./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6c24879c 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_test6-1.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 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 01:29:32,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 01:29:32,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 01:29:32,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 01:29:32,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 01:29:32,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 01:29:32,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 01:29:32,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 01:29:32,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 01:29:32,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 01:29:32,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 01:29:32,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 01:29:32,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 01:29:32,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 01:29:32,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 01:29:32,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 01:29:32,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 01:29:32,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 01:29:32,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 01:29:32,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 01:29:32,382 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 01:29:32,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 01:29:32,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 01:29:32,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 01:29:32,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 01:29:32,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 01:29:32,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 01:29:32,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 01:29:32,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 01:29:32,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 01:29:32,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 01:29:32,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 01:29:32,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 01:29:32,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 01:29:32,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 01:29:32,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 01:29:32,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 01:29:32,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 01:29:32,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 01:29:32,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 01:29:32,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 01:29:32,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 01:29:32,398 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-13 01:29:32,420 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 01:29:32,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 01:29:32,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 01:29:32,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 01:29:32,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 01:29:32,421 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 01:29:32,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 01:29:32,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 01:29:32,422 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 01:29:32,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 01:29:32,423 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 01:29:32,423 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 01:29:32,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 01:29:32,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 01:29:32,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 01:29:32,424 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-13 01:29:32,424 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-13 01:29:32,424 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-13 01:29:32,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 01:29:32,424 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 01:29:32,424 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 01:29:32,425 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 01:29:32,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 01:29:32,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 01:29:32,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 01:29:32,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 01:29:32,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 01:29:32,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 01:29:32,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 01:29:32,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 01:29:32,426 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 [2022-07-13 01:29:32,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 01:29:32,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 01:29:32,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 01:29:32,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 01:29:32,664 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 01:29:32,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2022-07-13 01:29:32,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e15e54934/7e555f9bc0a04e1a855fde6fede8c62c/FLAGf0a2ed56b [2022-07-13 01:29:33,137 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 01:29:33,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2022-07-13 01:29:33,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e15e54934/7e555f9bc0a04e1a855fde6fede8c62c/FLAGf0a2ed56b [2022-07-13 01:29:33,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e15e54934/7e555f9bc0a04e1a855fde6fede8c62c [2022-07-13 01:29:33,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 01:29:33,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 01:29:33,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 01:29:33,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 01:29:33,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 01:29:33,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:29:33" (1/1) ... [2022-07-13 01:29:33,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6044478c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:33, skipping insertion in model container [2022-07-13 01:29:33,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:29:33" (1/1) ... [2022-07-13 01:29:33,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 01:29:33,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 01:29:33,873 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_test6-1.i[44118,44131] [2022-07-13 01:29:33,889 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_test6-1.i[44660,44673] [2022-07-13 01:29:33,967 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_test6-1.i[56247,56260] [2022-07-13 01:29:33,968 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_test6-1.i[56368,56381] [2022-07-13 01:29:33,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 01:29:33,981 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-13 01:29:33,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ef9e99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:33, skipping insertion in model container [2022-07-13 01:29:33,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 01:29:33,982 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-13 01:29:33,984 INFO L158 Benchmark]: Toolchain (without parser) took 515.75ms. Allocated memory is still 100.7MB. Free memory was 66.5MB in the beginning and 64.8MB in the end (delta: 1.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 01:29:33,984 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 100.7MB. Free memory was 55.3MB in the beginning and 55.3MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 01:29:33,985 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.43ms. Allocated memory is still 100.7MB. Free memory was 66.3MB in the beginning and 65.0MB in the end (delta: 1.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 01:29:33,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 100.7MB. Free memory was 55.3MB in the beginning and 55.3MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.43ms. Allocated memory is still 100.7MB. Free memory was 66.3MB in the beginning and 65.0MB in the end (delta: 1.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.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 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 01:29:35,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 01:29:35,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 01:29:35,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 01:29:35,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 01:29:35,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 01:29:35,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 01:29:35,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 01:29:35,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 01:29:35,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 01:29:35,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 01:29:35,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 01:29:35,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 01:29:35,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 01:29:35,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 01:29:35,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 01:29:35,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 01:29:35,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 01:29:35,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 01:29:35,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 01:29:35,529 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 01:29:35,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 01:29:35,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 01:29:35,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 01:29:35,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 01:29:35,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 01:29:35,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 01:29:35,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 01:29:35,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 01:29:35,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 01:29:35,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 01:29:35,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 01:29:35,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 01:29:35,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 01:29:35,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 01:29:35,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 01:29:35,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 01:29:35,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 01:29:35,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 01:29:35,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 01:29:35,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 01:29:35,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 01:29:35,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-13 01:29:35,574 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 01:29:35,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 01:29:35,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 01:29:35,575 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 01:29:35,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 01:29:35,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 01:29:35,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 01:29:35,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 01:29:35,577 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 01:29:35,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 01:29:35,578 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 01:29:35,578 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 01:29:35,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 01:29:35,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 01:29:35,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 01:29:35,579 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-13 01:29:35,579 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-13 01:29:35,579 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-13 01:29:35,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 01:29:35,579 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 01:29:35,579 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 01:29:35,579 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 01:29:35,580 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 01:29:35,580 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 01:29:35,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 01:29:35,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 01:29:35,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 01:29:35,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 01:29:35,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 01:29:35,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 01:29:35,581 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 01:29:35,581 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 01:29:35,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 01:29:35,581 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 [2022-07-13 01:29:35,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 01:29:35,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 01:29:35,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 01:29:35,880 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 01:29:35,880 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 01:29:35,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2022-07-13 01:29:35,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa2f2e86a/c332fce4682041ba98dcbf2403d5eaa5/FLAG758086501 [2022-07-13 01:29:36,484 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 01:29:36,485 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2022-07-13 01:29:36,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa2f2e86a/c332fce4682041ba98dcbf2403d5eaa5/FLAG758086501 [2022-07-13 01:29:36,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa2f2e86a/c332fce4682041ba98dcbf2403d5eaa5 [2022-07-13 01:29:36,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 01:29:36,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 01:29:36,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 01:29:36,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 01:29:36,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 01:29:36,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:29:36" (1/1) ... [2022-07-13 01:29:36,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd089a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:36, skipping insertion in model container [2022-07-13 01:29:36,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:29:36" (1/1) ... [2022-07-13 01:29:36,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 01:29:36,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 01:29:37,429 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_test6-1.i[44118,44131] [2022-07-13 01:29:37,444 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_test6-1.i[44660,44673] [2022-07-13 01:29:37,534 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_test6-1.i[56247,56260] [2022-07-13 01:29:37,535 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_test6-1.i[56368,56381] [2022-07-13 01:29:37,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 01:29:37,559 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-13 01:29:37,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 01:29:37,577 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_test6-1.i[44118,44131] [2022-07-13 01:29:37,579 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_test6-1.i[44660,44673] [2022-07-13 01:29:37,634 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_test6-1.i[56247,56260] [2022-07-13 01:29:37,640 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_test6-1.i[56368,56381] [2022-07-13 01:29:37,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 01:29:37,665 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 01:29:37,695 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_test6-1.i[44118,44131] [2022-07-13 01:29:37,696 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_test6-1.i[44660,44673] [2022-07-13 01:29:37,719 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_test6-1.i[56247,56260] [2022-07-13 01:29:37,720 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_test6-1.i[56368,56381] [2022-07-13 01:29:37,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 01:29:37,764 INFO L208 MainTranslator]: Completed translation [2022-07-13 01:29:37,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:37 WrapperNode [2022-07-13 01:29:37,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 01:29:37,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 01:29:37,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 01:29:37,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 01:29:37,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:37" (1/1) ... [2022-07-13 01:29:37,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:37" (1/1) ... [2022-07-13 01:29:37,856 INFO L137 Inliner]: procedures = 285, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1042 [2022-07-13 01:29:37,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 01:29:37,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 01:29:37,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 01:29:37,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 01:29:37,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:37" (1/1) ... [2022-07-13 01:29:37,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:37" (1/1) ... [2022-07-13 01:29:37,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:37" (1/1) ... [2022-07-13 01:29:37,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:37" (1/1) ... [2022-07-13 01:29:37,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:37" (1/1) ... [2022-07-13 01:29:37,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:37" (1/1) ... [2022-07-13 01:29:37,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:37" (1/1) ... [2022-07-13 01:29:37,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 01:29:37,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 01:29:37,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 01:29:37,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 01:29:37,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:37" (1/1) ... [2022-07-13 01:29:37,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 01:29:37,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 01:29:37,970 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) [2022-07-13 01:29:37,995 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 [2022-07-13 01:29:38,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-13 01:29:38,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-13 01:29:38,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 01:29:38,001 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-13 01:29:38,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 01:29:38,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 01:29:38,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-13 01:29:38,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 01:29:38,001 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-07-13 01:29:38,001 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-07-13 01:29:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 01:29:38,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 01:29:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 01:29:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 01:29:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-07-13 01:29:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-07-13 01:29:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 01:29:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-07-13 01:29:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-07-13 01:29:38,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 01:29:38,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 01:29:38,197 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 01:29:38,198 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 01:29:41,599 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 01:29:41,613 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 01:29:41,614 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2022-07-13 01:29:41,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:29:41 BoogieIcfgContainer [2022-07-13 01:29:41,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 01:29:41,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 01:29:41,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 01:29:41,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 01:29:41,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 01:29:36" (1/3) ... [2022-07-13 01:29:41,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:29:41, skipping insertion in model container [2022-07-13 01:29:41,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:37" (2/3) ... [2022-07-13 01:29:41,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:29:41, skipping insertion in model container [2022-07-13 01:29:41,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:29:41" (3/3) ... [2022-07-13 01:29:41,625 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test6-1.i [2022-07-13 01:29:41,636 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 01:29:41,636 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 531 error locations. [2022-07-13 01:29:41,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 01:29:41,693 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7897b0c8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@763a2a4c [2022-07-13 01:29:41,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 531 error locations. [2022-07-13 01:29:41,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 1083 states, 534 states have (on average 2.2284644194756553) internal successors, (1190), 1065 states have internal predecessors, (1190), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-13 01:29:41,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-13 01:29:41,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:29:41,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-13 01:29:41,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:29:41,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:29:41,711 INFO L85 PathProgramCache]: Analyzing trace with hash 77521, now seen corresponding path program 1 times [2022-07-13 01:29:41,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:29:41,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136306979] [2022-07-13 01:29:41,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:29:41,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:29:41,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:29:41,723 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) [2022-07-13 01:29:41,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 01:29:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:29:41,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 01:29:41,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:29:41,931 INFO L390 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 [2022-07-13 01:29:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:29:41,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:29:41,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:29:41,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136306979] [2022-07-13 01:29:41,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136306979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:29:41,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:29:41,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 01:29:41,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433753023] [2022-07-13 01:29:41,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:29:41,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 01:29:41,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:29:41,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 01:29:41,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:29:41,965 INFO L87 Difference]: Start difference. First operand has 1083 states, 534 states have (on average 2.2284644194756553) internal successors, (1190), 1065 states have internal predecessors, (1190), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) 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) [2022-07-13 01:29:43,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:29:43,546 INFO L93 Difference]: Finished difference Result 1162 states and 1229 transitions. [2022-07-13 01:29:43,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 01:29:43,548 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 [2022-07-13 01:29:43,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:29:43,561 INFO L225 Difference]: With dead ends: 1162 [2022-07-13 01:29:43,562 INFO L226 Difference]: Without dead ends: 1160 [2022-07-13 01:29:43,563 INFO L412 NwaCegarLoop]: 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 [2022-07-13 01:29:43,565 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 714 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 01:29:43,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1044 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 01:29:43,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-07-13 01:29:43,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1103. [2022-07-13 01:29:43,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 568 states have (on average 2.084507042253521) internal successors, (1184), 1086 states have internal predecessors, (1184), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-13 01:29:43,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1210 transitions. [2022-07-13 01:29:43,624 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1210 transitions. Word has length 3 [2022-07-13 01:29:43,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:29:43,624 INFO L495 AbstractCegarLoop]: Abstraction has 1103 states and 1210 transitions. [2022-07-13 01:29:43,625 INFO L496 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) [2022-07-13 01:29:43,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1210 transitions. [2022-07-13 01:29:43,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-13 01:29:43,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:29:43,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-13 01:29:43,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-13 01:29:43,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:29:43,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:29:43,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:29:43,845 INFO L85 PathProgramCache]: Analyzing trace with hash 77522, now seen corresponding path program 1 times [2022-07-13 01:29:43,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:29:43,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269364812] [2022-07-13 01:29:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:29:43,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:29:43,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:29:43,847 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) [2022-07-13 01:29:43,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 01:29:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:29:43,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 01:29:43,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:29:43,948 INFO L390 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 [2022-07-13 01:29:43,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:29:43,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:29:43,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:29:43,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269364812] [2022-07-13 01:29:43,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269364812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:29:43,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:29:43,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 01:29:43,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443929887] [2022-07-13 01:29:43,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:29:43,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 01:29:43,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:29:43,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 01:29:43,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:29:43,959 INFO L87 Difference]: Start difference. First operand 1103 states and 1210 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) [2022-07-13 01:29:46,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:29:46,176 INFO L93 Difference]: Finished difference Result 1497 states and 1638 transitions. [2022-07-13 01:29:46,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 01:29:46,177 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 [2022-07-13 01:29:46,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:29:46,181 INFO L225 Difference]: With dead ends: 1497 [2022-07-13 01:29:46,181 INFO L226 Difference]: Without dead ends: 1497 [2022-07-13 01:29:46,181 INFO L412 NwaCegarLoop]: 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 [2022-07-13 01:29:46,182 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 418 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 01:29:46,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 1538 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 01:29:46,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2022-07-13 01:29:46,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1307. [2022-07-13 01:29:46,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 771 states have (on average 2.0700389105058368) internal successors, (1596), 1288 states have internal predecessors, (1596), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-13 01:29:46,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1626 transitions. [2022-07-13 01:29:46,204 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1626 transitions. Word has length 3 [2022-07-13 01:29:46,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:29:46,204 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 1626 transitions. [2022-07-13 01:29:46,204 INFO L496 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) [2022-07-13 01:29:46,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1626 transitions. [2022-07-13 01:29:46,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 01:29:46,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:29:46,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:29:46,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-13 01:29:46,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:29:46,412 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:29:46,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:29:46,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1111693489, now seen corresponding path program 1 times [2022-07-13 01:29:46,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:29:46,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581603409] [2022-07-13 01:29:46,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:29:46,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:29:46,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:29:46,415 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) [2022-07-13 01:29:46,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-13 01:29:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:29:46,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 01:29:46,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:29:46,545 INFO L390 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 [2022-07-13 01:29:46,551 INFO L390 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 [2022-07-13 01:29:46,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 01:29:46,600 INFO L390 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 [2022-07-13 01:29:46,609 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 01:29:46,609 INFO L390 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 12 treesize of output 12 [2022-07-13 01:29:46,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:29:46,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:29:46,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:29:46,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581603409] [2022-07-13 01:29:46,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581603409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:29:46,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:29:46,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:29:46,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181976922] [2022-07-13 01:29:46,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:29:46,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:29:46,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:29:46,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:29:46,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:29:46,634 INFO L87 Difference]: Start difference. First operand 1307 states and 1626 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2022-07-13 01:29:50,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:29:50,263 INFO L93 Difference]: Finished difference Result 1997 states and 2371 transitions. [2022-07-13 01:29:50,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:29:50,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2022-07-13 01:29:50,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:29:50,271 INFO L225 Difference]: With dead ends: 1997 [2022-07-13 01:29:50,271 INFO L226 Difference]: Without dead ends: 1997 [2022-07-13 01:29:50,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:29:50,272 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 719 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-13 01:29:50,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1587 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-13 01:29:50,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2022-07-13 01:29:50,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1452. [2022-07-13 01:29:50,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 916 states have (on average 2.0513100436681224) internal successors, (1879), 1433 states have internal predecessors, (1879), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-13 01:29:50,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1909 transitions. [2022-07-13 01:29:50,296 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1909 transitions. Word has length 8 [2022-07-13 01:29:50,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:29:50,297 INFO L495 AbstractCegarLoop]: Abstraction has 1452 states and 1909 transitions. [2022-07-13 01:29:50,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2022-07-13 01:29:50,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1909 transitions. [2022-07-13 01:29:50,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 01:29:50,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:29:50,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:29:50,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-13 01:29:50,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:29:50,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:29:50,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:29:50,506 INFO L85 PathProgramCache]: Analyzing trace with hash -102759776, now seen corresponding path program 1 times [2022-07-13 01:29:50,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:29:50,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010913717] [2022-07-13 01:29:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:29:50,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:29:50,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:29:50,510 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) [2022-07-13 01:29:50,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-13 01:29:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:29:50,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 01:29:50,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:29:50,623 INFO L390 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 [2022-07-13 01:29:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:29:50,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:29:50,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:29:50,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010913717] [2022-07-13 01:29:50,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010913717] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:29:50,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:29:50,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:29:50,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873614055] [2022-07-13 01:29:50,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:29:50,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:29:50,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:29:50,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:29:50,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:29:50,646 INFO L87 Difference]: Start difference. First operand 1452 states and 1909 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:29:53,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:29:53,041 INFO L93 Difference]: Finished difference Result 2430 states and 3107 transitions. [2022-07-13 01:29:53,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 01:29:53,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-07-13 01:29:53,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:29:53,049 INFO L225 Difference]: With dead ends: 2430 [2022-07-13 01:29:53,049 INFO L226 Difference]: Without dead ends: 2430 [2022-07-13 01:29:53,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:29:53,050 INFO L413 NwaCegarLoop]: 1014 mSDtfsCounter, 2141 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2147 SdHoareTripleChecker+Valid, 1973 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 01:29:53,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2147 Valid, 1973 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 01:29:53,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2022-07-13 01:29:53,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 1407. [2022-07-13 01:29:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 916 states have (on average 1.9868995633187774) internal successors, (1820), 1388 states have internal predecessors, (1820), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-13 01:29:53,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1850 transitions. [2022-07-13 01:29:53,075 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1850 transitions. Word has length 9 [2022-07-13 01:29:53,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:29:53,075 INFO L495 AbstractCegarLoop]: Abstraction has 1407 states and 1850 transitions. [2022-07-13 01:29:53,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:29:53,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1850 transitions. [2022-07-13 01:29:53,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 01:29:53,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:29:53,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:29:53,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-13 01:29:53,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:29:53,283 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:29:53,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:29:53,283 INFO L85 PathProgramCache]: Analyzing trace with hash -102759775, now seen corresponding path program 1 times [2022-07-13 01:29:53,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:29:53,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806793351] [2022-07-13 01:29:53,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:29:53,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:29:53,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:29:53,285 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) [2022-07-13 01:29:53,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-13 01:29:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:29:53,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 01:29:53,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:29:53,400 INFO L390 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 [2022-07-13 01:29:53,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:29:53,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:29:53,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:29:53,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806793351] [2022-07-13 01:29:53,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806793351] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:29:53,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:29:53,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:29:53,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90612407] [2022-07-13 01:29:53,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:29:53,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:29:53,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:29:53,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:29:53,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:29:53,438 INFO L87 Difference]: Start difference. First operand 1407 states and 1850 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:29:56,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:29:56,011 INFO L93 Difference]: Finished difference Result 2046 states and 2685 transitions. [2022-07-13 01:29:56,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:29:56,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-07-13 01:29:56,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:29:56,017 INFO L225 Difference]: With dead ends: 2046 [2022-07-13 01:29:56,018 INFO L226 Difference]: Without dead ends: 2046 [2022-07-13 01:29:56,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:29:56,023 INFO L413 NwaCegarLoop]: 1193 mSDtfsCounter, 1375 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 01:29:56,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 2096 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 01:29:56,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2022-07-13 01:29:56,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1397. [2022-07-13 01:29:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 916 states have (on average 1.960698689956332) internal successors, (1796), 1378 states have internal predecessors, (1796), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-13 01:29:56,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1826 transitions. [2022-07-13 01:29:56,052 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1826 transitions. Word has length 9 [2022-07-13 01:29:56,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:29:56,053 INFO L495 AbstractCegarLoop]: Abstraction has 1397 states and 1826 transitions. [2022-07-13 01:29:56,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:29:56,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1826 transitions. [2022-07-13 01:29:56,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 01:29:56,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:29:56,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:29:56,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-13 01:29:56,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:29:56,261 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr516ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:29:56,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:29:56,261 INFO L85 PathProgramCache]: Analyzing trace with hash -856298529, now seen corresponding path program 1 times [2022-07-13 01:29:56,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:29:56,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022273086] [2022-07-13 01:29:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:29:56,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:29:56,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:29:56,263 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) [2022-07-13 01:29:56,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-13 01:29:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:29:56,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 01:29:56,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:29:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:29:56,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:29:56,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:29:56,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022273086] [2022-07-13 01:29:56,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022273086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:29:56,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:29:56,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:29:56,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841300081] [2022-07-13 01:29:56,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:29:56,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:29:56,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:29:56,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:29:56,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:29:56,426 INFO L87 Difference]: Start difference. First operand 1397 states and 1826 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:29:56,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:29:56,966 INFO L93 Difference]: Finished difference Result 1873 states and 2393 transitions. [2022-07-13 01:29:56,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 01:29:56,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-13 01:29:56,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:29:56,971 INFO L225 Difference]: With dead ends: 1873 [2022-07-13 01:29:56,972 INFO L226 Difference]: Without dead ends: 1873 [2022-07-13 01:29:56,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:29:56,972 INFO L413 NwaCegarLoop]: 1156 mSDtfsCounter, 546 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 01:29:56,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 3122 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 01:29:56,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2022-07-13 01:29:56,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1648. [2022-07-13 01:29:56,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1167 states have (on average 1.974293059125964) internal successors, (2304), 1629 states have internal predecessors, (2304), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-13 01:29:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2334 transitions. [2022-07-13 01:29:57,000 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2334 transitions. Word has length 11 [2022-07-13 01:29:57,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:29:57,000 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2334 transitions. [2022-07-13 01:29:57,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:29:57,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2334 transitions. [2022-07-13 01:29:57,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-13 01:29:57,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:29:57,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:29:57,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-13 01:29:57,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:29:57,208 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:29:57,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:29:57,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2117571646, now seen corresponding path program 1 times [2022-07-13 01:29:57,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:29:57,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798327137] [2022-07-13 01:29:57,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:29:57,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:29:57,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:29:57,212 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) [2022-07-13 01:29:57,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-13 01:29:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:29:57,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 01:29:57,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:29:57,365 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 01:29:57,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 01:29:57,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 01:29:57,403 INFO L356 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2022-07-13 01:29:57,404 INFO L390 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 [2022-07-13 01:29:57,435 INFO L356 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-07-13 01:29:57,435 INFO L390 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 [2022-07-13 01:29:57,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:29:57,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:29:57,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:29:57,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798327137] [2022-07-13 01:29:57,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798327137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:29:57,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:29:57,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:29:57,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32082677] [2022-07-13 01:29:57,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:29:57,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:29:57,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:29:57,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:29:57,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:29:57,448 INFO L87 Difference]: Start difference. First operand 1648 states and 2334 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:29:58,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:29:58,571 INFO L93 Difference]: Finished difference Result 1654 states and 2037 transitions. [2022-07-13 01:29:58,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:29:58,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-13 01:29:58,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:29:58,577 INFO L225 Difference]: With dead ends: 1654 [2022-07-13 01:29:58,578 INFO L226 Difference]: Without dead ends: 1654 [2022-07-13 01:29:58,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:29:58,578 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 357 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 01:29:58,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 2977 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 01:29:58,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2022-07-13 01:29:58,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1290. [2022-07-13 01:29:58,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 811 states have (on average 1.9506781750924784) internal successors, (1582), 1273 states have internal predecessors, (1582), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-13 01:29:58,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1608 transitions. [2022-07-13 01:29:58,597 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1608 transitions. Word has length 14 [2022-07-13 01:29:58,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:29:58,597 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 1608 transitions. [2022-07-13 01:29:58,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:29:58,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1608 transitions. [2022-07-13 01:29:58,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 01:29:58,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:29:58,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:29:58,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-13 01:29:58,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:29:58,807 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:29:58,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:29:58,807 INFO L85 PathProgramCache]: Analyzing trace with hash 769788685, now seen corresponding path program 1 times [2022-07-13 01:29:58,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:29:58,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802011774] [2022-07-13 01:29:58,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:29:58,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:29:58,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:29:58,809 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) [2022-07-13 01:29:58,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-13 01:29:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:29:58,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 01:29:58,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:29:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:29:58,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:29:58,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:29:58,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802011774] [2022-07-13 01:29:58,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802011774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:29:58,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:29:58,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:29:58,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204497041] [2022-07-13 01:29:58,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:29:58,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 01:29:58,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:29:58,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 01:29:58,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:29:58,954 INFO L87 Difference]: Start difference. First operand 1290 states and 1608 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:29:58,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:29:58,972 INFO L93 Difference]: Finished difference Result 1230 states and 1522 transitions. [2022-07-13 01:29:58,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 01:29:58,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-13 01:29:58,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:29:58,976 INFO L225 Difference]: With dead ends: 1230 [2022-07-13 01:29:58,976 INFO L226 Difference]: Without dead ends: 1230 [2022-07-13 01:29:58,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 01:29:58,977 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 959 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1096 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 [2022-07-13 01:29:58,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 1096 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:29:58,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2022-07-13 01:29:58,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1230. [2022-07-13 01:29:58,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 775 states have (on average 1.9303225806451614) internal successors, (1496), 1213 states have internal predecessors, (1496), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-13 01:29:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1522 transitions. [2022-07-13 01:29:59,001 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1522 transitions. Word has length 19 [2022-07-13 01:29:59,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:29:59,001 INFO L495 AbstractCegarLoop]: Abstraction has 1230 states and 1522 transitions. [2022-07-13 01:29:59,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:29:59,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1522 transitions. [2022-07-13 01:29:59,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-13 01:29:59,002 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:29:59,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:29:59,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-13 01:29:59,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:29:59,209 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:29:59,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:29:59,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1032548102, now seen corresponding path program 1 times [2022-07-13 01:29:59,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:29:59,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791567740] [2022-07-13 01:29:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:29:59,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:29:59,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:29:59,211 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) [2022-07-13 01:29:59,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-13 01:29:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:29:59,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 01:29:59,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:29:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:29:59,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:29:59,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:29:59,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791567740] [2022-07-13 01:29:59,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791567740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:29:59,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:29:59,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:29:59,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572797372] [2022-07-13 01:29:59,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:29:59,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:29:59,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:29:59,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:29:59,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:29:59,357 INFO L87 Difference]: Start difference. First operand 1230 states and 1522 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:29:59,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:29:59,414 INFO L93 Difference]: Finished difference Result 1202 states and 1466 transitions. [2022-07-13 01:29:59,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:29:59,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-13 01:29:59,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:29:59,418 INFO L225 Difference]: With dead ends: 1202 [2022-07-13 01:29:59,418 INFO L226 Difference]: Without dead ends: 1202 [2022-07-13 01:29:59,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:29:59,419 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 930 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 2028 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 [2022-07-13 01:29:59,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 2028 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:29:59,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-07-13 01:29:59,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1200. [2022-07-13 01:29:59,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 759 states have (on average 1.8945981554677207) internal successors, (1438), 1183 states have internal predecessors, (1438), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-13 01:29:59,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1464 transitions. [2022-07-13 01:29:59,434 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1464 transitions. Word has length 21 [2022-07-13 01:29:59,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:29:59,434 INFO L495 AbstractCegarLoop]: Abstraction has 1200 states and 1464 transitions. [2022-07-13 01:29:59,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:29:59,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1464 transitions. [2022-07-13 01:29:59,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 01:29:59,435 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:29:59,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:29:59,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-13 01:29:59,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:29:59,643 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:29:59,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:29:59,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308372, now seen corresponding path program 1 times [2022-07-13 01:29:59,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:29:59,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126461874] [2022-07-13 01:29:59,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:29:59,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:29:59,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:29:59,645 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) [2022-07-13 01:29:59,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-13 01:29:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:29:59,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 01:29:59,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:29:59,790 INFO L390 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 [2022-07-13 01:29:59,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:29:59,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:29:59,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:29:59,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126461874] [2022-07-13 01:29:59,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126461874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:29:59,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:29:59,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:29:59,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740103993] [2022-07-13 01:29:59,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:29:59,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 01:29:59,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:29:59,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 01:29:59,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:29:59,841 INFO L87 Difference]: Start difference. First operand 1200 states and 1464 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:30:02,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:30:02,383 INFO L93 Difference]: Finished difference Result 2184 states and 2665 transitions. [2022-07-13 01:30:02,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 01:30:02,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-07-13 01:30:02,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:30:02,389 INFO L225 Difference]: With dead ends: 2184 [2022-07-13 01:30:02,390 INFO L226 Difference]: Without dead ends: 2184 [2022-07-13 01:30:02,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 01:30:02,390 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 2037 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 01:30:02,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2040 Valid, 2019 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 01:30:02,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2022-07-13 01:30:02,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 1196. [2022-07-13 01:30:02,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 759 states have (on average 1.8840579710144927) internal successors, (1430), 1179 states have internal predecessors, (1430), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-13 01:30:02,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1456 transitions. [2022-07-13 01:30:02,407 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1456 transitions. Word has length 35 [2022-07-13 01:30:02,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:30:02,407 INFO L495 AbstractCegarLoop]: Abstraction has 1196 states and 1456 transitions. [2022-07-13 01:30:02,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:30:02,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1456 transitions. [2022-07-13 01:30:02,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 01:30:02,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:30:02,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:30:02,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-13 01:30:02,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:30:02,632 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:30:02,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:30:02,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308373, now seen corresponding path program 1 times [2022-07-13 01:30:02,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:30:02,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970092600] [2022-07-13 01:30:02,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:30:02,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:30:02,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:30:02,635 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) [2022-07-13 01:30:02,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-13 01:30:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:30:02,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 01:30:02,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:30:02,798 INFO L390 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 [2022-07-13 01:30:02,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:02,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:30:02,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:30:02,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970092600] [2022-07-13 01:30:02,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970092600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:30:02,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:30:02,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:30:02,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529264726] [2022-07-13 01:30:02,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:30:02,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 01:30:02,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:30:02,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 01:30:02,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:30:02,938 INFO L87 Difference]: Start difference. First operand 1196 states and 1456 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:30:05,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:30:05,838 INFO L93 Difference]: Finished difference Result 1806 states and 2219 transitions. [2022-07-13 01:30:05,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 01:30:05,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-07-13 01:30:05,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:30:05,844 INFO L225 Difference]: With dead ends: 1806 [2022-07-13 01:30:05,844 INFO L226 Difference]: Without dead ends: 1806 [2022-07-13 01:30:05,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 01:30:05,845 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 1782 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1782 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 01:30:05,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1782 Valid, 2595 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 01:30:05,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2022-07-13 01:30:05,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1192. [2022-07-13 01:30:05,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 759 states have (on average 1.8735177865612649) internal successors, (1422), 1175 states have internal predecessors, (1422), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-13 01:30:05,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1448 transitions. [2022-07-13 01:30:05,859 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1448 transitions. Word has length 35 [2022-07-13 01:30:05,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:30:05,859 INFO L495 AbstractCegarLoop]: Abstraction has 1192 states and 1448 transitions. [2022-07-13 01:30:05,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:30:05,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1448 transitions. [2022-07-13 01:30:05,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-13 01:30:05,860 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:30:05,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:30:05,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-07-13 01:30:06,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:30:06,069 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:30:06,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:30:06,070 INFO L85 PathProgramCache]: Analyzing trace with hash -2063927218, now seen corresponding path program 1 times [2022-07-13 01:30:06,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:30:06,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141232764] [2022-07-13 01:30:06,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:30:06,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:30:06,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:30:06,072 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) [2022-07-13 01:30:06,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-13 01:30:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:30:06,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 01:30:06,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:30:06,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:06,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:30:06,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:30:06,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141232764] [2022-07-13 01:30:06,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141232764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:30:06,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:30:06,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:30:06,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817390298] [2022-07-13 01:30:06,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:30:06,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:30:06,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:30:06,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:30:06,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:30:06,315 INFO L87 Difference]: Start difference. First operand 1192 states and 1448 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:30:06,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:30:06,352 INFO L93 Difference]: Finished difference Result 1180 states and 1428 transitions. [2022-07-13 01:30:06,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:30:06,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-07-13 01:30:06,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:30:06,360 INFO L225 Difference]: With dead ends: 1180 [2022-07-13 01:30:06,360 INFO L226 Difference]: Without dead ends: 1180 [2022-07-13 01:30:06,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:30:06,361 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 906 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 2006 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 [2022-07-13 01:30:06,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 2006 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:30:06,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-07-13 01:30:06,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1180. [2022-07-13 01:30:06,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 747 states have (on average 1.8768406961178046) internal successors, (1402), 1163 states have internal predecessors, (1402), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-13 01:30:06,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1428 transitions. [2022-07-13 01:30:06,376 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1428 transitions. Word has length 54 [2022-07-13 01:30:06,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:30:06,377 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1428 transitions. [2022-07-13 01:30:06,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:30:06,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1428 transitions. [2022-07-13 01:30:06,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 01:30:06,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:30:06,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:30:06,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-13 01:30:06,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:30:06,588 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:30:06,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:30:06,588 INFO L85 PathProgramCache]: Analyzing trace with hash -203140862, now seen corresponding path program 1 times [2022-07-13 01:30:06,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:30:06,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347495603] [2022-07-13 01:30:06,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:30:06,589 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:30:06,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:30:06,591 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) [2022-07-13 01:30:06,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-13 01:30:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:30:06,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 01:30:06,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:30:06,960 INFO L356 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-07-13 01:30:06,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 21 [2022-07-13 01:30:07,013 INFO L356 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-07-13 01:30:07,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 27 [2022-07-13 01:30:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:07,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:30:07,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:30:07,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347495603] [2022-07-13 01:30:07,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347495603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:30:07,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:30:07,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:30:07,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694613014] [2022-07-13 01:30:07,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:30:07,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 01:30:07,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:30:07,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 01:30:07,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-13 01:30:07,334 INFO L87 Difference]: Start difference. First operand 1180 states and 1428 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:30:10,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:30:10,072 INFO L93 Difference]: Finished difference Result 2641 states and 3168 transitions. [2022-07-13 01:30:10,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:30:10,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-13 01:30:10,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:30:10,079 INFO L225 Difference]: With dead ends: 2641 [2022-07-13 01:30:10,079 INFO L226 Difference]: Without dead ends: 2641 [2022-07-13 01:30:10,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-07-13 01:30:10,080 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 1427 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 450 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 01:30:10,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1427 Valid, 3016 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1541 Invalid, 0 Unknown, 450 Unchecked, 2.6s Time] [2022-07-13 01:30:10,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2022-07-13 01:30:10,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 1617. [2022-07-13 01:30:10,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1169 states have (on average 1.872540633019675) internal successors, (2189), 1588 states have internal predecessors, (2189), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 01:30:10,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2239 transitions. [2022-07-13 01:30:10,102 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2239 transitions. Word has length 62 [2022-07-13 01:30:10,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:30:10,102 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 2239 transitions. [2022-07-13 01:30:10,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:30:10,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2239 transitions. [2022-07-13 01:30:10,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 01:30:10,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:30:10,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:30:10,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-07-13 01:30:10,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:30:10,314 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:30:10,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:30:10,314 INFO L85 PathProgramCache]: Analyzing trace with hash -203140861, now seen corresponding path program 1 times [2022-07-13 01:30:10,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:30:10,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85344778] [2022-07-13 01:30:10,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:30:10,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:30:10,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:30:10,316 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) [2022-07-13 01:30:10,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-13 01:30:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:30:10,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 01:30:10,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:30:10,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 01:30:10,689 INFO L390 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 [2022-07-13 01:30:10,733 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 01:30:10,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-13 01:30:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:11,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:30:11,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:30:11,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85344778] [2022-07-13 01:30:11,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85344778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:30:11,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:30:11,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 01:30:11,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425313286] [2022-07-13 01:30:11,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:30:11,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 01:30:11,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:30:11,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 01:30:11,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 01:30:11,117 INFO L87 Difference]: Start difference. First operand 1617 states and 2239 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:30:14,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:30:14,327 INFO L93 Difference]: Finished difference Result 1623 states and 2246 transitions. [2022-07-13 01:30:14,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 01:30:14,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-13 01:30:14,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:30:14,332 INFO L225 Difference]: With dead ends: 1623 [2022-07-13 01:30:14,332 INFO L226 Difference]: Without dead ends: 1623 [2022-07-13 01:30:14,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-13 01:30:14,333 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 111 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 2104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 01:30:14,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 2795 Invalid, 2108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2104 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 01:30:14,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2022-07-13 01:30:14,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1622. [2022-07-13 01:30:14,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1173 states have (on average 1.8695652173913044) internal successors, (2193), 1592 states have internal predecessors, (2193), 26 states have call successors, (26), 9 states have call predecessors, (26), 7 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-13 01:30:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2245 transitions. [2022-07-13 01:30:14,351 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2245 transitions. Word has length 62 [2022-07-13 01:30:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:30:14,351 INFO L495 AbstractCegarLoop]: Abstraction has 1622 states and 2245 transitions. [2022-07-13 01:30:14,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:30:14,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2245 transitions. [2022-07-13 01:30:14,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 01:30:14,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:30:14,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:30:14,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-13 01:30:14,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:30:14,564 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:30:14,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:30:14,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1864793253, now seen corresponding path program 1 times [2022-07-13 01:30:14,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:30:14,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543857991] [2022-07-13 01:30:14,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:30:14,565 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:30:14,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:30:14,567 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) [2022-07-13 01:30:14,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-13 01:30:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:30:14,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 01:30:14,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:30:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:14,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:30:14,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:30:14,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543857991] [2022-07-13 01:30:14,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543857991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:30:14,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:30:14,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 01:30:14,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902452458] [2022-07-13 01:30:14,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:30:14,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 01:30:14,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:30:14,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 01:30:14,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 01:30:14,823 INFO L87 Difference]: Start difference. First operand 1622 states and 2245 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:30:14,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:30:14,911 INFO L93 Difference]: Finished difference Result 1648 states and 2272 transitions. [2022-07-13 01:30:14,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 01:30:14,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-13 01:30:14,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:30:14,916 INFO L225 Difference]: With dead ends: 1648 [2022-07-13 01:30:14,916 INFO L226 Difference]: Without dead ends: 1648 [2022-07-13 01:30:14,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 01:30:14,917 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 19 mSDsluCounter, 3890 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4865 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 01:30:14,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4865 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 01:30:14,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-07-13 01:30:14,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1646. [2022-07-13 01:30:14,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1646 states, 1191 states have (on average 1.8606213266162888) internal successors, (2216), 1612 states have internal predecessors, (2216), 28 states have call successors, (28), 13 states have call predecessors, (28), 11 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-13 01:30:14,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2272 transitions. [2022-07-13 01:30:14,946 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2272 transitions. Word has length 68 [2022-07-13 01:30:14,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:30:14,947 INFO L495 AbstractCegarLoop]: Abstraction has 1646 states and 2272 transitions. [2022-07-13 01:30:14,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:30:14,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2272 transitions. [2022-07-13 01:30:14,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 01:30:14,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:30:14,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:30:14,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-13 01:30:15,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:30:15,162 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:30:15,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:30:15,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1913615011, now seen corresponding path program 1 times [2022-07-13 01:30:15,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:30:15,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754635560] [2022-07-13 01:30:15,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:30:15,163 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:30:15,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:30:15,165 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) [2022-07-13 01:30:15,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-13 01:30:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:30:15,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 01:30:15,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:30:15,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:15,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:30:15,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:30:15,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754635560] [2022-07-13 01:30:15,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754635560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:30:15,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:30:15,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 01:30:15,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45932292] [2022-07-13 01:30:15,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:30:15,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 01:30:15,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:30:15,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 01:30:15,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 01:30:15,507 INFO L87 Difference]: Start difference. First operand 1646 states and 2272 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-13 01:30:15,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:30:15,648 INFO L93 Difference]: Finished difference Result 1658 states and 2286 transitions. [2022-07-13 01:30:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 01:30:15,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 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 68 [2022-07-13 01:30:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:30:15,653 INFO L225 Difference]: With dead ends: 1658 [2022-07-13 01:30:15,653 INFO L226 Difference]: Without dead ends: 1658 [2022-07-13 01:30:15,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 01:30:15,654 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 23 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3799 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 01:30:15,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3799 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 01:30:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2022-07-13 01:30:15,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1649. [2022-07-13 01:30:15,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1193 states have (on average 1.859178541492037) internal successors, (2218), 1614 states have internal predecessors, (2218), 28 states have call successors, (28), 13 states have call predecessors, (28), 12 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2022-07-13 01:30:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2275 transitions. [2022-07-13 01:30:15,690 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2275 transitions. Word has length 68 [2022-07-13 01:30:15,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:30:15,691 INFO L495 AbstractCegarLoop]: Abstraction has 1649 states and 2275 transitions. [2022-07-13 01:30:15,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-13 01:30:15,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2275 transitions. [2022-07-13 01:30:15,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-13 01:30:15,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:30:15,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:30:15,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-13 01:30:15,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:30:15,902 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:30:15,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:30:15,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1847999061, now seen corresponding path program 1 times [2022-07-13 01:30:15,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:30:15,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504431628] [2022-07-13 01:30:15,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:30:15,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:30:15,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:30:15,905 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) [2022-07-13 01:30:15,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-13 01:30:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:30:16,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 01:30:16,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:30:16,224 INFO L390 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 [2022-07-13 01:30:16,321 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-13 01:30:16,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2022-07-13 01:30:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:16,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:30:16,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:30:16,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504431628] [2022-07-13 01:30:16,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504431628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:30:16,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:30:16,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 01:30:16,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164880697] [2022-07-13 01:30:16,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:30:16,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 01:30:16,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:30:16,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 01:30:16,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 01:30:16,330 INFO L87 Difference]: Start difference. First operand 1649 states and 2275 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 01:30:19,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:30:19,113 INFO L93 Difference]: Finished difference Result 2771 states and 3753 transitions. [2022-07-13 01:30:19,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 01:30:19,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 73 [2022-07-13 01:30:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:30:19,126 INFO L225 Difference]: With dead ends: 2771 [2022-07-13 01:30:19,126 INFO L226 Difference]: Without dead ends: 2771 [2022-07-13 01:30:19,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 01:30:19,127 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 1430 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 924 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 01:30:19,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 2987 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2110 Invalid, 0 Unknown, 924 Unchecked, 2.7s Time] [2022-07-13 01:30:19,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2771 states. [2022-07-13 01:30:19,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2771 to 1648. [2022-07-13 01:30:19,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1193 states have (on average 1.8575020955574182) internal successors, (2216), 1613 states have internal predecessors, (2216), 28 states have call successors, (28), 13 states have call predecessors, (28), 12 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2022-07-13 01:30:19,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2273 transitions. [2022-07-13 01:30:19,154 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2273 transitions. Word has length 73 [2022-07-13 01:30:19,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:30:19,155 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2273 transitions. [2022-07-13 01:30:19,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 01:30:19,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2273 transitions. [2022-07-13 01:30:19,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-13 01:30:19,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:30:19,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:30:19,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-07-13 01:30:19,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:30:19,370 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:30:19,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:30:19,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1847999062, now seen corresponding path program 1 times [2022-07-13 01:30:19,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:30:19,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998793608] [2022-07-13 01:30:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:30:19,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:30:19,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:30:19,372 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) [2022-07-13 01:30:19,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-13 01:30:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:30:19,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 01:30:19,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:30:19,759 INFO L390 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 [2022-07-13 01:30:19,767 INFO L390 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 [2022-07-13 01:30:22,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 01:30:22,120 INFO L390 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 [2022-07-13 01:30:22,128 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 01:30:22,128 INFO L390 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 12 treesize of output 12 [2022-07-13 01:30:22,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:22,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:30:22,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:30:22,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998793608] [2022-07-13 01:30:22,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998793608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:30:22,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:30:22,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 01:30:22,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079341220] [2022-07-13 01:30:22,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:30:22,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 01:30:22,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:30:22,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 01:30:22,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=29, Unknown=1, NotChecked=0, Total=42 [2022-07-13 01:30:22,147 INFO L87 Difference]: Start difference. First operand 1648 states and 2273 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 01:30:26,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:30:26,976 INFO L93 Difference]: Finished difference Result 2842 states and 3878 transitions. [2022-07-13 01:30:26,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 01:30:26,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 73 [2022-07-13 01:30:26,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:30:26,981 INFO L225 Difference]: With dead ends: 2842 [2022-07-13 01:30:26,981 INFO L226 Difference]: Without dead ends: 2842 [2022-07-13 01:30:26,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=17, Invalid=38, Unknown=1, NotChecked=0, Total=56 [2022-07-13 01:30:26,982 INFO L413 NwaCegarLoop]: 1061 mSDtfsCounter, 2203 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 3073 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2209 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 4166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 3073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1063 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-13 01:30:26,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2209 Valid, 3127 Invalid, 4166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 3073 Invalid, 0 Unknown, 1063 Unchecked, 4.7s Time] [2022-07-13 01:30:26,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2022-07-13 01:30:26,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1644. [2022-07-13 01:30:27,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1644 states, 1197 states have (on average 1.8412698412698412) internal successors, (2204), 1609 states have internal predecessors, (2204), 28 states have call successors, (28), 13 states have call predecessors, (28), 12 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2022-07-13 01:30:27,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2261 transitions. [2022-07-13 01:30:27,004 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2261 transitions. Word has length 73 [2022-07-13 01:30:27,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:30:27,004 INFO L495 AbstractCegarLoop]: Abstraction has 1644 states and 2261 transitions. [2022-07-13 01:30:27,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 01:30:27,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2261 transitions. [2022-07-13 01:30:27,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-13 01:30:27,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:30:27,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:30:27,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-13 01:30:27,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:30:27,216 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:30:27,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:30:27,217 INFO L85 PathProgramCache]: Analyzing trace with hash 816968073, now seen corresponding path program 1 times [2022-07-13 01:30:27,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:30:27,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096459486] [2022-07-13 01:30:27,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:30:27,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:30:27,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:30:27,218 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) [2022-07-13 01:30:27,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-13 01:30:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:30:27,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 01:30:27,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:30:27,514 INFO L390 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 [2022-07-13 01:30:27,534 INFO L390 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 [2022-07-13 01:30:27,562 INFO L390 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 [2022-07-13 01:30:27,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:27,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:30:27,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:30:27,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096459486] [2022-07-13 01:30:27,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096459486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:30:27,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:30:27,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 01:30:27,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819234910] [2022-07-13 01:30:27,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:30:27,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 01:30:27,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:30:27,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 01:30:27,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 01:30:27,589 INFO L87 Difference]: Start difference. First operand 1644 states and 2261 transitions. Second operand has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 01:30:30,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:30:30,471 INFO L93 Difference]: Finished difference Result 1659 states and 2277 transitions. [2022-07-13 01:30:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 01:30:30,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2022-07-13 01:30:30,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:30:30,474 INFO L225 Difference]: With dead ends: 1659 [2022-07-13 01:30:30,474 INFO L226 Difference]: Without dead ends: 1659 [2022-07-13 01:30:30,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-13 01:30:30,475 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 23 mSDsluCounter, 3121 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4082 SdHoareTripleChecker+Invalid, 2698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 01:30:30,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4082 Invalid, 2698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2696 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 01:30:30,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2022-07-13 01:30:30,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1658. [2022-07-13 01:30:30,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1658 states, 1209 states have (on average 1.836228287841191) internal successors, (2220), 1621 states have internal predecessors, (2220), 28 states have call successors, (28), 15 states have call predecessors, (28), 14 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2022-07-13 01:30:30,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2277 transitions. [2022-07-13 01:30:30,493 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2277 transitions. Word has length 80 [2022-07-13 01:30:30,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:30:30,493 INFO L495 AbstractCegarLoop]: Abstraction has 1658 states and 2277 transitions. [2022-07-13 01:30:30,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 01:30:30,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2277 transitions. [2022-07-13 01:30:30,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-13 01:30:30,494 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:30:30,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:30:30,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-13 01:30:30,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:30:30,704 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:30:30,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:30:30,705 INFO L85 PathProgramCache]: Analyzing trace with hash -443793445, now seen corresponding path program 1 times [2022-07-13 01:30:30,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:30:30,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658186397] [2022-07-13 01:30:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:30:30,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:30:30,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:30:30,707 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) [2022-07-13 01:30:30,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-13 01:30:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:30:30,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-13 01:30:30,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:30:30,997 INFO L390 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 [2022-07-13 01:30:31,022 INFO L390 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 [2022-07-13 01:30:31,028 INFO L390 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 [2022-07-13 01:30:31,062 INFO L390 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 [2022-07-13 01:30:31,076 INFO L390 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 [2022-07-13 01:30:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:31,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:30:31,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:30:31,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658186397] [2022-07-13 01:30:31,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658186397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:30:31,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:30:31,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 01:30:31,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006789989] [2022-07-13 01:30:31,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:30:31,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 01:30:31,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:30:31,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 01:30:31,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 01:30:31,136 INFO L87 Difference]: Start difference. First operand 1658 states and 2277 transitions. Second operand has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 01:30:35,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:30:35,143 INFO L93 Difference]: Finished difference Result 1658 states and 2275 transitions. [2022-07-13 01:30:35,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 01:30:35,144 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2022-07-13 01:30:35,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:30:35,152 INFO L225 Difference]: With dead ends: 1658 [2022-07-13 01:30:35,153 INFO L226 Difference]: Without dead ends: 1658 [2022-07-13 01:30:35,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-13 01:30:35,153 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 19 mSDsluCounter, 3924 mSDsCounter, 0 mSdLazyCounter, 2866 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4880 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-13 01:30:35,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4880 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2866 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-13 01:30:35,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2022-07-13 01:30:35,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1658. [2022-07-13 01:30:35,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1658 states, 1209 states have (on average 1.8345740281224152) internal successors, (2218), 1621 states have internal predecessors, (2218), 28 states have call successors, (28), 15 states have call predecessors, (28), 14 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2022-07-13 01:30:35,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2275 transitions. [2022-07-13 01:30:35,168 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2275 transitions. Word has length 81 [2022-07-13 01:30:35,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:30:35,169 INFO L495 AbstractCegarLoop]: Abstraction has 1658 states and 2275 transitions. [2022-07-13 01:30:35,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 01:30:35,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2275 transitions. [2022-07-13 01:30:35,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-13 01:30:35,169 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:30:35,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:30:35,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-13 01:30:35,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:30:35,379 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:30:35,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:30:35,380 INFO L85 PathProgramCache]: Analyzing trace with hash 540063607, now seen corresponding path program 1 times [2022-07-13 01:30:35,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:30:35,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911527280] [2022-07-13 01:30:35,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:30:35,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:30:35,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:30:35,382 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) [2022-07-13 01:30:35,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-13 01:30:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:30:35,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 01:30:35,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:30:35,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:35,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:30:35,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:30:35,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911527280] [2022-07-13 01:30:35,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911527280] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:30:35,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:30:35,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 01:30:35,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554274672] [2022-07-13 01:30:35,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:30:35,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 01:30:35,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:30:35,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 01:30:35,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:30:35,693 INFO L87 Difference]: Start difference. First operand 1658 states and 2275 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-13 01:30:35,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:30:35,741 INFO L93 Difference]: Finished difference Result 1674 states and 2293 transitions. [2022-07-13 01:30:35,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 01:30:35,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 88 [2022-07-13 01:30:35,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:30:35,745 INFO L225 Difference]: With dead ends: 1674 [2022-07-13 01:30:35,745 INFO L226 Difference]: Without dead ends: 1668 [2022-07-13 01:30:35,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-13 01:30:35,745 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 13 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:30:35,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2884 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:30:35,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-07-13 01:30:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1668. [2022-07-13 01:30:35,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1217 states have (on average 1.8307313064913722) internal successors, (2228), 1631 states have internal predecessors, (2228), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-07-13 01:30:35,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2287 transitions. [2022-07-13 01:30:35,762 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2287 transitions. Word has length 88 [2022-07-13 01:30:35,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:30:35,763 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 2287 transitions. [2022-07-13 01:30:35,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-13 01:30:35,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2287 transitions. [2022-07-13 01:30:35,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-13 01:30:35,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:30:35,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:30:35,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-13 01:30:35,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:30:35,974 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:30:35,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:30:35,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1380796229, now seen corresponding path program 1 times [2022-07-13 01:30:35,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:30:35,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249291528] [2022-07-13 01:30:35,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:30:35,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:30:35,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:30:35,976 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:30:35,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-13 01:30:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:30:36,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 01:30:36,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:30:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:36,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:30:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:36,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:30:36,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249291528] [2022-07-13 01:30:36,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249291528] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 01:30:36,450 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 01:30:36,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-07-13 01:30:36,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132472640] [2022-07-13 01:30:36,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 01:30:36,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 01:30:36,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:30:36,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 01:30:36,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-13 01:30:36,451 INFO L87 Difference]: Start difference. First operand 1668 states and 2287 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 01:30:36,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:30:36,630 INFO L93 Difference]: Finished difference Result 1694 states and 2317 transitions. [2022-07-13 01:30:36,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 01:30:36,632 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 89 [2022-07-13 01:30:36,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:30:36,634 INFO L225 Difference]: With dead ends: 1694 [2022-07-13 01:30:36,634 INFO L226 Difference]: Without dead ends: 1682 [2022-07-13 01:30:36,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-07-13 01:30:36,635 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 50 mSDsluCounter, 3847 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 4814 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 01:30:36,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 4814 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 01:30:36,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2022-07-13 01:30:36,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1676. [2022-07-13 01:30:36,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1225 states have (on average 1.826938775510204) internal successors, (2238), 1639 states have internal predecessors, (2238), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-07-13 01:30:36,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2297 transitions. [2022-07-13 01:30:36,651 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2297 transitions. Word has length 89 [2022-07-13 01:30:36,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:30:36,651 INFO L495 AbstractCegarLoop]: Abstraction has 1676 states and 2297 transitions. [2022-07-13 01:30:36,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 01:30:36,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2297 transitions. [2022-07-13 01:30:36,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 01:30:36,652 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:30:36,652 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:30:36,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-13 01:30:36,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:30:36,867 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:30:36,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:30:36,868 INFO L85 PathProgramCache]: Analyzing trace with hash 180173559, now seen corresponding path program 2 times [2022-07-13 01:30:36,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:30:36,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381710567] [2022-07-13 01:30:36,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 01:30:36,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:30:36,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:30:36,869 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:30:36,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-13 01:30:37,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 01:30:37,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 01:30:37,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 01:30:37,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:30:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:37,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:30:37,778 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:37,778 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:30:37,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381710567] [2022-07-13 01:30:37,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381710567] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 01:30:37,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 01:30:37,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-07-13 01:30:37,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185055455] [2022-07-13 01:30:37,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 01:30:37,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 01:30:37,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:30:37,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 01:30:37,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-07-13 01:30:37,780 INFO L87 Difference]: Start difference. First operand 1676 states and 2297 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 01:30:38,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:30:38,355 INFO L93 Difference]: Finished difference Result 1730 states and 2365 transitions. [2022-07-13 01:30:38,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 01:30:38,356 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 92 [2022-07-13 01:30:38,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:30:38,359 INFO L225 Difference]: With dead ends: 1730 [2022-07-13 01:30:38,359 INFO L226 Difference]: Without dead ends: 1718 [2022-07-13 01:30:38,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=343, Invalid=649, Unknown=0, NotChecked=0, Total=992 [2022-07-13 01:30:38,360 INFO L413 NwaCegarLoop]: 973 mSDtfsCounter, 63 mSDsluCounter, 7722 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 8695 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 01:30:38,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 8695 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 01:30:38,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2022-07-13 01:30:38,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1694. [2022-07-13 01:30:38,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1694 states, 1243 states have (on average 1.819790828640386) internal successors, (2262), 1657 states have internal predecessors, (2262), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-07-13 01:30:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2321 transitions. [2022-07-13 01:30:38,383 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2321 transitions. Word has length 92 [2022-07-13 01:30:38,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:30:38,384 INFO L495 AbstractCegarLoop]: Abstraction has 1694 states and 2321 transitions. [2022-07-13 01:30:38,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 01:30:38,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2321 transitions. [2022-07-13 01:30:38,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 01:30:38,385 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:30:38,385 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:30:38,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-13 01:30:38,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:30:38,597 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:30:38,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:30:38,598 INFO L85 PathProgramCache]: Analyzing trace with hash -231196617, now seen corresponding path program 3 times [2022-07-13 01:30:38,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:30:38,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360716275] [2022-07-13 01:30:38,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 01:30:38,599 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:30:38,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:30:38,600 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:30:38,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-13 01:30:39,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-13 01:30:39,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 01:30:39,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 01:30:39,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:30:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:39,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:30:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:40,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:30:40,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360716275] [2022-07-13 01:30:40,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360716275] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 01:30:40,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 01:30:40,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-07-13 01:30:40,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061646659] [2022-07-13 01:30:40,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 01:30:40,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-13 01:30:40,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:30:40,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-13 01:30:40,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2022-07-13 01:30:40,465 INFO L87 Difference]: Start difference. First operand 1694 states and 2321 transitions. Second operand has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 01:30:43,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:30:43,620 INFO L93 Difference]: Finished difference Result 1802 states and 2469 transitions. [2022-07-13 01:30:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-13 01:30:43,621 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 98 [2022-07-13 01:30:43,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:30:43,629 INFO L225 Difference]: With dead ends: 1802 [2022-07-13 01:30:43,630 INFO L226 Difference]: Without dead ends: 1784 [2022-07-13 01:30:43,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=924, Invalid=1832, Unknown=0, NotChecked=0, Total=2756 [2022-07-13 01:30:43,631 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 206 mSDsluCounter, 12709 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 13694 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:30:43,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 13694 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 01:30:43,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2022-07-13 01:30:43,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1730. [2022-07-13 01:30:43,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1279 states have (on average 1.8045347928068804) internal successors, (2308), 1693 states have internal predecessors, (2308), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-07-13 01:30:43,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2367 transitions. [2022-07-13 01:30:43,660 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2367 transitions. Word has length 98 [2022-07-13 01:30:43,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:30:43,661 INFO L495 AbstractCegarLoop]: Abstraction has 1730 states and 2367 transitions. [2022-07-13 01:30:43,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 01:30:43,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2367 transitions. [2022-07-13 01:30:43,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-13 01:30:43,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:30:43,662 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:30:43,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-07-13 01:30:43,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:30:43,876 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:30:43,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:30:43,877 INFO L85 PathProgramCache]: Analyzing trace with hash 922313399, now seen corresponding path program 4 times [2022-07-13 01:30:43,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:30:43,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941653727] [2022-07-13 01:30:43,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 01:30:43,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:30:43,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:30:43,879 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:30:43,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-13 01:30:44,271 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 01:30:44,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 01:30:44,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-13 01:30:44,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:30:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:44,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:30:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:30:46,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:30:46,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941653727] [2022-07-13 01:30:46,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941653727] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 01:30:46,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 01:30:46,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2022-07-13 01:30:46,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743008100] [2022-07-13 01:30:46,520 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 01:30:46,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-13 01:30:46,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:30:46,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-13 01:30:46,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=1927, Unknown=0, NotChecked=0, Total=2652 [2022-07-13 01:30:46,522 INFO L87 Difference]: Start difference. First operand 1730 states and 2367 transitions. Second operand has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 01:30:56,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:30:56,086 INFO L93 Difference]: Finished difference Result 1936 states and 2637 transitions. [2022-07-13 01:30:56,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-07-13 01:30:56,087 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 110 [2022-07-13 01:30:56,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:30:56,090 INFO L225 Difference]: With dead ends: 1936 [2022-07-13 01:30:56,090 INFO L226 Difference]: Without dead ends: 1924 [2022-07-13 01:30:56,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=4121, Invalid=9921, Unknown=0, NotChecked=0, Total=14042 [2022-07-13 01:30:56,093 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 501 mSDsluCounter, 24033 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 25040 SdHoareTripleChecker+Invalid, 2967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 01:30:56,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 25040 Invalid, 2967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 01:30:56,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2022-07-13 01:30:56,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1798. [2022-07-13 01:30:56,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1347 states have (on average 1.78173719376392) internal successors, (2400), 1761 states have internal predecessors, (2400), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-07-13 01:30:56,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2459 transitions. [2022-07-13 01:30:56,112 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2459 transitions. Word has length 110 [2022-07-13 01:30:56,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:30:56,112 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 2459 transitions. [2022-07-13 01:30:56,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 01:30:56,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2459 transitions. [2022-07-13 01:30:56,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-13 01:30:56,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:30:56,114 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:30:56,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-13 01:30:56,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:30:56,327 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:30:56,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:30:56,328 INFO L85 PathProgramCache]: Analyzing trace with hash 897981943, now seen corresponding path program 5 times [2022-07-13 01:30:56,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:30:56,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138642863] [2022-07-13 01:30:56,328 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 01:30:56,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:30:56,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:30:56,330 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:30:56,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-13 01:30:57,733 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-07-13 01:30:57,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 01:30:57,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-13 01:30:57,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:30:57,793 INFO L390 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 [2022-07-13 01:30:57,899 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-13 01:30:57,900 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 25 [2022-07-13 01:30:57,924 INFO L390 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 [2022-07-13 01:30:58,023 INFO L390 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 [2022-07-13 01:30:59,568 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 01:30:59,568 INFO L390 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 34 treesize of output 35 [2022-07-13 01:30:59,607 INFO L390 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 [2022-07-13 01:30:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-07-13 01:30:59,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:30:59,953 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2663 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_2663) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))))) is different from false [2022-07-13 01:30:59,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:30:59,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138642863] [2022-07-13 01:30:59,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138642863] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 01:30:59,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2041270403] [2022-07-13 01:30:59,955 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 01:30:59,955 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-13 01:30:59,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-13 01:30:59,957 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-13 01:30:59,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-07-13 01:32:32,066 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-07-13 01:32:32,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 01:32:32,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-13 01:32:32,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:32:32,340 INFO L390 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 [2022-07-13 01:32:32,419 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-13 01:32:32,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 25 [2022-07-13 01:32:32,432 INFO L390 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 [2022-07-13 01:32:32,475 INFO L390 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 [2022-07-13 01:32:33,875 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 01:32:33,876 INFO L390 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 34 treesize of output 35 [2022-07-13 01:32:33,907 INFO L390 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 [2022-07-13 01:32:33,914 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-07-13 01:32:33,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:32:34,140 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3142 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3142) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))))) is different from false [2022-07-13 01:32:34,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2041270403] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 01:32:34,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 01:32:34,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2022-07-13 01:32:34,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499142204] [2022-07-13 01:32:34,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 01:32:34,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 01:32:34,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 01:32:34,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 01:32:34,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=191, Unknown=15, NotChecked=58, Total=306 [2022-07-13 01:32:34,143 INFO L87 Difference]: Start difference. First operand 1798 states and 2459 transitions. Second operand has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 01:32:40,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:32:40,467 INFO L93 Difference]: Finished difference Result 3156 states and 4275 transitions. [2022-07-13 01:32:40,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 01:32:40,467 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 132 [2022-07-13 01:32:40,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:32:40,470 INFO L225 Difference]: With dead ends: 3156 [2022-07-13 01:32:40,471 INFO L226 Difference]: Without dead ends: 3156 [2022-07-13 01:32:40,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 165 SyntacticMatches, 90 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=95, Invalid=441, Unknown=24, NotChecked=90, Total=650 [2022-07-13 01:32:40,471 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 1612 mSDsluCounter, 7144 mSDsCounter, 0 mSdLazyCounter, 5569 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 8006 SdHoareTripleChecker+Invalid, 8435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2836 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:32:40,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 8006 Invalid, 8435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 5569 Invalid, 0 Unknown, 2836 Unchecked, 6.0s Time] [2022-07-13 01:32:40,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2022-07-13 01:32:40,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 1795. [2022-07-13 01:32:40,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1347 states have (on average 1.77728285077951) internal successors, (2394), 1758 states have internal predecessors, (2394), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-07-13 01:32:40,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2453 transitions. [2022-07-13 01:32:40,490 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2453 transitions. Word has length 132 [2022-07-13 01:32:40,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:32:40,490 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 2453 transitions. [2022-07-13 01:32:40,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 01:32:40,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2453 transitions. [2022-07-13 01:32:40,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-13 01:32:40,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:32:40,491 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:32:40,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-07-13 01:32:40,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-07-13 01:32:40,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 01:32:40,904 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-07-13 01:32:40,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:32:40,905 INFO L85 PathProgramCache]: Analyzing trace with hash 897981944, now seen corresponding path program 1 times [2022-07-13 01:32:40,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 01:32:40,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423569338] [2022-07-13 01:32:40,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:32:40,905 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 01:32:40,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 01:32:40,906 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 01:32:40,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-13 01:32:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:32:41,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 120 conjunts are in the unsatisfiable core [2022-07-13 01:32:41,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:32:41,745 INFO L390 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 [2022-07-13 01:32:41,914 INFO L390 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 [2022-07-13 01:32:41,943 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 01:32:41,944 INFO L390 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 12 treesize of output 12 [2022-07-13 01:32:41,965 INFO L390 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 [2022-07-13 01:32:41,981 INFO L390 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 [2022-07-13 01:32:42,061 INFO L390 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 18 treesize of output 10 [2022-07-13 01:32:42,064 INFO L390 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 7 treesize of output 3 [2022-07-13 01:32:43,426 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 01:32:43,426 INFO L390 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 [2022-07-13 01:32:43,431 INFO L390 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 [2022-07-13 01:32:43,480 INFO L390 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 25 treesize of output 13 [2022-07-13 01:32:43,483 INFO L390 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 15 treesize of output 7 [2022-07-13 01:32:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-07-13 01:32:43,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:32:44,260 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3712 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3712) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))))) (forall ((v_ArrVal_3712 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3712) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd .cse1 (_ bv20 32)))))) is different from false [2022-07-13 01:32:44,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 01:32:44,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423569338] [2022-07-13 01:32:44,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423569338] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 01:32:44,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [33477557] [2022-07-13 01:32:44,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:32:44,278 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-13 01:32:44,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-13 01:32:44,279 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-13 01:32:44,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process