./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 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/uthash-2.0.2/uthash_JEN_test2-1.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 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 08:49:52,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 08:49:52,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 08:49:52,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 08:49:52,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 08:49:52,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 08:49:52,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 08:49:52,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 08:49:52,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 08:49:52,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 08:49:52,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 08:49:52,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 08:49:52,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 08:49:52,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 08:49:52,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 08:49:52,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 08:49:52,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 08:49:52,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 08:49:52,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 08:49:52,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 08:49:53,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 08:49:53,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 08:49:53,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 08:49:53,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 08:49:53,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 08:49:53,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 08:49:53,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 08:49:53,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 08:49:53,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 08:49:53,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 08:49:53,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 08:49:53,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 08:49:53,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 08:49:53,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 08:49:53,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 08:49:53,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 08:49:53,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 08:49:53,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 08:49:53,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 08:49:53,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 08:49:53,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 08:49:53,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-16 08:49:53,072 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 08:49:53,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 08:49:53,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 08:49:53,073 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 08:49:53,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 08:49:53,074 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 08:49:53,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 08:49:53,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 08:49:53,074 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 08:49:53,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 08:49:53,075 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 08:49:53,075 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 08:49:53,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 08:49:53,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 08:49:53,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 08:49:53,076 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 08:49:53,076 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 08:49:53,076 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 08:49:53,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 08:49:53,077 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 08:49:53,087 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 08:49:53,087 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 08:49:53,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 08:49:53,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 08:49:53,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 08:49:53,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 08:49:53,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 08:49:53,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 08:49:53,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 08:49:53,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 08:49:53,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 08:49:53,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 [2021-12-16 08:49:53,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 08:49:53,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 08:49:53,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 08:49:53,444 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 08:49:53,445 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 08:49:53,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2021-12-16 08:49:53,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e88b11477/c348aed632ac495480b0c5056b33fd63/FLAG027c91b56 [2021-12-16 08:49:53,988 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 08:49:53,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2021-12-16 08:49:54,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e88b11477/c348aed632ac495480b0c5056b33fd63/FLAG027c91b56 [2021-12-16 08:49:54,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e88b11477/c348aed632ac495480b0c5056b33fd63 [2021-12-16 08:49:54,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 08:49:54,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 08:49:54,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 08:49:54,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 08:49:54,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 08:49:54,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:49:54" (1/1) ... [2021-12-16 08:49:54,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f1fd83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:49:54, skipping insertion in model container [2021-12-16 08:49:54,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:49:54" (1/1) ... [2021-12-16 08:49:54,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 08:49:54,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 08:49:54,339 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2021-12-16 08:49:54,430 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2021-12-16 08:49:54,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:49:54,440 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-16 08:49:54,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7434d363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:49:54, skipping insertion in model container [2021-12-16 08:49:54,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 08:49:54,443 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-16 08:49:54,444 INFO L158 Benchmark]: Toolchain (without parser) took 417.21ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 51.6MB in the beginning and 73.0MB in the end (delta: -21.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-16 08:49:54,445 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 86.0MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 08:49:54,447 INFO L158 Benchmark]: CACSL2BoogieTranslator took 414.59ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 51.5MB in the beginning and 73.5MB in the end (delta: -22.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-16 08:49:54,448 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 86.0MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 414.59ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 51.5MB in the beginning and 73.5MB in the end (delta: -22.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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/uthash-2.0.2/uthash_JEN_test2-1.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 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 08:49:55,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 08:49:56,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 08:49:56,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 08:49:56,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 08:49:56,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 08:49:56,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 08:49:56,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 08:49:56,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 08:49:56,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 08:49:56,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 08:49:56,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 08:49:56,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 08:49:56,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 08:49:56,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 08:49:56,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 08:49:56,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 08:49:56,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 08:49:56,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 08:49:56,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 08:49:56,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 08:49:56,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 08:49:56,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 08:49:56,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 08:49:56,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 08:49:56,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 08:49:56,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 08:49:56,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 08:49:56,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 08:49:56,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 08:49:56,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 08:49:56,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 08:49:56,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 08:49:56,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 08:49:56,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 08:49:56,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 08:49:56,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 08:49:56,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 08:49:56,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 08:49:56,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 08:49:56,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 08:49:56,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-16 08:49:56,116 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 08:49:56,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 08:49:56,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 08:49:56,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 08:49:56,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 08:49:56,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 08:49:56,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 08:49:56,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 08:49:56,119 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 08:49:56,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 08:49:56,120 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 08:49:56,120 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 08:49:56,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 08:49:56,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 08:49:56,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 08:49:56,121 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 08:49:56,121 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 08:49:56,121 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 08:49:56,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 08:49:56,121 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 08:49:56,122 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 08:49:56,122 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 08:49:56,122 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 08:49:56,122 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 08:49:56,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 08:49:56,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 08:49:56,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 08:49:56,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 08:49:56,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 08:49:56,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 08:49:56,123 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 08:49:56,123 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 08:49:56,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 08:49:56,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 08:49:56,124 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 [2021-12-16 08:49:56,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 08:49:56,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 08:49:56,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 08:49:56,424 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 08:49:56,425 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 08:49:56,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2021-12-16 08:49:56,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e186ec36d/e6505b51772f4412b514fe9bfd6b4f86/FLAG0ec4c7d1f [2021-12-16 08:49:57,005 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 08:49:57,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2021-12-16 08:49:57,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e186ec36d/e6505b51772f4412b514fe9bfd6b4f86/FLAG0ec4c7d1f [2021-12-16 08:49:57,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e186ec36d/e6505b51772f4412b514fe9bfd6b4f86 [2021-12-16 08:49:57,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 08:49:57,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 08:49:57,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 08:49:57,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 08:49:57,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 08:49:57,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:49:57" (1/1) ... [2021-12-16 08:49:57,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd0183e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:49:57, skipping insertion in model container [2021-12-16 08:49:57,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:49:57" (1/1) ... [2021-12-16 08:49:57,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 08:49:57,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 08:49:57,825 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2021-12-16 08:49:57,942 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2021-12-16 08:49:57,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:49:57,959 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-16 08:49:57,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 08:49:58,018 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2021-12-16 08:49:58,077 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2021-12-16 08:49:58,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:49:58,087 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 08:49:58,110 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2021-12-16 08:49:58,160 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2021-12-16 08:49:58,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:49:58,194 INFO L208 MainTranslator]: Completed translation [2021-12-16 08:49:58,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:49:58 WrapperNode [2021-12-16 08:49:58,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 08:49:58,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 08:49:58,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 08:49:58,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 08:49:58,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:49:58" (1/1) ... [2021-12-16 08:49:58,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:49:58" (1/1) ... [2021-12-16 08:49:58,263 INFO L137 Inliner]: procedures = 211, calls = 235, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 890 [2021-12-16 08:49:58,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 08:49:58,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 08:49:58,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 08:49:58,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 08:49:58,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:49:58" (1/1) ... [2021-12-16 08:49:58,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:49:58" (1/1) ... [2021-12-16 08:49:58,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:49:58" (1/1) ... [2021-12-16 08:49:58,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:49:58" (1/1) ... [2021-12-16 08:49:58,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:49:58" (1/1) ... [2021-12-16 08:49:58,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:49:58" (1/1) ... [2021-12-16 08:49:58,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:49:58" (1/1) ... [2021-12-16 08:49:58,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 08:49:58,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 08:49:58,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 08:49:58,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 08:49:58,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:49:58" (1/1) ... [2021-12-16 08:49:58,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 08:49:58,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 08:49:58,374 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) [2021-12-16 08:49:58,391 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 [2021-12-16 08:49:58,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-16 08:49:58,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-16 08:49:58,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 08:49:58,402 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 08:49:58,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 08:49:58,403 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-16 08:49:58,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 08:49:58,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 08:49:58,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-16 08:49:58,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 08:49:58,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 08:49:58,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 08:49:58,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 08:49:58,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 08:49:58,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 08:49:58,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 08:49:58,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 08:49:58,553 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 08:49:58,554 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 08:49:58,557 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 08:50:01,351 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 08:50:01,366 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 08:50:01,366 INFO L301 CfgBuilder]: Removed 54 assume(true) statements. [2021-12-16 08:50:01,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:50:01 BoogieIcfgContainer [2021-12-16 08:50:01,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 08:50:01,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 08:50:01,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 08:50:01,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 08:50:01,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 08:49:57" (1/3) ... [2021-12-16 08:50:01,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f869b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:50:01, skipping insertion in model container [2021-12-16 08:50:01,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:49:58" (2/3) ... [2021-12-16 08:50:01,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f869b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:50:01, skipping insertion in model container [2021-12-16 08:50:01,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:50:01" (3/3) ... [2021-12-16 08:50:01,377 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test2-1.i [2021-12-16 08:50:01,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 08:50:01,382 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2021-12-16 08:50:01,421 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 08:50:01,427 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 08:50:01,428 INFO L340 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2021-12-16 08:50:01,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 882 states, 443 states have (on average 2.216704288939052) internal successors, (982), 876 states have internal predecessors, (982), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-16 08:50:01,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-16 08:50:01,459 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:01,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-16 08:50:01,460 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:01,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:01,464 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-12-16 08:50:01,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:01,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62033563] [2021-12-16 08:50:01,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:50:01,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:01,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:01,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:01,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 08:50:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:50:01,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:50:01,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:01,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:50:01,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:01,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:50:01,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:01,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62033563] [2021-12-16 08:50:01,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62033563] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:50:01,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:50:01,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:50:01,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756234503] [2021-12-16 08:50:01,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:50:01,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:50:01,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:01,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:50:01,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:50:01,733 INFO L87 Difference]: Start difference. First operand has 882 states, 443 states have (on average 2.216704288939052) internal successors, (982), 876 states have internal predecessors, (982), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:02,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:02,611 INFO L93 Difference]: Finished difference Result 869 states and 925 transitions. [2021-12-16 08:50:02,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:50:02,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-12-16 08:50:02,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:02,630 INFO L225 Difference]: With dead ends: 869 [2021-12-16 08:50:02,647 INFO L226 Difference]: Without dead ends: 867 [2021-12-16 08:50:02,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:50:02,654 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 804 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:02,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 582 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 08:50:02,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-12-16 08:50:02,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 866. [2021-12-16 08:50:02,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 443 states have (on average 2.0474040632054176) internal successors, (907), 860 states have internal predecessors, (907), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-16 08:50:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 923 transitions. [2021-12-16 08:50:02,746 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 923 transitions. Word has length 3 [2021-12-16 08:50:02,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:02,746 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 923 transitions. [2021-12-16 08:50:02,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:02,746 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 923 transitions. [2021-12-16 08:50:02,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-16 08:50:02,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:02,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-16 08:50:02,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:02,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:02,959 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:02,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:02,959 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-12-16 08:50:02,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:02,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937012843] [2021-12-16 08:50:02,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:50:02,960 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:02,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:02,979 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:02,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-16 08:50:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:50:03,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:50:03,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:03,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:50:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:03,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:50:03,097 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:03,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937012843] [2021-12-16 08:50:03,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937012843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:50:03,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:50:03,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:50:03,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513770563] [2021-12-16 08:50:03,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:50:03,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:50:03,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:03,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:50:03,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:50:03,104 INFO L87 Difference]: Start difference. First operand 866 states and 923 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:04,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:04,556 INFO L93 Difference]: Finished difference Result 1085 states and 1173 transitions. [2021-12-16 08:50:04,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:50:04,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-12-16 08:50:04,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:04,560 INFO L225 Difference]: With dead ends: 1085 [2021-12-16 08:50:04,560 INFO L226 Difference]: Without dead ends: 1085 [2021-12-16 08:50:04,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:50:04,561 INFO L933 BasicCegarLoop]: 828 mSDtfsCounter, 240 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:04,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1312 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 08:50:04,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2021-12-16 08:50:04,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 998. [2021-12-16 08:50:04,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 571 states have (on average 2.0052539404553413) internal successors, (1145), 992 states have internal predecessors, (1145), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 08:50:04,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1171 transitions. [2021-12-16 08:50:04,576 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1171 transitions. Word has length 3 [2021-12-16 08:50:04,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:04,577 INFO L470 AbstractCegarLoop]: Abstraction has 998 states and 1171 transitions. [2021-12-16 08:50:04,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:04,577 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1171 transitions. [2021-12-16 08:50:04,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 08:50:04,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:04,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:04,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:04,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:04,784 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:04,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:04,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2021-12-16 08:50:04,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:04,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85860114] [2021-12-16 08:50:04,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:50:04,788 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:04,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:04,792 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:04,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-16 08:50:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:50:04,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 08:50:04,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:04,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:50:04,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:50:05,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 08:50:05,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-16 08:50:05,014 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 08:50:05,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-16 08:50:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:05,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:50:05,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:05,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85860114] [2021-12-16 08:50:05,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85860114] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:50:05,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:50:05,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:50:05,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261166185] [2021-12-16 08:50:05,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:50:05,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:50:05,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:05,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:50:05,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:50:05,036 INFO L87 Difference]: Start difference. First operand 998 states and 1171 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:06,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:06,486 INFO L93 Difference]: Finished difference Result 988 states and 1160 transitions. [2021-12-16 08:50:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:50:06,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-16 08:50:06,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:06,489 INFO L225 Difference]: With dead ends: 988 [2021-12-16 08:50:06,489 INFO L226 Difference]: Without dead ends: 988 [2021-12-16 08:50:06,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:50:06,490 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 874 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:06,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 347 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 08:50:06,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-12-16 08:50:06,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 855. [2021-12-16 08:50:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 443 states have (on average 2.020316027088036) internal successors, (895), 849 states have internal predecessors, (895), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-16 08:50:06,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 911 transitions. [2021-12-16 08:50:06,504 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 911 transitions. Word has length 7 [2021-12-16 08:50:06,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:06,504 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 911 transitions. [2021-12-16 08:50:06,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:06,505 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 911 transitions. [2021-12-16 08:50:06,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 08:50:06,505 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:06,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:06,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:06,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:06,713 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:06,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:06,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-12-16 08:50:06,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:06,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299772907] [2021-12-16 08:50:06,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:50:06,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:06,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:06,715 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:06,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-16 08:50:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:50:06,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:50:06,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:06,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:50:06,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:06,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:50:06,823 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:06,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299772907] [2021-12-16 08:50:06,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299772907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:50:06,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:50:06,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:50:06,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973392871] [2021-12-16 08:50:06,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:50:06,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:50:06,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:06,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:50:06,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:50:06,825 INFO L87 Difference]: Start difference. First operand 855 states and 911 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:07,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:07,785 INFO L93 Difference]: Finished difference Result 1031 states and 1118 transitions. [2021-12-16 08:50:07,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:50:07,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-16 08:50:07,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:07,789 INFO L225 Difference]: With dead ends: 1031 [2021-12-16 08:50:07,790 INFO L226 Difference]: Without dead ends: 1031 [2021-12-16 08:50:07,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:50:07,790 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 814 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:07,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 871 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 08:50:07,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2021-12-16 08:50:07,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 808. [2021-12-16 08:50:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 443 states have (on average 1.9142212189616252) internal successors, (848), 802 states have internal predecessors, (848), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-16 08:50:07,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 864 transitions. [2021-12-16 08:50:07,805 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 864 transitions. Word has length 8 [2021-12-16 08:50:07,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:07,805 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 864 transitions. [2021-12-16 08:50:07,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:07,805 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 864 transitions. [2021-12-16 08:50:07,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 08:50:07,806 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:07,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:07,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:08,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:08,013 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:08,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:08,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-12-16 08:50:08,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:08,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125514809] [2021-12-16 08:50:08,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:50:08,014 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:08,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:08,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:08,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-16 08:50:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:50:08,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:50:08,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:08,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:50:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:08,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:50:08,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:08,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125514809] [2021-12-16 08:50:08,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125514809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:50:08,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:50:08,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:50:08,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543524452] [2021-12-16 08:50:08,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:50:08,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:50:08,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:08,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:50:08,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:50:08,137 INFO L87 Difference]: Start difference. First operand 808 states and 864 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:09,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:09,394 INFO L93 Difference]: Finished difference Result 1098 states and 1187 transitions. [2021-12-16 08:50:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:50:09,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-16 08:50:09,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:09,399 INFO L225 Difference]: With dead ends: 1098 [2021-12-16 08:50:09,399 INFO L226 Difference]: Without dead ends: 1098 [2021-12-16 08:50:09,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:50:09,401 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 501 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:09,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 1229 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 08:50:09,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2021-12-16 08:50:09,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 830. [2021-12-16 08:50:09,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 475 states have (on average 1.9031578947368422) internal successors, (904), 824 states have internal predecessors, (904), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-16 08:50:09,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 920 transitions. [2021-12-16 08:50:09,417 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 920 transitions. Word has length 8 [2021-12-16 08:50:09,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:09,418 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 920 transitions. [2021-12-16 08:50:09,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:09,418 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 920 transitions. [2021-12-16 08:50:09,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-16 08:50:09,419 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:09,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:09,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:09,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:09,626 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr429ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:09,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:09,627 INFO L85 PathProgramCache]: Analyzing trace with hash 2106311903, now seen corresponding path program 1 times [2021-12-16 08:50:09,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:09,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943877768] [2021-12-16 08:50:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:50:09,627 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:09,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:09,628 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:09,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-16 08:50:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:50:09,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 08:50:09,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:09,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 08:50:09,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 08:50:09,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 08:50:09,862 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-12-16 08:50:09,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-12-16 08:50:09,921 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-12-16 08:50:09,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 67 treesize of output 23 [2021-12-16 08:50:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:09,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:50:09,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:09,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943877768] [2021-12-16 08:50:09,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943877768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:50:09,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:50:09,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:50:09,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399584164] [2021-12-16 08:50:09,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:50:09,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:50:09,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:09,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:50:09,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:50:09,939 INFO L87 Difference]: Start difference. First operand 830 states and 920 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:10,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:10,720 INFO L93 Difference]: Finished difference Result 1051 states and 1171 transitions. [2021-12-16 08:50:10,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:50:10,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-16 08:50:10,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:10,724 INFO L225 Difference]: With dead ends: 1051 [2021-12-16 08:50:10,724 INFO L226 Difference]: Without dead ends: 1051 [2021-12-16 08:50:10,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:50:10,724 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 237 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:10,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 2333 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 08:50:10,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-12-16 08:50:10,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 832. [2021-12-16 08:50:10,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 477 states have (on average 1.89937106918239) internal successors, (906), 826 states have internal predecessors, (906), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-16 08:50:10,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 922 transitions. [2021-12-16 08:50:10,736 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 922 transitions. Word has length 10 [2021-12-16 08:50:10,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:10,736 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 922 transitions. [2021-12-16 08:50:10,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:10,736 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 922 transitions. [2021-12-16 08:50:10,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-16 08:50:10,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:10,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:10,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:10,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:10,937 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:10,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-12-16 08:50:10,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:10,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768230833] [2021-12-16 08:50:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:50:10,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:10,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:10,939 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:10,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-16 08:50:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:50:11,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 08:50:11,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:11,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:50:11,084 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:11,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768230833] [2021-12-16 08:50:11,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768230833] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:50:11,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:50:11,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:50:11,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486310941] [2021-12-16 08:50:11,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:50:11,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:50:11,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:11,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:50:11,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:50:11,085 INFO L87 Difference]: Start difference. First operand 832 states and 922 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:11,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:11,104 INFO L93 Difference]: Finished difference Result 801 states and 890 transitions. [2021-12-16 08:50:11,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:50:11,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-16 08:50:11,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:11,107 INFO L225 Difference]: With dead ends: 801 [2021-12-16 08:50:11,108 INFO L226 Difference]: Without dead ends: 801 [2021-12-16 08:50:11,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:50:11,109 INFO L933 BasicCegarLoop]: 807 mSDtfsCounter, 776 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:11,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [784 Valid, 839 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:50:11,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-12-16 08:50:11,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 790. [2021-12-16 08:50:11,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 459 states have (on average 1.8801742919389979) internal successors, (863), 784 states have internal predecessors, (863), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-16 08:50:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 879 transitions. [2021-12-16 08:50:11,123 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 879 transitions. Word has length 18 [2021-12-16 08:50:11,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:11,123 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 879 transitions. [2021-12-16 08:50:11,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:11,124 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 879 transitions. [2021-12-16 08:50:11,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-16 08:50:11,124 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:11,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:11,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:11,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:11,342 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:11,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:11,343 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-12-16 08:50:11,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:11,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358207506] [2021-12-16 08:50:11,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:50:11,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:11,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:11,345 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:11,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-16 08:50:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:50:11,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:50:11,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:11,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:11,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:50:11,509 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:11,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358207506] [2021-12-16 08:50:11,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358207506] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:50:11,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:50:11,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:50:11,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170852227] [2021-12-16 08:50:11,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:50:11,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:50:11,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:11,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:50:11,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:50:11,511 INFO L87 Difference]: Start difference. First operand 790 states and 879 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:11,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:11,561 INFO L93 Difference]: Finished difference Result 780 states and 862 transitions. [2021-12-16 08:50:11,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:50:11,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-16 08:50:11,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:11,564 INFO L225 Difference]: With dead ends: 780 [2021-12-16 08:50:11,564 INFO L226 Difference]: Without dead ends: 780 [2021-12-16 08:50:11,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:50:11,564 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 747 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:11,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 1549 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:50:11,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-12-16 08:50:11,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 768. [2021-12-16 08:50:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 762 states have internal predecessors, (834), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-16 08:50:11,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 850 transitions. [2021-12-16 08:50:11,573 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 850 transitions. Word has length 20 [2021-12-16 08:50:11,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:11,574 INFO L470 AbstractCegarLoop]: Abstraction has 768 states and 850 transitions. [2021-12-16 08:50:11,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:11,574 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 850 transitions. [2021-12-16 08:50:11,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 08:50:11,575 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:11,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:11,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-16 08:50:11,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:11,783 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:11,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:11,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-12-16 08:50:11,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:11,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119627221] [2021-12-16 08:50:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:50:11,792 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:11,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:11,793 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:11,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-16 08:50:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:50:11,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:50:11,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:11,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:50:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:12,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:50:12,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:12,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119627221] [2021-12-16 08:50:12,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119627221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:50:12,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:50:12,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:50:12,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811016684] [2021-12-16 08:50:12,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:50:12,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:50:12,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:12,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:50:12,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:50:12,048 INFO L87 Difference]: Start difference. First operand 768 states and 850 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:13,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:13,136 INFO L93 Difference]: Finished difference Result 998 states and 1111 transitions. [2021-12-16 08:50:13,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:50:13,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-16 08:50:13,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:13,139 INFO L225 Difference]: With dead ends: 998 [2021-12-16 08:50:13,139 INFO L226 Difference]: Without dead ends: 998 [2021-12-16 08:50:13,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:50:13,140 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 1357 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:13,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1357 Valid, 781 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 08:50:13,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2021-12-16 08:50:13,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 764. [2021-12-16 08:50:13,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 451 states have (on average 1.8403547671840355) internal successors, (830), 758 states have internal predecessors, (830), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-16 08:50:13,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 846 transitions. [2021-12-16 08:50:13,168 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 846 transitions. Word has length 34 [2021-12-16 08:50:13,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:13,168 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 846 transitions. [2021-12-16 08:50:13,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:13,169 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 846 transitions. [2021-12-16 08:50:13,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 08:50:13,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:13,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:13,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:13,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:13,377 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:13,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:13,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-12-16 08:50:13,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:13,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92741524] [2021-12-16 08:50:13,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:50:13,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:13,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:13,379 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:13,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-16 08:50:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:50:13,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 08:50:13,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:13,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:50:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:13,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:50:13,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:13,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92741524] [2021-12-16 08:50:13,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92741524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:50:13,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:50:13,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:50:13,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628343128] [2021-12-16 08:50:13,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:50:13,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:50:13,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:13,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:50:13,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:50:13,716 INFO L87 Difference]: Start difference. First operand 764 states and 846 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:15,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:15,242 INFO L93 Difference]: Finished difference Result 1039 states and 1120 transitions. [2021-12-16 08:50:15,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:50:15,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-16 08:50:15,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:15,245 INFO L225 Difference]: With dead ends: 1039 [2021-12-16 08:50:15,245 INFO L226 Difference]: Without dead ends: 1039 [2021-12-16 08:50:15,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:50:15,246 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 806 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:15,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 1280 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 08:50:15,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2021-12-16 08:50:15,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 760. [2021-12-16 08:50:15,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 451 states have (on average 1.8314855875831486) internal successors, (826), 754 states have internal predecessors, (826), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-16 08:50:15,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 842 transitions. [2021-12-16 08:50:15,254 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 842 transitions. Word has length 34 [2021-12-16 08:50:15,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:15,256 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 842 transitions. [2021-12-16 08:50:15,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:15,256 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 842 transitions. [2021-12-16 08:50:15,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-16 08:50:15,261 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:15,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:15,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:15,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:15,461 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:15,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:15,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1723497600, now seen corresponding path program 1 times [2021-12-16 08:50:15,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:15,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361369819] [2021-12-16 08:50:15,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:50:15,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:15,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:15,465 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:15,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-16 08:50:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:50:15,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:50:15,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:15,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:50:15,698 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:15,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361369819] [2021-12-16 08:50:15,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361369819] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:50:15,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:50:15,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:50:15,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101256279] [2021-12-16 08:50:15,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:50:15,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:50:15,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:15,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:50:15,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:50:15,699 INFO L87 Difference]: Start difference. First operand 760 states and 842 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:15,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:15,732 INFO L93 Difference]: Finished difference Result 765 states and 843 transitions. [2021-12-16 08:50:15,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:50:15,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-12-16 08:50:15,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:15,734 INFO L225 Difference]: With dead ends: 765 [2021-12-16 08:50:15,734 INFO L226 Difference]: Without dead ends: 765 [2021-12-16 08:50:15,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:50:15,735 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 723 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:15,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 1527 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:50:15,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2021-12-16 08:50:15,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 754. [2021-12-16 08:50:15,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 445 states have (on average 1.8337078651685392) internal successors, (816), 748 states have internal predecessors, (816), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-16 08:50:15,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 832 transitions. [2021-12-16 08:50:15,742 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 832 transitions. Word has length 49 [2021-12-16 08:50:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:15,742 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 832 transitions. [2021-12-16 08:50:15,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 832 transitions. [2021-12-16 08:50:15,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-16 08:50:15,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:15,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:15,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:15,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:15,951 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:15,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:15,951 INFO L85 PathProgramCache]: Analyzing trace with hash 2061892788, now seen corresponding path program 1 times [2021-12-16 08:50:15,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:15,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681730642] [2021-12-16 08:50:15,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:50:15,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:15,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:15,964 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:15,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-16 08:50:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:50:16,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:50:16,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:16,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:50:16,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:16,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681730642] [2021-12-16 08:50:16,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681730642] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:50:16,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:50:16,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:50:16,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939773285] [2021-12-16 08:50:16,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:50:16,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:50:16,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:16,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:50:16,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:50:16,418 INFO L87 Difference]: Start difference. First operand 754 states and 832 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:16,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:16,498 INFO L93 Difference]: Finished difference Result 956 states and 1056 transitions. [2021-12-16 08:50:16,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:50:16,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-16 08:50:16,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:16,501 INFO L225 Difference]: With dead ends: 956 [2021-12-16 08:50:16,501 INFO L226 Difference]: Without dead ends: 956 [2021-12-16 08:50:16,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:50:16,501 INFO L933 BasicCegarLoop]: 898 mSDtfsCounter, 229 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:16,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 1543 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 08:50:16,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2021-12-16 08:50:16,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 901. [2021-12-16 08:50:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 587 states have (on average 1.7495741056218057) internal successors, (1027), 895 states have internal predecessors, (1027), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 08:50:16,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1053 transitions. [2021-12-16 08:50:16,514 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1053 transitions. Word has length 57 [2021-12-16 08:50:16,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:16,515 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1053 transitions. [2021-12-16 08:50:16,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:16,515 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1053 transitions. [2021-12-16 08:50:16,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-16 08:50:16,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:16,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:16,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:16,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:16,726 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:16,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:16,726 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-12-16 08:50:16,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:16,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167805437] [2021-12-16 08:50:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:50:16,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:16,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:16,728 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:16,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-16 08:50:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:50:17,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 08:50:17,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:17,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:50:17,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:50:17,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 08:50:17,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-16 08:50:17,422 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 08:50:17,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-16 08:50:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:17,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:50:17,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:17,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167805437] [2021-12-16 08:50:17,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167805437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:50:17,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:50:17,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:50:17,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581920506] [2021-12-16 08:50:17,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:50:17,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:50:17,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:17,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:50:17,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:50:17,433 INFO L87 Difference]: Start difference. First operand 901 states and 1053 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:18,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:18,631 INFO L93 Difference]: Finished difference Result 1182 states and 1439 transitions. [2021-12-16 08:50:18,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:50:18,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-12-16 08:50:18,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:18,634 INFO L225 Difference]: With dead ends: 1182 [2021-12-16 08:50:18,635 INFO L226 Difference]: Without dead ends: 1182 [2021-12-16 08:50:18,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:50:18,635 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 931 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:18,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [944 Valid, 405 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 08:50:18,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2021-12-16 08:50:18,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 831. [2021-12-16 08:50:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 555 states have (on average 1.6630630630630632) internal successors, (923), 825 states have internal predecessors, (923), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 08:50:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 949 transitions. [2021-12-16 08:50:18,645 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 949 transitions. Word has length 60 [2021-12-16 08:50:18,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:18,645 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 949 transitions. [2021-12-16 08:50:18,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:18,646 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 949 transitions. [2021-12-16 08:50:18,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 08:50:18,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:18,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:18,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:18,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:18,856 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:18,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:18,856 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-12-16 08:50:18,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:18,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774241792] [2021-12-16 08:50:18,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:50:18,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:18,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:18,858 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:18,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-16 08:50:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:50:19,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 08:50:19,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:19,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:50:19,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-16 08:50:19,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-12-16 08:50:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:19,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:50:19,220 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:19,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774241792] [2021-12-16 08:50:19,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774241792] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:50:19,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:50:19,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:50:19,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158072788] [2021-12-16 08:50:19,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:50:19,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 08:50:19,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:19,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 08:50:19,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:50:19,221 INFO L87 Difference]: Start difference. First operand 831 states and 949 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:20,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:20,578 INFO L93 Difference]: Finished difference Result 830 states and 948 transitions. [2021-12-16 08:50:20,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 08:50:20,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-16 08:50:20,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:20,581 INFO L225 Difference]: With dead ends: 830 [2021-12-16 08:50:20,581 INFO L226 Difference]: Without dead ends: 830 [2021-12-16 08:50:20,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 08:50:20,582 INFO L933 BasicCegarLoop]: 716 mSDtfsCounter, 4 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:20,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1869 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 08:50:20,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-12-16 08:50:20,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2021-12-16 08:50:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 555 states have (on average 1.6612612612612612) internal successors, (922), 824 states have internal predecessors, (922), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 08:50:20,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 948 transitions. [2021-12-16 08:50:20,593 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 948 transitions. Word has length 65 [2021-12-16 08:50:20,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:20,593 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 948 transitions. [2021-12-16 08:50:20,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:20,594 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 948 transitions. [2021-12-16 08:50:20,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 08:50:20,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:20,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:20,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:20,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:20,804 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:20,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:20,804 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-12-16 08:50:20,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:20,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404455230] [2021-12-16 08:50:20,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:50:20,805 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:20,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:20,807 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:20,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-16 08:50:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:50:21,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 08:50:21,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:21,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:50:21,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-16 08:50:21,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-16 08:50:21,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-16 08:50:21,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-16 08:50:21,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:21,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:50:21,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:21,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404455230] [2021-12-16 08:50:21,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404455230] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:50:21,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:50:21,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:50:21,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101324554] [2021-12-16 08:50:21,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:50:21,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 08:50:21,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:21,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 08:50:21,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:50:21,221 INFO L87 Difference]: Start difference. First operand 830 states and 948 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:22,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:22,879 INFO L93 Difference]: Finished difference Result 829 states and 947 transitions. [2021-12-16 08:50:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 08:50:22,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-16 08:50:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:22,882 INFO L225 Difference]: With dead ends: 829 [2021-12-16 08:50:22,882 INFO L226 Difference]: Without dead ends: 829 [2021-12-16 08:50:22,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 08:50:22,883 INFO L933 BasicCegarLoop]: 716 mSDtfsCounter, 2 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:22,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1889 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-16 08:50:22,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2021-12-16 08:50:22,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 829. [2021-12-16 08:50:22,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 554 states have (on average 1.6624548736462095) internal successors, (921), 823 states have internal predecessors, (921), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 08:50:22,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 947 transitions. [2021-12-16 08:50:22,892 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 947 transitions. Word has length 65 [2021-12-16 08:50:22,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:22,896 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 947 transitions. [2021-12-16 08:50:22,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:50:22,897 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 947 transitions. [2021-12-16 08:50:22,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-16 08:50:22,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:22,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:22,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:23,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:23,107 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:23,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:23,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1478911951, now seen corresponding path program 1 times [2021-12-16 08:50:23,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:23,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585378181] [2021-12-16 08:50:23,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:50:23,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:23,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:23,110 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:23,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-16 08:50:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:50:23,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:50:23,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:23,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:50:23,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:23,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585378181] [2021-12-16 08:50:23,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585378181] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:50:23,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:50:23,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:50:23,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718877998] [2021-12-16 08:50:23,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:50:23,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:50:23,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:23,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:50:23,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:50:23,424 INFO L87 Difference]: Start difference. First operand 829 states and 947 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 08:50:23,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:23,449 INFO L93 Difference]: Finished difference Result 832 states and 951 transitions. [2021-12-16 08:50:23,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:50:23,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-12-16 08:50:23,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:23,455 INFO L225 Difference]: With dead ends: 832 [2021-12-16 08:50:23,455 INFO L226 Difference]: Without dead ends: 832 [2021-12-16 08:50:23,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:50:23,456 INFO L933 BasicCegarLoop]: 716 mSDtfsCounter, 2 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:23,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2143 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:50:23,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-12-16 08:50:23,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2021-12-16 08:50:23,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 556 states have (on average 1.6618705035971224) internal successors, (924), 826 states have internal predecessors, (924), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-12-16 08:50:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 951 transitions. [2021-12-16 08:50:23,470 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 951 transitions. Word has length 73 [2021-12-16 08:50:23,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:23,470 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 951 transitions. [2021-12-16 08:50:23,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 08:50:23,471 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 951 transitions. [2021-12-16 08:50:23,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-16 08:50:23,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:23,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:23,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:23,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:23,681 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:23,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:23,682 INFO L85 PathProgramCache]: Analyzing trace with hash -172740214, now seen corresponding path program 1 times [2021-12-16 08:50:23,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:23,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924013847] [2021-12-16 08:50:23,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:50:23,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:23,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:23,683 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:23,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-16 08:50:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:50:23,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:50:23,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:23,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:23,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:50:24,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:24,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:24,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924013847] [2021-12-16 08:50:24,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924013847] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:50:24,103 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:50:24,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-16 08:50:24,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34209191] [2021-12-16 08:50:24,103 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:50:24,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 08:50:24,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:24,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 08:50:24,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 08:50:24,104 INFO L87 Difference]: Start difference. First operand 832 states and 951 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:50:24,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:24,214 INFO L93 Difference]: Finished difference Result 844 states and 968 transitions. [2021-12-16 08:50:24,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 08:50:24,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2021-12-16 08:50:24,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:24,217 INFO L225 Difference]: With dead ends: 844 [2021-12-16 08:50:24,217 INFO L226 Difference]: Without dead ends: 844 [2021-12-16 08:50:24,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-12-16 08:50:24,218 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 19 mSDsluCounter, 1430 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:24,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 2147 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 08:50:24,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2021-12-16 08:50:24,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 842. [2021-12-16 08:50:24,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 565 states have (on average 1.6619469026548672) internal successors, (939), 835 states have internal predecessors, (939), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-12-16 08:50:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 966 transitions. [2021-12-16 08:50:24,227 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 966 transitions. Word has length 74 [2021-12-16 08:50:24,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:24,227 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 966 transitions. [2021-12-16 08:50:24,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:50:24,227 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 966 transitions. [2021-12-16 08:50:24,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-16 08:50:24,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:24,228 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:24,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:24,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:24,438 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:24,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:24,438 INFO L85 PathProgramCache]: Analyzing trace with hash 841514639, now seen corresponding path program 2 times [2021-12-16 08:50:24,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:24,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54477877] [2021-12-16 08:50:24,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 08:50:24,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:24,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:24,440 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:24,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-16 08:50:24,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 08:50:24,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:50:24,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 08:50:24,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:25,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:50:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:25,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:25,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54477877] [2021-12-16 08:50:25,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54477877] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:50:25,246 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:50:25,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-12-16 08:50:25,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489019305] [2021-12-16 08:50:25,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:50:25,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 08:50:25,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:25,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 08:50:25,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-16 08:50:25,247 INFO L87 Difference]: Start difference. First operand 842 states and 966 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:50:25,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:25,710 INFO L93 Difference]: Finished difference Result 863 states and 994 transitions. [2021-12-16 08:50:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-16 08:50:25,711 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2021-12-16 08:50:25,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:25,714 INFO L225 Difference]: With dead ends: 863 [2021-12-16 08:50:25,714 INFO L226 Difference]: Without dead ends: 859 [2021-12-16 08:50:25,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2021-12-16 08:50:25,714 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 63 mSDsluCounter, 3584 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 4304 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:25,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 4304 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 08:50:25,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-12-16 08:50:25,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 851. [2021-12-16 08:50:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 574 states have (on average 1.656794425087108) internal successors, (951), 844 states have internal predecessors, (951), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-12-16 08:50:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 978 transitions. [2021-12-16 08:50:25,725 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 978 transitions. Word has length 77 [2021-12-16 08:50:25,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:25,725 INFO L470 AbstractCegarLoop]: Abstraction has 851 states and 978 transitions. [2021-12-16 08:50:25,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:50:25,725 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 978 transitions. [2021-12-16 08:50:25,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-16 08:50:25,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:25,726 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:25,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:25,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:25,937 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:25,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:25,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1308816209, now seen corresponding path program 3 times [2021-12-16 08:50:25,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:25,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985204916] [2021-12-16 08:50:25,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 08:50:25,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:25,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:25,940 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:25,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-16 08:50:26,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-16 08:50:26,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:50:26,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-16 08:50:26,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:26,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:50:27,381 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:27,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:27,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985204916] [2021-12-16 08:50:27,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985204916] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:50:27,382 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:50:27,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-12-16 08:50:27,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075150209] [2021-12-16 08:50:27,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:50:27,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-16 08:50:27,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:27,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-16 08:50:27,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-12-16 08:50:27,383 INFO L87 Difference]: Start difference. First operand 851 states and 978 transitions. Second operand has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:50:30,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:30,095 INFO L93 Difference]: Finished difference Result 893 states and 1040 transitions. [2021-12-16 08:50:30,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-16 08:50:30,096 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2021-12-16 08:50:30,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:30,099 INFO L225 Difference]: With dead ends: 893 [2021-12-16 08:50:30,099 INFO L226 Difference]: Without dead ends: 887 [2021-12-16 08:50:30,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2021-12-16 08:50:30,100 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 188 mSDsluCounter, 9350 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 10075 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:30,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 10075 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 08:50:30,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-12-16 08:50:30,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 869. [2021-12-16 08:50:30,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 592 states have (on average 1.6452702702702702) internal successors, (974), 862 states have internal predecessors, (974), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-12-16 08:50:30,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1001 transitions. [2021-12-16 08:50:30,111 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1001 transitions. Word has length 83 [2021-12-16 08:50:30,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:30,111 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1001 transitions. [2021-12-16 08:50:30,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:50:30,112 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1001 transitions. [2021-12-16 08:50:30,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-16 08:50:30,112 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:30,112 INFO L514 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:30,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:30,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:30,325 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:30,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:30,325 INFO L85 PathProgramCache]: Analyzing trace with hash 877060335, now seen corresponding path program 4 times [2021-12-16 08:50:30,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:30,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536488686] [2021-12-16 08:50:30,326 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 08:50:30,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:30,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:30,327 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:30,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-16 08:50:30,637 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 08:50:30,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:50:30,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-16 08:50:30,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:31,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:50:32,293 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:50:32,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:32,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536488686] [2021-12-16 08:50:32,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536488686] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:50:32,294 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:50:32,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2021-12-16 08:50:32,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849542417] [2021-12-16 08:50:32,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:50:32,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-12-16 08:50:32,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:50:32,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-12-16 08:50:32,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2021-12-16 08:50:32,296 INFO L87 Difference]: Start difference. First operand 869 states and 1001 transitions. Second operand has 50 states, 50 states have (on average 2.36) internal successors, (118), 50 states have internal predecessors, (118), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:50:41,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:50:41,936 INFO L93 Difference]: Finished difference Result 949 states and 1113 transitions. [2021-12-16 08:50:41,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-12-16 08:50:41,937 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.36) internal successors, (118), 50 states have internal predecessors, (118), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 95 [2021-12-16 08:50:41,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:50:41,939 INFO L225 Difference]: With dead ends: 949 [2021-12-16 08:50:41,939 INFO L226 Difference]: Without dead ends: 945 [2021-12-16 08:50:41,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2021-12-16 08:50:41,942 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 405 mSDsluCounter, 17575 mSDsCounter, 0 mSdLazyCounter, 2455 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 18312 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 2455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:50:41,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 18312 Invalid, 2848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2455 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-16 08:50:41,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2021-12-16 08:50:41,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 903. [2021-12-16 08:50:41,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 626 states have (on average 1.6293929712460065) internal successors, (1020), 896 states have internal predecessors, (1020), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-12-16 08:50:41,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1047 transitions. [2021-12-16 08:50:41,957 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1047 transitions. Word has length 95 [2021-12-16 08:50:41,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:50:41,957 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 1047 transitions. [2021-12-16 08:50:41,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.36) internal successors, (118), 50 states have internal predecessors, (118), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:50:41,957 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1047 transitions. [2021-12-16 08:50:41,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-16 08:50:41,958 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:50:41,958 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:50:41,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-12-16 08:50:42,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:50:42,170 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-16 08:50:42,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:50:42,170 INFO L85 PathProgramCache]: Analyzing trace with hash -267795953, now seen corresponding path program 5 times [2021-12-16 08:50:42,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:50:42,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115291803] [2021-12-16 08:50:42,171 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 08:50:42,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:50:42,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:50:42,172 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:50:42,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-16 08:50:43,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-12-16 08:50:43,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:50:43,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 109 conjunts are in the unsatisfiable core [2021-12-16 08:50:43,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:50:43,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:50:43,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:50:43,476 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 08:50:43,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-16 08:50:43,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-16 08:50:43,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 08:50:43,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-12-16 08:50:43,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-16 08:50:43,642 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1918 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1918))) (exists ((v_ArrVal_1917 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1917)))) is different from true [2021-12-16 08:50:43,653 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1919 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1919))) (exists ((v_ArrVal_1920 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1920))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32)))) is different from true [2021-12-16 08:50:43,663 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1922 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1922))) (exists ((v_ArrVal_1921 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1921))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32)))) is different from true [2021-12-16 08:50:43,674 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1923 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1923))) (exists ((v_ArrVal_1924 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1924))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32)))) is different from true [2021-12-16 08:50:43,718 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1927 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1927))) (exists ((v_ArrVal_1928 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1928)))) is different from true [2021-12-16 08:50:43,729 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1929 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1929))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1930 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1930)))) is different from true [2021-12-16 08:50:43,808 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1938 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1938))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1937 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1937)))) is different from true [2021-12-16 08:50:43,818 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1939 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1939))) (exists ((v_ArrVal_1940 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1940)))) is different from true [2021-12-16 08:50:43,828 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1942 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1942))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1941 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1941)))) is different from true [2021-12-16 08:50:43,906 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1949 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1949))) (exists ((v_ArrVal_1950 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1950)))) is different from true [2021-12-16 08:50:43,982 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1956 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1956))) (exists ((v_ArrVal_1955 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1955))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32)))) is different from true [2021-12-16 08:50:44,016 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1960 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1960))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1959 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1959)))) is different from true [2021-12-16 08:50:44,026 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1962 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1962))) (exists ((v_ArrVal_1961 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1961)))) is different from true [2021-12-16 08:50:44,058 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1965 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1965))) (exists ((v_ArrVal_1966 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1966)))) is different from true [2021-12-16 08:50:44,112 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1971 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1971))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1972 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1972)))) is different from true [2021-12-16 08:50:44,123 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1974 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1974))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1973 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1973)))) is different from true [2021-12-16 08:50:44,133 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1976 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1976))) (exists ((v_ArrVal_1975 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1975))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32)))) is different from true [2021-12-16 08:50:44,233 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1985 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1985))) (exists ((v_ArrVal_1986 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1986))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32)))) is different from true [2021-12-16 08:50:44,243 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1988 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1988))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1987 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1987)))) is different from true [2021-12-16 08:50:44,296 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1993 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1993))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1994 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1994)))) is different from true [2021-12-16 08:50:44,307 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1996 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1996))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1995 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1995)))) is different from true [2021-12-16 08:50:44,318 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1997 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1997))) (exists ((v_ArrVal_1998 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1998))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32)))) is different from true [2021-12-16 08:50:44,327 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1999 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1999))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_2000 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2000)))) is different from true [2021-12-16 08:50:44,412 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-16 08:50:44,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-12-16 08:50:44,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-16 08:50:44,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-12-16 08:50:44,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 7 [2021-12-16 08:50:44,473 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 210 trivial. 759 not checked. [2021-12-16 08:50:44,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:50:45,150 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2095 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2096 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~user~0#1.offset| (_ bv8 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2095) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2096) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))))) (forall ((v_ArrVal_2095 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2095) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd |c_ULTIMATE.start_main_~user~0#1.offset| (_ bv8 32))))) (bvule (bvadd .cse1 (_ bv16 32)) (bvadd .cse1 (_ bv20 32)))))) is different from false [2021-12-16 08:50:45,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:50:45,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115291803] [2021-12-16 08:50:45,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115291803] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 08:50:45,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [996995221] [2021-12-16 08:50:45,157 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 08:50:45,157 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-16 08:50:45,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-16 08:50:45,159 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-16 08:50:45,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process