 03:25:35,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2023-02-16 03:25:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:25:35,999 INFO L225 Difference]: With dead ends: 85 [2023-02-16 03:25:35,999 INFO L226 Difference]: Without dead ends: 85 [2023-02-16 03:25:35,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:25:35,999 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 39 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:25:35,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 172 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:25:36,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-16 03:25:36,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-02-16 03:25:36,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 72 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 03:25:36,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2023-02-16 03:25:36,001 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 49 [2023-02-16 03:25:36,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:25:36,001 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2023-02-16 03:25:36,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 03:25:36,001 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2023-02-16 03:25:36,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-16 03:25:36,001 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:25:36,002 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:25:36,010 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 (29)] Ended with exit code 0 [2023-02-16 03:25:36,202 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 [2023-02-16 03:25:36,202 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:25:36,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:25:36,202 INFO L85 PathProgramCache]: Analyzing trace with hash 305014950, now seen corresponding path program 1 times [2023-02-16 03:25:36,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:25:36,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004227420] [2023-02-16 03:25:36,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:25:36,203 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 [2023-02-16 03:25:36,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:25:36,204 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) [2023-02-16 03:25:36,206 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 [2023-02-16 03:25:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:25:36,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 30 conjunts are in the unsatisfiable core [2023-02-16 03:25:36,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:25:36,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-02-16 03:25:36,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 20 [2023-02-16 03:25:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:25:36,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:25:37,726 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:25:37,727 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 36 treesize of output 40 [2023-02-16 03:25:38,585 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:25:38,585 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 65 treesize of output 69 [2023-02-16 03:25:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:25:41,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:25:41,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004227420] [2023-02-16 03:25:41,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004227420] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:25:41,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:25:41,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-02-16 03:25:41,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592104023] [2023-02-16 03:25:41,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:25:41,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-16 03:25:41,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:25:41,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-16 03:25:41,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2023-02-16 03:25:41,339 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand has 26 states, 25 states have (on average 2.4) internal successors, (60), 22 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-16 03:25:46,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:25:46,412 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2023-02-16 03:25:46,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 03:25:46,414 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.4) internal successors, (60), 22 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2023-02-16 03:25:46,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:25:46,414 INFO L225 Difference]: With dead ends: 96 [2023-02-16 03:25:46,414 INFO L226 Difference]: Without dead ends: 96 [2023-02-16 03:25:46,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2023-02-16 03:25:46,415 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 134 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:25:46,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 439 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-02-16 03:25:46,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-02-16 03:25:46,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2023-02-16 03:25:46,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 63 states have (on average 1.253968253968254) internal successors, (79), 77 states have internal predecessors, (79), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 03:25:46,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2023-02-16 03:25:46,417 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 49 [2023-02-16 03:25:46,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:25:46,418 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2023-02-16 03:25:46,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.4) internal successors, (60), 22 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-16 03:25:46,418 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2023-02-16 03:25:46,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-16 03:25:46,418 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:25:46,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:25:46,444 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 (30)] Forceful destruction successful, exit code 0 [2023-02-16 03:25:46,625 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 [2023-02-16 03:25:46,625 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:25:46,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:25:46,626 INFO L85 PathProgramCache]: Analyzing trace with hash 862140099, now seen corresponding path program 1 times [2023-02-16 03:25:46,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:25:46,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152096227] [2023-02-16 03:25:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:25:46,626 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 [2023-02-16 03:25:46,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:25:46,641 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) [2023-02-16 03:25:46,642 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 [2023-02-16 03:25:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:25:46,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 03:25:46,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:25:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:25:46,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:25:46,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:25:46,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152096227] [2023-02-16 03:25:46,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152096227] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:25:46,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:25:46,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 03:25:46,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501468414] [2023-02-16 03:25:46,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:25:46,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 03:25:46,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:25:46,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 03:25:46,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:25:46,811 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 03:25:47,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:25:47,036 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions. [2023-02-16 03:25:47,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 03:25:47,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2023-02-16 03:25:47,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:25:47,037 INFO L225 Difference]: With dead ends: 89 [2023-02-16 03:25:47,037 INFO L226 Difference]: Without dead ends: 89 [2023-02-16 03:25:47,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-02-16 03:25:47,037 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 73 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:25:47,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 153 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:25:47,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-16 03:25:47,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-02-16 03:25:47,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 75 states have internal predecessors, (77), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 03:25:47,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2023-02-16 03:25:47,039 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 50 [2023-02-16 03:25:47,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:25:47,039 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2023-02-16 03:25:47,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 03:25:47,039 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2023-02-16 03:25:47,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-16 03:25:47,040 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:25:47,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:25:47,048 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 (31)] Ended with exit code 0 [2023-02-16 03:25:47,247 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 [2023-02-16 03:25:47,248 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:25:47,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:25:47,248 INFO L85 PathProgramCache]: Analyzing trace with hash 862140100, now seen corresponding path program 1 times [2023-02-16 03:25:47,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:25:47,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804929913] [2023-02-16 03:25:47,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:25:47,249 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 [2023-02-16 03:25:47,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:25:47,250 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) [2023-02-16 03:25:47,252 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 [2023-02-16 03:25:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:25:47,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-16 03:25:47,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:25:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 03:25:47,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:25:47,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:25:47,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804929913] [2023-02-16 03:25:47,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804929913] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:25:47,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:25:47,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 03:25:47,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171869468] [2023-02-16 03:25:47,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:25:47,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:25:47,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:25:47,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:25:47,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:25:47,574 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-16 03:25:47,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:25:47,855 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2023-02-16 03:25:47,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 03:25:47,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 50 [2023-02-16 03:25:47,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:25:47,856 INFO L225 Difference]: With dead ends: 88 [2023-02-16 03:25:47,856 INFO L226 Difference]: Without dead ends: 88 [2023-02-16 03:25:47,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-02-16 03:25:47,857 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 51 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:25:47,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 172 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:25:47,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-16 03:25:47,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-02-16 03:25:47,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 74 states have internal predecessors, (76), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 03:25:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2023-02-16 03:25:47,859 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 50 [2023-02-16 03:25:47,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:25:47,859 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2023-02-16 03:25:47,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-16 03:25:47,859 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2023-02-16 03:25:47,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-02-16 03:25:47,863 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:25:47,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:25:47,872 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 [2023-02-16 03:25:48,071 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 [2023-02-16 03:25:48,072 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:25:48,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:25:48,072 INFO L85 PathProgramCache]: Analyzing trace with hash 956539334, now seen corresponding path program 1 times [2023-02-16 03:25:48,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:25:48,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426141309] [2023-02-16 03:25:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:25:48,073 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 [2023-02-16 03:25:48,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:25:48,074 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) [2023-02-16 03:25:48,110 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 [2023-02-16 03:25:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:25:48,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-16 03:25:48,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:25:48,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 03:25:48,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 03:25:48,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-02-16 03:25:48,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-02-16 03:25:48,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 03:25:48,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:25:48,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:25:48,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426141309] [2023-02-16 03:25:48,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426141309] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:25:48,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:25:48,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-16 03:25:48,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831886604] [2023-02-16 03:25:48,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:25:48,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-16 03:25:48,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:25:48,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-16 03:25:48,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-16 03:25:48,584 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-16 03:25:49,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:25:49,382 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2023-02-16 03:25:49,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 03:25:49,382 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 51 [2023-02-16 03:25:49,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:25:49,383 INFO L225 Difference]: With dead ends: 87 [2023-02-16 03:25:49,383 INFO L226 Difference]: Without dead ends: 87 [2023-02-16 03:25:49,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2023-02-16 03:25:49,384 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 48 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:25:49,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 284 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-16 03:25:49,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-16 03:25:49,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-02-16 03:25:49,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 73 states have internal predecessors, (75), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 03:25:49,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2023-02-16 03:25:49,389 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 51 [2023-02-16 03:25:49,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:25:49,390 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2023-02-16 03:25:49,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-16 03:25:49,390 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2023-02-16 03:25:49,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-16 03:25:49,390 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:25:49,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:25:49,399 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 (33)] Ended with exit code 0 [2023-02-16 03:25:49,598 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 [2023-02-16 03:25:49,599 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-02-16 03:25:49,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:25:49,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1450404916, now seen corresponding path program 1 times [2023-02-16 03:25:49,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:25:49,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712780169] [2023-02-16 03:25:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:25:49,600 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 [2023-02-16 03:25:49,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:25:49,601 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) [2023-02-16 03:25:49,602 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 [2023-02-16 03:25:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:25:49,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 64 conjunts are in the unsatisfiable core [2023-02-16 03:25:49,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:25:49,890 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:25:49,890 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 1 case distinctions, treesize of input 12 treesize of output 18 [2023-02-16 03:25:49,903 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-16 03:25:49,904 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 13 treesize of output 13 [2023-02-16 03:25:49,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 03:25:50,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:25:50,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-16 03:25:50,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:25:50,307 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-02-16 03:25:50,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 34 [2023-02-16 03:25:50,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2023-02-16 03:25:50,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-02-16 03:25:50,970 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-02-16 03:25:50,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 11 [2023-02-16 03:25:51,029 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-02-16 03:25:51,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 14 [2023-02-16 03:25:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:25:51,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:25:52,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:25:52,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712780169] [2023-02-16 03:25:52,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712780169] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:25:52,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1808013649] [2023-02-16 03:25:52,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:25:52,770 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-16 03:25:52,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-16 03:25:52,771 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-16 03:25:52,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-02-16 03:25:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:25:53,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 85 conjunts are in the unsatisfiable core [2023-02-16 03:25:53,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:25:53,387 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-16 03:25:53,388 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 13 treesize of output 13 [2023-02-16 03:25:53,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 03:25:53,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-16 03:25:54,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:25:54,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:25:54,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:25:54,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-16 03:25:54,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:25:54,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-16 03:25:54,222 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-02-16 03:25:54,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2023-02-16 03:25:54,261 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-02-16 03:25:54,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2023-02-16 03:25:54,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2023-02-16 03:25:54,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2023-02-16 03:25:55,357 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:25:55,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 22 [2023-02-16 03:25:55,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 10 [2023-02-16 03:25:55,627 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:25:55,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 39 [2023-02-16 03:25:55,634 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-02-16 03:25:55,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2023-02-16 03:25:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:25:55,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:25:59,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:25:59,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:26:02,475 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:26:02,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 45876 treesize of output 44381 [2023-02-16 03:26:02,812 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:26:02,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57947 treesize of output 57639