./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/lis-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/lis-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 04:51:23,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 04:51:23,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 04:51:23,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 04:51:23,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 04:51:23,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 04:51:23,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 04:51:23,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 04:51:23,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 04:51:23,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 04:51:23,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 04:51:23,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 04:51:23,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 04:51:23,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 04:51:23,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 04:51:23,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 04:51:23,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 04:51:23,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 04:51:23,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 04:51:23,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 04:51:23,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 04:51:23,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 04:51:23,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 04:51:23,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 04:51:23,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 04:51:23,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 04:51:23,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 04:51:23,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 04:51:23,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 04:51:23,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 04:51:23,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 04:51:23,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 04:51:23,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 04:51:23,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 04:51:23,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 04:51:23,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 04:51:23,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 04:51:23,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 04:51:23,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 04:51:23,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 04:51:23,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 04:51:23,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 04:51:23,206 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 04:51:23,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 04:51:23,207 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 04:51:23,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 04:51:23,208 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 04:51:23,208 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 04:51:23,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 04:51:23,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 04:51:23,210 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 04:51:23,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 04:51:23,211 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 04:51:23,211 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 04:51:23,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 04:51:23,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 04:51:23,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 04:51:23,212 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 04:51:23,212 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 04:51:23,213 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 04:51:23,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 04:51:23,213 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 04:51:23,213 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 04:51:23,213 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 04:51:23,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 04:51:23,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 04:51:23,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 04:51:23,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 04:51:23,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 04:51:23,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 04:51:23,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 04:51:23,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 04:51:23,215 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 04:51:23,216 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 04:51:23,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 04:51:23,216 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 04:51:23,216 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf [2023-02-18 04:51:23,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 04:51:23,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 04:51:23,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 04:51:23,461 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 04:51:23,461 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 04:51:23,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2023-02-18 04:51:24,599 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 04:51:24,835 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 04:51:24,835 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2023-02-18 04:51:24,848 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c64139bd/01c9d04d20da4def860f416444d4e234/FLAG24b409a87 [2023-02-18 04:51:24,859 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c64139bd/01c9d04d20da4def860f416444d4e234 [2023-02-18 04:51:24,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 04:51:24,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 04:51:24,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 04:51:24,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 04:51:24,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 04:51:24,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:51:24" (1/1) ... [2023-02-18 04:51:24,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9283b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:51:24, skipping insertion in model container [2023-02-18 04:51:24,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:51:24" (1/1) ... [2023-02-18 04:51:24,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 04:51:24,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 04:51:25,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 04:51:25,135 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) [2023-02-18 04:51:25,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6d31b2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:51:25, skipping insertion in model container [2023-02-18 04:51:25,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 04:51:25,137 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-18 04:51:25,138 INFO L158 Benchmark]: Toolchain (without parser) took 274.52ms. Allocated memory is still 209.7MB. Free memory was 161.7MB in the beginning and 150.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 04:51:25,139 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 132.1MB. Free memory was 74.2MB in the beginning and 74.1MB in the end (delta: 42.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 04:51:25,140 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.60ms. Allocated memory is still 209.7MB. Free memory was 161.7MB in the beginning and 150.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 04:51:25,141 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 132.1MB. Free memory was 74.2MB in the beginning and 74.1MB in the end (delta: 42.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.60ms. Allocated memory is still 209.7MB. Free memory was 161.7MB in the beginning and 150.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 515]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/lis-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 04:51:26,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 04:51:26,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 04:51:27,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 04:51:27,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 04:51:27,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 04:51:27,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 04:51:27,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 04:51:27,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 04:51:27,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 04:51:27,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 04:51:27,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 04:51:27,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 04:51:27,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 04:51:27,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 04:51:27,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 04:51:27,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 04:51:27,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 04:51:27,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 04:51:27,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 04:51:27,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 04:51:27,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 04:51:27,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 04:51:27,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 04:51:27,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 04:51:27,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 04:51:27,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 04:51:27,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 04:51:27,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 04:51:27,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 04:51:27,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 04:51:27,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 04:51:27,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 04:51:27,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 04:51:27,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 04:51:27,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 04:51:27,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 04:51:27,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 04:51:27,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 04:51:27,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 04:51:27,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 04:51:27,103 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-18 04:51:27,136 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 04:51:27,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 04:51:27,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 04:51:27,138 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 04:51:27,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 04:51:27,139 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 04:51:27,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 04:51:27,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 04:51:27,140 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 04:51:27,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 04:51:27,141 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 04:51:27,141 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 04:51:27,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 04:51:27,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 04:51:27,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 04:51:27,142 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 04:51:27,142 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 04:51:27,142 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 04:51:27,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 04:51:27,143 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 04:51:27,143 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-18 04:51:27,143 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-18 04:51:27,144 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 04:51:27,144 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 04:51:27,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 04:51:27,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 04:51:27,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 04:51:27,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 04:51:27,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 04:51:27,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 04:51:27,145 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-18 04:51:27,146 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-18 04:51:27,146 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 04:51:27,146 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 04:51:27,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 04:51:27,147 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-18 04:51:27,147 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 04:51:27,147 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf [2023-02-18 04:51:27,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 04:51:27,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 04:51:27,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 04:51:27,470 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 04:51:27,471 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 04:51:27,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2023-02-18 04:51:28,652 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 04:51:28,911 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 04:51:28,921 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2023-02-18 04:51:28,937 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c1baf282/36db57a5c73a41359983a2fd2b979dd5/FLAGe0ce73329 [2023-02-18 04:51:28,952 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c1baf282/36db57a5c73a41359983a2fd2b979dd5 [2023-02-18 04:51:28,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 04:51:28,956 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 04:51:28,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 04:51:28,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 04:51:28,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 04:51:28,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:51:28" (1/1) ... [2023-02-18 04:51:28,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b1b9bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:51:28, skipping insertion in model container [2023-02-18 04:51:28,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:51:28" (1/1) ... [2023-02-18 04:51:28,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 04:51:29,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 04:51:29,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 04:51:29,335 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-18 04:51:29,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 04:51:29,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 04:51:29,392 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 04:51:29,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 04:51:29,478 INFO L208 MainTranslator]: Completed translation [2023-02-18 04:51:29,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:51:29 WrapperNode [2023-02-18 04:51:29,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 04:51:29,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 04:51:29,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 04:51:29,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 04:51:29,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:51:29" (1/1) ... [2023-02-18 04:51:29,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:51:29" (1/1) ... [2023-02-18 04:51:29,535 INFO L138 Inliner]: procedures = 117, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 114 [2023-02-18 04:51:29,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 04:51:29,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 04:51:29,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 04:51:29,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 04:51:29,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:51:29" (1/1) ... [2023-02-18 04:51:29,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:51:29" (1/1) ... [2023-02-18 04:51:29,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:51:29" (1/1) ... [2023-02-18 04:51:29,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:51:29" (1/1) ... [2023-02-18 04:51:29,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:51:29" (1/1) ... [2023-02-18 04:51:29,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:51:29" (1/1) ... [2023-02-18 04:51:29,558 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:51:29" (1/1) ... [2023-02-18 04:51:29,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:51:29" (1/1) ... [2023-02-18 04:51:29,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 04:51:29,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 04:51:29,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 04:51:29,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 04:51:29,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:51:29" (1/1) ... [2023-02-18 04:51:29,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 04:51:29,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:51:29,602 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) [2023-02-18 04:51:29,618 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 [2023-02-18 04:51:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-18 04:51:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 04:51:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 04:51:29,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-18 04:51:29,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 04:51:29,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 04:51:29,801 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 04:51:29,802 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 04:51:30,126 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 04:51:30,132 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 04:51:30,134 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2023-02-18 04:51:30,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:51:30 BoogieIcfgContainer [2023-02-18 04:51:30,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 04:51:30,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 04:51:30,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 04:51:30,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 04:51:30,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 04:51:28" (1/3) ... [2023-02-18 04:51:30,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2321ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:51:30, skipping insertion in model container [2023-02-18 04:51:30,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:51:29" (2/3) ... [2023-02-18 04:51:30,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2321ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:51:30, skipping insertion in model container [2023-02-18 04:51:30,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:51:30" (3/3) ... [2023-02-18 04:51:30,144 INFO L112 eAbstractionObserver]: Analyzing ICFG lis-alloca-1.i [2023-02-18 04:51:30,159 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 04:51:30,160 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2023-02-18 04:51:30,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 04:51:30,216 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;@17075919, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 04:51:30,216 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-02-18 04:51:30,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 41 states have (on average 1.951219512195122) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:30,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 04:51:30,226 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:30,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 04:51:30,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:30,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:30,233 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2023-02-18 04:51:30,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:30,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265442906] [2023-02-18 04:51:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:30,257 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 [2023-02-18 04:51:30,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:30,265 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) [2023-02-18 04:51:30,277 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 [2023-02-18 04:51:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:30,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 04:51:30,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:30,412 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 [2023-02-18 04:51:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:51:30,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:51:30,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:30,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265442906] [2023-02-18 04:51:30,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265442906] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:51:30,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:51:30,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 04:51:30,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459350363] [2023-02-18 04:51:30,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:51:30,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 04:51:30,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:30,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 04:51:30,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 04:51:30,461 INFO L87 Difference]: Start difference. First operand has 67 states, 41 states have (on average 1.951219512195122) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:30,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:30,579 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2023-02-18 04:51:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 04:51:30,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-18 04:51:30,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:30,588 INFO L225 Difference]: With dead ends: 66 [2023-02-18 04:51:30,588 INFO L226 Difference]: Without dead ends: 64 [2023-02-18 04:51:30,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 04:51:30,594 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 62 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:30,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 51 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 04:51:30,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-18 04:51:30,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-02-18 04:51:30,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.8) internal successors, (72), 63 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:30,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2023-02-18 04:51:30,629 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 6 [2023-02-18 04:51:30,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:30,630 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2023-02-18 04:51:30,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:30,630 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2023-02-18 04:51:30,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 04:51:30,631 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:30,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 04:51:30,644 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 [2023-02-18 04:51:30,840 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 [2023-02-18 04:51:30,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:30,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:30,841 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2023-02-18 04:51:30,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:30,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559352056] [2023-02-18 04:51:30,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:30,842 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 [2023-02-18 04:51:30,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:30,844 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) [2023-02-18 04:51:30,846 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 [2023-02-18 04:51:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:30,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 04:51:30,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:30,950 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 8 treesize of output 7 [2023-02-18 04:51:30,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:51:30,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:51:30,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:30,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559352056] [2023-02-18 04:51:30,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559352056] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:51:30,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:51:30,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 04:51:30,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005363165] [2023-02-18 04:51:30,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:51:30,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 04:51:30,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:30,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 04:51:30,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 04:51:30,964 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:31,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:31,230 INFO L93 Difference]: Finished difference Result 129 states and 144 transitions. [2023-02-18 04:51:31,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 04:51:31,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-18 04:51:31,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:31,233 INFO L225 Difference]: With dead ends: 129 [2023-02-18 04:51:31,233 INFO L226 Difference]: Without dead ends: 129 [2023-02-18 04:51:31,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:51:31,241 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 74 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:31,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 275 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 04:51:31,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-18 04:51:31,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 67. [2023-02-18 04:51:31,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.744186046511628) internal successors, (75), 66 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:31,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2023-02-18 04:51:31,249 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 6 [2023-02-18 04:51:31,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:31,250 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2023-02-18 04:51:31,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:31,250 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2023-02-18 04:51:31,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 04:51:31,251 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:31,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 04:51:31,263 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 [2023-02-18 04:51:31,459 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 [2023-02-18 04:51:31,460 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:31,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:31,461 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2023-02-18 04:51:31,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:31,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559788418] [2023-02-18 04:51:31,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:31,462 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 [2023-02-18 04:51:31,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:31,463 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) [2023-02-18 04:51:31,466 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 [2023-02-18 04:51:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:31,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 04:51:31,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:31,521 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 8 treesize of output 7 [2023-02-18 04:51:31,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:51:31,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:51:31,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:31,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559788418] [2023-02-18 04:51:31,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559788418] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:51:31,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:51:31,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 04:51:31,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777871455] [2023-02-18 04:51:31,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:51:31,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 04:51:31,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:31,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 04:51:31,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 04:51:31,547 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:31,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:31,759 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2023-02-18 04:51:31,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 04:51:31,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-18 04:51:31,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:31,761 INFO L225 Difference]: With dead ends: 71 [2023-02-18 04:51:31,761 INFO L226 Difference]: Without dead ends: 71 [2023-02-18 04:51:31,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:51:31,762 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 74 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:31,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 109 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 04:51:31,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-02-18 04:51:31,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2023-02-18 04:51:31,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 65 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:31,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2023-02-18 04:51:31,767 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 6 [2023-02-18 04:51:31,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:31,768 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2023-02-18 04:51:31,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:31,768 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2023-02-18 04:51:31,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 04:51:31,768 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:31,769 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:51:31,778 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 [2023-02-18 04:51:31,969 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 [2023-02-18 04:51:31,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:31,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:31,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2023-02-18 04:51:31,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:31,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169390194] [2023-02-18 04:51:31,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:31,971 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 [2023-02-18 04:51:31,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:31,972 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) [2023-02-18 04:51:31,975 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 [2023-02-18 04:51:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:32,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 04:51:32,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:32,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:51:32,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:51:32,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:51:32,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:32,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169390194] [2023-02-18 04:51:32,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169390194] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:51:32,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:51:32,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-18 04:51:32,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950073858] [2023-02-18 04:51:32,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:51:32,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 04:51:32,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:32,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 04:51:32,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-18 04:51:32,066 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:32,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:32,147 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2023-02-18 04:51:32,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 04:51:32,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 04:51:32,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:32,149 INFO L225 Difference]: With dead ends: 127 [2023-02-18 04:51:32,150 INFO L226 Difference]: Without dead ends: 127 [2023-02-18 04:51:32,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-18 04:51:32,151 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 247 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:32,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 258 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 04:51:32,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-02-18 04:51:32,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 72. [2023-02-18 04:51:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 71 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2023-02-18 04:51:32,157 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 10 [2023-02-18 04:51:32,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:32,157 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2023-02-18 04:51:32,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:32,157 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2023-02-18 04:51:32,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 04:51:32,158 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:32,158 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:51:32,171 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 [2023-02-18 04:51:32,369 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 [2023-02-18 04:51:32,369 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:32,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:32,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2023-02-18 04:51:32,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:32,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614214707] [2023-02-18 04:51:32,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:32,371 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 [2023-02-18 04:51:32,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:32,372 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) [2023-02-18 04:51:32,379 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 [2023-02-18 04:51:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:32,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 04:51:32,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:32,441 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 8 treesize of output 7 [2023-02-18 04:51:32,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:51:32,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:51:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:51:32,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:32,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614214707] [2023-02-18 04:51:32,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614214707] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:51:32,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:51:32,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-02-18 04:51:32,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391124278] [2023-02-18 04:51:32,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:51:32,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 04:51:32,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:32,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 04:51:32,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-18 04:51:32,649 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:33,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:33,507 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2023-02-18 04:51:33,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 04:51:33,508 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 04:51:33,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:33,509 INFO L225 Difference]: With dead ends: 140 [2023-02-18 04:51:33,509 INFO L226 Difference]: Without dead ends: 140 [2023-02-18 04:51:33,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2023-02-18 04:51:33,510 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 339 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:33,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 208 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-18 04:51:33,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-02-18 04:51:33,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 84. [2023-02-18 04:51:33,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 60 states have (on average 1.5833333333333333) internal successors, (95), 83 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:33,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2023-02-18 04:51:33,515 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 10 [2023-02-18 04:51:33,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:33,516 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2023-02-18 04:51:33,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:33,516 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2023-02-18 04:51:33,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 04:51:33,516 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:33,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:51:33,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-18 04:51:33,724 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 [2023-02-18 04:51:33,725 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:33,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:33,725 INFO L85 PathProgramCache]: Analyzing trace with hash -680998152, now seen corresponding path program 1 times [2023-02-18 04:51:33,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:33,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002437269] [2023-02-18 04:51:33,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:33,726 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 [2023-02-18 04:51:33,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:33,728 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) [2023-02-18 04:51:33,728 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 [2023-02-18 04:51:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:33,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 04:51:33,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:33,799 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 04:51:33,799 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 19 treesize of output 32 [2023-02-18 04:51:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:51:33,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:51:33,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:33,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002437269] [2023-02-18 04:51:33,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002437269] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:51:33,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:51:33,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 04:51:33,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604916686] [2023-02-18 04:51:33,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:51:33,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 04:51:33,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:33,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 04:51:33,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 04:51:33,811 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:33,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:33,906 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2023-02-18 04:51:33,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 04:51:33,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-18 04:51:33,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:33,915 INFO L225 Difference]: With dead ends: 77 [2023-02-18 04:51:33,915 INFO L226 Difference]: Without dead ends: 77 [2023-02-18 04:51:33,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 04:51:33,916 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 49 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:33,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 49 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 04:51:33,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-18 04:51:33,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-02-18 04:51:33,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 76 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:33,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2023-02-18 04:51:33,921 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 12 [2023-02-18 04:51:33,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:33,922 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2023-02-18 04:51:33,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:33,922 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2023-02-18 04:51:33,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 04:51:33,922 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:33,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:51:33,936 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 [2023-02-18 04:51:34,132 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 [2023-02-18 04:51:34,132 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:34,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:34,133 INFO L85 PathProgramCache]: Analyzing trace with hash -680998151, now seen corresponding path program 1 times [2023-02-18 04:51:34,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:34,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473001227] [2023-02-18 04:51:34,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:34,133 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 [2023-02-18 04:51:34,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:34,135 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) [2023-02-18 04:51:34,137 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 [2023-02-18 04:51:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:34,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 04:51:34,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:34,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 04:51:34,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-02-18 04:51:34,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 04:51:34,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:51:34,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:51:34,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:34,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473001227] [2023-02-18 04:51:34,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473001227] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:51:34,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:51:34,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 04:51:34,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361634202] [2023-02-18 04:51:34,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:51:34,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 04:51:34,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:34,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 04:51:34,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 04:51:34,219 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:34,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:34,384 INFO L93 Difference]: Finished difference Result 132 states and 150 transitions. [2023-02-18 04:51:34,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 04:51:34,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-18 04:51:34,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:34,387 INFO L225 Difference]: With dead ends: 132 [2023-02-18 04:51:34,388 INFO L226 Difference]: Without dead ends: 132 [2023-02-18 04:51:34,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:51:34,388 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 67 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:34,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 139 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 04:51:34,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-02-18 04:51:34,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 80. [2023-02-18 04:51:34,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 79 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:34,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2023-02-18 04:51:34,393 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 12 [2023-02-18 04:51:34,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:34,394 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2023-02-18 04:51:34,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2023-02-18 04:51:34,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 04:51:34,394 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:34,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:51:34,409 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 [2023-02-18 04:51:34,595 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 [2023-02-18 04:51:34,595 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:34,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:34,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1074025161, now seen corresponding path program 1 times [2023-02-18 04:51:34,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:34,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926131095] [2023-02-18 04:51:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:34,596 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 [2023-02-18 04:51:34,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:34,597 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) [2023-02-18 04:51:34,598 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 [2023-02-18 04:51:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:34,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 04:51:34,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:34,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 04:51:34,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-02-18 04:51:34,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 04:51:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:51:34,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:51:34,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:34,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926131095] [2023-02-18 04:51:34,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926131095] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:51:34,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:51:34,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 04:51:34,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762489936] [2023-02-18 04:51:34,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:51:34,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 04:51:34,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:34,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 04:51:34,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:51:34,698 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:34,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:34,942 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2023-02-18 04:51:34,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 04:51:34,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-18 04:51:34,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:34,943 INFO L225 Difference]: With dead ends: 87 [2023-02-18 04:51:34,943 INFO L226 Difference]: Without dead ends: 87 [2023-02-18 04:51:34,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 04:51:34,944 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 73 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:34,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 104 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 04:51:34,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-18 04:51:34,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2023-02-18 04:51:34,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 62 states have (on average 1.467741935483871) internal successors, (91), 78 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:34,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2023-02-18 04:51:34,952 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 12 [2023-02-18 04:51:34,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:34,952 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2023-02-18 04:51:34,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:34,953 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2023-02-18 04:51:34,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 04:51:34,955 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:34,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:51:34,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-02-18 04:51:35,161 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 [2023-02-18 04:51:35,161 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:35,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:35,161 INFO L85 PathProgramCache]: Analyzing trace with hash 363893777, now seen corresponding path program 1 times [2023-02-18 04:51:35,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:35,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206055282] [2023-02-18 04:51:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:35,162 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 [2023-02-18 04:51:35,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:35,164 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) [2023-02-18 04:51:35,166 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 [2023-02-18 04:51:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:35,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 04:51:35,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:35,235 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 04:51:35,236 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 1 case distinctions, treesize of input 9 treesize of output 25 [2023-02-18 04:51:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:51:35,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:51:35,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:35,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206055282] [2023-02-18 04:51:35,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206055282] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:51:35,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:51:35,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 04:51:35,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276334998] [2023-02-18 04:51:35,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:51:35,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 04:51:35,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:35,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 04:51:35,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 04:51:35,243 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:35,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:35,318 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2023-02-18 04:51:35,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 04:51:35,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-18 04:51:35,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:35,319 INFO L225 Difference]: With dead ends: 77 [2023-02-18 04:51:35,319 INFO L226 Difference]: Without dead ends: 77 [2023-02-18 04:51:35,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 04:51:35,320 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 46 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:35,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 54 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 04:51:35,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-18 04:51:35,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-02-18 04:51:35,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.435483870967742) internal successors, (89), 76 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:35,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2023-02-18 04:51:35,323 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 13 [2023-02-18 04:51:35,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:35,323 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2023-02-18 04:51:35,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:35,324 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2023-02-18 04:51:35,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 04:51:35,324 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:35,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:51:35,333 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 (10)] Ended with exit code 0 [2023-02-18 04:51:35,524 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 [2023-02-18 04:51:35,525 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:35,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:35,525 INFO L85 PathProgramCache]: Analyzing trace with hash 363893778, now seen corresponding path program 1 times [2023-02-18 04:51:35,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:35,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735145872] [2023-02-18 04:51:35,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:35,526 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 [2023-02-18 04:51:35,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:35,527 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) [2023-02-18 04:51:35,528 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 [2023-02-18 04:51:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:35,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 04:51:35,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:35,600 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 04:51:35,600 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 1 case distinctions, treesize of input 11 treesize of output 29 [2023-02-18 04:51:35,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:51:35,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:51:35,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:35,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735145872] [2023-02-18 04:51:35,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735145872] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:51:35,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:51:35,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 04:51:35,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590842695] [2023-02-18 04:51:35,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:51:35,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 04:51:35,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:35,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 04:51:35,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 04:51:35,608 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:35,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:35,756 INFO L93 Difference]: Finished difference Result 128 states and 147 transitions. [2023-02-18 04:51:35,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 04:51:35,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-18 04:51:35,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:35,758 INFO L225 Difference]: With dead ends: 128 [2023-02-18 04:51:35,758 INFO L226 Difference]: Without dead ends: 128 [2023-02-18 04:51:35,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:51:35,758 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 60 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:35,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 133 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 04:51:35,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-02-18 04:51:35,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 81. [2023-02-18 04:51:35,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 80 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:35,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2023-02-18 04:51:35,762 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 13 [2023-02-18 04:51:35,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:35,762 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2023-02-18 04:51:35,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:35,762 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2023-02-18 04:51:35,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 04:51:35,763 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:35,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:51:35,773 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 [2023-02-18 04:51:35,973 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 [2023-02-18 04:51:35,973 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:35,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:35,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958356, now seen corresponding path program 1 times [2023-02-18 04:51:35,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:35,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330097407] [2023-02-18 04:51:35,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:35,974 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 [2023-02-18 04:51:35,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:35,975 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) [2023-02-18 04:51:35,976 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 [2023-02-18 04:51:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:36,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 04:51:36,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:36,044 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 04:51:36,044 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 1 case distinctions, treesize of input 11 treesize of output 29 [2023-02-18 04:51:36,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:51:36,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:51:36,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:36,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330097407] [2023-02-18 04:51:36,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330097407] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:51:36,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:51:36,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 04:51:36,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252525579] [2023-02-18 04:51:36,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:51:36,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 04:51:36,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:36,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 04:51:36,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:51:36,068 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:36,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:36,278 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2023-02-18 04:51:36,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 04:51:36,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-18 04:51:36,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:36,279 INFO L225 Difference]: With dead ends: 84 [2023-02-18 04:51:36,280 INFO L226 Difference]: Without dead ends: 84 [2023-02-18 04:51:36,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 04:51:36,280 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 64 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:36,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 99 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 04:51:36,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-02-18 04:51:36,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 78. [2023-02-18 04:51:36,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 77 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2023-02-18 04:51:36,284 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 13 [2023-02-18 04:51:36,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:36,284 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2023-02-18 04:51:36,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2023-02-18 04:51:36,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 04:51:36,285 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:36,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:51:36,296 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 (12)] Forceful destruction successful, exit code 0 [2023-02-18 04:51:36,494 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 [2023-02-18 04:51:36,495 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:36,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:36,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1808065813, now seen corresponding path program 1 times [2023-02-18 04:51:36,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:36,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564269375] [2023-02-18 04:51:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:36,496 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 [2023-02-18 04:51:36,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:36,497 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) [2023-02-18 04:51:36,497 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 [2023-02-18 04:51:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:36,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 04:51:36,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:36,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:51:36,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:51:36,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:36,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564269375] [2023-02-18 04:51:36,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564269375] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:51:36,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:51:36,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 04:51:36,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253761194] [2023-02-18 04:51:36,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:51:36,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 04:51:36,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:36,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 04:51:36,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 04:51:36,606 INFO L87 Difference]: Start difference. First operand 78 states and 90 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:36,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:36,782 INFO L93 Difference]: Finished difference Result 128 states and 146 transitions. [2023-02-18 04:51:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 04:51:36,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-18 04:51:36,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:36,784 INFO L225 Difference]: With dead ends: 128 [2023-02-18 04:51:36,784 INFO L226 Difference]: Without dead ends: 128 [2023-02-18 04:51:36,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:51:36,785 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 59 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:36,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 208 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 04:51:36,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-02-18 04:51:36,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 80. [2023-02-18 04:51:36,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 79 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:36,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2023-02-18 04:51:36,788 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 15 [2023-02-18 04:51:36,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:36,788 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2023-02-18 04:51:36,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2023-02-18 04:51:36,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 04:51:36,789 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:36,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:51:36,805 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 (13)] Forceful destruction successful, exit code 0 [2023-02-18 04:51:36,989 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 [2023-02-18 04:51:36,990 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:36,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:36,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1221259799, now seen corresponding path program 1 times [2023-02-18 04:51:36,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:36,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167746581] [2023-02-18 04:51:36,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:36,991 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 [2023-02-18 04:51:36,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:36,992 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) [2023-02-18 04:51:36,994 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 [2023-02-18 04:51:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:37,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 04:51:37,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:37,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:51:37,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:51:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:51:37,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:37,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167746581] [2023-02-18 04:51:37,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167746581] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:51:37,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:51:37,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-02-18 04:51:37,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510439096] [2023-02-18 04:51:37,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:51:37,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 04:51:37,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:37,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 04:51:37,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-02-18 04:51:37,120 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:37,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:37,448 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2023-02-18 04:51:37,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 04:51:37,449 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-18 04:51:37,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:37,450 INFO L225 Difference]: With dead ends: 130 [2023-02-18 04:51:37,450 INFO L226 Difference]: Without dead ends: 130 [2023-02-18 04:51:37,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-02-18 04:51:37,451 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 437 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:37,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 170 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 04:51:37,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-18 04:51:37,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2023-02-18 04:51:37,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 77 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:37,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2023-02-18 04:51:37,453 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 15 [2023-02-18 04:51:37,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:37,453 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2023-02-18 04:51:37,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:37,454 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2023-02-18 04:51:37,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 04:51:37,454 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:37,454 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:51:37,462 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 (14)] Ended with exit code 0 [2023-02-18 04:51:37,654 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 [2023-02-18 04:51:37,655 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:37,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:37,655 INFO L85 PathProgramCache]: Analyzing trace with hash 262068158, now seen corresponding path program 1 times [2023-02-18 04:51:37,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:37,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908784595] [2023-02-18 04:51:37,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:37,656 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 [2023-02-18 04:51:37,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:37,657 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) [2023-02-18 04:51:37,658 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 [2023-02-18 04:51:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:37,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 04:51:37,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:37,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:51:37,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:51:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:51:37,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:37,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908784595] [2023-02-18 04:51:37,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908784595] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:51:37,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:51:37,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-18 04:51:37,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013238190] [2023-02-18 04:51:37,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:51:37,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 04:51:37,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:37,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 04:51:37,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-18 04:51:37,778 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:37,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:37,961 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2023-02-18 04:51:37,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 04:51:37,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-18 04:51:37,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:37,963 INFO L225 Difference]: With dead ends: 100 [2023-02-18 04:51:37,963 INFO L226 Difference]: Without dead ends: 100 [2023-02-18 04:51:37,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-18 04:51:37,964 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 53 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:37,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 225 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 04:51:37,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-18 04:51:37,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2023-02-18 04:51:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 79 states have (on average 1.3670886075949367) internal successors, (108), 93 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:37,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2023-02-18 04:51:37,966 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 16 [2023-02-18 04:51:37,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:37,967 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2023-02-18 04:51:37,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:37,967 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2023-02-18 04:51:37,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 04:51:37,967 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:37,967 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:51:37,981 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 [2023-02-18 04:51:38,174 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 [2023-02-18 04:51:38,174 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:38,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:38,174 INFO L85 PathProgramCache]: Analyzing trace with hash -749049092, now seen corresponding path program 1 times [2023-02-18 04:51:38,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:38,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69716056] [2023-02-18 04:51:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:38,175 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 [2023-02-18 04:51:38,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:38,176 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) [2023-02-18 04:51:38,177 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 [2023-02-18 04:51:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:38,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 04:51:38,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:51:38,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:51:38,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:51:38,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:38,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69716056] [2023-02-18 04:51:38,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69716056] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:51:38,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:51:38,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-02-18 04:51:38,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149489987] [2023-02-18 04:51:38,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:51:38,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 04:51:38,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:38,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 04:51:38,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-02-18 04:51:38,371 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:38,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:38,701 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2023-02-18 04:51:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 04:51:38,702 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-18 04:51:38,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:38,702 INFO L225 Difference]: With dead ends: 116 [2023-02-18 04:51:38,702 INFO L226 Difference]: Without dead ends: 116 [2023-02-18 04:51:38,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-02-18 04:51:38,703 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 172 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:38,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 377 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 04:51:38,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-18 04:51:38,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 94. [2023-02-18 04:51:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 79 states have (on average 1.3670886075949367) internal successors, (108), 93 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:38,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2023-02-18 04:51:38,706 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 16 [2023-02-18 04:51:38,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:38,706 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2023-02-18 04:51:38,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:38,706 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2023-02-18 04:51:38,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 04:51:38,706 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:38,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:51:38,717 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 [2023-02-18 04:51:38,913 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 [2023-02-18 04:51:38,913 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:38,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:38,914 INFO L85 PathProgramCache]: Analyzing trace with hash -302012765, now seen corresponding path program 1 times [2023-02-18 04:51:38,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:38,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195362752] [2023-02-18 04:51:38,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:38,914 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 [2023-02-18 04:51:38,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:38,916 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) [2023-02-18 04:51:38,919 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 [2023-02-18 04:51:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:38,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 04:51:38,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:39,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:51:39,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:51:39,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2023-02-18 04:51:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:51:39,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:39,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195362752] [2023-02-18 04:51:39,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195362752] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:51:39,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:51:39,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-02-18 04:51:39,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195698572] [2023-02-18 04:51:39,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:51:39,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 04:51:39,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:39,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 04:51:39,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-18 04:51:39,094 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:39,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:39,642 INFO L93 Difference]: Finished difference Result 151 states and 172 transitions. [2023-02-18 04:51:39,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 04:51:39,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-18 04:51:39,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:39,643 INFO L225 Difference]: With dead ends: 151 [2023-02-18 04:51:39,643 INFO L226 Difference]: Without dead ends: 151 [2023-02-18 04:51:39,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-02-18 04:51:39,644 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 235 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:39,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 157 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 04:51:39,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-02-18 04:51:39,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 105. [2023-02-18 04:51:39,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 91 states have (on average 1.3846153846153846) internal successors, (126), 104 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:39,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions. [2023-02-18 04:51:39,648 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 20 [2023-02-18 04:51:39,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:39,648 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions. [2023-02-18 04:51:39,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:39,648 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions. [2023-02-18 04:51:39,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 04:51:39,649 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:39,649 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:51:39,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-02-18 04:51:39,857 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 [2023-02-18 04:51:39,857 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:39,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:39,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1581646975, now seen corresponding path program 2 times [2023-02-18 04:51:39,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:39,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388108988] [2023-02-18 04:51:39,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 04:51:39,858 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 [2023-02-18 04:51:39,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:39,859 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) [2023-02-18 04:51:39,859 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 [2023-02-18 04:51:39,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 04:51:39,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:51:39,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 04:51:39,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:39,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 04:51:39,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-02-18 04:51:39,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 04:51:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 04:51:39,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:51:40,060 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 04:51:40,091 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 04:51:40,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:40,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388108988] [2023-02-18 04:51:40,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388108988] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:51:40,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:51:40,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-02-18 04:51:40,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868875083] [2023-02-18 04:51:40,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:51:40,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 04:51:40,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:40,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 04:51:40,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-18 04:51:40,094 INFO L87 Difference]: Start difference. First operand 105 states and 126 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:41,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:41,099 INFO L93 Difference]: Finished difference Result 237 states and 293 transitions. [2023-02-18 04:51:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 04:51:41,100 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-18 04:51:41,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:41,101 INFO L225 Difference]: With dead ends: 237 [2023-02-18 04:51:41,101 INFO L226 Difference]: Without dead ends: 237 [2023-02-18 04:51:41,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2023-02-18 04:51:41,102 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 479 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:41,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 133 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-18 04:51:41,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-02-18 04:51:41,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 169. [2023-02-18 04:51:41,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 155 states have (on average 1.4451612903225806) internal successors, (224), 168 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:41,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 224 transitions. [2023-02-18 04:51:41,106 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 224 transitions. Word has length 20 [2023-02-18 04:51:41,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:41,106 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 224 transitions. [2023-02-18 04:51:41,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:41,106 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 224 transitions. [2023-02-18 04:51:41,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 04:51:41,107 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:41,107 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:51:41,117 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 [2023-02-18 04:51:41,307 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 [2023-02-18 04:51:41,308 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:41,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:41,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1786415948, now seen corresponding path program 1 times [2023-02-18 04:51:41,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:41,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574936130] [2023-02-18 04:51:41,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:41,308 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 [2023-02-18 04:51:41,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:41,309 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) [2023-02-18 04:51:41,310 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 [2023-02-18 04:51:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:41,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 04:51:41,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:41,407 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 04:51:41,407 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 1 case distinctions, treesize of input 11 treesize of output 29 [2023-02-18 04:51:41,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 04:51:41,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:51:41,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 04:51:41,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:41,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574936130] [2023-02-18 04:51:41,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574936130] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:51:41,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:51:41,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-02-18 04:51:41,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833853431] [2023-02-18 04:51:41,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:51:41,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 04:51:41,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:41,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 04:51:41,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-02-18 04:51:41,662 INFO L87 Difference]: Start difference. First operand 169 states and 224 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:42,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:42,831 INFO L93 Difference]: Finished difference Result 219 states and 260 transitions. [2023-02-18 04:51:42,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 04:51:42,832 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-18 04:51:42,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:42,833 INFO L225 Difference]: With dead ends: 219 [2023-02-18 04:51:42,833 INFO L226 Difference]: Without dead ends: 219 [2023-02-18 04:51:42,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2023-02-18 04:51:42,833 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 639 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:42,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 141 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-18 04:51:42,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-02-18 04:51:42,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 184. [2023-02-18 04:51:42,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 170 states have (on average 1.4294117647058824) internal successors, (243), 183 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:42,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 243 transitions. [2023-02-18 04:51:42,838 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 243 transitions. Word has length 21 [2023-02-18 04:51:42,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:42,838 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 243 transitions. [2023-02-18 04:51:42,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:42,838 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 243 transitions. [2023-02-18 04:51:42,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-18 04:51:42,839 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:42,839 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2023-02-18 04:51:42,851 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 [2023-02-18 04:51:43,048 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 [2023-02-18 04:51:43,049 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:43,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:43,049 INFO L85 PathProgramCache]: Analyzing trace with hash 302966996, now seen corresponding path program 2 times [2023-02-18 04:51:43,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:43,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280145730] [2023-02-18 04:51:43,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 04:51:43,050 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 [2023-02-18 04:51:43,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:43,051 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) [2023-02-18 04:51:43,053 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 [2023-02-18 04:51:43,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 04:51:43,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:51:43,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 04:51:43,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:43,131 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 8 treesize of output 7 [2023-02-18 04:51:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:51:43,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:51:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:51:43,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:43,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280145730] [2023-02-18 04:51:43,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280145730] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:51:43,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:51:43,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-18 04:51:43,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106105097] [2023-02-18 04:51:43,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:51:43,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-18 04:51:43,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:43,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-18 04:51:43,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2023-02-18 04:51:43,593 INFO L87 Difference]: Start difference. First operand 184 states and 243 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:46,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:46,630 INFO L93 Difference]: Finished difference Result 633 states and 856 transitions. [2023-02-18 04:51:46,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-18 04:51:46,631 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-18 04:51:46,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:46,633 INFO L225 Difference]: With dead ends: 633 [2023-02-18 04:51:46,633 INFO L226 Difference]: Without dead ends: 633 [2023-02-18 04:51:46,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=327, Invalid=665, Unknown=0, NotChecked=0, Total=992 [2023-02-18 04:51:46,634 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 584 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:46,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 968 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-18 04:51:46,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-02-18 04:51:46,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 208. [2023-02-18 04:51:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 194 states have (on average 1.407216494845361) internal successors, (273), 207 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:46,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 273 transitions. [2023-02-18 04:51:46,643 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 273 transitions. Word has length 22 [2023-02-18 04:51:46,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:46,643 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 273 transitions. [2023-02-18 04:51:46,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:46,644 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 273 transitions. [2023-02-18 04:51:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-18 04:51:46,645 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:46,645 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:51:46,659 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 [2023-02-18 04:51:46,855 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 [2023-02-18 04:51:46,855 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:46,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:46,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1242696241, now seen corresponding path program 1 times [2023-02-18 04:51:46,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:46,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494515101] [2023-02-18 04:51:46,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:46,857 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 [2023-02-18 04:51:46,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:46,858 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) [2023-02-18 04:51:46,861 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 [2023-02-18 04:51:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:46,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 04:51:46,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:46,951 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 8 treesize of output 7 [2023-02-18 04:51:46,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-02-18 04:51:47,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:51:47,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:51:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:51:47,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:51:47,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494515101] [2023-02-18 04:51:47,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494515101] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:51:47,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:51:47,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-02-18 04:51:47,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528687892] [2023-02-18 04:51:47,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:51:47,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-18 04:51:47,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:51:47,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-18 04:51:47,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-02-18 04:51:47,202 INFO L87 Difference]: Start difference. First operand 208 states and 273 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:47,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:51:47,820 INFO L93 Difference]: Finished difference Result 245 states and 308 transitions. [2023-02-18 04:51:47,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-18 04:51:47,821 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-18 04:51:47,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:51:47,822 INFO L225 Difference]: With dead ends: 245 [2023-02-18 04:51:47,822 INFO L226 Difference]: Without dead ends: 245 [2023-02-18 04:51:47,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2023-02-18 04:51:47,823 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 539 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 04:51:47,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 363 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 04:51:47,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-02-18 04:51:47,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 155. [2023-02-18 04:51:47,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 141 states have (on average 1.3687943262411348) internal successors, (193), 154 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 193 transitions. [2023-02-18 04:51:47,827 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 193 transitions. Word has length 23 [2023-02-18 04:51:47,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:51:47,827 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 193 transitions. [2023-02-18 04:51:47,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:51:47,828 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 193 transitions. [2023-02-18 04:51:47,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-18 04:51:47,828 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:51:47,828 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] [2023-02-18 04:51:47,840 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 [2023-02-18 04:51:48,037 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 [2023-02-18 04:51:48,037 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:51:48,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:51:48,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1547664583, now seen corresponding path program 1 times [2023-02-18 04:51:48,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:51:48,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602368484] [2023-02-18 04:51:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:51:48,038 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 [2023-02-18 04:51:48,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:51:48,039 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) [2023-02-18 04:51:48,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-02-18 04:51:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:51:48,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-18 04:51:48,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:51:48,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 04:51:48,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 04:51:48,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 04:51:48,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 04:51:48,151 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 04:51:48,152 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 04:51:48,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 55 [2023-02-18 04:51:48,175 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 61 treesize of output 57 [2023-02-18 04:51:48,216 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 04:51:48,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 26 [2023-02-18 04:51:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:51:48,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:51:48,387 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 04:51:48,387 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 04:51:48,388 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 04:51:48,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 04:51:48,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 04:51:48,405 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 04:51:48,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 231 treesize of output 118 [2023-02-18 04:51:48,410 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 04:51:48,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 154 treesize of output 382 [2023-02-18 04:51:50,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 9 [2023-02-18 04:52:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:52:07,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:52:07,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602368484] [2023-02-18 04:52:07,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602368484] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:52:07,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:52:07,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-18 04:52:07,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435237348] [2023-02-18 04:52:07,460 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:52:07,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 04:52:07,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:52:07,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 04:52:07,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=99, Unknown=3, NotChecked=0, Total=132 [2023-02-18 04:52:07,462 INFO L87 Difference]: Start difference. First operand 155 states and 193 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:10,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:52:10,463 INFO L93 Difference]: Finished difference Result 197 states and 246 transitions. [2023-02-18 04:52:10,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 04:52:10,464 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-18 04:52:10,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:52:10,465 INFO L225 Difference]: With dead ends: 197 [2023-02-18 04:52:10,465 INFO L226 Difference]: Without dead ends: 197 [2023-02-18 04:52:10,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=145, Unknown=3, NotChecked=0, Total=210 [2023-02-18 04:52:10,465 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 134 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-02-18 04:52:10,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 309 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-02-18 04:52:10,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-02-18 04:52:10,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 179. [2023-02-18 04:52:10,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 165 states have (on average 1.4181818181818182) internal successors, (234), 178 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:10,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2023-02-18 04:52:10,469 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 26 [2023-02-18 04:52:10,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:52:10,469 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2023-02-18 04:52:10,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:10,470 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2023-02-18 04:52:10,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-18 04:52:10,470 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:52:10,470 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:52:10,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-02-18 04:52:10,685 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 [2023-02-18 04:52:10,685 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:52:10,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:52:10,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1090844182, now seen corresponding path program 2 times [2023-02-18 04:52:10,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:52:10,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304731697] [2023-02-18 04:52:10,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 04:52:10,686 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 [2023-02-18 04:52:10,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:52:10,687 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) [2023-02-18 04:52:10,688 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 [2023-02-18 04:52:10,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 04:52:10,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:52:10,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 04:52:10,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:52:10,759 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 [2023-02-18 04:52:10,769 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 04:52:10,769 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 4 case distinctions, treesize of input 20 treesize of output 74 [2023-02-18 04:52:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 04:52:11,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:52:11,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:52:11,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304731697] [2023-02-18 04:52:11,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304731697] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:52:11,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:52:11,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 04:52:11,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215137685] [2023-02-18 04:52:11,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:52:11,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 04:52:11,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:52:11,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 04:52:11,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 04:52:11,037 INFO L87 Difference]: Start difference. First operand 179 states and 234 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:11,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:52:11,158 INFO L93 Difference]: Finished difference Result 177 states and 224 transitions. [2023-02-18 04:52:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 04:52:11,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-18 04:52:11,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:52:11,159 INFO L225 Difference]: With dead ends: 177 [2023-02-18 04:52:11,159 INFO L226 Difference]: Without dead ends: 177 [2023-02-18 04:52:11,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:52:11,160 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 83 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:52:11,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 51 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 04:52:11,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-02-18 04:52:11,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2023-02-18 04:52:11,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 165 states have (on average 1.3575757575757577) internal successors, (224), 176 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 224 transitions. [2023-02-18 04:52:11,164 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 224 transitions. Word has length 27 [2023-02-18 04:52:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:52:11,164 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 224 transitions. [2023-02-18 04:52:11,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:11,164 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 224 transitions. [2023-02-18 04:52:11,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-18 04:52:11,165 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:52:11,165 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:52:11,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-02-18 04:52:11,373 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 [2023-02-18 04:52:11,373 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:52:11,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:52:11,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1090844181, now seen corresponding path program 1 times [2023-02-18 04:52:11,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:52:11,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106940067] [2023-02-18 04:52:11,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:52:11,374 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 [2023-02-18 04:52:11,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:52:11,375 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) [2023-02-18 04:52:11,377 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 [2023-02-18 04:52:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:52:11,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-18 04:52:11,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:52:11,512 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 8 treesize of output 7 [2023-02-18 04:52:11,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 04:52:11,547 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 04:52:11,547 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 1 case distinctions, treesize of input 34 treesize of output 70 [2023-02-18 04:52:11,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 04:52:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 04:52:12,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:52:12,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 04:52:12,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 04:52:12,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:52:12,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106940067] [2023-02-18 04:52:12,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106940067] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:52:12,421 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:52:12,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2023-02-18 04:52:12,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532572497] [2023-02-18 04:52:12,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:52:12,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 04:52:12,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:52:12,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 04:52:12,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-02-18 04:52:12,423 INFO L87 Difference]: Start difference. First operand 177 states and 224 transitions. Second operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:13,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:52:13,560 INFO L93 Difference]: Finished difference Result 243 states and 303 transitions. [2023-02-18 04:52:13,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 04:52:13,561 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-18 04:52:13,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:52:13,562 INFO L225 Difference]: With dead ends: 243 [2023-02-18 04:52:13,562 INFO L226 Difference]: Without dead ends: 243 [2023-02-18 04:52:13,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-02-18 04:52:13,563 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 563 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:52:13,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 181 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-18 04:52:13,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-02-18 04:52:13,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 182. [2023-02-18 04:52:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 170 states have (on average 1.3470588235294119) internal successors, (229), 181 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:13,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 229 transitions. [2023-02-18 04:52:13,567 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 229 transitions. Word has length 27 [2023-02-18 04:52:13,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:52:13,567 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 229 transitions. [2023-02-18 04:52:13,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:13,567 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 229 transitions. [2023-02-18 04:52:13,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 04:52:13,568 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:52:13,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:52:13,578 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 [2023-02-18 04:52:13,778 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 [2023-02-18 04:52:13,778 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:52:13,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:52:13,779 INFO L85 PathProgramCache]: Analyzing trace with hash -397297604, now seen corresponding path program 1 times [2023-02-18 04:52:13,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:52:13,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452576064] [2023-02-18 04:52:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:52:13,779 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 [2023-02-18 04:52:13,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:52:13,780 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) [2023-02-18 04:52:13,781 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 [2023-02-18 04:52:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:52:13,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 04:52:13,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:52:19,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 04:52:19,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:52:19,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:52:19,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452576064] [2023-02-18 04:52:19,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452576064] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:52:19,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:52:19,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 04:52:19,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475877533] [2023-02-18 04:52:19,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:52:19,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 04:52:19,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:52:19,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 04:52:19,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2023-02-18 04:52:19,953 INFO L87 Difference]: Start difference. First operand 182 states and 229 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:21,959 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] [2023-02-18 04:52:23,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 04:52:25,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 04:52:27,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 04:52:29,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 04:52:32,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 04:52:34,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 04:52:36,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 04:52:38,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 04:52:40,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 04:52:40,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:52:40,144 INFO L93 Difference]: Finished difference Result 181 states and 228 transitions. [2023-02-18 04:52:40,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 04:52:40,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-18 04:52:40,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:52:40,150 INFO L225 Difference]: With dead ends: 181 [2023-02-18 04:52:40,150 INFO L226 Difference]: Without dead ends: 156 [2023-02-18 04:52:40,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2023-02-18 04:52:40,150 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 32 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:52:40,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 125 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 10 Unknown, 0 Unchecked, 20.2s Time] [2023-02-18 04:52:40,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-02-18 04:52:40,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2023-02-18 04:52:40,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 145 states have (on average 1.3724137931034484) internal successors, (199), 155 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:40,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 199 transitions. [2023-02-18 04:52:40,154 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 199 transitions. Word has length 28 [2023-02-18 04:52:40,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:52:40,154 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 199 transitions. [2023-02-18 04:52:40,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:40,154 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 199 transitions. [2023-02-18 04:52:40,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 04:52:40,155 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:52:40,155 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:52:40,165 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 [2023-02-18 04:52:40,364 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 [2023-02-18 04:52:40,364 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:52:40,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:52:40,364 INFO L85 PathProgramCache]: Analyzing trace with hash 543568764, now seen corresponding path program 1 times [2023-02-18 04:52:40,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:52:40,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345017522] [2023-02-18 04:52:40,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:52:40,365 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 [2023-02-18 04:52:40,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:52:40,366 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) [2023-02-18 04:52:40,369 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 [2023-02-18 04:52:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:52:40,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 04:52:40,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:52:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 04:52:40,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:52:40,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:52:40,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345017522] [2023-02-18 04:52:40,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345017522] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:52:40,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:52:40,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 04:52:40,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821886622] [2023-02-18 04:52:40,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:52:40,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 04:52:40,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:52:40,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 04:52:40,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 04:52:40,490 INFO L87 Difference]: Start difference. First operand 156 states and 199 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:40,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:52:40,723 INFO L93 Difference]: Finished difference Result 227 states and 288 transitions. [2023-02-18 04:52:40,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 04:52:40,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-18 04:52:40,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:52:40,724 INFO L225 Difference]: With dead ends: 227 [2023-02-18 04:52:40,724 INFO L226 Difference]: Without dead ends: 227 [2023-02-18 04:52:40,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-02-18 04:52:40,725 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 215 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:52:40,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 89 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 04:52:40,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-02-18 04:52:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 159. [2023-02-18 04:52:40,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 148 states have (on average 1.364864864864865) internal successors, (202), 158 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:40,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 202 transitions. [2023-02-18 04:52:40,728 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 202 transitions. Word has length 28 [2023-02-18 04:52:40,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:52:40,729 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 202 transitions. [2023-02-18 04:52:40,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:40,729 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 202 transitions. [2023-02-18 04:52:40,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-18 04:52:40,729 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:52:40,729 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:52:40,744 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 [2023-02-18 04:52:40,930 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 [2023-02-18 04:52:40,930 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:52:40,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:52:40,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1430352431, now seen corresponding path program 1 times [2023-02-18 04:52:40,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:52:40,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110618173] [2023-02-18 04:52:40,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:52:40,931 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 [2023-02-18 04:52:40,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:52:40,933 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) [2023-02-18 04:52:40,936 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 [2023-02-18 04:52:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:52:41,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 04:52:41,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:52:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 04:52:41,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:52:41,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2023-02-18 04:52:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 04:52:41,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:52:41,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110618173] [2023-02-18 04:52:41,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110618173] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:52:41,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:52:41,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-02-18 04:52:41,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432824191] [2023-02-18 04:52:41,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:52:41,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 04:52:41,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:52:41,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 04:52:41,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-02-18 04:52:41,203 INFO L87 Difference]: Start difference. First operand 159 states and 202 transitions. Second operand has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:42,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:52:42,252 INFO L93 Difference]: Finished difference Result 389 states and 502 transitions. [2023-02-18 04:52:42,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 04:52:42,253 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-02-18 04:52:42,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:52:42,254 INFO L225 Difference]: With dead ends: 389 [2023-02-18 04:52:42,254 INFO L226 Difference]: Without dead ends: 389 [2023-02-18 04:52:42,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-02-18 04:52:42,255 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 326 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:52:42,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 186 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-18 04:52:42,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-02-18 04:52:42,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 165. [2023-02-18 04:52:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 154 states have (on average 1.3571428571428572) internal successors, (209), 164 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 209 transitions. [2023-02-18 04:52:42,259 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 209 transitions. Word has length 31 [2023-02-18 04:52:42,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:52:42,259 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 209 transitions. [2023-02-18 04:52:42,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:42,259 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 209 transitions. [2023-02-18 04:52:42,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-18 04:52:42,259 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:52:42,259 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:52:42,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-02-18 04:52:42,461 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 [2023-02-18 04:52:42,461 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:52:42,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:52:42,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1391261449, now seen corresponding path program 1 times [2023-02-18 04:52:42,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:52:42,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999943195] [2023-02-18 04:52:42,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:52:42,462 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 [2023-02-18 04:52:42,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:52:42,464 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) [2023-02-18 04:52:42,468 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 [2023-02-18 04:52:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:52:42,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 04:52:42,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:52:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 04:52:42,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:52:42,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:52:42,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999943195] [2023-02-18 04:52:42,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999943195] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:52:42,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:52:42,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 04:52:42,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952166813] [2023-02-18 04:52:42,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:52:42,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 04:52:42,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:52:42,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 04:52:42,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 04:52:42,564 INFO L87 Difference]: Start difference. First operand 165 states and 209 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:42,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:52:42,578 INFO L93 Difference]: Finished difference Result 165 states and 206 transitions. [2023-02-18 04:52:42,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 04:52:42,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-02-18 04:52:42,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:52:42,579 INFO L225 Difference]: With dead ends: 165 [2023-02-18 04:52:42,580 INFO L226 Difference]: Without dead ends: 165 [2023-02-18 04:52:42,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 04:52:42,581 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:52:42,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 04:52:42,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-02-18 04:52:42,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2023-02-18 04:52:42,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 155 states have (on average 1.3290322580645162) internal successors, (206), 164 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 206 transitions. [2023-02-18 04:52:42,585 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 206 transitions. Word has length 32 [2023-02-18 04:52:42,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:52:42,585 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 206 transitions. [2023-02-18 04:52:42,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:42,585 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 206 transitions. [2023-02-18 04:52:42,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-18 04:52:42,585 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:52:42,586 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:52:42,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-02-18 04:52:42,795 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 [2023-02-18 04:52:42,796 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:52:42,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:52:42,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1391252418, now seen corresponding path program 1 times [2023-02-18 04:52:42,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:52:42,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427231157] [2023-02-18 04:52:42,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:52:42,796 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 [2023-02-18 04:52:42,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:52:42,797 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) [2023-02-18 04:52:42,798 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 [2023-02-18 04:52:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:52:42,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 04:52:42,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:52:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 04:52:42,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:52:42,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2023-02-18 04:52:43,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 04:52:43,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:52:43,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427231157] [2023-02-18 04:52:43,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427231157] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:52:43,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:52:43,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-02-18 04:52:43,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711953348] [2023-02-18 04:52:43,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:52:43,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 04:52:43,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:52:43,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 04:52:43,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-18 04:52:43,007 INFO L87 Difference]: Start difference. First operand 165 states and 206 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:43,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:52:43,841 INFO L93 Difference]: Finished difference Result 626 states and 789 transitions. [2023-02-18 04:52:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-18 04:52:43,842 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-02-18 04:52:43,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:52:43,844 INFO L225 Difference]: With dead ends: 626 [2023-02-18 04:52:43,844 INFO L226 Difference]: Without dead ends: 626 [2023-02-18 04:52:43,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2023-02-18 04:52:43,845 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 801 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-18 04:52:43,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 158 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-18 04:52:43,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-02-18 04:52:43,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 226. [2023-02-18 04:52:43,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 217 states have (on average 1.3502304147465438) internal successors, (293), 225 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 293 transitions. [2023-02-18 04:52:43,851 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 293 transitions. Word has length 32 [2023-02-18 04:52:43,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:52:43,851 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 293 transitions. [2023-02-18 04:52:43,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:43,852 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 293 transitions. [2023-02-18 04:52:43,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-18 04:52:43,852 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:52:43,852 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:52:43,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-02-18 04:52:44,062 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 [2023-02-18 04:52:44,062 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:52:44,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:52:44,063 INFO L85 PathProgramCache]: Analyzing trace with hash 155161166, now seen corresponding path program 3 times [2023-02-18 04:52:44,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:52:44,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398294038] [2023-02-18 04:52:44,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 04:52:44,063 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 [2023-02-18 04:52:44,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:52:44,064 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) [2023-02-18 04:52:44,065 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 [2023-02-18 04:52:44,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-18 04:52:44,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:52:44,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-18 04:52:44,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:52:44,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 04:52:44,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-02-18 04:52:44,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 04:52:44,305 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:52:44,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:52:44,766 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 04:52:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:52:45,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:52:45,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398294038] [2023-02-18 04:52:45,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398294038] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:52:45,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:52:45,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2023-02-18 04:52:45,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053704098] [2023-02-18 04:52:45,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:52:45,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-18 04:52:45,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:52:45,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-18 04:52:45,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2023-02-18 04:52:45,110 INFO L87 Difference]: Start difference. First operand 226 states and 293 transitions. Second operand has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:49,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:52:49,526 INFO L93 Difference]: Finished difference Result 1546 states and 2080 transitions. [2023-02-18 04:52:49,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-18 04:52:49,527 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-02-18 04:52:49,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:52:49,532 INFO L225 Difference]: With dead ends: 1546 [2023-02-18 04:52:49,532 INFO L226 Difference]: Without dead ends: 1545 [2023-02-18 04:52:49,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=588, Invalid=1862, Unknown=0, NotChecked=0, Total=2450 [2023-02-18 04:52:49,537 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 1422 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:52:49,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1422 Valid, 635 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-02-18 04:52:49,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2023-02-18 04:52:49,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 941. [2023-02-18 04:52:49,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 932 states have (on average 1.417381974248927) internal successors, (1321), 940 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:49,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1321 transitions. [2023-02-18 04:52:49,556 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1321 transitions. Word has length 32 [2023-02-18 04:52:49,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:52:49,557 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1321 transitions. [2023-02-18 04:52:49,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:49,557 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1321 transitions. [2023-02-18 04:52:49,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-18 04:52:49,557 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:52:49,557 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:52:49,568 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 [2023-02-18 04:52:49,768 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 [2023-02-18 04:52:49,768 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:52:49,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:52:49,768 INFO L85 PathProgramCache]: Analyzing trace with hash 646893308, now seen corresponding path program 1 times [2023-02-18 04:52:49,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:52:49,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676156446] [2023-02-18 04:52:49,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:52:49,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 04:52:49,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:52:49,770 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) [2023-02-18 04:52:49,772 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 [2023-02-18 04:52:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:52:49,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 04:52:49,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:52:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 04:52:49,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:52:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 04:52:49,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:52:49,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676156446] [2023-02-18 04:52:49,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676156446] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:52:49,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:52:49,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-18 04:52:49,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449744991] [2023-02-18 04:52:49,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:52:49,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 04:52:49,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:52:49,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 04:52:49,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-18 04:52:49,896 INFO L87 Difference]: Start difference. First operand 941 states and 1321 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:52:50,119 INFO L93 Difference]: Finished difference Result 925 states and 1292 transitions. [2023-02-18 04:52:50,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 04:52:50,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-02-18 04:52:50,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:52:50,122 INFO L225 Difference]: With dead ends: 925 [2023-02-18 04:52:50,122 INFO L226 Difference]: Without dead ends: 925 [2023-02-18 04:52:50,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-18 04:52:50,122 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 27 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:52:50,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 125 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 04:52:50,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2023-02-18 04:52:50,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 914. [2023-02-18 04:52:50,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 905 states have (on average 1.4143646408839778) internal successors, (1280), 913 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:50,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1280 transitions. [2023-02-18 04:52:50,136 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1280 transitions. Word has length 35 [2023-02-18 04:52:50,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:52:50,136 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 1280 transitions. [2023-02-18 04:52:50,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:50,137 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1280 transitions. [2023-02-18 04:52:50,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-18 04:52:50,137 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:52:50,137 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:52:50,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-02-18 04:52:50,347 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 [2023-02-18 04:52:50,347 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:52:50,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:52:50,348 INFO L85 PathProgramCache]: Analyzing trace with hash 770896954, now seen corresponding path program 2 times [2023-02-18 04:52:50,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:52:50,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186898479] [2023-02-18 04:52:50,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 04:52:50,349 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 [2023-02-18 04:52:50,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:52:50,350 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) [2023-02-18 04:52:50,352 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 [2023-02-18 04:52:50,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 04:52:50,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:52:50,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 04:52:50,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:52:50,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 04:52:50,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-02-18 04:52:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-02-18 04:52:50,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:52:50,682 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 04:52:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-02-18 04:52:50,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:52:50,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186898479] [2023-02-18 04:52:50,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186898479] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:52:50,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:52:50,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2023-02-18 04:52:50,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041168018] [2023-02-18 04:52:50,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:52:50,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 04:52:50,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:52:50,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 04:52:50,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-18 04:52:50,687 INFO L87 Difference]: Start difference. First operand 914 states and 1280 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:51,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:52:51,100 INFO L93 Difference]: Finished difference Result 1046 states and 1448 transitions. [2023-02-18 04:52:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 04:52:51,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-02-18 04:52:51,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:52:51,102 INFO L225 Difference]: With dead ends: 1046 [2023-02-18 04:52:51,102 INFO L226 Difference]: Without dead ends: 1046 [2023-02-18 04:52:51,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-02-18 04:52:51,103 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 160 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 04:52:51,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 49 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 04:52:51,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2023-02-18 04:52:51,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 787. [2023-02-18 04:52:51,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 780 states have (on average 1.4102564102564104) internal successors, (1100), 786 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:51,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1100 transitions. [2023-02-18 04:52:51,116 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1100 transitions. Word has length 37 [2023-02-18 04:52:51,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:52:51,116 INFO L495 AbstractCegarLoop]: Abstraction has 787 states and 1100 transitions. [2023-02-18 04:52:51,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:51,117 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1100 transitions. [2023-02-18 04:52:51,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-18 04:52:51,117 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:52:51,117 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:52:51,125 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 [2023-02-18 04:52:51,325 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 [2023-02-18 04:52:51,325 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:52:51,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:52:51,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1106455769, now seen corresponding path program 1 times [2023-02-18 04:52:51,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:52:51,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820653399] [2023-02-18 04:52:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:52:51,326 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 [2023-02-18 04:52:51,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:52:51,327 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) [2023-02-18 04:52:51,328 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 [2023-02-18 04:52:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:52:51,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-18 04:52:51,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:52:51,433 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 8 treesize of output 7 [2023-02-18 04:52:51,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-02-18 04:52:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:52:51,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:52:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-18 04:52:51,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:52:51,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820653399] [2023-02-18 04:52:51,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820653399] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:52:51,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:52:51,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2023-02-18 04:52:51,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780735023] [2023-02-18 04:52:51,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:52:51,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-18 04:52:51,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:52:51,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-18 04:52:51,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-02-18 04:52:51,718 INFO L87 Difference]: Start difference. First operand 787 states and 1100 transitions. Second operand has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:52,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:52:52,514 INFO L93 Difference]: Finished difference Result 331 states and 403 transitions. [2023-02-18 04:52:52,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-18 04:52:52,515 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-02-18 04:52:52,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:52:52,515 INFO L225 Difference]: With dead ends: 331 [2023-02-18 04:52:52,515 INFO L226 Difference]: Without dead ends: 279 [2023-02-18 04:52:52,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=202, Invalid=728, Unknown=0, NotChecked=0, Total=930 [2023-02-18 04:52:52,516 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 510 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-18 04:52:52,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 315 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-18 04:52:52,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-02-18 04:52:52,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 249. [2023-02-18 04:52:52,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 242 states have (on average 1.2892561983471074) internal successors, (312), 248 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:52,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 312 transitions. [2023-02-18 04:52:52,521 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 312 transitions. Word has length 37 [2023-02-18 04:52:52,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:52:52,521 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 312 transitions. [2023-02-18 04:52:52,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:52,521 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 312 transitions. [2023-02-18 04:52:52,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-18 04:52:52,522 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:52:52,522 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:52:52,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-02-18 04:52:52,731 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 [2023-02-18 04:52:52,732 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:52:52,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:52:52,732 INFO L85 PathProgramCache]: Analyzing trace with hash -282034220, now seen corresponding path program 4 times [2023-02-18 04:52:52,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:52:52,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115113465] [2023-02-18 04:52:52,733 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 04:52:52,733 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 [2023-02-18 04:52:52,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:52:52,734 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) [2023-02-18 04:52:52,735 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 [2023-02-18 04:52:52,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 04:52:52,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:52:52,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-18 04:52:52,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:52:52,877 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 8 treesize of output 7 [2023-02-18 04:52:52,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-02-18 04:52:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:52:53,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:52:53,487 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:52:53,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:52:53,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115113465] [2023-02-18 04:52:53,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115113465] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:52:53,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:52:53,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 27 [2023-02-18 04:52:53,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977935752] [2023-02-18 04:52:53,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:52:53,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-18 04:52:53,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:52:53,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-18 04:52:53,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2023-02-18 04:52:53,490 INFO L87 Difference]: Start difference. First operand 249 states and 312 transitions. Second operand has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 27 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:55,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:52:55,637 INFO L93 Difference]: Finished difference Result 704 states and 902 transitions. [2023-02-18 04:52:55,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-18 04:52:55,638 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 27 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-02-18 04:52:55,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:52:55,639 INFO L225 Difference]: With dead ends: 704 [2023-02-18 04:52:55,639 INFO L226 Difference]: Without dead ends: 699 [2023-02-18 04:52:55,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=356, Invalid=1536, Unknown=0, NotChecked=0, Total=1892 [2023-02-18 04:52:55,640 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 1029 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-02-18 04:52:55,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 948 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-02-18 04:52:55,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-02-18 04:52:55,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 520. [2023-02-18 04:52:55,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 513 states have (on average 1.3196881091617934) internal successors, (677), 519 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:55,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 677 transitions. [2023-02-18 04:52:55,648 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 677 transitions. Word has length 40 [2023-02-18 04:52:55,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:52:55,648 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 677 transitions. [2023-02-18 04:52:55,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 27 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:55,648 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 677 transitions. [2023-02-18 04:52:55,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-18 04:52:55,649 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:52:55,649 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:52:55,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-02-18 04:52:55,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 04:52:55,859 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:52:55,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:52:55,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1919906229, now seen corresponding path program 1 times [2023-02-18 04:52:55,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:52:55,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057594488] [2023-02-18 04:52:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:52:55,860 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 [2023-02-18 04:52:55,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:52:55,861 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 04:52:55,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-02-18 04:52:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:52:55,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 04:52:55,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:52:55,989 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 8 treesize of output 7 [2023-02-18 04:52:56,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-02-18 04:52:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-18 04:52:56,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:52:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-18 04:52:56,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:52:56,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057594488] [2023-02-18 04:52:56,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057594488] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:52:56,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:52:56,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-02-18 04:52:56,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018679778] [2023-02-18 04:52:56,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:52:56,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-18 04:52:56,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:52:56,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-18 04:52:56,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-02-18 04:52:56,295 INFO L87 Difference]: Start difference. First operand 520 states and 677 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:56,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:52:56,777 INFO L93 Difference]: Finished difference Result 690 states and 893 transitions. [2023-02-18 04:52:56,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-18 04:52:56,778 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-02-18 04:52:56,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:52:56,779 INFO L225 Difference]: With dead ends: 690 [2023-02-18 04:52:56,780 INFO L226 Difference]: Without dead ends: 690 [2023-02-18 04:52:56,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2023-02-18 04:52:56,781 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 544 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 04:52:56,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 210 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 04:52:56,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2023-02-18 04:52:56,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 520. [2023-02-18 04:52:56,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 513 states have (on average 1.3157894736842106) internal successors, (675), 519 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:56,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 675 transitions. [2023-02-18 04:52:56,788 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 675 transitions. Word has length 42 [2023-02-18 04:52:56,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:52:56,788 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 675 transitions. [2023-02-18 04:52:56,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:52:56,788 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 675 transitions. [2023-02-18 04:52:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-18 04:52:56,789 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:52:56,789 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:52:56,799 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 (35)] Ended with exit code 0 [2023-02-18 04:52:56,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 04:52:56,999 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:52:56,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:52:57,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1411874729, now seen corresponding path program 5 times [2023-02-18 04:52:57,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:52:57,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633733656] [2023-02-18 04:52:57,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 04:52:57,000 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 [2023-02-18 04:52:57,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:52:57,001 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 04:52:57,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-02-18 04:52:57,274 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-02-18 04:52:57,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:52:57,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-18 04:52:57,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:52:57,288 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 8 treesize of output 7 [2023-02-18 04:52:57,404 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 04:52:57,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 86 [2023-02-18 04:52:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:52:59,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:53:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:53:01,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:53:01,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633733656] [2023-02-18 04:53:01,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633733656] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:53:01,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:53:01,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-02-18 04:53:01,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995743891] [2023-02-18 04:53:01,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:53:01,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-18 04:53:01,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:53:01,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-18 04:53:01,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2023-02-18 04:53:01,422 INFO L87 Difference]: Start difference. First operand 520 states and 675 transitions. Second operand has 32 states, 31 states have (on average 2.774193548387097) internal successors, (86), 32 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:14,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:53:14,913 INFO L93 Difference]: Finished difference Result 1977 states and 2599 transitions. [2023-02-18 04:53:14,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-02-18 04:53:14,913 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.774193548387097) internal successors, (86), 32 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-02-18 04:53:14,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:53:14,917 INFO L225 Difference]: With dead ends: 1977 [2023-02-18 04:53:14,917 INFO L226 Difference]: Without dead ends: 1977 [2023-02-18 04:53:14,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1005, Invalid=4107, Unknown=0, NotChecked=0, Total=5112 [2023-02-18 04:53:14,918 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 2396 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 2851 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2396 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 2997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-02-18 04:53:14,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2396 Valid, 1372 Invalid, 2997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2851 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-02-18 04:53:14,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2023-02-18 04:53:14,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1333. [2023-02-18 04:53:14,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1326 states have (on average 1.3702865761689291) internal successors, (1817), 1332 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1817 transitions. [2023-02-18 04:53:14,936 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1817 transitions. Word has length 44 [2023-02-18 04:53:14,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:53:14,937 INFO L495 AbstractCegarLoop]: Abstraction has 1333 states and 1817 transitions. [2023-02-18 04:53:14,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.774193548387097) internal successors, (86), 32 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:14,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1817 transitions. [2023-02-18 04:53:14,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-18 04:53:14,938 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:53:14,938 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:53:14,951 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 (36)] Forceful destruction successful, exit code 0 [2023-02-18 04:53:15,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 04:53:15,149 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:53:15,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:53:15,149 INFO L85 PathProgramCache]: Analyzing trace with hash -484234273, now seen corresponding path program 2 times [2023-02-18 04:53:15,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:53:15,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762007126] [2023-02-18 04:53:15,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 04:53:15,150 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 [2023-02-18 04:53:15,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:53:15,151 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 04:53:15,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-02-18 04:53:15,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 04:53:15,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:53:15,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-18 04:53:15,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:53:15,251 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 [2023-02-18 04:53:15,254 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 8 treesize of output 7 [2023-02-18 04:53:15,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 04:53:15,266 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 04:53:15,266 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 2 case distinctions, treesize of input 19 treesize of output 55 [2023-02-18 04:53:15,271 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 04:53:15,272 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 11 treesize of output 15 [2023-02-18 04:53:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-02-18 04:53:15,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:53:15,877 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 04:53:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-02-18 04:53:16,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:53:16,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762007126] [2023-02-18 04:53:16,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762007126] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:53:16,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:53:16,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-02-18 04:53:16,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824873216] [2023-02-18 04:53:16,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:53:16,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 04:53:16,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:53:16,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 04:53:16,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-02-18 04:53:16,029 INFO L87 Difference]: Start difference. First operand 1333 states and 1817 transitions. Second operand has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:16,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:53:16,477 INFO L93 Difference]: Finished difference Result 1357 states and 1785 transitions. [2023-02-18 04:53:16,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 04:53:16,478 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-02-18 04:53:16,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:53:16,481 INFO L225 Difference]: With dead ends: 1357 [2023-02-18 04:53:16,481 INFO L226 Difference]: Without dead ends: 1357 [2023-02-18 04:53:16,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2023-02-18 04:53:16,481 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 248 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 04:53:16,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 40 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 04:53:16,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2023-02-18 04:53:16,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1332. [2023-02-18 04:53:16,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1326 states have (on average 1.3280542986425339) internal successors, (1761), 1331 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:16,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1761 transitions. [2023-02-18 04:53:16,495 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1761 transitions. Word has length 45 [2023-02-18 04:53:16,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:53:16,496 INFO L495 AbstractCegarLoop]: Abstraction has 1332 states and 1761 transitions. [2023-02-18 04:53:16,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:16,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1761 transitions. [2023-02-18 04:53:16,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-18 04:53:16,497 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:53:16,497 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2023-02-18 04:53:16,505 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 (37)] Ended with exit code 0 [2023-02-18 04:53:16,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 04:53:16,705 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:53:16,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:53:16,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1048882662, now seen corresponding path program 3 times [2023-02-18 04:53:16,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:53:16,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155469432] [2023-02-18 04:53:16,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 04:53:16,706 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 [2023-02-18 04:53:16,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:53:16,707 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 04:53:16,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-02-18 04:53:16,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-18 04:53:16,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:53:16,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-18 04:53:16,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:53:16,905 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 8 treesize of output 7 [2023-02-18 04:53:17,064 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:53:17,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:53:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:53:18,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:53:18,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155469432] [2023-02-18 04:53:18,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155469432] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:53:18,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:53:18,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-02-18 04:53:18,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675238443] [2023-02-18 04:53:18,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:53:18,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-18 04:53:18,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:53:18,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-18 04:53:18,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2023-02-18 04:53:18,247 INFO L87 Difference]: Start difference. First operand 1332 states and 1761 transitions. Second operand has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:28,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:53:28,132 INFO L93 Difference]: Finished difference Result 2673 states and 3446 transitions. [2023-02-18 04:53:28,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-02-18 04:53:28,133 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-02-18 04:53:28,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:53:28,138 INFO L225 Difference]: With dead ends: 2673 [2023-02-18 04:53:28,138 INFO L226 Difference]: Without dead ends: 2673 [2023-02-18 04:53:28,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1194, Invalid=2588, Unknown=0, NotChecked=0, Total=3782 [2023-02-18 04:53:28,139 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 3050 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 2730 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-02-18 04:53:28,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3050 Valid, 3023 Invalid, 2809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2730 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-02-18 04:53:28,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2673 states. [2023-02-18 04:53:28,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2673 to 1380. [2023-02-18 04:53:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1374 states have (on average 1.3253275109170306) internal successors, (1821), 1379 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:28,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1821 transitions. [2023-02-18 04:53:28,158 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1821 transitions. Word has length 46 [2023-02-18 04:53:28,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:53:28,158 INFO L495 AbstractCegarLoop]: Abstraction has 1380 states and 1821 transitions. [2023-02-18 04:53:28,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:28,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1821 transitions. [2023-02-18 04:53:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-18 04:53:28,159 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:53:28,159 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:53:28,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-02-18 04:53:28,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 04:53:28,370 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:53:28,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:53:28,370 INFO L85 PathProgramCache]: Analyzing trace with hash 274247196, now seen corresponding path program 6 times [2023-02-18 04:53:28,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:53:28,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038038993] [2023-02-18 04:53:28,370 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 04:53:28,371 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 [2023-02-18 04:53:28,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:53:28,372 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 04:53:28,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-02-18 04:53:28,594 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-02-18 04:53:28,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:53:28,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-18 04:53:28,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:53:28,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 04:53:28,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-02-18 04:53:28,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 04:53:28,694 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-18 04:53:28,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:53:29,261 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 04:53:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-18 04:53:29,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:53:29,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038038993] [2023-02-18 04:53:29,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038038993] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:53:29,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:53:29,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-02-18 04:53:29,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732709932] [2023-02-18 04:53:29,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:53:29,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-18 04:53:29,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:53:29,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-18 04:53:29,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-02-18 04:53:29,341 INFO L87 Difference]: Start difference. First operand 1380 states and 1821 transitions. Second operand has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:33,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:53:33,869 INFO L93 Difference]: Finished difference Result 2520 states and 3267 transitions. [2023-02-18 04:53:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-18 04:53:33,870 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-02-18 04:53:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:53:33,875 INFO L225 Difference]: With dead ends: 2520 [2023-02-18 04:53:33,881 INFO L226 Difference]: Without dead ends: 2491 [2023-02-18 04:53:33,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=512, Invalid=1380, Unknown=0, NotChecked=0, Total=1892 [2023-02-18 04:53:33,882 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 1870 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:53:33,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1870 Valid, 572 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-02-18 04:53:33,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2491 states. [2023-02-18 04:53:33,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2491 to 1179. [2023-02-18 04:53:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1173 states have (on average 1.289002557544757) internal successors, (1512), 1178 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:33,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1512 transitions. [2023-02-18 04:53:33,897 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1512 transitions. Word has length 48 [2023-02-18 04:53:33,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:53:33,897 INFO L495 AbstractCegarLoop]: Abstraction has 1179 states and 1512 transitions. [2023-02-18 04:53:33,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:33,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1512 transitions. [2023-02-18 04:53:33,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-02-18 04:53:33,898 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:53:33,898 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:53:33,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-02-18 04:53:34,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 04:53:34,110 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:53:34,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:53:34,111 INFO L85 PathProgramCache]: Analyzing trace with hash -968901392, now seen corresponding path program 1 times [2023-02-18 04:53:34,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:53:34,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362936221] [2023-02-18 04:53:34,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:53:34,111 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 [2023-02-18 04:53:34,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:53:34,113 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 04:53:34,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-02-18 04:53:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:53:34,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 04:53:34,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:53:34,294 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-18 04:53:34,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:53:34,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2023-02-18 04:53:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-18 04:53:34,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:53:34,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362936221] [2023-02-18 04:53:34,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362936221] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:53:34,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:53:34,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-02-18 04:53:34,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673592547] [2023-02-18 04:53:34,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:53:34,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 04:53:34,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:53:34,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 04:53:34,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-02-18 04:53:34,491 INFO L87 Difference]: Start difference. First operand 1179 states and 1512 transitions. Second operand has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:35,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:53:35,143 INFO L93 Difference]: Finished difference Result 1706 states and 2134 transitions. [2023-02-18 04:53:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-18 04:53:35,144 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-02-18 04:53:35,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:53:35,147 INFO L225 Difference]: With dead ends: 1706 [2023-02-18 04:53:35,147 INFO L226 Difference]: Without dead ends: 1706 [2023-02-18 04:53:35,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2023-02-18 04:53:35,148 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 653 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 04:53:35,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 232 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 04:53:35,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2023-02-18 04:53:35,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1179. [2023-02-18 04:53:35,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1173 states have (on average 1.2685421994884911) internal successors, (1488), 1178 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:35,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1488 transitions. [2023-02-18 04:53:35,161 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1488 transitions. Word has length 53 [2023-02-18 04:53:35,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:53:35,161 INFO L495 AbstractCegarLoop]: Abstraction has 1179 states and 1488 transitions. [2023-02-18 04:53:35,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:35,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1488 transitions. [2023-02-18 04:53:35,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-18 04:53:35,162 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:53:35,162 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:53:35,177 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 (40)] Forceful destruction successful, exit code 0 [2023-02-18 04:53:35,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 04:53:35,373 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:53:35,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:53:35,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2107734792, now seen corresponding path program 2 times [2023-02-18 04:53:35,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:53:35,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738124814] [2023-02-18 04:53:35,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 04:53:35,374 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 [2023-02-18 04:53:35,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:53:35,375 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 04:53:35,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-02-18 04:53:35,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 04:53:35,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:53:35,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 04:53:35,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:53:35,545 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-02-18 04:53:35,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:53:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-02-18 04:53:35,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:53:35,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738124814] [2023-02-18 04:53:35,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738124814] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:53:35,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:53:35,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-18 04:53:35,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735323062] [2023-02-18 04:53:35,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:53:35,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 04:53:35,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:53:35,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 04:53:35,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-02-18 04:53:35,601 INFO L87 Difference]: Start difference. First operand 1179 states and 1488 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:36,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:53:36,121 INFO L93 Difference]: Finished difference Result 1283 states and 1594 transitions. [2023-02-18 04:53:36,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 04:53:36,121 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-02-18 04:53:36,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:53:36,124 INFO L225 Difference]: With dead ends: 1283 [2023-02-18 04:53:36,124 INFO L226 Difference]: Without dead ends: 1283 [2023-02-18 04:53:36,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-02-18 04:53:36,124 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 121 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 04:53:36,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 269 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 04:53:36,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2023-02-18 04:53:36,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1233. [2023-02-18 04:53:36,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1227 states have (on average 1.2550937245313774) internal successors, (1540), 1232 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:36,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1540 transitions. [2023-02-18 04:53:36,135 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1540 transitions. Word has length 60 [2023-02-18 04:53:36,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:53:36,135 INFO L495 AbstractCegarLoop]: Abstraction has 1233 states and 1540 transitions. [2023-02-18 04:53:36,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:36,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1540 transitions. [2023-02-18 04:53:36,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-18 04:53:36,136 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:53:36,136 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:53:36,147 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 (41)] Ended with exit code 0 [2023-02-18 04:53:36,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 04:53:36,347 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:53:36,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:53:36,347 INFO L85 PathProgramCache]: Analyzing trace with hash -319248402, now seen corresponding path program 1 times [2023-02-18 04:53:36,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:53:36,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850410356] [2023-02-18 04:53:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:53:36,348 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 [2023-02-18 04:53:36,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:53:36,349 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 04:53:36,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-02-18 04:53:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:53:36,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 04:53:36,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:53:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-02-18 04:53:36,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:53:36,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2023-02-18 04:53:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-02-18 04:53:36,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:53:36,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850410356] [2023-02-18 04:53:36,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850410356] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:53:36,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:53:36,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-02-18 04:53:36,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289759723] [2023-02-18 04:53:36,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:53:36,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-18 04:53:36,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:53:36,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-18 04:53:36,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-02-18 04:53:36,907 INFO L87 Difference]: Start difference. First operand 1233 states and 1540 transitions. Second operand has 16 states, 15 states have (on average 5.666666666666667) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:41,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:53:41,023 INFO L93 Difference]: Finished difference Result 3279 states and 4147 transitions. [2023-02-18 04:53:41,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-02-18 04:53:41,024 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.666666666666667) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-02-18 04:53:41,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:53:41,030 INFO L225 Difference]: With dead ends: 3279 [2023-02-18 04:53:41,030 INFO L226 Difference]: Without dead ends: 3279 [2023-02-18 04:53:41,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=546, Invalid=1904, Unknown=0, NotChecked=0, Total=2450 [2023-02-18 04:53:41,031 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1247 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-02-18 04:53:41,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 764 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-02-18 04:53:41,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2023-02-18 04:53:41,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 1952. [2023-02-18 04:53:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1946 states have (on average 1.273895169578623) internal successors, (2479), 1951 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:41,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2479 transitions. [2023-02-18 04:53:41,049 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2479 transitions. Word has length 69 [2023-02-18 04:53:41,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:53:41,049 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 2479 transitions. [2023-02-18 04:53:41,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.666666666666667) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:41,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2479 transitions. [2023-02-18 04:53:41,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-18 04:53:41,050 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:53:41,051 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:53:41,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2023-02-18 04:53:41,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 04:53:41,251 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:53:41,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:53:41,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1746122625, now seen corresponding path program 7 times [2023-02-18 04:53:41,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:53:41,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048304544] [2023-02-18 04:53:41,252 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 04:53:41,252 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 [2023-02-18 04:53:41,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:53:41,254 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 04:53:41,256 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 (43)] Waiting until timeout for monitored process [2023-02-18 04:53:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:53:41,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-18 04:53:41,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:53:41,621 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 04:53:41,621 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 1 case distinctions, treesize of input 11 treesize of output 29 [2023-02-18 04:53:41,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2023-02-18 04:53:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 155 proven. 100 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-02-18 04:53:41,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:53:42,602 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 163 proven. 92 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-02-18 04:53:42,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:53:42,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048304544] [2023-02-18 04:53:42,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048304544] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:53:42,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:53:42,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-02-18 04:53:42,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306745426] [2023-02-18 04:53:42,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:53:42,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-18 04:53:42,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:53:42,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-18 04:53:42,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2023-02-18 04:53:42,604 INFO L87 Difference]: Start difference. First operand 1952 states and 2479 transitions. Second operand has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:53,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:53:53,552 INFO L93 Difference]: Finished difference Result 6528 states and 8241 transitions. [2023-02-18 04:53:53,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-02-18 04:53:53,553 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-02-18 04:53:53,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:53:53,567 INFO L225 Difference]: With dead ends: 6528 [2023-02-18 04:53:53,567 INFO L226 Difference]: Without dead ends: 6350 [2023-02-18 04:53:53,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=971, Invalid=4141, Unknown=0, NotChecked=0, Total=5112 [2023-02-18 04:53:53,569 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 3320 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 5268 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3320 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 5403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 5268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-02-18 04:53:53,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3320 Valid, 3098 Invalid, 5403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 5268 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-02-18 04:53:53,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6350 states. [2023-02-18 04:53:53,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6350 to 3224. [2023-02-18 04:53:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3224 states, 3218 states have (on average 1.2809198259788688) internal successors, (4122), 3223 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:53,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 4122 transitions. [2023-02-18 04:53:53,604 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 4122 transitions. Word has length 76 [2023-02-18 04:53:53,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:53:53,604 INFO L495 AbstractCegarLoop]: Abstraction has 3224 states and 4122 transitions. [2023-02-18 04:53:53,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:53,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 4122 transitions. [2023-02-18 04:53:53,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-02-18 04:53:53,606 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:53:53,606 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:53:53,619 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 (43)] Forceful destruction successful, exit code 0 [2023-02-18 04:53:53,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 04:53:53,819 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:53:53,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:53:53,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1773352908, now seen corresponding path program 3 times [2023-02-18 04:53:53,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:53:53,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179917703] [2023-02-18 04:53:53,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 04:53:53,820 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 [2023-02-18 04:53:53,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:53:53,820 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 04:53:53,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-02-18 04:53:53,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-18 04:53:53,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:53:53,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-18 04:53:53,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:53:54,002 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 [2023-02-18 04:53:54,004 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 8 treesize of output 7 [2023-02-18 04:53:54,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 04:53:54,018 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 04:53:54,018 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 2 case distinctions, treesize of input 19 treesize of output 55 [2023-02-18 04:53:54,023 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 04:53:54,023 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 11 treesize of output 15 [2023-02-18 04:53:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-02-18 04:53:54,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:53:55,061 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 04:53:55,064 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 04:53:55,066 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 04:53:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-02-18 04:53:55,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:53:55,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179917703] [2023-02-18 04:53:55,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179917703] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:53:55,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:53:55,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-02-18 04:53:55,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758496179] [2023-02-18 04:53:55,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:53:55,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-18 04:53:55,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:53:55,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-18 04:53:55,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-02-18 04:53:55,148 INFO L87 Difference]: Start difference. First operand 3224 states and 4122 transitions. Second operand has 19 states, 18 states have (on average 4.777777777777778) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:57,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:53:57,340 INFO L93 Difference]: Finished difference Result 7326 states and 9454 transitions. [2023-02-18 04:53:57,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-18 04:53:57,341 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.777777777777778) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-02-18 04:53:57,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:53:57,351 INFO L225 Difference]: With dead ends: 7326 [2023-02-18 04:53:57,351 INFO L226 Difference]: Without dead ends: 7326 [2023-02-18 04:53:57,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=340, Invalid=782, Unknown=0, NotChecked=0, Total=1122 [2023-02-18 04:53:57,352 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 913 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-18 04:53:57,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 184 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-02-18 04:53:57,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7326 states. [2023-02-18 04:53:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7326 to 6592. [2023-02-18 04:53:57,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6592 states, 6586 states have (on average 1.2845429699362283) internal successors, (8460), 6591 states have internal predecessors, (8460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6592 states to 6592 states and 8460 transitions. [2023-02-18 04:53:57,417 INFO L78 Accepts]: Start accepts. Automaton has 6592 states and 8460 transitions. Word has length 77 [2023-02-18 04:53:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:53:57,418 INFO L495 AbstractCegarLoop]: Abstraction has 6592 states and 8460 transitions. [2023-02-18 04:53:57,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.777777777777778) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:53:57,418 INFO L276 IsEmpty]: Start isEmpty. Operand 6592 states and 8460 transitions. [2023-02-18 04:53:57,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-02-18 04:53:57,420 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:53:57,420 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:53:57,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2023-02-18 04:53:57,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 04:53:57,631 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:53:57,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:53:57,632 INFO L85 PathProgramCache]: Analyzing trace with hash 796230530, now seen corresponding path program 8 times [2023-02-18 04:53:57,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:53:57,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075511375] [2023-02-18 04:53:57,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 04:53:57,632 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 [2023-02-18 04:53:57,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:53:57,633 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 04:53:57,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-02-18 04:53:57,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 04:53:57,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:53:57,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-18 04:53:57,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:53:57,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 04:53:57,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-02-18 04:53:57,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 04:53:58,093 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 150 proven. 164 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-18 04:53:58,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:53:59,993 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 04:54:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:54:00,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:54:00,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075511375] [2023-02-18 04:54:00,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075511375] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:54:00,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:54:00,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24] total 42 [2023-02-18 04:54:00,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564500941] [2023-02-18 04:54:00,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:54:00,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-18 04:54:00,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:54:00,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-18 04:54:00,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1530, Unknown=0, NotChecked=0, Total=1722 [2023-02-18 04:54:00,982 INFO L87 Difference]: Start difference. First operand 6592 states and 8460 transitions. Second operand has 42 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 42 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:56:24,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:56:24,608 INFO L93 Difference]: Finished difference Result 99334 states and 129288 transitions. [2023-02-18 04:56:24,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 372 states. [2023-02-18 04:56:24,609 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 42 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-02-18 04:56:24,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:56:24,866 INFO L225 Difference]: With dead ends: 99334 [2023-02-18 04:56:24,866 INFO L226 Difference]: Without dead ends: 98937 [2023-02-18 04:56:24,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62962 ImplicationChecksByTransitivity, 70.7s TimeCoverageRelationStatistics Valid=14803, Invalid=148009, Unknown=0, NotChecked=0, Total=162812 [2023-02-18 04:56:24,939 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 10867 mSDsluCounter, 9634 mSDsCounter, 0 mSdLazyCounter, 19173 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10867 SdHoareTripleChecker+Valid, 10194 SdHoareTripleChecker+Invalid, 19831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 19173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.3s IncrementalHoareTripleChecker+Time [2023-02-18 04:56:24,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10867 Valid, 10194 Invalid, 19831 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [658 Valid, 19173 Invalid, 0 Unknown, 0 Unchecked, 74.3s Time] [2023-02-18 04:56:25,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98937 states. [2023-02-18 04:56:25,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98937 to 29784. [2023-02-18 04:56:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29784 states, 29778 states have (on average 1.3182550876485997) internal successors, (39255), 29783 states have internal predecessors, (39255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:56:26,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29784 states to 29784 states and 39255 transitions. [2023-02-18 04:56:26,192 INFO L78 Accepts]: Start accepts. Automaton has 29784 states and 39255 transitions. Word has length 80 [2023-02-18 04:56:26,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:56:26,192 INFO L495 AbstractCegarLoop]: Abstraction has 29784 states and 39255 transitions. [2023-02-18 04:56:26,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 42 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:56:26,193 INFO L276 IsEmpty]: Start isEmpty. Operand 29784 states and 39255 transitions. [2023-02-18 04:56:26,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-02-18 04:56:26,195 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:56:26,195 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:56:26,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2023-02-18 04:56:26,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 04:56:26,408 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:56:26,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:56:26,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1786098566, now seen corresponding path program 1 times [2023-02-18 04:56:26,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:56:26,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894511973] [2023-02-18 04:56:26,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:56:26,410 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 [2023-02-18 04:56:26,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:56:26,411 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 04:56:26,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-02-18 04:56:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:56:26,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 04:56:26,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:56:26,742 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-18 04:56:26,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:56:26,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2023-02-18 04:56:27,170 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-18 04:56:27,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:56:27,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894511973] [2023-02-18 04:56:27,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894511973] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:56:27,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:56:27,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-18 04:56:27,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237932614] [2023-02-18 04:56:27,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:56:27,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-18 04:56:27,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:56:27,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-18 04:56:27,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2023-02-18 04:56:27,173 INFO L87 Difference]: Start difference. First operand 29784 states and 39255 transitions. Second operand has 18 states, 17 states have (on average 6.294117647058823) internal successors, (107), 18 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:56:33,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:56:33,361 INFO L93 Difference]: Finished difference Result 34155 states and 44328 transitions. [2023-02-18 04:56:33,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-02-18 04:56:33,363 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.294117647058823) internal successors, (107), 18 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-02-18 04:56:33,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:56:33,415 INFO L225 Difference]: With dead ends: 34155 [2023-02-18 04:56:33,415 INFO L226 Difference]: Without dead ends: 34155 [2023-02-18 04:56:33,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1145 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=968, Invalid=2814, Unknown=0, NotChecked=0, Total=3782 [2023-02-18 04:56:33,417 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 1173 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:56:33,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 773 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-02-18 04:56:33,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34155 states. [2023-02-18 04:56:33,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34155 to 31022. [2023-02-18 04:56:33,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31022 states, 31016 states have (on average 1.3145150889863297) internal successors, (40771), 31021 states have internal predecessors, (40771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:56:33,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31022 states to 31022 states and 40771 transitions. [2023-02-18 04:56:33,866 INFO L78 Accepts]: Start accepts. Automaton has 31022 states and 40771 transitions. Word has length 81 [2023-02-18 04:56:33,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:56:33,867 INFO L495 AbstractCegarLoop]: Abstraction has 31022 states and 40771 transitions. [2023-02-18 04:56:33,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.294117647058823) internal successors, (107), 18 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:56:33,867 INFO L276 IsEmpty]: Start isEmpty. Operand 31022 states and 40771 transitions. [2023-02-18 04:56:33,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-02-18 04:56:33,869 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:56:33,869 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:56:33,879 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 (46)] Ended with exit code 0 [2023-02-18 04:56:34,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 04:56:34,075 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:56:34,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:56:34,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1694561016, now seen corresponding path program 9 times [2023-02-18 04:56:34,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:56:34,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018394599] [2023-02-18 04:56:34,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 04:56:34,076 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 [2023-02-18 04:56:34,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:56:34,077 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 04:56:34,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-02-18 04:56:35,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-02-18 04:56:35,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:56:35,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-18 04:56:35,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:56:35,114 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 8 treesize of output 7 [2023-02-18 04:56:35,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 04:56:35,315 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 04:56:35,315 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 1 case distinctions, treesize of input 32 treesize of output 66 [2023-02-18 04:56:35,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 04:56:35,688 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 46 proven. 362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:56:35,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:56:37,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 04:56:39,394 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 04:56:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 46 proven. 362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:56:39,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:56:39,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018394599] [2023-02-18 04:56:39,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018394599] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:56:39,514 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:56:39,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-02-18 04:56:39,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19521379] [2023-02-18 04:56:39,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:56:39,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-02-18 04:56:39,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:56:39,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-02-18 04:56:39,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=2118, Unknown=0, NotChecked=0, Total=2450 [2023-02-18 04:56:39,516 INFO L87 Difference]: Start difference. First operand 31022 states and 40771 transitions. Second operand has 50 states, 50 states have (on average 3.4) internal successors, (170), 50 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:57:22,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:57:22,021 INFO L93 Difference]: Finished difference Result 96330 states and 126362 transitions. [2023-02-18 04:57:22,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-02-18 04:57:22,022 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.4) internal successors, (170), 50 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-02-18 04:57:22,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:57:22,181 INFO L225 Difference]: With dead ends: 96330 [2023-02-18 04:57:22,182 INFO L226 Difference]: Without dead ends: 96146 [2023-02-18 04:57:22,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4063 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=2811, Invalid=15821, Unknown=0, NotChecked=0, Total=18632 [2023-02-18 04:57:22,184 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 4866 mSDsluCounter, 4383 mSDsCounter, 0 mSdLazyCounter, 10857 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4866 SdHoareTripleChecker+Valid, 4621 SdHoareTripleChecker+Invalid, 11168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 10857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2023-02-18 04:57:22,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4866 Valid, 4621 Invalid, 11168 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [311 Valid, 10857 Invalid, 0 Unknown, 0 Unchecked, 25.4s Time] [2023-02-18 04:57:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96146 states. [2023-02-18 04:57:23,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96146 to 37161. [2023-02-18 04:57:23,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37161 states, 37155 states have (on average 1.3084645404387028) internal successors, (48616), 37160 states have internal predecessors, (48616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:57:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37161 states to 37161 states and 48616 transitions. [2023-02-18 04:57:23,101 INFO L78 Accepts]: Start accepts. Automaton has 37161 states and 48616 transitions. Word has length 88 [2023-02-18 04:57:23,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:57:23,101 INFO L495 AbstractCegarLoop]: Abstraction has 37161 states and 48616 transitions. [2023-02-18 04:57:23,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.4) internal successors, (170), 50 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:57:23,101 INFO L276 IsEmpty]: Start isEmpty. Operand 37161 states and 48616 transitions. [2023-02-18 04:57:23,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-02-18 04:57:23,104 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:57:23,104 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:57:23,117 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 (47)] Ended with exit code 0 [2023-02-18 04:57:23,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 04:57:23,309 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:57:23,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:57:23,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2130212004, now seen corresponding path program 1 times [2023-02-18 04:57:23,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:57:23,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067184941] [2023-02-18 04:57:23,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:57:23,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 04:57:23,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:57:23,311 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 04:57:23,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2023-02-18 04:57:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:57:23,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 04:57:23,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:57:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-02-18 04:57:23,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:57:24,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 87 [2023-02-18 04:57:24,905 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 6 proven. 92 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-02-18 04:57:24,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:57:24,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067184941] [2023-02-18 04:57:24,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067184941] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:57:24,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:57:24,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-02-18 04:57:24,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945757447] [2023-02-18 04:57:24,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:57:24,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-18 04:57:24,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:57:24,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-18 04:57:24,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2023-02-18 04:57:24,907 INFO L87 Difference]: Start difference. First operand 37161 states and 48616 transitions. Second operand has 28 states, 27 states have (on average 4.703703703703703) internal successors, (127), 28 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:57:45,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:57:45,348 INFO L93 Difference]: Finished difference Result 94696 states and 123316 transitions. [2023-02-18 04:57:45,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-02-18 04:57:45,351 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.703703703703703) internal successors, (127), 28 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-02-18 04:57:45,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:57:45,471 INFO L225 Difference]: With dead ends: 94696 [2023-02-18 04:57:45,471 INFO L226 Difference]: Without dead ends: 94696 [2023-02-18 04:57:45,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2742 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=1529, Invalid=7027, Unknown=0, NotChecked=0, Total=8556 [2023-02-18 04:57:45,472 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 1655 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 4892 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 5075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 4892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:57:45,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 2757 Invalid, 5075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 4892 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2023-02-18 04:57:45,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94696 states. [2023-02-18 04:57:46,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94696 to 80384. [2023-02-18 04:57:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80384 states, 80378 states have (on average 1.3129712110278933) internal successors, (105534), 80383 states have internal predecessors, (105534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:57:46,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80384 states to 80384 states and 105534 transitions. [2023-02-18 04:57:46,649 INFO L78 Accepts]: Start accepts. Automaton has 80384 states and 105534 transitions. Word has length 88 [2023-02-18 04:57:46,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:57:46,649 INFO L495 AbstractCegarLoop]: Abstraction has 80384 states and 105534 transitions. [2023-02-18 04:57:46,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.703703703703703) internal successors, (127), 28 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:57:46,650 INFO L276 IsEmpty]: Start isEmpty. Operand 80384 states and 105534 transitions. [2023-02-18 04:57:46,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-02-18 04:57:46,652 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:57:46,652 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1] [2023-02-18 04:57:46,662 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 (48)] Forceful destruction successful, exit code 0 [2023-02-18 04:57:46,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 04:57:46,853 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 04:57:46,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:57:46,854 INFO L85 PathProgramCache]: Analyzing trace with hash 2084926986, now seen corresponding path program 4 times [2023-02-18 04:57:46,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 04:57:46,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409952417] [2023-02-18 04:57:46,854 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 04:57:46,854 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 [2023-02-18 04:57:46,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 04:57:46,855 INFO L229 MonitoredProcess]: Starting monitored process 49 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) [2023-02-18 04:57:46,856 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 (49)] Waiting until timeout for monitored process [2023-02-18 04:57:47,044 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 04:57:47,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:57:47,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-18 04:57:47,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:57:47,069 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 8 treesize of output 7 [2023-02-18 04:57:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:57:47,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:57:54,554 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:57:54,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 04:57:54,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409952417] [2023-02-18 04:57:54,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409952417] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:57:54,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:57:54,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2023-02-18 04:57:54,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246797248] [2023-02-18 04:57:54,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:57:54,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-02-18 04:57:54,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 04:57:54,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-02-18 04:57:54,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=854, Invalid=2452, Unknown=0, NotChecked=0, Total=3306 [2023-02-18 04:57:54,557 INFO L87 Difference]: Start difference. First operand 80384 states and 105534 transitions. Second operand has 58 states, 57 states have (on average 3.263157894736842) internal successors, (186), 58 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 04:58:08,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:58:09,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:58:11,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:58:18,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:58:20,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:58:25,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:58:27,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:58:32,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:58:34,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:58:39,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:58:41,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:58:46,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:58:48,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:58:54,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:58:56,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:01,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:03,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:08,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:10,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:15,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:17,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:22,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:24,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:29,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:31,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:36,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:38,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:42,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:44,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:48,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:51,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:54,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 04:59:58,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 05:00:02,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 05:00:06,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-18 05:00:11,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:00:11,580 INFO L93 Difference]: Finished difference Result 328338 states and 430104 transitions. [2023-02-18 05:00:11,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-02-18 05:00:11,582 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.263157894736842) internal successors, (186), 58 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-02-18 05:00:11,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:00:12,079 INFO L225 Difference]: With dead ends: 328338 [2023-02-18 05:00:12,079 INFO L226 Difference]: Without dead ends: 328338 [2023-02-18 05:00:12,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4072 ImplicationChecksByTransitivity, 57.5s TimeCoverageRelationStatistics Valid=4670, Invalid=10582, Unknown=0, NotChecked=0, Total=15252 [2023-02-18 05:00:12,081 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 9497 mSDsluCounter, 12024 mSDsCounter, 0 mSdLazyCounter, 11007 mSolverCounterSat, 287 mSolverCounterUnsat, 33 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9497 SdHoareTripleChecker+Valid, 12504 SdHoareTripleChecker+Invalid, 11327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 11007 IncrementalHoareTripleChecker+Invalid, 33 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.6s IncrementalHoareTripleChecker+Time [2023-02-18 05:00:12,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9497 Valid, 12504 Invalid, 11327 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [287 Valid, 11007 Invalid, 33 Unknown, 0 Unchecked, 85.6s Time] [2023-02-18 05:00:12,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328338 states. [2023-02-18 05:00:15,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328338 to 80480. [2023-02-18 05:00:15,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80480 states, 80474 states have (on average 1.3128960906628229) internal successors, (105654), 80479 states have internal predecessors, (105654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:00:15,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80480 states to 80480 states and 105654 transitions. [2023-02-18 05:00:15,180 INFO L78 Accepts]: Start accepts. Automaton has 80480 states and 105654 transitions. Word has length 94 [2023-02-18 05:00:15,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:00:15,181 INFO L495 AbstractCegarLoop]: Abstraction has 80480 states and 105654 transitions. [2023-02-18 05:00:15,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.263157894736842) internal successors, (186), 58 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:00:15,181 INFO L276 IsEmpty]: Start isEmpty. Operand 80480 states and 105654 transitions. [2023-02-18 05:00:15,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-02-18 05:00:15,183 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:00:15,183 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:00:15,194 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 (49)] Forceful destruction successful, exit code 0 [2023-02-18 05:00:15,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:00:15,384 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 05:00:15,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:00:15,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1753660026, now seen corresponding path program 2 times [2023-02-18 05:00:15,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:00:15,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734145731] [2023-02-18 05:00:15,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 05:00:15,385 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 [2023-02-18 05:00:15,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:00:15,386 INFO L229 MonitoredProcess]: Starting monitored process 50 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) [2023-02-18 05:00:15,551 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 (50)] Waiting until timeout for monitored process [2023-02-18 05:00:15,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 05:00:15,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 05:00:15,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-18 05:00:15,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:00:15,690 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 8 treesize of output 7 [2023-02-18 05:00:15,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 05:00:15,702 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:00:15,703 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 1 case distinctions, treesize of input 21 treesize of output 59 [2023-02-18 05:00:15,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 05:00:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-02-18 05:00:17,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 05:00:17,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 05:00:20,189 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 05:00:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-02-18 05:00:20,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:00:20,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734145731] [2023-02-18 05:00:20,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734145731] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 05:00:20,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 05:00:20,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2023-02-18 05:00:20,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569422205] [2023-02-18 05:00:20,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 05:00:20,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 05:00:20,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:00:20,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 05:00:20,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-18 05:00:20,195 INFO L87 Difference]: Start difference. First operand 80480 states and 105654 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:00:20,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:00:20,892 INFO L93 Difference]: Finished difference Result 80479 states and 103526 transitions. [2023-02-18 05:00:20,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 05:00:20,895 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-02-18 05:00:20,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:00:20,984 INFO L225 Difference]: With dead ends: 80479 [2023-02-18 05:00:20,984 INFO L226 Difference]: Without dead ends: 80479 [2023-02-18 05:00:20,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-02-18 05:00:20,985 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 160 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 05:00:20,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 56 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 05:00:21,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80479 states. [2023-02-18 05:00:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80479 to 79417. [2023-02-18 05:00:21,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79417 states, 79412 states have (on average 1.2868584093084168) internal successors, (102192), 79416 states have internal predecessors, (102192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:00:21,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79417 states to 79417 states and 102192 transitions. [2023-02-18 05:00:21,906 INFO L78 Accepts]: Start accepts. Automaton has 79417 states and 102192 transitions. Word has length 95 [2023-02-18 05:00:21,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:00:21,906 INFO L495 AbstractCegarLoop]: Abstraction has 79417 states and 102192 transitions. [2023-02-18 05:00:21,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:00:21,907 INFO L276 IsEmpty]: Start isEmpty. Operand 79417 states and 102192 transitions. [2023-02-18 05:00:21,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-02-18 05:00:21,911 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:00:21,911 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:00:21,921 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 (50)] Forceful destruction successful, exit code 0 [2023-02-18 05:00:22,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:00:22,117 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 05:00:22,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:00:22,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1820009442, now seen corresponding path program 2 times [2023-02-18 05:00:22,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:00:22,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903308908] [2023-02-18 05:00:22,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 05:00:22,118 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 [2023-02-18 05:00:22,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:00:22,119 INFO L229 MonitoredProcess]: Starting monitored process 51 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) [2023-02-18 05:00:22,121 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 (51)] Waiting until timeout for monitored process [2023-02-18 05:00:22,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 05:00:22,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 05:00:22,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-18 05:00:22,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:00:22,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 05:00:22,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-02-18 05:00:22,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 05:00:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-02-18 05:00:22,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 05:00:24,463 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 05:00:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 38 proven. 91 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-02-18 05:00:24,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:00:24,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903308908] [2023-02-18 05:00:24,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903308908] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 05:00:24,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 05:00:24,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17] total 26 [2023-02-18 05:00:24,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225129431] [2023-02-18 05:00:24,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 05:00:24,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-18 05:00:24,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:00:24,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-18 05:00:24,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2023-02-18 05:00:24,583 INFO L87 Difference]: Start difference. First operand 79417 states and 102192 transitions. Second operand has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:00:28,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:00:28,710 INFO L93 Difference]: Finished difference Result 89431 states and 114698 transitions. [2023-02-18 05:00:28,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-18 05:00:28,712 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-02-18 05:00:28,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:00:28,822 INFO L225 Difference]: With dead ends: 89431 [2023-02-18 05:00:28,822 INFO L226 Difference]: Without dead ends: 89431 [2023-02-18 05:00:28,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=340, Invalid=1466, Unknown=0, NotChecked=0, Total=1806 [2023-02-18 05:00:28,823 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 803 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-02-18 05:00:28,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 923 Invalid, 1779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1709 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-02-18 05:00:28,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89431 states. [2023-02-18 05:00:29,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89431 to 55471. [2023-02-18 05:00:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55471 states, 55466 states have (on average 1.2818483395233116) internal successors, (71099), 55470 states have internal predecessors, (71099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:00:29,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55471 states to 55471 states and 71099 transitions. [2023-02-18 05:00:29,699 INFO L78 Accepts]: Start accepts. Automaton has 55471 states and 71099 transitions. Word has length 96 [2023-02-18 05:00:29,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:00:29,700 INFO L495 AbstractCegarLoop]: Abstraction has 55471 states and 71099 transitions. [2023-02-18 05:00:29,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:00:29,700 INFO L276 IsEmpty]: Start isEmpty. Operand 55471 states and 71099 transitions. [2023-02-18 05:00:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-02-18 05:00:29,704 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:00:29,704 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:00:29,714 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 (51)] Ended with exit code 0 [2023-02-18 05:00:29,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:00:29,909 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 05:00:29,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:00:29,909 INFO L85 PathProgramCache]: Analyzing trace with hash 50556436, now seen corresponding path program 10 times [2023-02-18 05:00:29,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:00:29,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862249314] [2023-02-18 05:00:29,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 05:00:29,910 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 [2023-02-18 05:00:29,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:00:29,911 INFO L229 MonitoredProcess]: Starting monitored process 52 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) [2023-02-18 05:00:29,912 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 (52)] Waiting until timeout for monitored process [2023-02-18 05:00:30,356 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 05:00:30,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 05:00:30,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-18 05:00:30,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:00:30,397 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 8 treesize of output 7 [2023-02-18 05:00:30,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2023-02-18 05:00:31,677 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 12 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:00:31,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 05:00:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 12 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:00:37,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:00:37,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862249314] [2023-02-18 05:00:37,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862249314] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 05:00:37,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 05:00:37,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 61 [2023-02-18 05:00:37,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776741982] [2023-02-18 05:00:37,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 05:00:37,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-02-18 05:00:37,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:00:37,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-02-18 05:00:37,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=3278, Unknown=0, NotChecked=0, Total=3660 [2023-02-18 05:00:37,386 INFO L87 Difference]: Start difference. First operand 55471 states and 71099 transitions. Second operand has 61 states, 61 states have (on average 3.360655737704918) internal successors, (205), 61 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:01:52,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:01:52,384 INFO L93 Difference]: Finished difference Result 160395 states and 205633 transitions. [2023-02-18 05:01:52,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2023-02-18 05:01:52,385 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.360655737704918) internal successors, (205), 61 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-02-18 05:01:52,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:01:52,606 INFO L225 Difference]: With dead ends: 160395 [2023-02-18 05:01:52,606 INFO L226 Difference]: Without dead ends: 160390 [2023-02-18 05:01:52,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15231 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=4573, Invalid=48557, Unknown=0, NotChecked=0, Total=53130 [2023-02-18 05:01:52,609 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 13464 mSDsluCounter, 9580 mSDsCounter, 0 mSdLazyCounter, 23808 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13464 SdHoareTripleChecker+Valid, 9985 SdHoareTripleChecker+Invalid, 24063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 23808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.5s IncrementalHoareTripleChecker+Time [2023-02-18 05:01:52,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13464 Valid, 9985 Invalid, 24063 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [255 Valid, 23808 Invalid, 0 Unknown, 0 Unchecked, 46.5s Time] [2023-02-18 05:01:52,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160390 states. [2023-02-18 05:01:53,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160390 to 57680. [2023-02-18 05:01:53,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57680 states, 57675 states have (on average 1.281300390117035) internal successors, (73899), 57679 states have internal predecessors, (73899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:01:53,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57680 states to 57680 states and 73899 transitions. [2023-02-18 05:01:53,929 INFO L78 Accepts]: Start accepts. Automaton has 57680 states and 73899 transitions. Word has length 104 [2023-02-18 05:01:53,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:01:53,929 INFO L495 AbstractCegarLoop]: Abstraction has 57680 states and 73899 transitions. [2023-02-18 05:01:53,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.360655737704918) internal successors, (205), 61 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:01:53,929 INFO L276 IsEmpty]: Start isEmpty. Operand 57680 states and 73899 transitions. [2023-02-18 05:01:53,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-02-18 05:01:53,934 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:01:53,934 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:01:53,945 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 (52)] Ended with exit code 0 [2023-02-18 05:01:54,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:01:54,135 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 05:01:54,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:01:54,136 INFO L85 PathProgramCache]: Analyzing trace with hash -780458956, now seen corresponding path program 4 times [2023-02-18 05:01:54,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:01:54,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702830879] [2023-02-18 05:01:54,136 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 05:01:54,136 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 [2023-02-18 05:01:54,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:01:54,138 INFO L229 MonitoredProcess]: Starting monitored process 53 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) [2023-02-18 05:01:54,140 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 (53)] Waiting until timeout for monitored process [2023-02-18 05:01:54,373 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 05:01:54,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 05:01:54,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 05:01:54,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:01:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 147 proven. 120 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-02-18 05:01:54,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 05:01:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 147 proven. 120 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-02-18 05:01:54,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:01:54,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702830879] [2023-02-18 05:01:54,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702830879] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 05:01:54,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 05:01:54,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-02-18 05:01:54,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599525544] [2023-02-18 05:01:54,626 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 05:01:54,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-18 05:01:54,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:01:54,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-18 05:01:54,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-02-18 05:01:54,627 INFO L87 Difference]: Start difference. First operand 57680 states and 73899 transitions. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:01:56,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 05:01:56,400 INFO L93 Difference]: Finished difference Result 56600 states and 72502 transitions. [2023-02-18 05:01:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-18 05:01:56,401 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-02-18 05:01:56,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 05:01:56,461 INFO L225 Difference]: With dead ends: 56600 [2023-02-18 05:01:56,462 INFO L226 Difference]: Without dead ends: 56483 [2023-02-18 05:01:56,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2023-02-18 05:01:56,462 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 278 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-02-18 05:01:56,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 486 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-02-18 05:01:56,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56483 states. [2023-02-18 05:01:57,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56483 to 56386. [2023-02-18 05:01:57,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56386 states, 56381 states have (on average 1.2816551675209733) internal successors, (72261), 56385 states have internal predecessors, (72261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:01:57,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56386 states to 56386 states and 72261 transitions. [2023-02-18 05:01:57,455 INFO L78 Accepts]: Start accepts. Automaton has 56386 states and 72261 transitions. Word has length 105 [2023-02-18 05:01:57,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 05:01:57,456 INFO L495 AbstractCegarLoop]: Abstraction has 56386 states and 72261 transitions. [2023-02-18 05:01:57,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 05:01:57,456 INFO L276 IsEmpty]: Start isEmpty. Operand 56386 states and 72261 transitions. [2023-02-18 05:01:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-02-18 05:01:57,460 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 05:01:57,460 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 05:01:57,469 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 (53)] Ended with exit code 0 [2023-02-18 05:01:57,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:01:57,660 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-18 05:01:57,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 05:01:57,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1218827927, now seen corresponding path program 11 times [2023-02-18 05:01:57,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 05:01:57,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297553123] [2023-02-18 05:01:57,661 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 05:01:57,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 05:01:57,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 05:01:57,662 INFO L229 MonitoredProcess]: Starting monitored process 54 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) [2023-02-18 05:01:57,663 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 (54)] Waiting until timeout for monitored process [2023-02-18 05:01:59,982 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-02-18 05:01:59,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 05:02:00,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-18 05:02:00,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 05:02:00,030 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 8 treesize of output 7 [2023-02-18 05:02:00,778 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 05:02:00,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 95 [2023-02-18 05:02:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 613 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:02:08,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 05:02:26,245 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 613 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 05:02:26,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 05:02:26,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297553123] [2023-02-18 05:02:26,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297553123] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 05:02:26,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 05:02:26,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34] total 66 [2023-02-18 05:02:26,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842187237] [2023-02-18 05:02:26,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 05:02:26,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-02-18 05:02:26,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 05:02:26,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-02-18 05:02:26,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=3779, Unknown=0, NotChecked=0, Total=4422 [2023-02-18 05:02:26,247 INFO L87 Difference]: Start difference. First operand 56386 states and 72261 transitions. Second operand has 67 states, 66 states have (on average 3.242424242424242) internal successors, (214), 67 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)