./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0102-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 574ddb4e 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/memsafety/test-0102-1.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 fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 20:23:30,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 20:23:30,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 20:23:30,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 20:23:30,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 20:23:30,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 20:23:30,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 20:23:30,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 20:23:30,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 20:23:30,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 20:23:30,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 20:23:30,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 20:23:30,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 20:23:30,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 20:23:30,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 20:23:30,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 20:23:30,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 20:23:30,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 20:23:30,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 20:23:30,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 20:23:30,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 20:23:30,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 20:23:30,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 20:23:30,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 20:23:30,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 20:23:30,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 20:23:30,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 20:23:30,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 20:23:30,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 20:23:30,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 20:23:30,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 20:23:30,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 20:23:30,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 20:23:30,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 20:23:30,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 20:23:30,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 20:23:30,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 20:23:30,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 20:23:30,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 20:23:30,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 20:23:30,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 20:23:30,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 20:23:30,989 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 20:23:30,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 20:23:30,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 20:23:30,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 20:23:30,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 20:23:30,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 20:23:30,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 20:23:30,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 20:23:30,991 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 20:23:30,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 20:23:30,992 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 20:23:30,992 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 20:23:30,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 20:23:30,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 20:23:30,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 20:23:30,993 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 20:23:30,993 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 20:23:30,993 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 20:23:30,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 20:23:30,994 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 20:23:30,994 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 20:23:30,994 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 20:23:30,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 20:23:30,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 20:23:30,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 20:23:30,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 20:23:30,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 20:23:30,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 20:23:30,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 20:23:30,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 20:23:30,995 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 20:23:30,996 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 20:23:30,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 20:23:30,996 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 20:23:30,996 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f [2023-02-18 20:23:31,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 20:23:31,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 20:23:31,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 20:23:31,209 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 20:23:31,210 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 20:23:31,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0102-1.i [2023-02-18 20:23:32,193 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 20:23:32,456 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 20:23:32,458 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0102-1.i [2023-02-18 20:23:32,466 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2a1ac280/d952a0719a2d4e2782ffb456f9250553/FLAGb204be13a [2023-02-18 20:23:32,475 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2a1ac280/d952a0719a2d4e2782ffb456f9250553 [2023-02-18 20:23:32,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 20:23:32,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 20:23:32,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 20:23:32,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 20:23:32,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 20:23:32,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:23:32" (1/1) ... [2023-02-18 20:23:32,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51cb7f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:23:32, skipping insertion in model container [2023-02-18 20:23:32,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:23:32" (1/1) ... [2023-02-18 20:23:32,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 20:23:32,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 20:23:32,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 20:23:32,726 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 20:23:32,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31d4204f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:23:32, skipping insertion in model container [2023-02-18 20:23:32,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 20:23:32,728 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-18 20:23:32,729 INFO L158 Benchmark]: Toolchain (without parser) took 250.37ms. Allocated memory is still 148.9MB. Free memory was 110.2MB in the beginning and 98.4MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 20:23:32,730 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 148.9MB. Free memory was 90.2MB in the beginning and 90.1MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 20:23:32,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.92ms. Allocated memory is still 148.9MB. Free memory was 110.2MB in the beginning and 98.4MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 20:23:32,732 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 148.9MB. Free memory was 90.2MB in the beginning and 90.1MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.92ms. Allocated memory is still 148.9MB. Free memory was 110.2MB in the beginning and 98.4MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 551]: 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/memsafety/test-0102-1.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 fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 20:23:34,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 20:23:34,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 20:23:34,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 20:23:34,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 20:23:34,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 20:23:34,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 20:23:34,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 20:23:34,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 20:23:34,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 20:23:34,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 20:23:34,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 20:23:34,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 20:23:34,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 20:23:34,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 20:23:34,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 20:23:34,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 20:23:34,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 20:23:34,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 20:23:34,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 20:23:34,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 20:23:34,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 20:23:34,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 20:23:34,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 20:23:34,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 20:23:34,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 20:23:34,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 20:23:34,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 20:23:34,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 20:23:34,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 20:23:34,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 20:23:34,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 20:23:34,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 20:23:34,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 20:23:34,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 20:23:34,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 20:23:34,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 20:23:34,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 20:23:34,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 20:23:34,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 20:23:34,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 20:23:34,227 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-18 20:23:34,242 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 20:23:34,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 20:23:34,242 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 20:23:34,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 20:23:34,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 20:23:34,243 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 20:23:34,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 20:23:34,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 20:23:34,244 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 20:23:34,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 20:23:34,244 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 20:23:34,244 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 20:23:34,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 20:23:34,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 20:23:34,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 20:23:34,245 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 20:23:34,245 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 20:23:34,245 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 20:23:34,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 20:23:34,245 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 20:23:34,245 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-18 20:23:34,245 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-18 20:23:34,245 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 20:23:34,245 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 20:23:34,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 20:23:34,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 20:23:34,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 20:23:34,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 20:23:34,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 20:23:34,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 20:23:34,246 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-18 20:23:34,246 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-18 20:23:34,247 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 20:23:34,247 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 20:23:34,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 20:23:34,247 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-18 20:23:34,247 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 20:23:34,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f [2023-02-18 20:23:34,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 20:23:34,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 20:23:34,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 20:23:34,499 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 20:23:34,499 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 20:23:34,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0102-1.i [2023-02-18 20:23:35,525 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 20:23:35,757 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 20:23:35,758 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0102-1.i [2023-02-18 20:23:35,778 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81053ae10/f3c4e88a39ff4394aff1b5fcb9a80988/FLAGb1bd3f0d4 [2023-02-18 20:23:35,788 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81053ae10/f3c4e88a39ff4394aff1b5fcb9a80988 [2023-02-18 20:23:35,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 20:23:35,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 20:23:35,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 20:23:35,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 20:23:35,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 20:23:35,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:23:35" (1/1) ... [2023-02-18 20:23:35,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b221e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:23:35, skipping insertion in model container [2023-02-18 20:23:35,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:23:35" (1/1) ... [2023-02-18 20:23:35,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 20:23:35,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 20:23:35,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 20:23:36,010 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-18 20:23:36,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 20:23:36,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 20:23:36,071 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 20:23:36,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 20:23:36,129 INFO L208 MainTranslator]: Completed translation [2023-02-18 20:23:36,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:23:36 WrapperNode [2023-02-18 20:23:36,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 20:23:36,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 20:23:36,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 20:23:36,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 20:23:36,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:23:36" (1/1) ... [2023-02-18 20:23:36,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:23:36" (1/1) ... [2023-02-18 20:23:36,192 INFO L138 Inliner]: procedures = 136, calls = 38, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 86 [2023-02-18 20:23:36,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 20:23:36,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 20:23:36,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 20:23:36,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 20:23:36,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:23:36" (1/1) ... [2023-02-18 20:23:36,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:23:36" (1/1) ... [2023-02-18 20:23:36,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:23:36" (1/1) ... [2023-02-18 20:23:36,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:23:36" (1/1) ... [2023-02-18 20:23:36,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:23:36" (1/1) ... [2023-02-18 20:23:36,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:23:36" (1/1) ... [2023-02-18 20:23:36,231 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:23:36" (1/1) ... [2023-02-18 20:23:36,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:23:36" (1/1) ... [2023-02-18 20:23:36,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 20:23:36,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 20:23:36,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 20:23:36,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 20:23:36,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:23:36" (1/1) ... [2023-02-18 20:23:36,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 20:23:36,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 20:23:36,288 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 20:23:36,317 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 20:23:36,342 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-02-18 20:23:36,343 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-02-18 20:23:36,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 20:23:36,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 20:23:36,344 INFO L130 BoogieDeclarations]: Found specification of procedure create_sub_list [2023-02-18 20:23:36,344 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sub_list [2023-02-18 20:23:36,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 20:23:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-18 20:23:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-18 20:23:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_sub [2023-02-18 20:23:36,345 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_sub [2023-02-18 20:23:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-18 20:23:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 20:23:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-18 20:23:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-18 20:23:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 20:23:36,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 20:23:36,498 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 20:23:36,500 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 20:23:36,728 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 20:23:36,734 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 20:23:36,734 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-18 20:23:36,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:23:36 BoogieIcfgContainer [2023-02-18 20:23:36,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 20:23:36,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 20:23:36,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 20:23:36,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 20:23:36,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 08:23:35" (1/3) ... [2023-02-18 20:23:36,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7811455b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 08:23:36, skipping insertion in model container [2023-02-18 20:23:36,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:23:36" (2/3) ... [2023-02-18 20:23:36,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7811455b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 08:23:36, skipping insertion in model container [2023-02-18 20:23:36,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:23:36" (3/3) ... [2023-02-18 20:23:36,742 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0102-1.i [2023-02-18 20:23:36,752 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 20:23:36,753 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2023-02-18 20:23:36,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 20:23:36,793 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;@1a8201ed, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 20:23:36,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-02-18 20:23:36,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 46 states have (on average 1.891304347826087) internal successors, (87), 77 states have internal predecessors, (87), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 20:23:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-18 20:23:36,800 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:23:36,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 20:23:36,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 20:23:36,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:23:36,805 INFO L85 PathProgramCache]: Analyzing trace with hash 106012329, now seen corresponding path program 1 times [2023-02-18 20:23:36,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:23:36,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111802136] [2023-02-18 20:23:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:23:36,814 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 20:23:36,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:23:36,817 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 20:23:36,818 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 20:23:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:23:36,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 20:23:36,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:23:36,895 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 20:23:36,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:23:36,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:23:36,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111802136] [2023-02-18 20:23:36,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111802136] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:23:36,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:23:36,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 20:23:36,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333924069] [2023-02-18 20:23:36,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:23:36,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 20:23:36,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:23:36,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 20:23:36,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 20:23:36,933 INFO L87 Difference]: Start difference. First operand has 87 states, 46 states have (on average 1.891304347826087) internal successors, (87), 77 states have internal predecessors, (87), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:23:36,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:23:36,954 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2023-02-18 20:23:36,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 20:23:36,956 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-02-18 20:23:36,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:23:36,962 INFO L225 Difference]: With dead ends: 87 [2023-02-18 20:23:36,962 INFO L226 Difference]: Without dead ends: 85 [2023-02-18 20:23:36,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 20:23:36,966 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 20:23:36,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 20:23:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-18 20:23:36,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-02-18 20:23:36,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 45 states have (on average 1.7555555555555555) internal successors, (79), 75 states have internal predecessors, (79), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 20:23:37,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2023-02-18 20:23:37,001 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 5 [2023-02-18 20:23:37,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:23:37,001 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2023-02-18 20:23:37,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:23:37,002 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2023-02-18 20:23:37,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 20:23:37,002 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:23:37,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:23:37,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-18 20:23:37,209 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 20:23:37,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 20:23:37,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:23:37,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1219357814, now seen corresponding path program 1 times [2023-02-18 20:23:37,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:23:37,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641497475] [2023-02-18 20:23:37,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:23:37,222 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 20:23:37,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:23:37,224 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 20:23:37,238 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 20:23:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:23:37,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 20:23:37,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:23:37,351 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 20:23:37,362 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 20:23:37,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:23:37,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:23:37,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641497475] [2023-02-18 20:23:37,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641497475] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:23:37,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:23:37,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 20:23:37,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281792012] [2023-02-18 20:23:37,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:23:37,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 20:23:37,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:23:37,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 20:23:37,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 20:23:37,366 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:37,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:23:37,526 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2023-02-18 20:23:37,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 20:23:37,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-18 20:23:37,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:23:37,528 INFO L225 Difference]: With dead ends: 91 [2023-02-18 20:23:37,528 INFO L226 Difference]: Without dead ends: 91 [2023-02-18 20:23:37,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 20:23:37,529 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 39 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 20:23:37,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 190 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 20:23:37,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-02-18 20:23:37,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2023-02-18 20:23:37,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 45 states have (on average 1.711111111111111) internal successors, (77), 73 states have internal predecessors, (77), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 20:23:37,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2023-02-18 20:23:37,536 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 7 [2023-02-18 20:23:37,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:23:37,536 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2023-02-18 20:23:37,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:37,537 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2023-02-18 20:23:37,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 20:23:37,537 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:23:37,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:23:37,577 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 (3)] Ended with exit code 0 [2023-02-18 20:23:37,744 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 20:23:37,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 20:23:37,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:23:37,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1219357813, now seen corresponding path program 1 times [2023-02-18 20:23:37,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:23:37,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720451831] [2023-02-18 20:23:37,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:23:37,746 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 20:23:37,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:23:37,750 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 20:23:37,751 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 20:23:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:23:37,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 20:23:37,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:23:37,841 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 20:23:37,853 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 20:23:37,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:23:37,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:23:37,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720451831] [2023-02-18 20:23:37,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720451831] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:23:37,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:23:37,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 20:23:37,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060549806] [2023-02-18 20:23:37,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:23:37,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 20:23:37,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:23:37,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 20:23:37,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 20:23:37,856 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:38,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:23:38,012 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2023-02-18 20:23:38,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 20:23:38,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-18 20:23:38,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:23:38,013 INFO L225 Difference]: With dead ends: 87 [2023-02-18 20:23:38,013 INFO L226 Difference]: Without dead ends: 87 [2023-02-18 20:23:38,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 20:23:38,014 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 5 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 20:23:38,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 254 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 20:23:38,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-18 20:23:38,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2023-02-18 20:23:38,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 75 states have internal predecessors, (80), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 20:23:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2023-02-18 20:23:38,021 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 7 [2023-02-18 20:23:38,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:23:38,021 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2023-02-18 20:23:38,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:38,021 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2023-02-18 20:23:38,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 20:23:38,022 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:23:38,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:23:38,045 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 20:23:38,229 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 20:23:38,230 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting create_sub_listErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 20:23:38,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:23:38,230 INFO L85 PathProgramCache]: Analyzing trace with hash -778231822, now seen corresponding path program 1 times [2023-02-18 20:23:38,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:23:38,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130466483] [2023-02-18 20:23:38,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:23:38,231 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 20:23:38,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:23:38,232 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 20:23:38,233 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 20:23:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:23:38,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 20:23:38,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:23:38,292 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 20:23:38,294 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 20:23:38,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:23:38,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:23:38,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130466483] [2023-02-18 20:23:38,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130466483] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:23:38,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:23:38,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 20:23:38,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603598735] [2023-02-18 20:23:38,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:23:38,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 20:23:38,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:23:38,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 20:23:38,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 20:23:38,296 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:38,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:23:38,366 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2023-02-18 20:23:38,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 20:23:38,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-18 20:23:38,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:23:38,367 INFO L225 Difference]: With dead ends: 86 [2023-02-18 20:23:38,367 INFO L226 Difference]: Without dead ends: 86 [2023-02-18 20:23:38,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 20:23:38,368 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 20:23:38,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 132 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 20:23:38,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-18 20:23:38,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2023-02-18 20:23:38,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 48 states have (on average 1.6458333333333333) internal successors, (79), 74 states have internal predecessors, (79), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 20:23:38,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2023-02-18 20:23:38,372 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 11 [2023-02-18 20:23:38,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:23:38,373 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2023-02-18 20:23:38,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:38,373 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2023-02-18 20:23:38,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 20:23:38,373 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:23:38,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:23:38,395 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 20:23:38,580 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 20:23:38,581 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting create_sub_listErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 20:23:38,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:23:38,581 INFO L85 PathProgramCache]: Analyzing trace with hash -778231821, now seen corresponding path program 1 times [2023-02-18 20:23:38,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:23:38,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829670573] [2023-02-18 20:23:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:23:38,582 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 20:23:38,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:23:38,584 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 20:23:38,586 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 20:23:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:23:38,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 20:23:38,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:23:38,644 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 20:23:38,646 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 20:23:38,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:23:38,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:23:38,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829670573] [2023-02-18 20:23:38,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829670573] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:23:38,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:23:38,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 20:23:38,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485291151] [2023-02-18 20:23:38,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:23:38,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 20:23:38,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:23:38,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 20:23:38,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 20:23:38,648 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:38,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:23:38,717 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2023-02-18 20:23:38,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 20:23:38,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-18 20:23:38,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:23:38,718 INFO L225 Difference]: With dead ends: 85 [2023-02-18 20:23:38,718 INFO L226 Difference]: Without dead ends: 85 [2023-02-18 20:23:38,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 20:23:38,719 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 5 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 20:23:38,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 136 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 20:23:38,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-18 20:23:38,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2023-02-18 20:23:38,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 48 states have (on average 1.625) internal successors, (78), 73 states have internal predecessors, (78), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 20:23:38,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2023-02-18 20:23:38,722 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 11 [2023-02-18 20:23:38,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:23:38,723 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2023-02-18 20:23:38,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:38,723 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2023-02-18 20:23:38,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 20:23:38,723 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:23:38,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:23:38,739 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 20:23:38,930 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 20:23:38,931 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting list_add_tailErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 20:23:38,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:23:38,931 INFO L85 PathProgramCache]: Analyzing trace with hash -70636768, now seen corresponding path program 1 times [2023-02-18 20:23:38,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:23:38,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120192778] [2023-02-18 20:23:38,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:23:38,932 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 20:23:38,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:23:38,933 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 20:23:38,936 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 (7)] Waiting until timeout for monitored process [2023-02-18 20:23:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:23:39,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-18 20:23:39,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:23:39,034 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 20:23:39,036 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 20:23:39,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:23:39,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 20:23:39,066 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:23:39,066 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 20:23:39,089 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 20:23:39,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:23:39,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:23:39,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120192778] [2023-02-18 20:23:39,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120192778] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:23:39,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:23:39,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 20:23:39,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238349658] [2023-02-18 20:23:39,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:23:39,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 20:23:39,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:23:39,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 20:23:39,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-18 20:23:39,092 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:39,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:23:39,455 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2023-02-18 20:23:39,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 20:23:39,456 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-18 20:23:39,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:23:39,457 INFO L225 Difference]: With dead ends: 112 [2023-02-18 20:23:39,457 INFO L226 Difference]: Without dead ends: 112 [2023-02-18 20:23:39,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-02-18 20:23:39,458 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 54 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 20:23:39,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 331 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 20:23:39,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-18 20:23:39,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 102. [2023-02-18 20:23:39,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 63 states have (on average 1.6349206349206349) internal successors, (103), 89 states have internal predecessors, (103), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 20:23:39,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2023-02-18 20:23:39,462 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 14 [2023-02-18 20:23:39,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:23:39,463 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2023-02-18 20:23:39,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:39,463 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2023-02-18 20:23:39,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 20:23:39,463 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:23:39,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:23:39,493 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 20:23:39,672 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 20:23:39,672 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting list_add_tailErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 20:23:39,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:23:39,673 INFO L85 PathProgramCache]: Analyzing trace with hash -70636769, now seen corresponding path program 1 times [2023-02-18 20:23:39,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:23:39,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283784879] [2023-02-18 20:23:39,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:23:39,673 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 20:23:39,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:23:39,675 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 20:23:39,677 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 20:23:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:23:39,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 20:23:39,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:23:39,764 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 20:23:39,776 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:23:39,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2023-02-18 20:23:39,825 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 20:23:39,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:23:39,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:23:39,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283784879] [2023-02-18 20:23:39,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283784879] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:23:39,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:23:39,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 20:23:39,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846035459] [2023-02-18 20:23:39,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:23:39,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 20:23:39,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:23:39,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 20:23:39,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-18 20:23:39,827 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:40,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:23:40,123 INFO L93 Difference]: Finished difference Result 131 states and 146 transitions. [2023-02-18 20:23:40,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 20:23:40,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-18 20:23:40,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:23:40,124 INFO L225 Difference]: With dead ends: 131 [2023-02-18 20:23:40,124 INFO L226 Difference]: Without dead ends: 131 [2023-02-18 20:23:40,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-02-18 20:23:40,124 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 87 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 20:23:40,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 278 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 20:23:40,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-02-18 20:23:40,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 112. [2023-02-18 20:23:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 72 states have (on average 1.6666666666666667) internal successors, (120), 98 states have internal predecessors, (120), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 20:23:40,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 134 transitions. [2023-02-18 20:23:40,128 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 134 transitions. Word has length 14 [2023-02-18 20:23:40,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:23:40,128 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 134 transitions. [2023-02-18 20:23:40,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:40,128 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 134 transitions. [2023-02-18 20:23:40,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 20:23:40,132 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:23:40,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:23:40,161 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 20:23:40,340 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 20:23:40,340 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting list_add_tailErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 20:23:40,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:23:40,341 INFO L85 PathProgramCache]: Analyzing trace with hash 837542848, now seen corresponding path program 1 times [2023-02-18 20:23:40,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:23:40,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607552335] [2023-02-18 20:23:40,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:23:40,341 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 20:23:40,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:23:40,342 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 20:23:40,345 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 20:23:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:23:40,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 20:23:40,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:23:40,476 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 20:23:40,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:23:40,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:23:40,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607552335] [2023-02-18 20:23:40,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607552335] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:23:40,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:23:40,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 20:23:40,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557900640] [2023-02-18 20:23:40,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:23:40,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 20:23:40,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:23:40,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 20:23:40,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 20:23:40,478 INFO L87 Difference]: Start difference. First operand 112 states and 134 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:23:40,558 INFO L93 Difference]: Finished difference Result 111 states and 131 transitions. [2023-02-18 20:23:40,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 20:23:40,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 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 20:23:40,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:23:40,559 INFO L225 Difference]: With dead ends: 111 [2023-02-18 20:23:40,559 INFO L226 Difference]: Without dead ends: 111 [2023-02-18 20:23:40,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 20:23:40,560 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 27 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 20:23:40,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 169 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 20:23:40,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-02-18 20:23:40,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-02-18 20:23:40,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 72 states have (on average 1.625) internal successors, (117), 97 states have internal predecessors, (117), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 20:23:40,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2023-02-18 20:23:40,563 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 16 [2023-02-18 20:23:40,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:23:40,563 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2023-02-18 20:23:40,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:40,564 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2023-02-18 20:23:40,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 20:23:40,564 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:23:40,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:23:40,578 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 (9)] Forceful destruction successful, exit code 0 [2023-02-18 20:23:40,777 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 20:23:40,777 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting list_add_tailErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 20:23:40,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:23:40,778 INFO L85 PathProgramCache]: Analyzing trace with hash 837542849, now seen corresponding path program 1 times [2023-02-18 20:23:40,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:23:40,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901411783] [2023-02-18 20:23:40,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:23:40,778 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 20:23:40,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:23:40,779 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 20:23:40,782 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 20:23:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:23:40,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 20:23:40,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:23:40,953 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 20:23:40,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:23:40,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:23:40,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901411783] [2023-02-18 20:23:40,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901411783] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:23:40,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:23:40,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-18 20:23:40,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989538792] [2023-02-18 20:23:40,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:23:40,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 20:23:40,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:23:40,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 20:23:40,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-02-18 20:23:40,955 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:41,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:23:41,174 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2023-02-18 20:23:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 20:23:41,176 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 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 20:23:41,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:23:41,177 INFO L225 Difference]: With dead ends: 119 [2023-02-18 20:23:41,177 INFO L226 Difference]: Without dead ends: 119 [2023-02-18 20:23:41,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-02-18 20:23:41,177 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 96 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 20:23:41,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 511 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 20:23:41,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-02-18 20:23:41,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2023-02-18 20:23:41,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 72 states have (on average 1.6111111111111112) internal successors, (116), 97 states have internal predecessors, (116), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 20:23:41,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 130 transitions. [2023-02-18 20:23:41,181 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 130 transitions. Word has length 16 [2023-02-18 20:23:41,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:23:41,181 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 130 transitions. [2023-02-18 20:23:41,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:41,181 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 130 transitions. [2023-02-18 20:23:41,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 20:23:41,182 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:23:41,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:23:41,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-02-18 20:23:41,389 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 20:23:41,389 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting list_add_tailErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 20:23:41,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:23:41,390 INFO L85 PathProgramCache]: Analyzing trace with hash 194024551, now seen corresponding path program 1 times [2023-02-18 20:23:41,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:23:41,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646326381] [2023-02-18 20:23:41,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:23:41,390 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 20:23:41,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:23:41,393 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 20:23:41,396 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 20:23:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:23:41,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 20:23:41,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:23:41,473 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 20:23:41,487 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 20:23:41,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:23:41,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:23:41,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646326381] [2023-02-18 20:23:41,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646326381] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:23:41,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:23:41,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 20:23:41,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201554940] [2023-02-18 20:23:41,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:23:41,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 20:23:41,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:23:41,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 20:23:41,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 20:23:41,490 INFO L87 Difference]: Start difference. First operand 111 states and 130 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:41,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:23:41,666 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2023-02-18 20:23:41,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 20:23:41,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-18 20:23:41,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:23:41,667 INFO L225 Difference]: With dead ends: 118 [2023-02-18 20:23:41,667 INFO L226 Difference]: Without dead ends: 118 [2023-02-18 20:23:41,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-18 20:23:41,667 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 49 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 20:23:41,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 251 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 20:23:41,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-02-18 20:23:41,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2023-02-18 20:23:41,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 72 states have (on average 1.5416666666666667) internal successors, (111), 96 states have internal predecessors, (111), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 20:23:41,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2023-02-18 20:23:41,670 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 17 [2023-02-18 20:23:41,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:23:41,670 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2023-02-18 20:23:41,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:41,670 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2023-02-18 20:23:41,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 20:23:41,671 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:23:41,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:23:41,678 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 20:23:41,878 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 20:23:41,878 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting list_add_tailErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 20:23:41,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:23:41,879 INFO L85 PathProgramCache]: Analyzing trace with hash 194024552, now seen corresponding path program 1 times [2023-02-18 20:23:41,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:23:41,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351162684] [2023-02-18 20:23:41,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:23:41,879 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 20:23:41,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:23:41,880 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 20:23:41,883 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 20:23:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:23:41,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 20:23:41,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:23:41,984 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 20:23:41,999 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 20:23:41,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:23:41,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:23:42,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351162684] [2023-02-18 20:23:42,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351162684] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:23:42,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:23:42,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 20:23:42,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120050034] [2023-02-18 20:23:42,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:23:42,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 20:23:42,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:23:42,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 20:23:42,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 20:23:42,001 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:42,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:23:42,211 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2023-02-18 20:23:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 20:23:42,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-18 20:23:42,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:23:42,212 INFO L225 Difference]: With dead ends: 116 [2023-02-18 20:23:42,212 INFO L226 Difference]: Without dead ends: 116 [2023-02-18 20:23:42,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-18 20:23:42,213 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 36 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 20:23:42,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 271 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 20:23:42,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-18 20:23:42,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110. [2023-02-18 20:23:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 72 states have (on average 1.4861111111111112) internal successors, (107), 96 states have internal predecessors, (107), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 20:23:42,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2023-02-18 20:23:42,216 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 17 [2023-02-18 20:23:42,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:23:42,216 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2023-02-18 20:23:42,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:42,216 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2023-02-18 20:23:42,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 20:23:42,216 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:23:42,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:23:42,224 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 20:23:42,416 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 20:23:42,417 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 20:23:42,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:23:42,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1774001130, now seen corresponding path program 1 times [2023-02-18 20:23:42,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:23:42,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037919280] [2023-02-18 20:23:42,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:23:42,418 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 20:23:42,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:23:42,433 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 20:23:42,436 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 20:23:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:23:42,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-18 20:23:42,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:23:42,589 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 20:23:42,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-18 20:23:42,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 20:23:42,630 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:23:42,630 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 20:23:42,643 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 16 treesize of output 18 [2023-02-18 20:23:42,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-02-18 20:23:42,702 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 20:23:42,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:23:42,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:23:42,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037919280] [2023-02-18 20:23:42,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037919280] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:23:42,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:23:42,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-18 20:23:42,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119678633] [2023-02-18 20:23:42,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:23:42,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 20:23:42,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:23:42,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 20:23:42,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-02-18 20:23:42,704 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:43,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:23:43,181 INFO L93 Difference]: Finished difference Result 145 states and 161 transitions. [2023-02-18 20:23:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 20:23:43,181 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-18 20:23:43,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:23:43,182 INFO L225 Difference]: With dead ends: 145 [2023-02-18 20:23:43,182 INFO L226 Difference]: Without dead ends: 145 [2023-02-18 20:23:43,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-02-18 20:23:43,182 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 59 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 20:23:43,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 435 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 20:23:43,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-02-18 20:23:43,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 132. [2023-02-18 20:23:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 92 states have (on average 1.423913043478261) internal successors, (131), 116 states have internal predecessors, (131), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 20:23:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 149 transitions. [2023-02-18 20:23:43,186 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 149 transitions. Word has length 19 [2023-02-18 20:23:43,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:23:43,186 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 149 transitions. [2023-02-18 20:23:43,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:43,186 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 149 transitions. [2023-02-18 20:23:43,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 20:23:43,187 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:23:43,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:23:43,199 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 20:23:43,400 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 20:23:43,400 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 20:23:43,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:23:43,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1774001131, now seen corresponding path program 1 times [2023-02-18 20:23:43,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:23:43,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210864801] [2023-02-18 20:23:43,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:23:43,401 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 20:23:43,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:23:43,402 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 20:23:43,404 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 20:23:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:23:43,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-18 20:23:43,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:23:43,595 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 20:23:43,597 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 20:23:43,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-18 20:23:43,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-18 20:23:43,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:23:43,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 20:23:43,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:23:43,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 20:23:43,675 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:23:43,675 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 20:23:43,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 20:23:43,698 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 20 treesize of output 22 [2023-02-18 20:23:43,704 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 18 treesize of output 20 [2023-02-18 20:23:43,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-02-18 20:23:43,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2023-02-18 20:23:43,786 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 20:23:43,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 20:23:43,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:23:43,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210864801] [2023-02-18 20:23:43,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210864801] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 20:23:43,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 20:23:43,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-18 20:23:43,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340914767] [2023-02-18 20:23:43,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 20:23:43,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 20:23:43,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:23:43,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 20:23:43,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-02-18 20:23:43,789 INFO L87 Difference]: Start difference. First operand 132 states and 149 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:44,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:23:44,375 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2023-02-18 20:23:44,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 20:23:44,375 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-18 20:23:44,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:23:44,376 INFO L225 Difference]: With dead ends: 135 [2023-02-18 20:23:44,377 INFO L226 Difference]: Without dead ends: 135 [2023-02-18 20:23:44,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-02-18 20:23:44,377 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 32 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 20:23:44,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 508 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 20:23:44,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-02-18 20:23:44,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-02-18 20:23:44,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 94 states have (on average 1.4042553191489362) internal successors, (132), 119 states have internal predecessors, (132), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 20:23:44,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 150 transitions. [2023-02-18 20:23:44,381 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 150 transitions. Word has length 19 [2023-02-18 20:23:44,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:23:44,381 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 150 transitions. [2023-02-18 20:23:44,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 20:23:44,381 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 150 transitions. [2023-02-18 20:23:44,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-18 20:23:44,382 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:23:44,382 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 20:23:44,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-02-18 20:23:44,582 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 20:23:44,582 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 20:23:44,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:23:44,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1031850971, now seen corresponding path program 1 times [2023-02-18 20:23:44,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:23:44,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161667825] [2023-02-18 20:23:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:23:44,583 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 20:23:44,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:23:44,584 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 20:23:44,585 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 20:23:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:23:44,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-18 20:23:44,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:23:44,753 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 20:23:44,755 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 20:23:44,765 WARN L859 $PredicateComparison]: unable to prove that (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_448 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_448))) (= (_ bv0 1) (select |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base|)))) is different from true [2023-02-18 20:23:44,771 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 20:23:44,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:23:44,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 20:23:44,809 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:23:44,810 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 20:23:44,840 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 20:23:44,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:23:46,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:23:46,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161667825] [2023-02-18 20:23:46,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161667825] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 20:23:46,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [290217359] [2023-02-18 20:23:46,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:23:46,982 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-18 20:23:46,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-18 20:23:46,984 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-18 20:23:46,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-02-18 20:23:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:23:47,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-18 20:23:47,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:23:47,257 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 20:23:47,259 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 20:23:47,314 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 20:23:47,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:23:47,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 20:23:47,443 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:23:47,443 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 20:23:47,454 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 20:23:47,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:23:47,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [290217359] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 20:23:47,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:23:47,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12] total 13 [2023-02-18 20:23:47,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955487235] [2023-02-18 20:23:47,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:23:47,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 20:23:47,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:23:47,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 20:23:47,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=4, NotChecked=32, Total=342 [2023-02-18 20:23:47,601 INFO L87 Difference]: Start difference. First operand 135 states and 150 transitions. Second operand has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-18 20:23:50,179 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 20:23:54,229 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 20:23:56,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:23:56,929 INFO L93 Difference]: Finished difference Result 163 states and 184 transitions. [2023-02-18 20:23:56,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 20:23:56,930 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2023-02-18 20:23:56,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:23:56,930 INFO L225 Difference]: With dead ends: 163 [2023-02-18 20:23:56,930 INFO L226 Difference]: Without dead ends: 163 [2023-02-18 20:23:56,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=80, Invalid=470, Unknown=6, NotChecked=44, Total=600 [2023-02-18 20:23:56,931 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 82 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-02-18 20:23:56,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 292 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 664 Invalid, 2 Unknown, 90 Unchecked, 5.0s Time] [2023-02-18 20:23:56,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-02-18 20:23:56,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 143. [2023-02-18 20:23:56,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 100 states have (on average 1.39) internal successors, (139), 124 states have internal predecessors, (139), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2023-02-18 20:23:56,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 160 transitions. [2023-02-18 20:23:56,938 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 160 transitions. Word has length 29 [2023-02-18 20:23:56,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:23:56,939 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 160 transitions. [2023-02-18 20:23:56,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-18 20:23:56,939 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 160 transitions. [2023-02-18 20:23:56,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-18 20:23:56,940 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:23:56,940 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, 1, 1, 1, 1] [2023-02-18 20:23:56,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2023-02-18 20:23:57,155 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 (15)] Ended with exit code 0 [2023-02-18 20:23:57,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 20:23:57,345 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting list_add_tailErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 20:23:57,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:23:57,345 INFO L85 PathProgramCache]: Analyzing trace with hash 343570640, now seen corresponding path program 1 times [2023-02-18 20:23:57,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:23:57,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179570746] [2023-02-18 20:23:57,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:23:57,346 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 20:23:57,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:23:57,347 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 20:23:57,349 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 20:23:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:23:57,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-18 20:23:57,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:23:57,579 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 20:23:57,582 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 20:23:57,609 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 20:23:57,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:23:57,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 20:23:57,651 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:23:57,651 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 20:23:57,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:23:57,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 20:23:57,692 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:23:57,692 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 20:23:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:23:57,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:24:04,741 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:24:04,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 106 [2023-02-18 20:24:09,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 20:24:09,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179570746] [2023-02-18 20:24:09,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179570746] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 20:24:09,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2038035499] [2023-02-18 20:24:09,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:24:09,067 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-18 20:24:09,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-18 20:24:09,068 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-18 20:24:09,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-02-18 20:24:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:24:09,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-18 20:24:09,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:24:09,484 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 20:24:09,487 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 20:24:09,510 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 20:24:09,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:24:09,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 20:24:09,561 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:24:09,561 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 20:24:09,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:24:09,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-18 20:24:09,585 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:24:09,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-18 20:24:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 20:24:09,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 20:24:09,864 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:24:09,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 106 [2023-02-18 20:24:12,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2038035499] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 20:24:12,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 20:24:12,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 14 [2023-02-18 20:24:12,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566988604] [2023-02-18 20:24:12,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 20:24:12,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-18 20:24:12,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 20:24:12,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-18 20:24:12,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=368, Unknown=4, NotChecked=0, Total=420 [2023-02-18 20:24:12,413 INFO L87 Difference]: Start difference. First operand 143 states and 160 transitions. Second operand has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 20:24:14,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 20:24:14,090 INFO L93 Difference]: Finished difference Result 222 states and 253 transitions. [2023-02-18 20:24:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-18 20:24:14,090 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2023-02-18 20:24:14,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 20:24:14,091 INFO L225 Difference]: With dead ends: 222 [2023-02-18 20:24:14,091 INFO L226 Difference]: Without dead ends: 222 [2023-02-18 20:24:14,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 66 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=134, Invalid=854, Unknown=4, NotChecked=0, Total=992 [2023-02-18 20:24:14,092 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 150 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-02-18 20:24:14,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 335 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1017 Invalid, 1 Unknown, 0 Unchecked, 1.3s Time] [2023-02-18 20:24:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-02-18 20:24:14,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 172. [2023-02-18 20:24:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 125 states have (on average 1.36) internal successors, (170), 150 states have internal predecessors, (170), 12 states have call successors, (12), 11 states have call predecessors, (12), 10 states have return successors, (13), 10 states have call predecessors, (13), 12 states have call successors, (13) [2023-02-18 20:24:14,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 195 transitions. [2023-02-18 20:24:14,100 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 195 transitions. Word has length 36 [2023-02-18 20:24:14,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 20:24:14,101 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 195 transitions. [2023-02-18 20:24:14,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 20:24:14,101 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 195 transitions. [2023-02-18 20:24:14,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-18 20:24:14,103 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 20:24:14,104 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 20:24:14,113 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 20:24:14,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-02-18 20:24:14,518 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=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-02-18 20:24:14,519 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-02-18 20:24:14,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 20:24:14,519 INFO L85 PathProgramCache]: Analyzing trace with hash 2012582842, now seen corresponding path program 1 times [2023-02-18 20:24:14,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 20:24:14,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570596964] [2023-02-18 20:24:14,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 20:24:14,520 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 20:24:14,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 20:24:14,521 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 20:24:14,523 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 20:24:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 20:24:14,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 75 conjunts are in the unsatisfiable core [2023-02-18 20:24:14,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 20:24:14,877 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 6 treesize of output 5 [2023-02-18 20:24:14,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-18 20:24:14,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-18 20:24:14,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:24:14,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 20:24:14,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:24:14,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-18 20:24:14,917 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:24:14,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-18 20:24:14,935 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 16 treesize of output 18 [2023-02-18 20:24:14,940 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 16 treesize of output 18 [2023-02-18 20:24:14,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-02-18 20:24:14,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-02-18 20:24:15,356 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2023-02-18 20:24:15,363 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:24:15,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 199 [2023-02-18 20:24:15,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 92 treesize of output 62 [2023-02-18 20:24:15,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 20:24:15,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 127 [2023-02-18 20:24:15,387 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 20:24:15,544 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:24:15,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 69 treesize of output 230 [2023-02-18 20:24:15,775 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:24:15,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 658 treesize of output 502 [2023-02-18 20:24:15,785 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 20:24:15,787 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 20:24:15,787 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 20:24:15,791 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 20:24:15,792 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 20:24:15,793 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 20:24:15,797 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 20:24:15,798 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 20:24:15,798 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 20:24:15,799 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 20:24:15,800 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 20:24:15,801 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 20:24:20,687 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 20:24:20,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 98 select indices, 98 select index equivalence classes, 0 disjoint index pairs (out of 4753 index pairs), introduced 99 new quantified variables, introduced 4753 case distinctions, treesize of input 11857 treesize of output 48240