./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.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 7408f3b7e084094987873e007e2bbb0a022372240d1ad946af6301d3e9707406 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 00:05:16,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 00:05:16,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 00:05:16,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 00:05:16,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 00:05:16,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 00:05:16,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 00:05:16,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 00:05:16,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 00:05:16,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 00:05:16,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 00:05:16,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 00:05:16,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 00:05:16,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 00:05:16,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 00:05:16,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 00:05:16,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 00:05:16,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 00:05:16,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 00:05:16,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 00:05:16,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 00:05:16,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 00:05:16,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 00:05:16,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 00:05:16,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 00:05:16,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 00:05:16,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 00:05:16,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 00:05:16,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 00:05:16,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 00:05:16,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 00:05:16,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 00:05:16,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 00:05:16,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 00:05:16,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 00:05:16,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 00:05:16,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 00:05:16,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 00:05:16,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 00:05:16,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 00:05:16,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 00:05:16,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-22 00:05:16,688 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 00:05:16,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 00:05:16,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 00:05:16,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 00:05:16,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 00:05:16,692 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 00:05:16,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 00:05:16,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 00:05:16,692 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 00:05:16,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 00:05:16,693 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 00:05:16,693 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 00:05:16,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 00:05:16,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 00:05:16,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 00:05:16,694 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 00:05:16,694 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 00:05:16,694 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 00:05:16,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 00:05:16,694 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 00:05:16,695 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 00:05:16,695 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 00:05:16,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 00:05:16,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 00:05:16,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 00:05:16,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:05:16,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 00:05:16,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 00:05:16,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 00:05:16,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 00:05:16,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 00:05:16,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7408f3b7e084094987873e007e2bbb0a022372240d1ad946af6301d3e9707406 [2021-12-22 00:05:16,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 00:05:16,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 00:05:16,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 00:05:16,897 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 00:05:16,898 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 00:05:16,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i [2021-12-22 00:05:16,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ee90f221/0970f176c6704b0ea7123550167ef3c2/FLAGe57befd14 [2021-12-22 00:05:17,345 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 00:05:17,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i [2021-12-22 00:05:17,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ee90f221/0970f176c6704b0ea7123550167ef3c2/FLAGe57befd14 [2021-12-22 00:05:17,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ee90f221/0970f176c6704b0ea7123550167ef3c2 [2021-12-22 00:05:17,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 00:05:17,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 00:05:17,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 00:05:17,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 00:05:17,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 00:05:17,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:05:17" (1/1) ... [2021-12-22 00:05:17,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ce0bedb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:17, skipping insertion in model container [2021-12-22 00:05:17,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:05:17" (1/1) ... [2021-12-22 00:05:17,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 00:05:17,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:05:17,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:05:17,667 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-22 00:05:17,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c017943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:17, skipping insertion in model container [2021-12-22 00:05:17,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 00:05:17,668 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-22 00:05:17,670 INFO L158 Benchmark]: Toolchain (without parser) took 286.04ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 72.9MB in the beginning and 109.5MB in the end (delta: -36.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 00:05:17,671 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 102.8MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 00:05:17,672 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.10ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 72.5MB in the beginning and 109.5MB in the end (delta: -37.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-22 00:05:17,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 102.8MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.10ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 72.5MB in the beginning and 109.5MB in the end (delta: -37.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 555]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.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 7408f3b7e084094987873e007e2bbb0a022372240d1ad946af6301d3e9707406 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 00:05:19,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 00:05:19,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 00:05:19,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 00:05:19,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 00:05:19,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 00:05:19,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 00:05:19,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 00:05:19,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 00:05:19,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 00:05:19,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 00:05:19,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 00:05:19,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 00:05:19,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 00:05:19,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 00:05:19,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 00:05:19,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 00:05:19,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 00:05:19,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 00:05:19,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 00:05:19,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 00:05:19,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 00:05:19,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 00:05:19,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 00:05:19,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 00:05:19,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 00:05:19,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 00:05:19,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 00:05:19,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 00:05:19,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 00:05:19,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 00:05:19,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 00:05:19,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 00:05:19,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 00:05:19,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 00:05:19,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 00:05:19,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 00:05:19,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 00:05:19,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 00:05:19,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 00:05:19,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 00:05:19,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-22 00:05:19,448 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 00:05:19,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 00:05:19,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 00:05:19,449 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 00:05:19,450 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 00:05:19,450 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 00:05:19,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 00:05:19,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 00:05:19,451 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 00:05:19,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 00:05:19,452 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 00:05:19,452 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 00:05:19,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 00:05:19,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 00:05:19,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 00:05:19,453 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 00:05:19,453 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 00:05:19,453 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 00:05:19,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 00:05:19,453 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 00:05:19,453 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 00:05:19,453 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 00:05:19,454 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 00:05:19,454 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 00:05:19,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 00:05:19,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 00:05:19,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 00:05:19,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:05:19,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 00:05:19,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 00:05:19,455 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 00:05:19,455 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 00:05:19,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 00:05:19,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 00:05:19,455 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7408f3b7e084094987873e007e2bbb0a022372240d1ad946af6301d3e9707406 [2021-12-22 00:05:19,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 00:05:19,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 00:05:19,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 00:05:19,732 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 00:05:19,733 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 00:05:19,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i [2021-12-22 00:05:19,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9237dd3a3/8c319c95f735422f80d0c5efdce5af3e/FLAG1ec295996 [2021-12-22 00:05:20,210 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 00:05:20,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i [2021-12-22 00:05:20,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9237dd3a3/8c319c95f735422f80d0c5efdce5af3e/FLAG1ec295996 [2021-12-22 00:05:20,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9237dd3a3/8c319c95f735422f80d0c5efdce5af3e [2021-12-22 00:05:20,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 00:05:20,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 00:05:20,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 00:05:20,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 00:05:20,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 00:05:20,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:05:20" (1/1) ... [2021-12-22 00:05:20,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca97b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:20, skipping insertion in model container [2021-12-22 00:05:20,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:05:20" (1/1) ... [2021-12-22 00:05:20,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 00:05:20,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:05:20,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:05:20,564 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-22 00:05:20,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:05:20,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:05:20,594 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 00:05:20,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:05:20,643 INFO L208 MainTranslator]: Completed translation [2021-12-22 00:05:20,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:20 WrapperNode [2021-12-22 00:05:20,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 00:05:20,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 00:05:20,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 00:05:20,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 00:05:20,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:20" (1/1) ... [2021-12-22 00:05:20,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:20" (1/1) ... [2021-12-22 00:05:20,689 INFO L137 Inliner]: procedures = 129, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 110 [2021-12-22 00:05:20,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 00:05:20,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 00:05:20,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 00:05:20,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 00:05:20,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:20" (1/1) ... [2021-12-22 00:05:20,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:20" (1/1) ... [2021-12-22 00:05:20,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:20" (1/1) ... [2021-12-22 00:05:20,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:20" (1/1) ... [2021-12-22 00:05:20,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:20" (1/1) ... [2021-12-22 00:05:20,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:20" (1/1) ... [2021-12-22 00:05:20,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:20" (1/1) ... [2021-12-22 00:05:20,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 00:05:20,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 00:05:20,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 00:05:20,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 00:05:20,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:20" (1/1) ... [2021-12-22 00:05:20,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:05:20,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:05:20,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 00:05:20,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 00:05:20,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 00:05:20,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 00:05:20,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 00:05:20,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 00:05:20,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 00:05:20,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 00:05:20,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-22 00:05:20,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 00:05:20,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 00:05:20,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 00:05:20,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 00:05:20,887 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 00:05:20,888 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 00:05:21,165 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 00:05:21,169 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 00:05:21,170 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-22 00:05:21,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:05:21 BoogieIcfgContainer [2021-12-22 00:05:21,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 00:05:21,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 00:05:21,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 00:05:21,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 00:05:21,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:05:20" (1/3) ... [2021-12-22 00:05:21,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0149b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:05:21, skipping insertion in model container [2021-12-22 00:05:21,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:20" (2/3) ... [2021-12-22 00:05:21,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0149b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:05:21, skipping insertion in model container [2021-12-22 00:05:21,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:05:21" (3/3) ... [2021-12-22 00:05:21,176 INFO L111 eAbstractionObserver]: Analyzing ICFG optional_data_creation_test04-1.i [2021-12-22 00:05:21,179 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 00:05:21,180 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-12-22 00:05:21,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 00:05:21,234 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 00:05:21,235 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-12-22 00:05:21,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 97 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:21,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-22 00:05:21,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:21,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-22 00:05:21,252 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:21,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:21,255 INFO L85 PathProgramCache]: Analyzing trace with hash 925637, now seen corresponding path program 1 times [2021-12-22 00:05:21,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:21,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241249757] [2021-12-22 00:05:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:21,265 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:21,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:21,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:21,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 00:05:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:21,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 00:05:21,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:21,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:21,465 INFO L353 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-22 00:05:21,465 INFO L387 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 [2021-12-22 00:05:21,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:21,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:21,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:21,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241249757] [2021-12-22 00:05:21,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241249757] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:21,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:21,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:05:21,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560761129] [2021-12-22 00:05:21,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:21,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:05:21,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:21,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:05:21,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:05:21,525 INFO L87 Difference]: Start difference. First operand has 98 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 97 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:21,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:21,778 INFO L93 Difference]: Finished difference Result 148 states and 157 transitions. [2021-12-22 00:05:21,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 00:05:21,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-12-22 00:05:21,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:21,787 INFO L225 Difference]: With dead ends: 148 [2021-12-22 00:05:21,787 INFO L226 Difference]: Without dead ends: 146 [2021-12-22 00:05:21,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:05:21,793 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 209 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:21,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 94 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:21,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-22 00:05:21,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 93. [2021-12-22 00:05:21,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 52 states have (on average 1.9230769230769231) internal successors, (100), 92 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:21,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2021-12-22 00:05:21,846 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 4 [2021-12-22 00:05:21,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:21,847 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2021-12-22 00:05:21,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:21,847 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2021-12-22 00:05:21,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-22 00:05:21,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:21,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-22 00:05:21,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-22 00:05:22,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:22,083 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:22,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:22,085 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times [2021-12-22 00:05:22,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:22,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919594352] [2021-12-22 00:05:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:22,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:22,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:22,087 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:22,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-22 00:05:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:22,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 00:05:22,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:22,187 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:22,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:22,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:05:22,265 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-22 00:05:22,286 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:05:22,287 INFO L387 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 11 treesize of output 11 [2021-12-22 00:05:22,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:22,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:22,307 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:22,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919594352] [2021-12-22 00:05:22,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919594352] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:22,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:22,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:05:22,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900530147] [2021-12-22 00:05:22,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:22,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:05:22,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:22,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:05:22,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:05:22,309 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:22,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:22,618 INFO L93 Difference]: Finished difference Result 236 states and 253 transitions. [2021-12-22 00:05:22,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:05:22,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-12-22 00:05:22,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:22,619 INFO L225 Difference]: With dead ends: 236 [2021-12-22 00:05:22,619 INFO L226 Difference]: Without dead ends: 236 [2021-12-22 00:05:22,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:05:22,620 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 235 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:22,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 97 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 00:05:22,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-12-22 00:05:22,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 107. [2021-12-22 00:05:22,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 67 states have (on average 1.8208955223880596) internal successors, (122), 106 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:22,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2021-12-22 00:05:22,626 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 4 [2021-12-22 00:05:22,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:22,627 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2021-12-22 00:05:22,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:22,627 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2021-12-22 00:05:22,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 00:05:22,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:22,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 00:05:22,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-22 00:05:22,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:22,834 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:22,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:22,835 INFO L85 PathProgramCache]: Analyzing trace with hash 28694727, now seen corresponding path program 1 times [2021-12-22 00:05:22,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:22,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416114436] [2021-12-22 00:05:22,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:22,835 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:22,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:22,836 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:22,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-22 00:05:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:22,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 00:05:22,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:22,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:22,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:22,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:22,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416114436] [2021-12-22 00:05:22,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416114436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:22,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:22,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:05:22,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812391977] [2021-12-22 00:05:22,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:22,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:05:22,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:22,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:05:22,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:05:22,951 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:23,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:23,108 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2021-12-22 00:05:23,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:05:23,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-22 00:05:23,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:23,109 INFO L225 Difference]: With dead ends: 136 [2021-12-22 00:05:23,109 INFO L226 Difference]: Without dead ends: 136 [2021-12-22 00:05:23,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:05:23,110 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 75 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:23,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 87 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:23,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-22 00:05:23,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 105. [2021-12-22 00:05:23,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 67 states have (on average 1.7761194029850746) internal successors, (119), 104 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:23,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2021-12-22 00:05:23,115 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 5 [2021-12-22 00:05:23,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:23,116 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2021-12-22 00:05:23,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:23,116 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2021-12-22 00:05:23,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 00:05:23,116 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:23,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 00:05:23,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:23,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:23,317 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:23,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:23,318 INFO L85 PathProgramCache]: Analyzing trace with hash 28694728, now seen corresponding path program 1 times [2021-12-22 00:05:23,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:23,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910885848] [2021-12-22 00:05:23,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:23,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:23,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:23,320 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:23,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-22 00:05:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:23,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 00:05:23,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:23,403 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:23,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:23,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:23,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910885848] [2021-12-22 00:05:23,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910885848] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:23,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:23,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:05:23,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923637861] [2021-12-22 00:05:23,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:23,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:05:23,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:23,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:05:23,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:05:23,418 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:23,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:23,593 INFO L93 Difference]: Finished difference Result 180 states and 203 transitions. [2021-12-22 00:05:23,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:05:23,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-22 00:05:23,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:23,595 INFO L225 Difference]: With dead ends: 180 [2021-12-22 00:05:23,595 INFO L226 Difference]: Without dead ends: 180 [2021-12-22 00:05:23,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:05:23,596 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 72 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:23,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 114 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-12-22 00:05:23,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 108. [2021-12-22 00:05:23,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.732394366197183) internal successors, (123), 107 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:23,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2021-12-22 00:05:23,600 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 5 [2021-12-22 00:05:23,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:23,600 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2021-12-22 00:05:23,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:23,600 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2021-12-22 00:05:23,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 00:05:23,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:23,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:23,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-22 00:05:23,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:23,807 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:23,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:23,811 INFO L85 PathProgramCache]: Analyzing trace with hash 234239181, now seen corresponding path program 1 times [2021-12-22 00:05:23,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:23,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723561520] [2021-12-22 00:05:23,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:23,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:23,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:23,813 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:23,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-22 00:05:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:23,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 00:05:23,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:23,910 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:23,925 INFO L353 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-22 00:05:23,925 INFO L387 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 [2021-12-22 00:05:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:23,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:23,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:23,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723561520] [2021-12-22 00:05:23,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723561520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:23,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:23,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:05:23,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444555146] [2021-12-22 00:05:23,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:23,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:05:23,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:23,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:05:23,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:05:23,941 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2021-12-22 00:05:24,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:24,089 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2021-12-22 00:05:24,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:05:24,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 [2021-12-22 00:05:24,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:24,090 INFO L225 Difference]: With dead ends: 151 [2021-12-22 00:05:24,090 INFO L226 Difference]: Without dead ends: 151 [2021-12-22 00:05:24,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:05:24,092 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 69 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:24,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 144 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:05:24,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-22 00:05:24,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 104. [2021-12-22 00:05:24,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 71 states have (on average 1.6619718309859155) internal successors, (118), 103 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:24,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 118 transitions. [2021-12-22 00:05:24,110 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 118 transitions. Word has length 9 [2021-12-22 00:05:24,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:24,110 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 118 transitions. [2021-12-22 00:05:24,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2021-12-22 00:05:24,110 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 118 transitions. [2021-12-22 00:05:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 00:05:24,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:24,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:24,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:24,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:24,318 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:24,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:24,318 INFO L85 PathProgramCache]: Analyzing trace with hash 234239182, now seen corresponding path program 1 times [2021-12-22 00:05:24,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:24,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561342177] [2021-12-22 00:05:24,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:24,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:24,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:24,321 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:24,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-22 00:05:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:24,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 00:05:24,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:24,398 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:24,402 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:24,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:05:24,443 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-22 00:05:24,449 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:05:24,449 INFO L387 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 11 treesize of output 11 [2021-12-22 00:05:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:24,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:24,458 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:24,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561342177] [2021-12-22 00:05:24,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561342177] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:24,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:24,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:05:24,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704717233] [2021-12-22 00:05:24,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:24,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:05:24,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:24,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:05:24,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:05:24,460 INFO L87 Difference]: Start difference. First operand 104 states and 118 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) [2021-12-22 00:05:24,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:24,660 INFO L93 Difference]: Finished difference Result 200 states and 220 transitions. [2021-12-22 00:05:24,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 00:05:24,660 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 [2021-12-22 00:05:24,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:24,661 INFO L225 Difference]: With dead ends: 200 [2021-12-22 00:05:24,661 INFO L226 Difference]: Without dead ends: 200 [2021-12-22 00:05:24,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:05:24,662 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 183 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:24,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 166 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:24,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-12-22 00:05:24,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 100. [2021-12-22 00:05:24,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.591549295774648) internal successors, (113), 99 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:24,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2021-12-22 00:05:24,665 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 9 [2021-12-22 00:05:24,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:24,665 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2021-12-22 00:05:24,665 INFO L471 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) [2021-12-22 00:05:24,665 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2021-12-22 00:05:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 00:05:24,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:24,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:24,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:24,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:24,876 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:24,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:24,877 INFO L85 PathProgramCache]: Analyzing trace with hash 184732728, now seen corresponding path program 1 times [2021-12-22 00:05:24,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:24,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263921136] [2021-12-22 00:05:24,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:24,877 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:24,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:24,879 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:24,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-22 00:05:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:24,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 00:05:24,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:24,997 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:25,013 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:05:25,039 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-22 00:05:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:25,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:25,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:25,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263921136] [2021-12-22 00:05:25,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263921136] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:25,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:25,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:05:25,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673542018] [2021-12-22 00:05:25,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:25,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:05:25,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:25,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:05:25,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:05:25,046 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:25,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:25,245 INFO L93 Difference]: Finished difference Result 109 states and 123 transitions. [2021-12-22 00:05:25,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:05:25,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-22 00:05:25,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:25,246 INFO L225 Difference]: With dead ends: 109 [2021-12-22 00:05:25,247 INFO L226 Difference]: Without dead ends: 109 [2021-12-22 00:05:25,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:05:25,248 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 8 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:25,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 216 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:25,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-12-22 00:05:25,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2021-12-22 00:05:25,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 74 states have (on average 1.5945945945945945) internal successors, (118), 102 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:25,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2021-12-22 00:05:25,262 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 13 [2021-12-22 00:05:25,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:25,263 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2021-12-22 00:05:25,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:25,263 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2021-12-22 00:05:25,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 00:05:25,267 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:25,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:25,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:25,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:25,474 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:25,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:25,475 INFO L85 PathProgramCache]: Analyzing trace with hash 184732729, now seen corresponding path program 1 times [2021-12-22 00:05:25,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:25,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399187395] [2021-12-22 00:05:25,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:25,476 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:25,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:25,477 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:25,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-22 00:05:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:25,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-22 00:05:25,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:25,605 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:25,638 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:05:25,657 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:05:25,736 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-22 00:05:25,741 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-22 00:05:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:25,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:25,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:25,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399187395] [2021-12-22 00:05:25,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399187395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:25,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:25,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:05:25,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868605715] [2021-12-22 00:05:25,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:25,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:05:25,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:25,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:05:25,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:05:25,757 INFO L87 Difference]: Start difference. First operand 103 states and 118 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:26,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:26,001 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2021-12-22 00:05:26,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:05:26,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-22 00:05:26,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:26,002 INFO L225 Difference]: With dead ends: 104 [2021-12-22 00:05:26,002 INFO L226 Difference]: Without dead ends: 104 [2021-12-22 00:05:26,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:05:26,003 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 5 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:26,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 218 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:26,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-22 00:05:26,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2021-12-22 00:05:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 74 states have (on average 1.5675675675675675) internal successors, (116), 102 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:26,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2021-12-22 00:05:26,005 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 13 [2021-12-22 00:05:26,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:26,005 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2021-12-22 00:05:26,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:26,005 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2021-12-22 00:05:26,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-22 00:05:26,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:26,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:26,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:26,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:26,207 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:26,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:26,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1897191059, now seen corresponding path program 1 times [2021-12-22 00:05:26,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:26,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840186655] [2021-12-22 00:05:26,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:26,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:26,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:26,211 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) [2021-12-22 00:05:26,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-22 00:05:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:26,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 00:05:26,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:26,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:05:26,359 INFO L387 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 14 treesize of output 16 [2021-12-22 00:05:26,368 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:05:26,368 INFO L387 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 [2021-12-22 00:05:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:26,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:26,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:26,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840186655] [2021-12-22 00:05:26,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840186655] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:26,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:26,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:05:26,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401561888] [2021-12-22 00:05:26,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:26,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:05:26,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:26,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:05:26,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:05:26,421 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:26,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:26,600 INFO L93 Difference]: Finished difference Result 133 states and 143 transitions. [2021-12-22 00:05:26,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:05:26,600 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-22 00:05:26,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:26,601 INFO L225 Difference]: With dead ends: 133 [2021-12-22 00:05:26,601 INFO L226 Difference]: Without dead ends: 133 [2021-12-22 00:05:26,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-12-22 00:05:26,602 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 411 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:26,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 65 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:05:26,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-22 00:05:26,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 98. [2021-12-22 00:05:26,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 70 states have (on average 1.5857142857142856) internal successors, (111), 97 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:26,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2021-12-22 00:05:26,604 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 15 [2021-12-22 00:05:26,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:26,604 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2021-12-22 00:05:26,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:26,605 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2021-12-22 00:05:26,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 00:05:26,605 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:26,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:26,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:26,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:26,806 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:26,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:26,806 INFO L85 PathProgramCache]: Analyzing trace with hash -734113802, now seen corresponding path program 1 times [2021-12-22 00:05:26,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:26,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603391744] [2021-12-22 00:05:26,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:26,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:26,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:26,808 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:26,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-22 00:05:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:26,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 00:05:26,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:26,984 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:26,999 INFO L387 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 16 treesize of output 8 [2021-12-22 00:05:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:27,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:27,007 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:27,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603391744] [2021-12-22 00:05:27,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603391744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:27,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:27,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:05:27,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499163271] [2021-12-22 00:05:27,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:27,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:05:27,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:27,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:05:27,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:05:27,009 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:27,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:27,184 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2021-12-22 00:05:27,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:05:27,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-22 00:05:27,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:27,185 INFO L225 Difference]: With dead ends: 137 [2021-12-22 00:05:27,185 INFO L226 Difference]: Without dead ends: 137 [2021-12-22 00:05:27,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:05:27,186 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 164 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:27,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 174 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:05:27,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-22 00:05:27,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 98. [2021-12-22 00:05:27,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 70 states have (on average 1.5714285714285714) internal successors, (110), 97 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:27,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2021-12-22 00:05:27,189 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 17 [2021-12-22 00:05:27,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:27,190 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2021-12-22 00:05:27,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:27,191 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2021-12-22 00:05:27,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 00:05:27,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:27,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:27,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:27,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:27,405 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:27,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:27,406 INFO L85 PathProgramCache]: Analyzing trace with hash -734113798, now seen corresponding path program 1 times [2021-12-22 00:05:27,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:27,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205287268] [2021-12-22 00:05:27,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:27,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:27,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:27,407 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:27,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-22 00:05:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:27,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 00:05:27,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:27,480 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:27,557 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:27,579 INFO L387 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 17 treesize of output 9 [2021-12-22 00:05:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:27,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:27,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:27,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205287268] [2021-12-22 00:05:27,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205287268] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:27,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:27,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:05:27,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649778330] [2021-12-22 00:05:27,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:27,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:05:27,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:27,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:05:27,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:05:27,587 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:27,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:27,818 INFO L93 Difference]: Finished difference Result 129 states and 138 transitions. [2021-12-22 00:05:27,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:05:27,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-22 00:05:27,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:27,819 INFO L225 Difference]: With dead ends: 129 [2021-12-22 00:05:27,819 INFO L226 Difference]: Without dead ends: 129 [2021-12-22 00:05:27,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:05:27,819 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 97 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:27,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 158 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:27,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-22 00:05:27,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 98. [2021-12-22 00:05:27,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 97 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:27,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2021-12-22 00:05:27,821 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 17 [2021-12-22 00:05:27,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:27,821 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2021-12-22 00:05:27,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:27,822 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2021-12-22 00:05:27,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 00:05:27,822 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:27,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:27,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:28,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:28,029 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:28,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:28,029 INFO L85 PathProgramCache]: Analyzing trace with hash -734113797, now seen corresponding path program 1 times [2021-12-22 00:05:28,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:28,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759894034] [2021-12-22 00:05:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:28,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:28,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:28,031 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:28,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-22 00:05:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:28,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-22 00:05:28,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:28,104 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:28,201 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:28,205 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:28,242 INFO L387 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 17 treesize of output 9 [2021-12-22 00:05:28,245 INFO L387 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 15 treesize of output 7 [2021-12-22 00:05:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:28,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:28,257 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:28,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759894034] [2021-12-22 00:05:28,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759894034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:28,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:28,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:05:28,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465251863] [2021-12-22 00:05:28,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:28,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:05:28,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:28,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:05:28,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:05:28,258 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:28,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:28,593 INFO L93 Difference]: Finished difference Result 201 states and 219 transitions. [2021-12-22 00:05:28,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:05:28,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-22 00:05:28,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:28,594 INFO L225 Difference]: With dead ends: 201 [2021-12-22 00:05:28,594 INFO L226 Difference]: Without dead ends: 201 [2021-12-22 00:05:28,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:05:28,595 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 148 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:28,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 221 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 00:05:28,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-22 00:05:28,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 106. [2021-12-22 00:05:28,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 105 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:28,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2021-12-22 00:05:28,597 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 17 [2021-12-22 00:05:28,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:28,597 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2021-12-22 00:05:28,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:28,597 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2021-12-22 00:05:28,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-22 00:05:28,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:28,597 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:28,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:28,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:28,805 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:28,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:28,805 INFO L85 PathProgramCache]: Analyzing trace with hash 50233868, now seen corresponding path program 1 times [2021-12-22 00:05:28,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:28,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733291572] [2021-12-22 00:05:28,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:28,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:28,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:28,820 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:28,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-22 00:05:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:28,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 00:05:28,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:28,933 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:28,952 INFO L353 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-22 00:05:28,952 INFO L387 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 17 treesize of output 24 [2021-12-22 00:05:28,973 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:05:29,055 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:05:29,056 INFO L387 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 [2021-12-22 00:05:29,096 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-12-22 00:05:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 00:05:29,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:05:29,182 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_261 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse0) v_ArrVal_261) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse0))) (_ bv1 1))) is different from false [2021-12-22 00:05:29,197 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:29,197 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2021-12-22 00:05:29,200 INFO L387 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 40 treesize of output 28 [2021-12-22 00:05:29,203 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:05:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-22 00:05:33,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:33,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733291572] [2021-12-22 00:05:33,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733291572] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:05:33,278 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 00:05:33,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-12-22 00:05:33,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404839030] [2021-12-22 00:05:33,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 00:05:33,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 00:05:33,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:33,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 00:05:33,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=95, Unknown=3, NotChecked=20, Total=156 [2021-12-22 00:05:33,279 INFO L87 Difference]: Start difference. First operand 106 states and 118 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:33,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:33,621 INFO L93 Difference]: Finished difference Result 154 states and 168 transitions. [2021-12-22 00:05:33,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:05:33,621 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-22 00:05:33,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:33,622 INFO L225 Difference]: With dead ends: 154 [2021-12-22 00:05:33,622 INFO L226 Difference]: Without dead ends: 154 [2021-12-22 00:05:33,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=46, Invalid=111, Unknown=3, NotChecked=22, Total=182 [2021-12-22 00:05:33,622 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 78 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 330 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:33,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 562 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 225 Invalid, 0 Unknown, 330 Unchecked, 0.3s Time] [2021-12-22 00:05:33,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-12-22 00:05:33,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 105. [2021-12-22 00:05:33,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 78 states have (on average 1.5) internal successors, (117), 104 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:33,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2021-12-22 00:05:33,624 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 18 [2021-12-22 00:05:33,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:33,624 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2021-12-22 00:05:33,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:33,625 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2021-12-22 00:05:33,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-22 00:05:33,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:33,625 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:33,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:33,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:33,831 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:33,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash 50233869, now seen corresponding path program 1 times [2021-12-22 00:05:33,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:33,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855282469] [2021-12-22 00:05:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:33,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:33,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:33,833 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:33,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-22 00:05:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:33,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-22 00:05:33,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:33,967 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:33,981 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:05:33,983 INFO L387 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 11 treesize of output 11 [2021-12-22 00:05:33,987 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:34,003 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:05:34,010 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:05:34,115 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:05:34,115 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-12-22 00:05:34,124 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-22 00:05:34,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-12-22 00:05:34,196 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-22 00:05:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:34,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:05:34,581 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse0) (_ bv8 32) (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_304) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse0))))) (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (.cse2 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|))) (bvule (bvadd .cse1 (_ bv4 32) .cse2) (bvadd .cse1 (_ bv8 32) .cse2))))) is different from false [2021-12-22 00:05:34,624 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse1 (let ((.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2) v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2)))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_304) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))))))) is different from false [2021-12-22 00:05:34,676 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_304) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)))))) (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3) v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3)))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))) is different from false [2021-12-22 00:05:34,694 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:34,694 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2021-12-22 00:05:34,710 INFO L387 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 54 treesize of output 36 [2021-12-22 00:05:34,715 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-12-22 00:05:34,743 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:34,744 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2021-12-22 00:05:34,753 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:34,753 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2021-12-22 00:05:34,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:05:34,761 INFO L387 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 33 treesize of output 21 [2021-12-22 00:05:34,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:05:34,765 INFO L387 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 24 treesize of output 12 [2021-12-22 00:05:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-22 00:05:34,847 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:34,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855282469] [2021-12-22 00:05:34,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855282469] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:05:34,847 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 00:05:34,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-12-22 00:05:34,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90818239] [2021-12-22 00:05:34,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 00:05:34,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-22 00:05:34,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:34,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-22 00:05:34,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=124, Unknown=3, NotChecked=72, Total=240 [2021-12-22 00:05:34,848 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:36,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:36,921 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2021-12-22 00:05:36,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 00:05:36,922 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-22 00:05:36,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:36,922 INFO L225 Difference]: With dead ends: 160 [2021-12-22 00:05:36,922 INFO L226 Difference]: Without dead ends: 160 [2021-12-22 00:05:36,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=92, Invalid=297, Unknown=3, NotChecked=114, Total=506 [2021-12-22 00:05:36,923 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 80 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:36,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 683 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 475 Invalid, 0 Unknown, 303 Unchecked, 1.4s Time] [2021-12-22 00:05:36,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-12-22 00:05:36,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 110. [2021-12-22 00:05:36,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 109 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2021-12-22 00:05:36,925 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 18 [2021-12-22 00:05:36,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:36,925 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2021-12-22 00:05:36,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:36,925 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2021-12-22 00:05:36,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-22 00:05:36,926 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:36,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:36,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:37,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:37,137 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:37,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:37,137 INFO L85 PathProgramCache]: Analyzing trace with hash -10622392, now seen corresponding path program 1 times [2021-12-22 00:05:37,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:37,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204207584] [2021-12-22 00:05:37,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:37,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:37,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:37,139 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:37,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-22 00:05:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:37,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 00:05:37,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:37,216 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:37,278 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:37,313 INFO L387 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 17 treesize of output 9 [2021-12-22 00:05:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:37,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:37,319 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:37,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204207584] [2021-12-22 00:05:37,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204207584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:37,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:37,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:05:37,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719804586] [2021-12-22 00:05:37,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:37,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:05:37,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:37,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:05:37,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:05:37,321 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:37,542 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2021-12-22 00:05:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:05:37,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-22 00:05:37,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:37,543 INFO L225 Difference]: With dead ends: 146 [2021-12-22 00:05:37,543 INFO L226 Difference]: Without dead ends: 146 [2021-12-22 00:05:37,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:05:37,544 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 133 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:37,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 160 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:37,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-22 00:05:37,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 110. [2021-12-22 00:05:37,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 83 states have (on average 1.4578313253012047) internal successors, (121), 109 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:37,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-12-22 00:05:37,547 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 20 [2021-12-22 00:05:37,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:37,547 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-12-22 00:05:37,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:37,547 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-12-22 00:05:37,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-22 00:05:37,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:37,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:37,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:37,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:37,755 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:37,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:37,755 INFO L85 PathProgramCache]: Analyzing trace with hash -10622391, now seen corresponding path program 1 times [2021-12-22 00:05:37,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:37,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589061057] [2021-12-22 00:05:37,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:37,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:37,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:37,757 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:37,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-22 00:05:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:37,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-22 00:05:37,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:37,837 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:37,925 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:37,929 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:37,978 INFO L387 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 15 treesize of output 7 [2021-12-22 00:05:37,980 INFO L387 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 17 treesize of output 9 [2021-12-22 00:05:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:37,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:37,993 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:37,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589061057] [2021-12-22 00:05:37,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589061057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:37,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:37,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:05:37,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811622676] [2021-12-22 00:05:37,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:37,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:05:37,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:37,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:05:37,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:05:37,994 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:38,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:38,326 INFO L93 Difference]: Finished difference Result 203 states and 220 transitions. [2021-12-22 00:05:38,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:05:38,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-22 00:05:38,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:38,328 INFO L225 Difference]: With dead ends: 203 [2021-12-22 00:05:38,328 INFO L226 Difference]: Without dead ends: 203 [2021-12-22 00:05:38,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:05:38,328 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 164 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:38,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 187 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 00:05:38,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-22 00:05:38,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 113. [2021-12-22 00:05:38,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 86 states have (on average 1.441860465116279) internal successors, (124), 112 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:38,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2021-12-22 00:05:38,331 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 20 [2021-12-22 00:05:38,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:38,331 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2021-12-22 00:05:38,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:38,331 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2021-12-22 00:05:38,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-22 00:05:38,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:38,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:38,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:38,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:38,539 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:38,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:38,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1375969503, now seen corresponding path program 1 times [2021-12-22 00:05:38,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:38,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797330654] [2021-12-22 00:05:38,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:38,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:38,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:38,541 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:38,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-22 00:05:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:38,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-22 00:05:38,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:38,630 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:38,646 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:05:38,646 INFO L387 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 11 treesize of output 11 [2021-12-22 00:05:38,755 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:38,763 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:38,801 INFO L387 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 19 treesize of output 18 [2021-12-22 00:05:38,805 INFO L387 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 23 treesize of output 22 [2021-12-22 00:05:38,901 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-22 00:05:38,901 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 36 [2021-12-22 00:05:38,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2021-12-22 00:05:38,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:38,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:38,933 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:38,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797330654] [2021-12-22 00:05:38,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797330654] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:38,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:38,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 00:05:38,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042539226] [2021-12-22 00:05:38,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:38,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 00:05:38,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:38,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 00:05:38,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-22 00:05:38,934 INFO L87 Difference]: Start difference. First operand 113 states and 124 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:39,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:39,652 INFO L93 Difference]: Finished difference Result 183 states and 193 transitions. [2021-12-22 00:05:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 00:05:39,652 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-22 00:05:39,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:39,653 INFO L225 Difference]: With dead ends: 183 [2021-12-22 00:05:39,653 INFO L226 Difference]: Without dead ends: 183 [2021-12-22 00:05:39,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-12-22 00:05:39,654 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 196 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:39,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 589 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 424 Invalid, 0 Unknown, 59 Unchecked, 0.5s Time] [2021-12-22 00:05:39,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-12-22 00:05:39,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 128. [2021-12-22 00:05:39,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 101 states have (on average 1.386138613861386) internal successors, (140), 127 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 140 transitions. [2021-12-22 00:05:39,657 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 140 transitions. Word has length 23 [2021-12-22 00:05:39,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:39,658 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 140 transitions. [2021-12-22 00:05:39,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:39,658 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 140 transitions. [2021-12-22 00:05:39,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-22 00:05:39,659 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:39,659 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:39,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-22 00:05:39,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:39,868 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:39,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:39,868 INFO L85 PathProgramCache]: Analyzing trace with hash 382685369, now seen corresponding path program 2 times [2021-12-22 00:05:39,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:39,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961144335] [2021-12-22 00:05:39,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 00:05:39,870 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:39,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:39,871 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:39,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-22 00:05:40,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 00:05:40,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:05:40,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-22 00:05:40,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:40,065 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:40,081 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:05:40,081 INFO L387 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 11 treesize of output 11 [2021-12-22 00:05:40,086 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:40,105 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:05:40,113 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:05:40,219 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:05:40,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-12-22 00:05:40,223 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-22 00:05:40,339 INFO L387 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 68 treesize of output 64 [2021-12-22 00:05:40,352 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:05:40,352 INFO L387 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 56 treesize of output 55 [2021-12-22 00:05:40,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-12-22 00:05:40,423 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-22 00:05:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:40,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:05:40,827 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|))) (let ((.cse4 (bvadd (_ bv4 32) .cse3 |c_ULTIMATE.start_create_data_#t~mem8#1.offset|))) (or (and (forall ((v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|)))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_446) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2)))))) (not (bvule (bvadd .cse3 |c_ULTIMATE.start_create_data_#t~mem8#1.offset|) .cse4)) (not (bvule .cse4 (select |c_#length| |c_ULTIMATE.start_create_data_#t~mem8#1.base|)))))) is different from false [2021-12-22 00:05:44,052 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:44,052 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 272 treesize of output 222 [2021-12-22 00:05:44,077 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:44,077 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 222 treesize of output 172 [2021-12-22 00:05:44,086 INFO L387 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 860 treesize of output 728 [2021-12-22 00:05:44,114 INFO L387 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 3140 treesize of output 2918 [2021-12-22 00:05:44,132 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2918 treesize of output 2774 [2021-12-22 00:05:44,145 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2774 treesize of output 2430 [2021-12-22 00:05:44,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2333 treesize of output 2141 [2021-12-22 00:05:44,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2141 treesize of output 1949 [2021-12-22 00:05:44,239 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1949 treesize of output 1885 [2021-12-22 00:05:44,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:44,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961144335] [2021-12-22 00:05:44,250 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-22 00:05:44,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [925110143] [2021-12-22 00:05:44,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 00:05:44,250 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-22 00:05:44,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-22 00:05:44,252 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-22 00:05:44,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-12-22 00:05:44,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 00:05:44,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:05:44,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-22 00:05:44,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:44,488 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:44,503 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:05:44,504 INFO L387 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 11 treesize of output 11 [2021-12-22 00:05:44,524 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:44,535 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:05:44,544 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:05:44,640 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:05:44,640 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-12-22 00:05:44,646 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-22 00:05:44,761 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:05:44,761 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-12-22 00:05:44,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-22 00:05:44,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-12-22 00:05:44,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-22 00:05:44,845 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:44,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:05:45,014 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_507 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_506) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_507) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse0))))) (forall ((v_ArrVal_506 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_506) |c_ULTIMATE.start_create_data_~data~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|)))) (bvule (bvadd (_ bv4 32) .cse1 .cse2) (bvadd (_ bv8 32) .cse1 .cse2))))) is different from false [2021-12-22 00:05:45,080 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_506 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse1 (let ((.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2) v_ArrVal_506) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2)))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_507 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_506) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_507) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))))))) is different from false [2021-12-22 00:05:45,209 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_507 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))) (bvule (bvadd (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_506) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_507) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)))))) (forall ((v_ArrVal_506 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse3 (let ((.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4) v_ArrVal_506) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4)))) (bvule (bvadd (_ bv8 32) .cse2 .cse3) (bvadd .cse2 .cse3 (_ bv12 32)))))) is different from false [2021-12-22 00:05:45,411 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_504 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse1 (let ((.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_505) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_504) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2) v_ArrVal_506) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2)))) (bvule (bvadd (_ bv8 32) .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_507 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_504 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_504)) (.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (bvule (bvadd (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_505) .cse3 v_ArrVal_506) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4) (_ bv12 32)) (select |c_#length| (select (select (store .cse5 .cse3 v_ArrVal_507) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))))))) is different from false [2021-12-22 00:05:45,542 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_507 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_504 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_504))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_505) .cse1 v_ArrVal_506) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2) (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_507) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_504 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (let ((.cse7 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (select (select (let ((.cse6 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (store (store |c_#memory_$Pointer$.offset| .cse6 v_ArrVal_505) (select (select (store |c_#memory_$Pointer$.base| .cse6 v_ArrVal_504) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7) v_ArrVal_506)) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (.cse5 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|))) (bvule (bvadd (_ bv8 32) .cse4 .cse5) (bvadd .cse4 .cse5 (_ bv12 32)))))) is different from false [2021-12-22 00:05:45,596 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_504 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2))) (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_505) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_504) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2) v_ArrVal_506)) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2)))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_507 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_504 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse6 (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_504))) (let ((.cse4 (select (select .cse6 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_505) .cse4 v_ArrVal_506) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse4 v_ArrVal_507) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))))))))) is different from false [2021-12-22 00:05:45,617 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:45,617 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 80 [2021-12-22 00:05:45,626 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:45,626 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 60 [2021-12-22 00:05:45,633 INFO L387 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 102 treesize of output 84 [2021-12-22 00:05:45,636 INFO L387 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 286 treesize of output 244 [2021-12-22 00:05:45,648 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 186 [2021-12-22 00:05:45,651 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 184 [2021-12-22 00:05:45,661 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 130 [2021-12-22 00:05:45,736 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:45,736 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 90 [2021-12-22 00:05:45,758 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:45,758 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 60 [2021-12-22 00:05:45,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:05:45,764 INFO L387 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 92 treesize of output 56 [2021-12-22 00:05:45,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:05:45,770 INFO L387 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 50 treesize of output 32 [2021-12-22 00:05:45,776 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-22 00:05:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2021-12-22 00:05:46,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [925110143] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:05:46,001 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 00:05:46,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-12-22 00:05:46,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848033933] [2021-12-22 00:05:46,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 00:05:46,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-22 00:05:46,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:46,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-22 00:05:46,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=319, Unknown=23, NotChecked=308, Total=756 [2021-12-22 00:05:46,002 INFO L87 Difference]: Start difference. First operand 128 states and 140 transitions. Second operand has 21 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:48,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:48,837 INFO L93 Difference]: Finished difference Result 171 states and 183 transitions. [2021-12-22 00:05:48,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 00:05:48,838 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-22 00:05:48,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:48,839 INFO L225 Difference]: With dead ends: 171 [2021-12-22 00:05:48,839 INFO L226 Difference]: Without dead ends: 171 [2021-12-22 00:05:48,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=190, Invalid=627, Unknown=23, NotChecked=420, Total=1260 [2021-12-22 00:05:48,840 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 80 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 628 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:48,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 736 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 530 Invalid, 0 Unknown, 628 Unchecked, 1.7s Time] [2021-12-22 00:05:48,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-12-22 00:05:48,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 133. [2021-12-22 00:05:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 106 states have (on average 1.3679245283018868) internal successors, (145), 132 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 145 transitions. [2021-12-22 00:05:48,842 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 145 transitions. Word has length 23 [2021-12-22 00:05:48,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:48,842 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 145 transitions. [2021-12-22 00:05:48,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:48,842 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 145 transitions. [2021-12-22 00:05:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-22 00:05:48,843 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:48,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:48,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:49,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:49,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:49,243 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:49,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:49,244 INFO L85 PathProgramCache]: Analyzing trace with hash -543267076, now seen corresponding path program 1 times [2021-12-22 00:05:49,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:49,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685835524] [2021-12-22 00:05:49,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:49,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:49,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:49,245 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:49,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-22 00:05:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:49,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 00:05:49,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:49,425 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:49,463 INFO L387 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 15 treesize of output 7 [2021-12-22 00:05:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:49,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:49,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:49,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685835524] [2021-12-22 00:05:49,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685835524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:49,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:49,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:05:49,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104882962] [2021-12-22 00:05:49,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:49,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:05:49,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:49,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:05:49,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:05:49,471 INFO L87 Difference]: Start difference. First operand 133 states and 145 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:49,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:49,675 INFO L93 Difference]: Finished difference Result 167 states and 178 transitions. [2021-12-22 00:05:49,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:05:49,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-12-22 00:05:49,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:49,676 INFO L225 Difference]: With dead ends: 167 [2021-12-22 00:05:49,676 INFO L226 Difference]: Without dead ends: 167 [2021-12-22 00:05:49,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:05:49,677 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 155 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:49,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 169 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:49,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-22 00:05:49,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 145. [2021-12-22 00:05:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 118 states have (on average 1.4406779661016949) internal successors, (170), 144 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 170 transitions. [2021-12-22 00:05:49,679 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 170 transitions. Word has length 25 [2021-12-22 00:05:49,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:49,679 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 170 transitions. [2021-12-22 00:05:49,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:49,679 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 170 transitions. [2021-12-22 00:05:49,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-22 00:05:49,680 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:49,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:49,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:49,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:49,880 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:49,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:49,881 INFO L85 PathProgramCache]: Analyzing trace with hash 338589996, now seen corresponding path program 1 times [2021-12-22 00:05:49,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:49,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97281613] [2021-12-22 00:05:49,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:49,881 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:49,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:49,882 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:49,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-22 00:05:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:49,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 00:05:49,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:50,087 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:50,169 INFO L387 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 23 treesize of output 11 [2021-12-22 00:05:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:50,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:50,190 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:50,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97281613] [2021-12-22 00:05:50,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97281613] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:50,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:50,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:05:50,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878728708] [2021-12-22 00:05:50,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:50,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:05:50,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:50,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:05:50,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:05:50,191 INFO L87 Difference]: Start difference. First operand 145 states and 170 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:50,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:50,561 INFO L93 Difference]: Finished difference Result 168 states and 179 transitions. [2021-12-22 00:05:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:05:50,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-22 00:05:50,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:50,563 INFO L225 Difference]: With dead ends: 168 [2021-12-22 00:05:50,563 INFO L226 Difference]: Without dead ends: 168 [2021-12-22 00:05:50,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:05:50,563 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 154 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:50,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 144 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 00:05:50,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-22 00:05:50,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 146. [2021-12-22 00:05:50,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 119 states have (on average 1.4369747899159664) internal successors, (171), 145 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:50,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2021-12-22 00:05:50,566 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 26 [2021-12-22 00:05:50,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:50,566 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2021-12-22 00:05:50,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:50,566 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2021-12-22 00:05:50,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 00:05:50,566 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:50,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:50,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:50,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:50,774 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:50,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:50,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1906355454, now seen corresponding path program 1 times [2021-12-22 00:05:50,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:50,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785329247] [2021-12-22 00:05:50,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:50,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:50,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:50,776 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) [2021-12-22 00:05:50,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-22 00:05:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:50,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 00:05:50,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:50,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:51,029 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:51,073 INFO L387 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 17 treesize of output 9 [2021-12-22 00:05:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:51,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:51,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:51,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785329247] [2021-12-22 00:05:51,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785329247] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:51,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:51,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:05:51,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082058655] [2021-12-22 00:05:51,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:51,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:05:51,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:51,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:05:51,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:05:51,089 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:51,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:51,414 INFO L93 Difference]: Finished difference Result 167 states and 183 transitions. [2021-12-22 00:05:51,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:05:51,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-22 00:05:51,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:51,415 INFO L225 Difference]: With dead ends: 167 [2021-12-22 00:05:51,415 INFO L226 Difference]: Without dead ends: 167 [2021-12-22 00:05:51,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:05:51,416 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 78 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:51,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 164 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 00:05:51,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-22 00:05:51,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 149. [2021-12-22 00:05:51,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 122 states have (on average 1.4262295081967213) internal successors, (174), 148 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:51,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2021-12-22 00:05:51,418 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 27 [2021-12-22 00:05:51,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:51,418 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2021-12-22 00:05:51,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:51,418 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2021-12-22 00:05:51,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 00:05:51,419 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:51,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:51,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:51,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:51,626 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:51,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:51,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2126823547, now seen corresponding path program 1 times [2021-12-22 00:05:51,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:51,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693056198] [2021-12-22 00:05:51,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:51,627 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:51,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:51,629 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) [2021-12-22 00:05:51,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-22 00:05:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:51,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-22 00:05:51,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:51,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:51,990 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:52,050 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:52,068 INFO L353 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-22 00:05:52,068 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2021-12-22 00:05:52,303 INFO L387 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 15 treesize of output 7 [2021-12-22 00:05:52,347 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:52,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2021-12-22 00:05:52,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:52,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:52,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:52,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693056198] [2021-12-22 00:05:52,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693056198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:52,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:52,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 00:05:52,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863375807] [2021-12-22 00:05:52,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:52,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 00:05:52,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:52,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 00:05:52,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-12-22 00:05:52,391 INFO L87 Difference]: Start difference. First operand 149 states and 174 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:53,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:53,047 INFO L93 Difference]: Finished difference Result 171 states and 188 transitions. [2021-12-22 00:05:53,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 00:05:53,048 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-22 00:05:53,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:53,049 INFO L225 Difference]: With dead ends: 171 [2021-12-22 00:05:53,049 INFO L226 Difference]: Without dead ends: 171 [2021-12-22 00:05:53,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2021-12-22 00:05:53,050 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 283 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:53,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 358 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 349 Invalid, 0 Unknown, 137 Unchecked, 0.4s Time] [2021-12-22 00:05:53,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-12-22 00:05:53,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 154. [2021-12-22 00:05:53,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 128 states have (on average 1.4140625) internal successors, (181), 153 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:53,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 181 transitions. [2021-12-22 00:05:53,053 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 181 transitions. Word has length 27 [2021-12-22 00:05:53,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:53,053 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 181 transitions. [2021-12-22 00:05:53,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:53,053 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 181 transitions. [2021-12-22 00:05:53,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 00:05:53,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:53,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:53,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:53,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:53,260 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:53,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:53,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2126823546, now seen corresponding path program 1 times [2021-12-22 00:05:53,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:53,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601709424] [2021-12-22 00:05:53,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:53,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:53,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:53,262 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) [2021-12-22 00:05:53,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-22 00:05:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:53,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-22 00:05:53,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:53,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:53,440 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:05:53,441 INFO L387 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 11 treesize of output 11 [2021-12-22 00:05:53,495 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:53,654 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:53,664 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:53,720 INFO L387 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 21 treesize of output 20 [2021-12-22 00:05:53,724 INFO L387 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 23 treesize of output 22 [2021-12-22 00:05:53,885 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-22 00:05:53,886 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 38 [2021-12-22 00:05:53,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2021-12-22 00:05:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:53,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:53,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:53,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601709424] [2021-12-22 00:05:53,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601709424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:53,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:53,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 00:05:53,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56592515] [2021-12-22 00:05:53,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:53,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 00:05:53,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:53,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 00:05:53,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-22 00:05:53,951 INFO L87 Difference]: Start difference. First operand 154 states and 181 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:55,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:55,171 INFO L93 Difference]: Finished difference Result 216 states and 242 transitions. [2021-12-22 00:05:55,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-22 00:05:55,172 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-22 00:05:55,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:55,173 INFO L225 Difference]: With dead ends: 216 [2021-12-22 00:05:55,173 INFO L226 Difference]: Without dead ends: 216 [2021-12-22 00:05:55,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2021-12-22 00:05:55,173 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 291 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:55,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 382 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 623 Invalid, 0 Unknown, 81 Unchecked, 0.8s Time] [2021-12-22 00:05:55,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-22 00:05:55,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 164. [2021-12-22 00:05:55,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 138 states have (on average 1.4202898550724639) internal successors, (196), 163 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:55,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 196 transitions. [2021-12-22 00:05:55,176 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 196 transitions. Word has length 27 [2021-12-22 00:05:55,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:55,176 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 196 transitions. [2021-12-22 00:05:55,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:55,176 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 196 transitions. [2021-12-22 00:05:55,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 00:05:55,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:55,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:55,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:55,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:55,385 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:55,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:55,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1032522897, now seen corresponding path program 1 times [2021-12-22 00:05:55,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:55,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17412607] [2021-12-22 00:05:55,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:55,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:55,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:55,387 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) [2021-12-22 00:05:55,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-22 00:05:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:55,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-22 00:05:55,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:55,651 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:55,657 INFO L387 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 11 treesize of output 7 [2021-12-22 00:05:55,741 INFO L387 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 15 treesize of output 7 [2021-12-22 00:05:55,883 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:05:55,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 18 [2021-12-22 00:05:55,918 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-22 00:05:55,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:55,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:55,927 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:55,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17412607] [2021-12-22 00:05:55,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17412607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:55,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:55,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 00:05:55,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425069393] [2021-12-22 00:05:55,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:55,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 00:05:55,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:55,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 00:05:55,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-22 00:05:55,928 INFO L87 Difference]: Start difference. First operand 164 states and 196 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:56,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:56,785 INFO L93 Difference]: Finished difference Result 188 states and 210 transitions. [2021-12-22 00:05:56,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 00:05:56,786 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-22 00:05:56,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:56,786 INFO L225 Difference]: With dead ends: 188 [2021-12-22 00:05:56,787 INFO L226 Difference]: Without dead ends: 188 [2021-12-22 00:05:56,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2021-12-22 00:05:56,787 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 478 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:56,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 291 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 00:05:56,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-12-22 00:05:56,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 165. [2021-12-22 00:05:56,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 139 states have (on average 1.4244604316546763) internal successors, (198), 164 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 198 transitions. [2021-12-22 00:05:56,790 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 198 transitions. Word has length 28 [2021-12-22 00:05:56,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:56,790 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 198 transitions. [2021-12-22 00:05:56,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:56,791 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 198 transitions. [2021-12-22 00:05:56,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 00:05:56,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:56,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:56,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:56,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:56,998 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:56,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:56,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1032522896, now seen corresponding path program 1 times [2021-12-22 00:05:56,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:56,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203483316] [2021-12-22 00:05:56,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:56,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:56,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:57,001 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) [2021-12-22 00:05:57,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-22 00:05:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:57,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 00:05:57,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:57,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:57,189 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:57,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203483316] [2021-12-22 00:05:57,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203483316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:57,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:57,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:05:57,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884325526] [2021-12-22 00:05:57,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:57,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:05:57,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:57,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:05:57,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:05:57,190 INFO L87 Difference]: Start difference. First operand 165 states and 198 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:57,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:57,291 INFO L93 Difference]: Finished difference Result 160 states and 190 transitions. [2021-12-22 00:05:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:05:57,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-22 00:05:57,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:57,294 INFO L225 Difference]: With dead ends: 160 [2021-12-22 00:05:57,294 INFO L226 Difference]: Without dead ends: 160 [2021-12-22 00:05:57,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:05:57,294 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 70 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:57,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 50 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:05:57,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-12-22 00:05:57,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-12-22 00:05:57,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 139 states have (on average 1.3669064748201438) internal successors, (190), 159 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:57,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2021-12-22 00:05:57,298 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 28 [2021-12-22 00:05:57,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:57,298 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2021-12-22 00:05:57,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:57,298 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2021-12-22 00:05:57,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 00:05:57,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:57,298 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:57,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:57,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:57,499 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-22 00:05:57,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:57,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1865364083, now seen corresponding path program 3 times [2021-12-22 00:05:57,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:57,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604276696] [2021-12-22 00:05:57,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 00:05:57,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:57,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:57,501 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:57,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-22 00:05:57,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-22 00:05:57,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:05:57,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-22 00:05:57,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:57,849 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:57,858 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:05:57,870 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:05:57,870 INFO L387 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 11 treesize of output 11 [2021-12-22 00:05:57,889 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:05:57,897 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:05:58,018 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:05:58,018 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-12-22 00:05:58,022 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-22 00:05:58,161 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:05:58,161 INFO L387 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 68 treesize of output 65 [2021-12-22 00:05:58,166 INFO L387 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 68 treesize of output 64 [2021-12-22 00:05:58,315 INFO L387 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 68 treesize of output 64 [2021-12-22 00:05:58,328 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:05:58,328 INFO L387 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 56 treesize of output 55 [2021-12-22 00:05:58,433 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-12-22 00:05:58,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-22 00:05:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:58,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:05:59,058 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|))) (let ((.cse1 (bvadd (_ bv4 32) .cse0 |c_ULTIMATE.start_create_data_#t~mem8#1.offset|))) (or (not (bvule (bvadd .cse0 |c_ULTIMATE.start_create_data_#t~mem8#1.offset|) .cse1)) (not (bvule .cse1 (select |c_#length| |c_ULTIMATE.start_create_data_#t~mem8#1.base|))) (and (forall ((v_ArrVal_814 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_814) |c_ULTIMATE.start_create_data_~data~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (.cse3 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|))) (bvule (bvadd .cse2 (_ bv4 32) .cse3) (bvadd .cse2 (_ bv8 32) .cse3)))) (forall ((v_ArrVal_814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_815 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_814) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4) (_ bv8 32) (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_815) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4)))))) (not (bvslt (bvadd |c_ULTIMATE.start_create_data_~counter~0#1| (_ bv1 32)) (_ bv20 32)))))) is different from false [2021-12-22 00:05:59,147 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse7 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse8 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse6))) (let ((.cse5 (bvadd (_ bv4 32) .cse7 .cse8))) (or (and (forall ((v_ArrVal_814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_815 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_814) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_815) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)))))) (forall ((v_ArrVal_814 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse3 (let ((.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4) v_ArrVal_814) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4)))) (bvule (bvadd (_ bv4 32) .cse2 .cse3) (bvadd (_ bv8 32) .cse2 .cse3))))) (not (bvule .cse5 (select |c_#length| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse6)))) (not (bvslt (bvadd |c_ULTIMATE.start_create_data_~counter~0#1| (_ bv1 32)) (_ bv20 32))) (not (bvule (bvadd .cse7 .cse8) .cse5)))))) is different from false [2021-12-22 00:05:59,265 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse2 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse3 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))) (let ((.cse0 (bvadd (_ bv8 32) .cse2 .cse3))) (or (not (bvslt (bvadd (_ bv2 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (_ bv20 32))) (not (bvule .cse0 (select |c_#length| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)))) (not (bvule (bvadd (_ bv4 32) .cse2 .cse3) .cse0)) (and (forall ((v_ArrVal_814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_815 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (bvule (bvadd (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (select (select (store |c_#memory_$Pointer$.offset| .cse4 v_ArrVal_814) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse4 v_ArrVal_815) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5)))))) (forall ((v_ArrVal_814 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse7 (let ((.cse8 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse8) v_ArrVal_814) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse8)))) (bvule (bvadd (_ bv8 32) .cse6 .cse7) (bvadd .cse6 .cse7 (_ bv12 32)))))))))) is different from false [2021-12-22 00:06:22,078 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:06:22,079 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 628 treesize of output 548 [2021-12-22 00:06:22,110 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:06:22,110 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 548 treesize of output 368 [2021-12-22 00:06:22,126 INFO L387 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 16140 treesize of output 13428 [2021-12-22 00:06:22,283 INFO L387 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 233676 treesize of output 227202 [2021-12-22 00:06:22,832 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 227202 treesize of output 218898 [2021-12-22 00:06:23,383 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 218898 treesize of output 201666 [2021-12-22 00:06:23,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 201666 treesize of output 197354 [2021-12-22 00:06:24,488 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 197354 treesize of output 169930 [2021-12-22 00:06:25,784 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 168485 treesize of output 152933 [2021-12-22 00:06:26,442 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152933 treesize of output 137381 [2021-12-22 00:06:27,155 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137381 treesize of output 136389 [2021-12-22 00:06:27,750 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:06:27,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604276696] [2021-12-22 00:06:27,751 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-22 00:06:27,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1510413327] [2021-12-22 00:06:27,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 00:06:27,752 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-22 00:06:27,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-22 00:06:27,753 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-22 00:06:27,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-12-22 00:06:28,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-22 00:06:28,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:06:28,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-22 00:06:28,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:28,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:06:28,577 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:06:28,578 INFO L387 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 11 treesize of output 11 [2021-12-22 00:06:28,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:06:28,597 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:06:28,604 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 00:06:28,676 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:06:28,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-12-22 00:06:28,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-22 00:06:28,878 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:06:28,878 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-12-22 00:06:28,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-22 00:06:29,072 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:06:29,072 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-12-22 00:06:29,078 INFO L387 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