./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-1.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/complex_data_creation_test02-1.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 1489855b7530896bdd176b2b4b6c40b97d8289986908954c704880efe20dffb0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 00:05:10,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 00:05:10,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 00:05:10,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 00:05:10,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 00:05:10,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 00:05:10,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 00:05:10,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 00:05:10,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 00:05:10,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 00:05:10,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 00:05:10,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 00:05:10,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 00:05:10,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 00:05:10,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 00:05:10,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 00:05:10,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 00:05:10,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 00:05:10,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 00:05:10,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 00:05:10,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 00:05:10,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 00:05:10,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 00:05:10,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 00:05:10,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 00:05:10,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 00:05:10,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 00:05:10,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 00:05:10,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 00:05:10,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 00:05:10,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 00:05:10,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 00:05:10,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 00:05:10,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 00:05:10,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 00:05:10,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 00:05:10,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 00:05:10,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 00:05:10,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 00:05:10,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 00:05:10,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 00:05:10,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-22 00:05:10,515 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 00:05:10,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 00:05:10,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 00:05:10,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 00:05:10,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 00:05:10,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 00:05:10,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 00:05:10,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 00:05:10,517 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 00:05:10,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 00:05:10,517 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 00:05:10,517 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 00:05:10,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 00:05:10,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 00:05:10,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 00:05:10,518 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 00:05:10,518 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 00:05:10,518 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 00:05:10,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 00:05:10,519 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 00:05:10,519 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 00:05:10,519 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 00:05:10,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 00:05:10,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 00:05:10,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 00:05:10,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:05:10,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 00:05:10,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 00:05:10,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 00:05:10,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 00:05:10,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 00:05:10,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1489855b7530896bdd176b2b4b6c40b97d8289986908954c704880efe20dffb0 [2021-12-22 00:05:10,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 00:05:10,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 00:05:10,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 00:05:10,703 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 00:05:10,704 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 00:05:10,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-1.i [2021-12-22 00:05:10,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/534050078/de2a0c8a09674a409c79499bc33ccffd/FLAG04f26e6a5 [2021-12-22 00:05:11,201 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 00:05:11,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-1.i [2021-12-22 00:05:11,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/534050078/de2a0c8a09674a409c79499bc33ccffd/FLAG04f26e6a5 [2021-12-22 00:05:11,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/534050078/de2a0c8a09674a409c79499bc33ccffd [2021-12-22 00:05:11,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 00:05:11,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 00:05:11,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 00:05:11,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 00:05:11,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 00:05:11,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:05:11" (1/1) ... [2021-12-22 00:05:11,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55ff8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:11, skipping insertion in model container [2021-12-22 00:05:11,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:05:11" (1/1) ... [2021-12-22 00:05:11,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 00:05:11,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:05:11,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:05:11,437 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 00:05:11,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7a5854ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:11, skipping insertion in model container [2021-12-22 00:05:11,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 00:05:11,438 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-22 00:05:11,439 INFO L158 Benchmark]: Toolchain (without parser) took 217.86ms. Allocated memory is still 119.5MB. Free memory was 89.7MB in the beginning and 91.5MB in the end (delta: -1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 00:05:11,440 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 83.9MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 00:05:11,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.76ms. Allocated memory is still 119.5MB. Free memory was 89.5MB in the beginning and 91.5MB in the end (delta: -1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 00:05:11,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 83.9MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.76ms. Allocated memory is still 119.5MB. Free memory was 89.5MB in the beginning and 91.5MB in the end (delta: -1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 556]: 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/complex_data_creation_test02-1.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 1489855b7530896bdd176b2b4b6c40b97d8289986908954c704880efe20dffb0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 00:05:12,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 00:05:12,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 00:05:12,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 00:05:12,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 00:05:12,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 00:05:12,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 00:05:12,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 00:05:12,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 00:05:12,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 00:05:12,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 00:05:12,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 00:05:12,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 00:05:12,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 00:05:12,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 00:05:12,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 00:05:12,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 00:05:12,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 00:05:12,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 00:05:12,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 00:05:12,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 00:05:12,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 00:05:12,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 00:05:12,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 00:05:12,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 00:05:12,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 00:05:12,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 00:05:12,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 00:05:12,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 00:05:12,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 00:05:12,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 00:05:12,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 00:05:12,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 00:05:12,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 00:05:12,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 00:05:12,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 00:05:12,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 00:05:12,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 00:05:12,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 00:05:12,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 00:05:12,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 00:05:12,841 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-22 00:05:12,870 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 00:05:12,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 00:05:12,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 00:05:12,873 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 00:05:12,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 00:05:12,873 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 00:05:12,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 00:05:12,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 00:05:12,875 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 00:05:12,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 00:05:12,876 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 00:05:12,876 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 00:05:12,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 00:05:12,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 00:05:12,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 00:05:12,876 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 00:05:12,876 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 00:05:12,877 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 00:05:12,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 00:05:12,877 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 00:05:12,877 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 00:05:12,877 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 00:05:12,878 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 00:05:12,878 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 00:05:12,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 00:05:12,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 00:05:12,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 00:05:12,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:05:12,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 00:05:12,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 00:05:12,886 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 00:05:12,886 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 00:05:12,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 00:05:12,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 00:05:12,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1489855b7530896bdd176b2b4b6c40b97d8289986908954c704880efe20dffb0 [2021-12-22 00:05:13,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 00:05:13,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 00:05:13,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 00:05:13,157 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 00:05:13,158 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 00:05:13,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-1.i [2021-12-22 00:05:13,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d8829b38/0ea7c42674d74ab68cd45a602e075b59/FLAGd246fdf17 [2021-12-22 00:05:13,612 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 00:05:13,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-1.i [2021-12-22 00:05:13,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d8829b38/0ea7c42674d74ab68cd45a602e075b59/FLAGd246fdf17 [2021-12-22 00:05:13,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d8829b38/0ea7c42674d74ab68cd45a602e075b59 [2021-12-22 00:05:13,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 00:05:13,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 00:05:13,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 00:05:13,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 00:05:13,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 00:05:13,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:05:13" (1/1) ... [2021-12-22 00:05:13,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2ba225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:13, skipping insertion in model container [2021-12-22 00:05:13,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:05:13" (1/1) ... [2021-12-22 00:05:13,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 00:05:13,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:05:13,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:05:13,909 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-22 00:05:13,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:05:13,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:05:13,963 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 00:05:13,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:05:14,019 INFO L208 MainTranslator]: Completed translation [2021-12-22 00:05:14,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:14 WrapperNode [2021-12-22 00:05:14,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 00:05:14,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 00:05:14,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 00:05:14,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 00:05:14,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:14" (1/1) ... [2021-12-22 00:05:14,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:14" (1/1) ... [2021-12-22 00:05:14,061 INFO L137 Inliner]: procedures = 129, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2021-12-22 00:05:14,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 00:05:14,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 00:05:14,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 00:05:14,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 00:05:14,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:14" (1/1) ... [2021-12-22 00:05:14,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:14" (1/1) ... [2021-12-22 00:05:14,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:14" (1/1) ... [2021-12-22 00:05:14,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:14" (1/1) ... [2021-12-22 00:05:14,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:14" (1/1) ... [2021-12-22 00:05:14,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:14" (1/1) ... [2021-12-22 00:05:14,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:14" (1/1) ... [2021-12-22 00:05:14,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 00:05:14,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 00:05:14,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 00:05:14,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 00:05:14,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:14" (1/1) ... [2021-12-22 00:05:14,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:05:14,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:05:14,117 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 00:05:14,128 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 00:05:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-22 00:05:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 00:05:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure create_data [2021-12-22 00:05:14,148 INFO L138 BoogieDeclarations]: Found implementation of procedure create_data [2021-12-22 00:05:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 00:05:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 00:05:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 00:05:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 00:05:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 00:05:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-22 00:05:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 00:05:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 00:05:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 00:05:14,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 00:05:14,221 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 00:05:14,223 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 00:05:14,907 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 00:05:14,912 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 00:05:14,913 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-22 00:05:14,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:05:14 BoogieIcfgContainer [2021-12-22 00:05:14,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 00:05:14,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 00:05:14,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 00:05:14,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 00:05:14,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:05:13" (1/3) ... [2021-12-22 00:05:14,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149203d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:05:14, skipping insertion in model container [2021-12-22 00:05:14,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:05:14" (2/3) ... [2021-12-22 00:05:14,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149203d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:05:14, skipping insertion in model container [2021-12-22 00:05:14,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:05:14" (3/3) ... [2021-12-22 00:05:14,924 INFO L111 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test02-1.i [2021-12-22 00:05:14,930 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 00:05:14,930 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2021-12-22 00:05:14,957 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 00:05:14,961 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 00:05:14,961 INFO L340 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2021-12-22 00:05:14,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 94 states have (on average 2.148936170212766) internal successors, (202), 186 states have internal predecessors, (202), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:14,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-22 00:05:14,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:14,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-22 00:05:14,977 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:14,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:14,980 INFO L85 PathProgramCache]: Analyzing trace with hash 5083689, now seen corresponding path program 1 times [2021-12-22 00:05:14,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:14,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207152096] [2021-12-22 00:05:14,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:14,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:14,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:14,991 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 00:05:14,992 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 00:05:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:15,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 00:05:15,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:15,072 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 00:05:15,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:15,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:15,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207152096] [2021-12-22 00:05:15,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207152096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:15,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:15,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:05:15,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268457697] [2021-12-22 00:05:15,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:15,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 00:05:15,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:15,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 00:05:15,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 00:05:15,106 INFO L87 Difference]: Start difference. First operand has 190 states, 94 states have (on average 2.148936170212766) internal successors, (202), 186 states have internal predecessors, (202), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 00:05:15,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:15,137 INFO L93 Difference]: Finished difference Result 190 states and 201 transitions. [2021-12-22 00:05:15,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 00:05:15,139 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 00:05:15,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:15,151 INFO L225 Difference]: With dead ends: 190 [2021-12-22 00:05:15,152 INFO L226 Difference]: Without dead ends: 188 [2021-12-22 00:05:15,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 00:05:15,156 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:15,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:05:15,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-12-22 00:05:15,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-12-22 00:05:15,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 93 states have (on average 2.096774193548387) internal successors, (195), 184 states have internal predecessors, (195), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:15,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 199 transitions. [2021-12-22 00:05:15,206 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 199 transitions. Word has length 4 [2021-12-22 00:05:15,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:15,206 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 199 transitions. [2021-12-22 00:05:15,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 00:05:15,208 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 199 transitions. [2021-12-22 00:05:15,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-22 00:05:15,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:15,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-22 00:05:15,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:15,416 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 00:05:15,416 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:15,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:15,417 INFO L85 PathProgramCache]: Analyzing trace with hash 5081478, now seen corresponding path program 1 times [2021-12-22 00:05:15,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:15,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804118531] [2021-12-22 00:05:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:15,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:15,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:15,420 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 00:05:15,451 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 00:05:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:15,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 00:05:15,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:15,550 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 00:05:15,555 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 00:05:15,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:05:15,614 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 00:05:15,636 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:05:15,640 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 00:05:15,653 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 00:05:15,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:15,654 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:15,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804118531] [2021-12-22 00:05:15,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804118531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:15,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:15,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:05:15,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006614204] [2021-12-22 00:05:15,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:15,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:05:15,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:15,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:05:15,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:05:15,660 INFO L87 Difference]: Start difference. First operand 188 states and 199 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 00:05:16,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:16,169 INFO L93 Difference]: Finished difference Result 206 states and 220 transitions. [2021-12-22 00:05:16,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 00:05:16,171 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 00:05:16,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:16,173 INFO L225 Difference]: With dead ends: 206 [2021-12-22 00:05:16,173 INFO L226 Difference]: Without dead ends: 206 [2021-12-22 00:05:16,173 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 00:05:16,174 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 32 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:16,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 355 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 00:05:16,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-12-22 00:05:16,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 193. [2021-12-22 00:05:16,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 98 states have (on average 2.0816326530612246) internal successors, (204), 189 states have internal predecessors, (204), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:16,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 208 transitions. [2021-12-22 00:05:16,182 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 208 transitions. Word has length 4 [2021-12-22 00:05:16,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:16,182 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 208 transitions. [2021-12-22 00:05:16,182 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 00:05:16,182 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 208 transitions. [2021-12-22 00:05:16,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-22 00:05:16,182 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:16,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-22 00:05:16,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:16,389 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 00:05:16,389 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:16,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:16,390 INFO L85 PathProgramCache]: Analyzing trace with hash 5081477, now seen corresponding path program 1 times [2021-12-22 00:05:16,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:16,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201267258] [2021-12-22 00:05:16,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:16,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:16,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:16,392 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 00:05:16,393 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 00:05:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:16,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 00:05:16,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:16,441 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 00:05:16,462 INFO L353 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-22 00:05:16,463 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 00:05:16,479 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 00:05:16,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:16,480 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:16,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201267258] [2021-12-22 00:05:16,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201267258] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:16,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:16,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:05:16,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017323757] [2021-12-22 00:05:16,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:16,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:05:16,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:16,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:05:16,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:05:16,482 INFO L87 Difference]: Start difference. First operand 193 states and 208 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 00:05:16,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:16,818 INFO L93 Difference]: Finished difference Result 212 states and 226 transitions. [2021-12-22 00:05:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:05:16,818 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 00:05:16,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:16,819 INFO L225 Difference]: With dead ends: 212 [2021-12-22 00:05:16,819 INFO L226 Difference]: Without dead ends: 212 [2021-12-22 00:05:16,819 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 00:05:16,820 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 149 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:16,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 290 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 00:05:16,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-12-22 00:05:16,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 187. [2021-12-22 00:05:16,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 98 states have (on average 2.0) internal successors, (196), 183 states have internal predecessors, (196), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:16,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 200 transitions. [2021-12-22 00:05:16,827 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 200 transitions. Word has length 4 [2021-12-22 00:05:16,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:16,827 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 200 transitions. [2021-12-22 00:05:16,827 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 00:05:16,827 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 200 transitions. [2021-12-22 00:05:16,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 00:05:16,827 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:16,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 00:05:16,835 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 00:05:17,035 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 00:05:17,036 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:17,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:17,037 INFO L85 PathProgramCache]: Analyzing trace with hash 157525902, now seen corresponding path program 1 times [2021-12-22 00:05:17,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:17,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952645294] [2021-12-22 00:05:17,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:17,038 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:17,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:17,039 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 00:05:17,040 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 00:05:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:17,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 00:05:17,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:17,095 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 00:05:17,100 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 00:05:17,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:17,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:17,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952645294] [2021-12-22 00:05:17,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952645294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:17,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:17,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:05:17,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125541720] [2021-12-22 00:05:17,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:17,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:05:17,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:17,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:05:17,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:05:17,102 INFO L87 Difference]: Start difference. First operand 187 states and 200 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 00:05:17,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:17,330 INFO L93 Difference]: Finished difference Result 210 states and 223 transitions. [2021-12-22 00:05:17,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:05:17,330 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 00:05:17,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:17,331 INFO L225 Difference]: With dead ends: 210 [2021-12-22 00:05:17,331 INFO L226 Difference]: Without dead ends: 210 [2021-12-22 00:05:17,331 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 00:05:17,332 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 64 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:17,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 234 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:17,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-12-22 00:05:17,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 185. [2021-12-22 00:05:17,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 98 states have (on average 1.969387755102041) internal successors, (193), 181 states have internal predecessors, (193), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:17,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 197 transitions. [2021-12-22 00:05:17,339 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 197 transitions. Word has length 5 [2021-12-22 00:05:17,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:17,339 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 197 transitions. [2021-12-22 00:05:17,339 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 00:05:17,340 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 197 transitions. [2021-12-22 00:05:17,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 00:05:17,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:17,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 00:05:17,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:17,546 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 00:05:17,546 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:17,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:17,547 INFO L85 PathProgramCache]: Analyzing trace with hash 157525903, now seen corresponding path program 1 times [2021-12-22 00:05:17,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:17,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746567543] [2021-12-22 00:05:17,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:17,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:17,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:17,548 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 00:05:17,549 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 00:05:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:17,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 00:05:17,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:17,604 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 00:05:17,615 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 00:05:17,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:17,615 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:17,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746567543] [2021-12-22 00:05:17,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746567543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:17,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:17,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:05:17,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982589942] [2021-12-22 00:05:17,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:17,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:05:17,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:17,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:05:17,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:05:17,617 INFO L87 Difference]: Start difference. First operand 185 states and 197 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 00:05:17,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:17,861 INFO L93 Difference]: Finished difference Result 183 states and 194 transitions. [2021-12-22 00:05:17,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:05:17,861 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 00:05:17,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:17,862 INFO L225 Difference]: With dead ends: 183 [2021-12-22 00:05:17,862 INFO L226 Difference]: Without dead ends: 183 [2021-12-22 00:05:17,862 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 00:05:17,863 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 11 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:17,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 275 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:17,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-12-22 00:05:17,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-12-22 00:05:17,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 98 states have (on average 1.9387755102040816) internal successors, (190), 179 states have internal predecessors, (190), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:17,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 194 transitions. [2021-12-22 00:05:17,867 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 194 transitions. Word has length 5 [2021-12-22 00:05:17,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:17,868 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 194 transitions. [2021-12-22 00:05:17,868 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 00:05:17,868 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 194 transitions. [2021-12-22 00:05:17,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-22 00:05:17,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:17,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:17,881 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 00:05:18,071 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 00:05:18,072 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:18,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:18,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1322502935, now seen corresponding path program 1 times [2021-12-22 00:05:18,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:18,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804279073] [2021-12-22 00:05:18,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:18,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:18,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:18,073 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 00:05:18,074 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 00:05:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:18,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-22 00:05:18,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:18,139 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 00:05:18,177 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:05:18,178 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 00:05:18,234 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 14 treesize of output 16 [2021-12-22 00:05:18,242 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 14 treesize of output 16 [2021-12-22 00:05:18,266 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 00:05:18,269 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 00:05:18,283 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 00:05:18,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:18,283 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:18,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804279073] [2021-12-22 00:05:18,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804279073] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:18,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:18,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 00:05:18,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092408027] [2021-12-22 00:05:18,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:18,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:05:18,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:18,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:05:18,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:05:18,285 INFO L87 Difference]: Start difference. First operand 183 states and 194 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:18,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:18,619 INFO L93 Difference]: Finished difference Result 185 states and 197 transitions. [2021-12-22 00:05:18,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:05:18,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-22 00:05:18,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:18,621 INFO L225 Difference]: With dead ends: 185 [2021-12-22 00:05:18,621 INFO L226 Difference]: Without dead ends: 185 [2021-12-22 00:05:18,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:05:18,622 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 5 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:18,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 610 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 00:05:18,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-22 00:05:18,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2021-12-22 00:05:18,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 99 states have (on average 1.9292929292929293) internal successors, (191), 180 states have internal predecessors, (191), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 195 transitions. [2021-12-22 00:05:18,627 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 195 transitions. Word has length 10 [2021-12-22 00:05:18,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:18,627 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 195 transitions. [2021-12-22 00:05:18,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:18,627 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 195 transitions. [2021-12-22 00:05:18,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-22 00:05:18,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:18,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:18,634 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 00:05:18,834 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 00:05:18,834 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting create_dataErr0REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:18,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:18,835 INFO L85 PathProgramCache]: Analyzing trace with hash -388286564, now seen corresponding path program 1 times [2021-12-22 00:05:18,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:18,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221077481] [2021-12-22 00:05:18,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:18,835 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:18,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:18,839 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 00:05:18,840 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 00:05:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:18,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 00:05:18,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:18,955 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 00:05:18,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:18,955 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:18,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221077481] [2021-12-22 00:05:18,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221077481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:18,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:18,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:05:18,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329236789] [2021-12-22 00:05:18,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:18,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:05:18,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:18,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:05:18,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:05:18,956 INFO L87 Difference]: Start difference. First operand 184 states and 195 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:18,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:18,979 INFO L93 Difference]: Finished difference Result 262 states and 277 transitions. [2021-12-22 00:05:18,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:05:18,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-22 00:05:18,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:18,980 INFO L225 Difference]: With dead ends: 262 [2021-12-22 00:05:18,980 INFO L226 Difference]: Without dead ends: 262 [2021-12-22 00:05:18,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:05:18,981 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 81 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:18,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 551 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:05:18,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-22 00:05:18,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 226. [2021-12-22 00:05:18,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 140 states have (on average 1.95) internal successors, (273), 221 states have internal predecessors, (273), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:18,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 277 transitions. [2021-12-22 00:05:18,985 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 277 transitions. Word has length 12 [2021-12-22 00:05:18,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:18,985 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 277 transitions. [2021-12-22 00:05:18,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 277 transitions. [2021-12-22 00:05:18,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 00:05:18,986 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:18,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:18,995 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 00:05:19,186 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 00:05:19,187 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting create_dataErr4REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:19,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:19,187 INFO L85 PathProgramCache]: Analyzing trace with hash 848024593, now seen corresponding path program 1 times [2021-12-22 00:05:19,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:19,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944117434] [2021-12-22 00:05:19,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:19,188 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:19,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:19,188 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 00:05:19,189 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 00:05:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:19,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 00:05:19,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:19,280 INFO L353 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-22 00:05:19,281 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-12-22 00:05:19,300 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 00:05:19,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:19,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:19,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944117434] [2021-12-22 00:05:19,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944117434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:19,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:19,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:05:19,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13302071] [2021-12-22 00:05:19,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:19,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:05:19,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:19,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:05:19,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:05:19,302 INFO L87 Difference]: Start difference. First operand 226 states and 277 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:19,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:19,549 INFO L93 Difference]: Finished difference Result 229 states and 273 transitions. [2021-12-22 00:05:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:05:19,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-22 00:05:19,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:19,550 INFO L225 Difference]: With dead ends: 229 [2021-12-22 00:05:19,550 INFO L226 Difference]: Without dead ends: 229 [2021-12-22 00:05:19,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:05:19,551 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 63 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:19,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 204 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:19,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-22 00:05:19,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 220. [2021-12-22 00:05:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 146 states have (on average 1.8013698630136987) internal successors, (263), 215 states have internal predecessors, (263), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:19,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 267 transitions. [2021-12-22 00:05:19,555 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 267 transitions. Word has length 13 [2021-12-22 00:05:19,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:19,556 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 267 transitions. [2021-12-22 00:05:19,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:19,556 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 267 transitions. [2021-12-22 00:05:19,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 00:05:19,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:19,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:19,565 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 00:05:19,758 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 00:05:19,758 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting create_dataErr5REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:19,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:19,758 INFO L85 PathProgramCache]: Analyzing trace with hash 848024594, now seen corresponding path program 1 times [2021-12-22 00:05:19,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:19,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023654064] [2021-12-22 00:05:19,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:19,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:19,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:19,776 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 00:05:19,777 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 00:05:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:19,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 00:05:19,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:19,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:05:19,882 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 9 treesize of output 11 [2021-12-22 00:05:19,893 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 11 treesize of output 9 [2021-12-22 00:05:19,901 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 00:05:19,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:19,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:19,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023654064] [2021-12-22 00:05:19,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023654064] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:19,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:19,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:05:19,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145515074] [2021-12-22 00:05:19,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:19,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:05:19,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:19,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:05:19,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:05:19,903 INFO L87 Difference]: Start difference. First operand 220 states and 267 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:20,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:20,162 INFO L93 Difference]: Finished difference Result 241 states and 281 transitions. [2021-12-22 00:05:20,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:05:20,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-22 00:05:20,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:20,164 INFO L225 Difference]: With dead ends: 241 [2021-12-22 00:05:20,164 INFO L226 Difference]: Without dead ends: 241 [2021-12-22 00:05:20,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:05:20,165 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 50 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:20,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 214 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:20,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-12-22 00:05:20,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 221. [2021-12-22 00:05:20,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 156 states have (on average 1.6474358974358974) internal successors, (257), 216 states have internal predecessors, (257), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 261 transitions. [2021-12-22 00:05:20,169 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 261 transitions. Word has length 13 [2021-12-22 00:05:20,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:20,169 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 261 transitions. [2021-12-22 00:05:20,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:20,170 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 261 transitions. [2021-12-22 00:05:20,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 00:05:20,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:20,170 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 00:05:20,177 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 00:05:20,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:20,377 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting create_dataErr8REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:20,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:20,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1586642756, now seen corresponding path program 1 times [2021-12-22 00:05:20,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:20,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336656102] [2021-12-22 00:05:20,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:20,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:20,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:20,379 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:20,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-22 00:05:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:20,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 00:05:20,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:20,473 INFO L353 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-22 00:05:20,473 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-12-22 00:05:20,497 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 00:05:20,548 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 24 treesize of output 12 [2021-12-22 00:05:20,556 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 00:05:20,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:20,557 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:20,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336656102] [2021-12-22 00:05:20,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336656102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:20,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:20,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:05:20,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513649211] [2021-12-22 00:05:20,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:20,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:05:20,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:20,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:05:20,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:05:20,558 INFO L87 Difference]: Start difference. First operand 221 states and 261 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:20,973 INFO L93 Difference]: Finished difference Result 274 states and 327 transitions. [2021-12-22 00:05:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:05:20,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-22 00:05:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:20,975 INFO L225 Difference]: With dead ends: 274 [2021-12-22 00:05:20,975 INFO L226 Difference]: Without dead ends: 274 [2021-12-22 00:05:20,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 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 00:05:20,976 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 26 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:20,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 417 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 00:05:20,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-12-22 00:05:20,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 227. [2021-12-22 00:05:20,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 162 states have (on average 1.6481481481481481) internal successors, (267), 222 states have internal predecessors, (267), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 271 transitions. [2021-12-22 00:05:20,981 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 271 transitions. Word has length 17 [2021-12-22 00:05:20,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:20,981 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 271 transitions. [2021-12-22 00:05:20,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 271 transitions. [2021-12-22 00:05:20,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 00:05:20,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:20,982 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 00:05:20,988 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 00:05:21,188 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 00:05:21,188 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting create_dataErr9REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:21,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:21,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1586642755, now seen corresponding path program 1 times [2021-12-22 00:05:21,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:21,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775960106] [2021-12-22 00:05:21,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:21,189 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:21,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:21,190 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 00:05:21,191 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 00:05:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:21,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-22 00:05:21,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:21,283 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 00:05:21,284 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-22 00:05:21,302 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 00:05:21,308 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 00:05:21,358 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 00:05:21,361 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 00:05:21,374 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 00:05:21,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:21,375 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:21,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775960106] [2021-12-22 00:05:21,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775960106] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:21,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:21,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:05:21,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111257587] [2021-12-22 00:05:21,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:21,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:05:21,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:21,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:05:21,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:05:21,376 INFO L87 Difference]: Start difference. First operand 227 states and 271 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:21,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:21,859 INFO L93 Difference]: Finished difference Result 229 states and 269 transitions. [2021-12-22 00:05:21,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:05:21,859 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-22 00:05:21,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:21,860 INFO L225 Difference]: With dead ends: 229 [2021-12-22 00:05:21,860 INFO L226 Difference]: Without dead ends: 229 [2021-12-22 00:05:21,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 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 00:05:21,861 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 5 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:21,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 428 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 00:05:21,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-22 00:05:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2021-12-22 00:05:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 162 states have (on average 1.623456790123457) internal successors, (263), 222 states have internal predecessors, (263), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:21,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 267 transitions. [2021-12-22 00:05:21,865 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 267 transitions. Word has length 17 [2021-12-22 00:05:21,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:21,865 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 267 transitions. [2021-12-22 00:05:21,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:21,865 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 267 transitions. [2021-12-22 00:05:21,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 00:05:21,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:21,866 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:21,874 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 00:05:22,074 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 00:05:22,074 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting create_dataErr8REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:22,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:22,075 INFO L85 PathProgramCache]: Analyzing trace with hash 509612229, now seen corresponding path program 1 times [2021-12-22 00:05:22,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:22,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503866166] [2021-12-22 00:05:22,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:22,075 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:22,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:22,076 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 00:05:22,077 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 00:05:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:22,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 00:05:22,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:22,217 INFO L353 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-22 00:05:22,217 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 20 treesize of output 22 [2021-12-22 00:05:22,240 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 00:05:22,314 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:05:22,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-12-22 00:05:22,345 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 34 treesize of output 16 [2021-12-22 00:05:22,353 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 00:05:22,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:05:22,430 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_178 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse0) v_ArrVal_178) c_create_data_~data~0.base) .cse0)))) (_ bv1 1)))) is different from false [2021-12-22 00:05:22,446 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:22,447 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 27 treesize of output 28 [2021-12-22 00:05:22,457 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 46 treesize of output 34 [2021-12-22 00:05:22,461 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 16 treesize of output 12 [2021-12-22 00:05:22,504 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 00:05:22,504 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:22,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503866166] [2021-12-22 00:05:22,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503866166] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:05:22,504 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 00:05:22,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2021-12-22 00:05:22,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642409212] [2021-12-22 00:05:22,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 00:05:22,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 00:05:22,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:22,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 00:05:22,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=4, NotChecked=14, Total=90 [2021-12-22 00:05:22,506 INFO L87 Difference]: Start difference. First operand 227 states and 267 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:23,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:23,026 INFO L93 Difference]: Finished difference Result 234 states and 271 transitions. [2021-12-22 00:05:23,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:05:23,027 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-22 00:05:23,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:23,027 INFO L225 Difference]: With dead ends: 234 [2021-12-22 00:05:23,027 INFO L226 Difference]: Without dead ends: 234 [2021-12-22 00:05:23,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=60, Unknown=5, NotChecked=16, Total=110 [2021-12-22 00:05:23,028 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 28 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:23,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 701 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 314 Invalid, 0 Unknown, 274 Unchecked, 0.5s Time] [2021-12-22 00:05:23,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-12-22 00:05:23,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 226. [2021-12-22 00:05:23,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 162 states have (on average 1.6111111111111112) internal successors, (261), 221 states have internal predecessors, (261), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:23,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 265 transitions. [2021-12-22 00:05:23,032 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 265 transitions. Word has length 22 [2021-12-22 00:05:23,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:23,032 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 265 transitions. [2021-12-22 00:05:23,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:23,032 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 265 transitions. [2021-12-22 00:05:23,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 00:05:23,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:23,033 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:23,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-22 00:05:23,233 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 00:05:23,234 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting create_dataErr9REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:23,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:23,234 INFO L85 PathProgramCache]: Analyzing trace with hash 509612230, now seen corresponding path program 1 times [2021-12-22 00:05:23,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:23,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285797767] [2021-12-22 00:05:23,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:23,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:23,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:23,235 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 00:05:23,236 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 00:05:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:23,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-22 00:05:23,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:23,371 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 11 treesize of output 9 [2021-12-22 00:05:23,378 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 9 treesize of output 11 [2021-12-22 00:05:23,395 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 00:05:23,410 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 00:05:23,514 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:05:23,514 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 00:05:23,519 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 00:05:23,597 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 00:05:23,602 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 00:05:23,623 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 00:05:23,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:05:23,958 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_222 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_222) c_create_data_~data~0.base) (bvadd (_ bv4 32) c_create_data_~data~0.offset)))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_222 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (bvule (bvadd (_ bv8 32) (bvmul c_create_data_~counter~0 (_ bv4 32)) (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_222) c_create_data_~data~0.base) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_223) c_create_data_~data~0.base) .cse2)))))) is different from false [2021-12-22 00:05:24,005 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_222 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2) v_ArrVal_222) c_create_data_~data~0.base) .cse2))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_222 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_222) c_create_data_~data~0.base) .cse4) (bvmul c_create_data_~counter~0 (_ bv4 32))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_223) c_create_data_~data~0.base) .cse4))))))) is different from false [2021-12-22 00:05:24,067 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_222 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1) v_ArrVal_222) c_create_data_~data~0.base) .cse1)))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_222 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_222) c_create_data_~data~0.base) .cse3)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_223) c_create_data_~data~0.base) .cse3))))))) is different from false [2021-12-22 00:05:24,081 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:24,081 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 46 [2021-12-22 00:05:24,087 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:24,088 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 35 treesize of output 36 [2021-12-22 00:05:24,091 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 62 treesize of output 50 [2021-12-22 00:05:24,096 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 96 treesize of output 78 [2021-12-22 00:05:24,103 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 40 treesize of output 32 [2021-12-22 00:05:24,105 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 66 treesize of output 58 [2021-12-22 00:05:24,206 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:24,206 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 00:05:24,208 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 00:05:24,215 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 00:05:24,311 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 00:05:24,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:24,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285797767] [2021-12-22 00:05:24,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285797767] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:05:24,311 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 00:05:24,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-12-22 00:05:24,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455102994] [2021-12-22 00:05:24,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 00:05:24,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 00:05:24,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:24,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 00:05:24,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=102, Unknown=3, NotChecked=66, Total=210 [2021-12-22 00:05:24,312 INFO L87 Difference]: Start difference. First operand 226 states and 265 transitions. Second operand has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:26,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:26,459 INFO L93 Difference]: Finished difference Result 238 states and 277 transitions. [2021-12-22 00:05:26,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 00:05:26,460 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-22 00:05:26,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:26,460 INFO L225 Difference]: With dead ends: 238 [2021-12-22 00:05:26,461 INFO L226 Difference]: Without dead ends: 238 [2021-12-22 00:05:26,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=159, Unknown=3, NotChecked=84, Total=306 [2021-12-22 00:05:26,461 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 10 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 344 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:26,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1095 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 586 Invalid, 0 Unknown, 344 Unchecked, 1.9s Time] [2021-12-22 00:05:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-12-22 00:05:26,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2021-12-22 00:05:26,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 172 states have (on average 1.5755813953488371) internal successors, (271), 231 states have internal predecessors, (271), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:26,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 275 transitions. [2021-12-22 00:05:26,465 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 275 transitions. Word has length 22 [2021-12-22 00:05:26,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:26,466 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 275 transitions. [2021-12-22 00:05:26,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:26,466 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 275 transitions. [2021-12-22 00:05:26,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 00:05:26,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:26,466 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:26,475 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 00:05:26,674 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 00:05:26,674 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting create_dataErr9REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:26,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:26,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2075876957, now seen corresponding path program 2 times [2021-12-22 00:05:26,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:26,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659700298] [2021-12-22 00:05:26,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 00:05:26,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:26,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:26,676 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 00:05:26,677 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 00:05:26,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 00:05:26,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:05:26,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-22 00:05:26,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:26,858 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 00:05:26,859 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-22 00:05:26,866 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 11 treesize of output 9 [2021-12-22 00:05:26,892 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 00:05:26,901 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 00:05:27,001 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:05:27,002 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 00:05:27,006 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 00:05:27,112 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 00:05:27,113 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 00:05:27,117 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 00:05:27,185 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 00:05:27,189 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 00:05:27,207 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 00:05:27,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:05:27,540 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_285) c_create_data_~data~0.base) (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd .cse0 (_ bv4 32) .cse1) (bvadd .cse0 (_ bv8 32) .cse1)))) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_285) c_create_data_~data~0.base) .cse2) (_ bv8 32) (bvmul c_create_data_~counter~0 (_ bv4 32))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_286) c_create_data_~data~0.base) .cse2)))))) is different from false [2021-12-22 00:05:27,576 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (bvule (bvadd (_ bv8 32) (bvmul c_create_data_~counter~0 (_ bv4 32)) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_285) c_create_data_~data~0.base) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_286) c_create_data_~data~0.base) .cse1)))))) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse3 (let ((.cse4 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4) v_ArrVal_285) c_create_data_~data~0.base) .cse4)))) (bvule (bvadd (_ bv4 32) .cse2 .cse3) (bvadd (_ bv8 32) .cse2 .cse3))))) is different from false [2021-12-22 00:05:27,649 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse1 (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2) v_ArrVal_285) c_create_data_~data~0.base) .cse2)))) (bvule (bvadd (_ bv8 32) .cse0 .cse1) (bvadd .cse0 (_ bv12 32) .cse1)))) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4))) (bvule (bvadd (bvmul c_create_data_~counter~0 (_ bv4 32)) (_ bv12 32) (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_285) c_create_data_~data~0.base) .cse4)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_286) c_create_data_~data~0.base) .cse4))))))) is different from false [2021-12-22 00:05:27,712 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_284)) (.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse0 (select (select .cse2 c_create_data_~data~0.base) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_283) .cse0 v_ArrVal_285) c_create_data_~data~0.base) .cse1) (bvmul c_create_data_~counter~0 (_ bv4 32)) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_286) c_create_data_~data~0.base) .cse1)))))) (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (let ((.cse5 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_283) (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_284) c_create_data_~data~0.base) .cse5) v_ArrVal_285) c_create_data_~data~0.base) .cse5))) (.cse4 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd (_ bv8 32) .cse3 .cse4) (bvadd .cse3 .cse4 (_ bv12 32)))))) is different from false [2021-12-22 00:05:27,759 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_284))) (let ((.cse1 (select (select .cse3 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_283) .cse1 v_ArrVal_285) c_create_data_~data~0.base) .cse2) (bvmul c_create_data_~counter~0 (_ bv4 32)) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_286) c_create_data_~data~0.base) .cse2)))))))) (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (let ((.cse7 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (let ((.cse6 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse7))) (store (store |c_#memory_$Pointer$.offset| .cse6 v_ArrVal_283) (select (select (store |c_#memory_$Pointer$.base| .cse6 v_ArrVal_284) c_create_data_~data~0.base) .cse7) v_ArrVal_285)) c_create_data_~data~0.base) .cse7))) (.cse5 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd .cse4 (_ bv8 32) .cse5) (bvadd .cse4 .cse5 (_ bv12 32)))))) is different from false [2021-12-22 00:05:27,820 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_283) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_284) c_create_data_~data~0.base) .cse2) v_ArrVal_285)) c_create_data_~data~0.base) .cse2)))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse5))) (let ((.cse6 (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_284))) (let ((.cse4 (select (select .cse6 c_create_data_~data~0.base) .cse5))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_283) .cse4 v_ArrVal_285) c_create_data_~data~0.base) .cse5) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse4 v_ArrVal_286) c_create_data_~data~0.base) .cse5))))))))) is different from false [2021-12-22 00:05:27,843 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:27,843 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 00:05:27,851 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:27,852 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 00:05:27,856 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 00:05:27,859 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 174 treesize of output 144 [2021-12-22 00:05:27,869 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 102 treesize of output 86 [2021-12-22 00:05:27,872 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 124 treesize of output 100 [2021-12-22 00:05:27,881 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 70 treesize of output 62 [2021-12-22 00:05:27,928 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:27,928 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 00:05:27,939 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 00:05:27,939 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 00:05:27,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:05:27,946 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 00:05:27,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:05:27,951 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 00:05:27,956 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 00:05:28,026 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 00:05:28,026 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:28,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659700298] [2021-12-22 00:05:28,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659700298] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:05:28,027 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 00:05:28,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2021-12-22 00:05:28,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067765087] [2021-12-22 00:05:28,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 00:05:28,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-22 00:05:28,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:28,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-22 00:05:28,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=144, Unknown=6, NotChecked=174, Total=380 [2021-12-22 00:05:28,028 INFO L87 Difference]: Start difference. First operand 236 states and 275 transitions. Second operand has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:30,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:30,485 INFO L93 Difference]: Finished difference Result 248 states and 287 transitions. [2021-12-22 00:05:30,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 00:05:30,486 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-22 00:05:30,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:30,487 INFO L225 Difference]: With dead ends: 248 [2021-12-22 00:05:30,487 INFO L226 Difference]: Without dead ends: 248 [2021-12-22 00:05:30,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=239, Unknown=6, NotChecked=222, Total=552 [2021-12-22 00:05:30,488 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 21 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 549 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:30,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 1179 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 537 Invalid, 0 Unknown, 549 Unchecked, 2.0s Time] [2021-12-22 00:05:30,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-12-22 00:05:30,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 246. [2021-12-22 00:05:30,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 182 states have (on average 1.543956043956044) internal successors, (281), 241 states have internal predecessors, (281), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:30,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 285 transitions. [2021-12-22 00:05:30,491 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 285 transitions. Word has length 27 [2021-12-22 00:05:30,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:30,492 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 285 transitions. [2021-12-22 00:05:30,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:30,492 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 285 transitions. [2021-12-22 00:05:30,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 00:05:30,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:30,493 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:30,503 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 00:05:30,695 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 00:05:30,695 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting create_dataErr9REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:30,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:30,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1508640986, now seen corresponding path program 3 times [2021-12-22 00:05:30,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:30,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030402985] [2021-12-22 00:05:30,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 00:05:30,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:30,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:30,697 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 00:05:30,699 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 00:05:30,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-22 00:05:30,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:05:30,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 00:05:30,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:31,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:05:31,170 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:05:31,170 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:31,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030402985] [2021-12-22 00:05:31,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030402985] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:05:31,170 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 00:05:31,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-12-22 00:05:31,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704086370] [2021-12-22 00:05:31,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 00:05:31,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 00:05:31,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:31,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 00:05:31,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-22 00:05:31,171 INFO L87 Difference]: Start difference. First operand 246 states and 285 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:31,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:31,267 INFO L93 Difference]: Finished difference Result 243 states and 279 transitions. [2021-12-22 00:05:31,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:05:31,268 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-22 00:05:31,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:31,269 INFO L225 Difference]: With dead ends: 243 [2021-12-22 00:05:31,269 INFO L226 Difference]: Without dead ends: 243 [2021-12-22 00:05:31,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-22 00:05:31,269 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 48 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:31,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 1247 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 00:05:31,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-12-22 00:05:31,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2021-12-22 00:05:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 178 states have (on average 1.5337078651685394) internal successors, (273), 236 states have internal predecessors, (273), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:31,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 277 transitions. [2021-12-22 00:05:31,275 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 277 transitions. Word has length 32 [2021-12-22 00:05:31,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:31,277 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 277 transitions. [2021-12-22 00:05:31,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:31,277 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 277 transitions. [2021-12-22 00:05:31,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-22 00:05:31,281 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:31,282 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:31,300 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 00:05:31,490 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 00:05:31,491 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting create_dataErr24REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:31,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:31,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1091018630, now seen corresponding path program 1 times [2021-12-22 00:05:31,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:31,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431652715] [2021-12-22 00:05:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:31,492 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:31,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:31,493 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 00:05:31,494 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 00:05:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:31,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 00:05:31,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:31,674 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 00:05:31,677 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 00:05:31,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:31,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:31,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431652715] [2021-12-22 00:05:31,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431652715] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:31,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:31,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:05:31,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679042686] [2021-12-22 00:05:31,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:31,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:05:31,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:31,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:05:31,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:05:31,678 INFO L87 Difference]: Start difference. First operand 241 states and 277 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:31,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:31,863 INFO L93 Difference]: Finished difference Result 243 states and 271 transitions. [2021-12-22 00:05:31,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:05:31,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-12-22 00:05:31,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:31,864 INFO L225 Difference]: With dead ends: 243 [2021-12-22 00:05:31,864 INFO L226 Difference]: Without dead ends: 243 [2021-12-22 00:05:31,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 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 00:05:31,865 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 22 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:31,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 235 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:31,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-12-22 00:05:31,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 237. [2021-12-22 00:05:31,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 178 states have (on average 1.4662921348314606) internal successors, (261), 232 states have internal predecessors, (261), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:31,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 265 transitions. [2021-12-22 00:05:31,871 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 265 transitions. Word has length 42 [2021-12-22 00:05:31,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:31,871 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 265 transitions. [2021-12-22 00:05:31,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:31,872 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 265 transitions. [2021-12-22 00:05:31,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-22 00:05:31,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:31,872 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:31,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-22 00:05:32,080 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 00:05:32,080 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting create_dataErr25REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:32,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:32,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1091018631, now seen corresponding path program 1 times [2021-12-22 00:05:32,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:32,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822017347] [2021-12-22 00:05:32,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:32,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:32,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:32,082 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 00:05:32,083 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 00:05:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:32,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 00:05:32,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:32,282 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 00:05:32,290 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 00:05:32,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:32,290 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:32,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822017347] [2021-12-22 00:05:32,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822017347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:32,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:32,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:05:32,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67347127] [2021-12-22 00:05:32,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:32,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:05:32,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:32,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:05:32,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:05:32,292 INFO L87 Difference]: Start difference. First operand 237 states and 265 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:32,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:32,528 INFO L93 Difference]: Finished difference Result 239 states and 259 transitions. [2021-12-22 00:05:32,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:05:32,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-12-22 00:05:32,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:32,530 INFO L225 Difference]: With dead ends: 239 [2021-12-22 00:05:32,530 INFO L226 Difference]: Without dead ends: 239 [2021-12-22 00:05:32,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 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 00:05:32,530 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 18 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:32,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 234 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:05:32,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-22 00:05:32,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 233. [2021-12-22 00:05:32,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 178 states have (on average 1.398876404494382) internal successors, (249), 228 states have internal predecessors, (249), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:05:32,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 253 transitions. [2021-12-22 00:05:32,535 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 253 transitions. Word has length 42 [2021-12-22 00:05:32,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:32,536 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 253 transitions. [2021-12-22 00:05:32,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 00:05:32,536 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 253 transitions. [2021-12-22 00:05:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 00:05:32,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:32,538 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:32,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:32,746 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 00:05:32,747 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:32,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:32,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1777365236, now seen corresponding path program 1 times [2021-12-22 00:05:32,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:32,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565655612] [2021-12-22 00:05:32,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:32,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:32,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:32,749 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 00:05:32,750 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 00:05:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:33,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 00:05:33,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:33,036 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 00:05:33,087 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 00:05:33,117 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 9 [2021-12-22 00:05:33,358 INFO L353 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-12-22 00:05:33,359 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 4 case distinctions, treesize of input 20 treesize of output 36 [2021-12-22 00:05:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 00:05:33,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:05:35,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:35,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565655612] [2021-12-22 00:05:35,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565655612] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:05:35,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2030563320] [2021-12-22 00:05:35,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:35,546 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-22 00:05:35,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-22 00:05:35,547 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 00:05:35,550 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 00:05:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:35,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 00:05:35,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:35,924 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 00:05:40,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:05:40,934 INFO L353 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-12-22 00:05:40,934 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 2 case distinctions, treesize of input 15 treesize of output 29 [2021-12-22 00:05:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 00:05:40,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:40,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2030563320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:40,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 00:05:40,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-12-22 00:05:40,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298823062] [2021-12-22 00:05:40,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:40,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 00:05:40,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:40,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 00:05:40,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=78, Unknown=3, NotChecked=0, Total=110 [2021-12-22 00:05:40,952 INFO L87 Difference]: Start difference. First operand 233 states and 253 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:05:41,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:41,181 INFO L93 Difference]: Finished difference Result 294 states and 323 transitions. [2021-12-22 00:05:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:05:41,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-12-22 00:05:41,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:41,183 INFO L225 Difference]: With dead ends: 294 [2021-12-22 00:05:41,183 INFO L226 Difference]: Without dead ends: 294 [2021-12-22 00:05:41,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=29, Invalid=78, Unknown=3, NotChecked=0, Total=110 [2021-12-22 00:05:41,183 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 76 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:41,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 474 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 151 Unchecked, 0.2s Time] [2021-12-22 00:05:41,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-12-22 00:05:41,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 249. [2021-12-22 00:05:41,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 192 states have (on average 1.4010416666666667) internal successors, (269), 242 states have internal predecessors, (269), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 00:05:41,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 275 transitions. [2021-12-22 00:05:41,187 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 275 transitions. Word has length 45 [2021-12-22 00:05:41,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:41,187 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 275 transitions. [2021-12-22 00:05:41,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:05:41,188 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 275 transitions. [2021-12-22 00:05:41,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 00:05:41,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:41,188 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:41,194 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 00:05:41,403 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 00:05:41,592 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 00:05:41,592 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:41,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:41,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1777365235, now seen corresponding path program 1 times [2021-12-22 00:05:41,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:41,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117604086] [2021-12-22 00:05:41,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:41,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:41,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:41,594 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 00:05:41,595 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 00:05:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:41,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 00:05:41,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:41,873 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 00:05:41,881 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 00:05:41,960 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 00:05:41,994 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 9 [2021-12-22 00:05:42,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:05:42,288 INFO L353 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-22 00:05:42,288 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 2 case distinctions, treesize of input 15 treesize of output 27 [2021-12-22 00:05:42,297 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:05:42,297 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 00:05:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 00:05:42,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:05:44,521 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:44,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117604086] [2021-12-22 00:05:44,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117604086] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:05:44,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [123896966] [2021-12-22 00:05:44,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:44,522 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-22 00:05:44,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-22 00:05:44,523 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-22 00:05:44,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-12-22 00:05:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:45,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-22 00:05:45,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:45,039 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 00:05:45,042 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 00:05:45,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:05:45,420 INFO L353 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-22 00:05:45,420 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 2 case distinctions, treesize of input 15 treesize of output 27 [2021-12-22 00:05:45,430 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:05:45,431 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 00:05:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 00:05:45,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:45,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [123896966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:45,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 00:05:45,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2021-12-22 00:05:45,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821692535] [2021-12-22 00:05:45,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:45,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:05:45,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:45,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:05:45,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=67, Unknown=1, NotChecked=0, Total=90 [2021-12-22 00:05:45,466 INFO L87 Difference]: Start difference. First operand 249 states and 275 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:05:45,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:45,848 INFO L93 Difference]: Finished difference Result 317 states and 348 transitions. [2021-12-22 00:05:45,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:05:45,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-12-22 00:05:45,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:45,855 INFO L225 Difference]: With dead ends: 317 [2021-12-22 00:05:45,855 INFO L226 Difference]: Without dead ends: 317 [2021-12-22 00:05:45,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=22, Invalid=67, Unknown=1, NotChecked=0, Total=90 [2021-12-22 00:05:45,855 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 72 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:45,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 458 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 248 Invalid, 0 Unknown, 196 Unchecked, 0.4s Time] [2021-12-22 00:05:45,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-12-22 00:05:45,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 249. [2021-12-22 00:05:45,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 192 states have (on average 1.390625) internal successors, (267), 242 states have internal predecessors, (267), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 00:05:45,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 273 transitions. [2021-12-22 00:05:45,860 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 273 transitions. Word has length 45 [2021-12-22 00:05:45,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:45,860 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 273 transitions. [2021-12-22 00:05:45,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:05:45,860 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 273 transitions. [2021-12-22 00:05:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-22 00:05:45,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:45,861 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:45,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:46,077 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 00:05:46,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:46,266 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:46,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:46,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1240596815, now seen corresponding path program 1 times [2021-12-22 00:05:46,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:46,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426027170] [2021-12-22 00:05:46,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:46,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:46,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:46,267 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 00:05:46,268 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 00:05:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:46,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 00:05:46,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:46,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:05:46,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:05:46,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:05:46,600 INFO L353 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-12-22 00:05:46,600 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-12-22 00:05:46,668 INFO L353 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-12-22 00:05:46,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-12-22 00:05:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 00:05:46,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:46,702 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:46,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426027170] [2021-12-22 00:05:46,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426027170] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:46,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:46,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 00:05:46,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015303700] [2021-12-22 00:05:46,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:46,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:05:46,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:46,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:05:46,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:05:46,703 INFO L87 Difference]: Start difference. First operand 249 states and 273 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:05:47,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:47,027 INFO L93 Difference]: Finished difference Result 293 states and 325 transitions. [2021-12-22 00:05:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 00:05:47,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-12-22 00:05:47,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:47,030 INFO L225 Difference]: With dead ends: 293 [2021-12-22 00:05:47,030 INFO L226 Difference]: Without dead ends: 293 [2021-12-22 00:05:47,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-22 00:05:47,031 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 27 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:47,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 711 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 00:05:47,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-12-22 00:05:47,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 259. [2021-12-22 00:05:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 202 states have (on average 1.3762376237623761) internal successors, (278), 252 states have internal predecessors, (278), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 00:05:47,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 284 transitions. [2021-12-22 00:05:47,035 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 284 transitions. Word has length 47 [2021-12-22 00:05:47,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:47,036 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 284 transitions. [2021-12-22 00:05:47,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:05:47,036 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 284 transitions. [2021-12-22 00:05:47,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-22 00:05:47,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:47,036 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:47,059 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 00:05:47,246 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 00:05:47,246 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:47,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:47,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1147840785, now seen corresponding path program 1 times [2021-12-22 00:05:47,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:47,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545047065] [2021-12-22 00:05:47,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:47,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:47,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:47,248 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 00:05:47,248 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 00:05:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:47,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 00:05:47,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:47,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 00:05:47,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:47,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:47,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545047065] [2021-12-22 00:05:47,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545047065] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:47,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:05:47,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:05:47,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164118592] [2021-12-22 00:05:47,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:47,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:05:47,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:47,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:05:47,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:05:47,454 INFO L87 Difference]: Start difference. First operand 259 states and 284 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:05:47,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:47,469 INFO L93 Difference]: Finished difference Result 267 states and 290 transitions. [2021-12-22 00:05:47,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:05:47,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-12-22 00:05:47,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:47,471 INFO L225 Difference]: With dead ends: 267 [2021-12-22 00:05:47,471 INFO L226 Difference]: Without dead ends: 267 [2021-12-22 00:05:47,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 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 00:05:47,472 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 3 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:47,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 458 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:05:47,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-22 00:05:47,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2021-12-22 00:05:47,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 208 states have (on average 1.3557692307692308) internal successors, (282), 258 states have internal predecessors, (282), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 00:05:47,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 288 transitions. [2021-12-22 00:05:47,476 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 288 transitions. Word has length 47 [2021-12-22 00:05:47,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:47,476 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 288 transitions. [2021-12-22 00:05:47,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:05:47,476 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 288 transitions. [2021-12-22 00:05:47,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-22 00:05:47,477 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:47,477 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:47,487 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 00:05:47,685 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 00:05:47,685 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:47,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:47,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1348996156, now seen corresponding path program 1 times [2021-12-22 00:05:47,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:47,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850110552] [2021-12-22 00:05:47,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:47,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:47,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:47,687 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 00:05:47,687 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 00:05:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:47,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 00:05:47,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:48,049 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 00:05:48,091 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 9 [2021-12-22 00:05:48,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:05:48,401 INFO L353 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-22 00:05:48,401 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 2 case distinctions, treesize of input 17 treesize of output 29 [2021-12-22 00:05:48,412 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:05:48,412 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 00:05:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 00:05:48,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:05:48,797 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:48,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850110552] [2021-12-22 00:05:48,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850110552] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:05:48,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [425566961] [2021-12-22 00:05:48,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:48,798 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-22 00:05:48,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-22 00:05:48,800 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-22 00:05:48,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-12-22 00:05:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:49,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-22 00:05:49,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:49,208 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 00:05:49,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:05:49,240 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 00:05:49,383 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 13 treesize of output 9 [2021-12-22 00:05:50,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:05:50,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:05:50,564 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 00:05:50,564 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 1 case distinctions, treesize of input 22 treesize of output 28 [2021-12-22 00:05:50,681 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 00:05:50,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:50,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [425566961] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:50,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 00:05:50,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2021-12-22 00:05:50,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869383252] [2021-12-22 00:05:50,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:50,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 00:05:50,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:50,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 00:05:50,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-12-22 00:05:50,682 INFO L87 Difference]: Start difference. First operand 265 states and 288 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:05:51,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:51,058 INFO L93 Difference]: Finished difference Result 305 states and 332 transitions. [2021-12-22 00:05:51,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 00:05:51,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-12-22 00:05:51,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:51,062 INFO L225 Difference]: With dead ends: 305 [2021-12-22 00:05:51,062 INFO L226 Difference]: Without dead ends: 305 [2021-12-22 00:05:51,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-12-22 00:05:51,063 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 11 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:51,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 476 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 151 Unchecked, 0.3s Time] [2021-12-22 00:05:51,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-12-22 00:05:51,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 304. [2021-12-22 00:05:51,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 245 states have (on average 1.3142857142857143) internal successors, (322), 295 states have internal predecessors, (322), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-22 00:05:51,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 331 transitions. [2021-12-22 00:05:51,067 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 331 transitions. Word has length 47 [2021-12-22 00:05:51,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:51,067 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 331 transitions. [2021-12-22 00:05:51,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:05:51,068 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 331 transitions. [2021-12-22 00:05:51,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-22 00:05:51,068 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:51,068 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:51,080 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 00:05:51,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2021-12-22 00:05:51,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-12-22 00:05:51,478 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:51,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:51,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1348996155, now seen corresponding path program 1 times [2021-12-22 00:05:51,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:51,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456995378] [2021-12-22 00:05:51,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:51,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:51,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:51,480 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 00:05:51,480 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 00:05:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:51,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 00:05:51,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:51,809 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 00:05:51,841 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 9 [2021-12-22 00:05:52,081 INFO L353 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-12-22 00:05:52,081 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 4 case distinctions, treesize of input 20 treesize of output 36 [2021-12-22 00:05:52,168 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 00:05:52,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:05:54,225 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:54,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456995378] [2021-12-22 00:05:54,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456995378] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:05:54,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [324551173] [2021-12-22 00:05:54,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:54,226 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-22 00:05:54,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-22 00:05:54,227 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-22 00:05:54,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-12-22 00:05:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:54,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 00:05:54,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:54,760 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 5 treesize of output 3 [2021-12-22 00:05:55,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:05:55,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:05:55,653 INFO L353 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-22 00:05:55,654 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 1 case distinctions, treesize of input 15 treesize of output 26 [2021-12-22 00:05:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 00:05:55,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:05:55,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [324551173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:05:55,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 00:05:55,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2021-12-22 00:05:55,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588107636] [2021-12-22 00:05:55,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:05:55,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 00:05:55,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:05:55,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 00:05:55,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=147, Unknown=1, NotChecked=0, Total=182 [2021-12-22 00:05:55,721 INFO L87 Difference]: Start difference. First operand 304 states and 331 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:05:55,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:05:55,945 INFO L93 Difference]: Finished difference Result 305 states and 331 transitions. [2021-12-22 00:05:55,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 00:05:55,946 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-12-22 00:05:55,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:05:55,947 INFO L225 Difference]: With dead ends: 305 [2021-12-22 00:05:55,947 INFO L226 Difference]: Without dead ends: 305 [2021-12-22 00:05:55,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=46, Invalid=193, Unknown=1, NotChecked=0, Total=240 [2021-12-22 00:05:55,947 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 11 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:05:55,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 637 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 144 Unchecked, 0.2s Time] [2021-12-22 00:05:55,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-12-22 00:05:55,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 304. [2021-12-22 00:05:55,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 245 states have (on average 1.310204081632653) internal successors, (321), 295 states have internal predecessors, (321), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-22 00:05:55,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 330 transitions. [2021-12-22 00:05:55,952 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 330 transitions. Word has length 47 [2021-12-22 00:05:55,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:05:55,952 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 330 transitions. [2021-12-22 00:05:55,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:05:55,952 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 330 transitions. [2021-12-22 00:05:55,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-22 00:05:55,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:05:55,952 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:05:55,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-12-22 00:05:56,162 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 00:05:56,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:05:56,353 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:05:56,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:05:56,353 INFO L85 PathProgramCache]: Analyzing trace with hash 10765426, now seen corresponding path program 1 times [2021-12-22 00:05:56,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:05:56,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613136776] [2021-12-22 00:05:56,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:56,354 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:05:56,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:05:56,355 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:05:56,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-22 00:05:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:56,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-22 00:05:56,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:56,641 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 00:05:56,674 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 00:05:56,704 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 9 [2021-12-22 00:05:56,924 INFO L353 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2021-12-22 00:05:56,924 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 4 case distinctions, treesize of input 20 treesize of output 32 [2021-12-22 00:05:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 00:05:56,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:05:59,018 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:05:59,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613136776] [2021-12-22 00:05:59,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613136776] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:05:59,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [816288263] [2021-12-22 00:05:59,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:05:59,018 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-22 00:05:59,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-22 00:05:59,019 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-22 00:05:59,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-12-22 00:05:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:05:59,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 00:05:59,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:05:59,476 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 00:06:01,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 00:06:01,695 INFO L353 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-12-22 00:06:01,695 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 2 case distinctions, treesize of input 15 treesize of output 29 [2021-12-22 00:06:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 00:06:01,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:06:01,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [816288263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:06:01,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 00:06:01,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2021-12-22 00:06:01,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083108808] [2021-12-22 00:06:01,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:06:01,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 00:06:01,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:06:01,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 00:06:01,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=97, Unknown=2, NotChecked=0, Total=132 [2021-12-22 00:06:01,710 INFO L87 Difference]: Start difference. First operand 304 states and 330 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:06:01,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:01,918 INFO L93 Difference]: Finished difference Result 356 states and 388 transitions. [2021-12-22 00:06:01,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:06:01,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-12-22 00:06:01,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:01,919 INFO L225 Difference]: With dead ends: 356 [2021-12-22 00:06:01,919 INFO L226 Difference]: Without dead ends: 356 [2021-12-22 00:06:01,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=33, Invalid=97, Unknown=2, NotChecked=0, Total=132 [2021-12-22 00:06:01,920 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 75 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:01,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 485 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 178 Unchecked, 0.2s Time] [2021-12-22 00:06:01,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-12-22 00:06:01,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 315. [2021-12-22 00:06:01,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 255 states have (on average 1.3098039215686275) internal successors, (334), 305 states have internal predecessors, (334), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 00:06:01,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 345 transitions. [2021-12-22 00:06:01,925 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 345 transitions. Word has length 49 [2021-12-22 00:06:01,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:01,926 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 345 transitions. [2021-12-22 00:06:01,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:06:01,926 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 345 transitions. [2021-12-22 00:06:01,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-22 00:06:01,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:01,927 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:01,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2021-12-22 00:06:02,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-12-22 00:06:02,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:06:02,332 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:06:02,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:02,332 INFO L85 PathProgramCache]: Analyzing trace with hash 10765427, now seen corresponding path program 1 times [2021-12-22 00:06:02,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:06:02,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070519795] [2021-12-22 00:06:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:02,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:06:02,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:06:02,333 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:06:02,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-22 00:06:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:02,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 00:06:02,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:02,666 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 00:06:02,669 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 00:06:02,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 00:06:02,792 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 9 [2021-12-22 00:06:03,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:06:03,090 INFO L353 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-22 00:06:03,091 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 2 case distinctions, treesize of input 15 treesize of output 27 [2021-12-22 00:06:03,100 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:06:03,100 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 00:06:03,146 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 00:06:03,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:06:05,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:06:05,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070519795] [2021-12-22 00:06:05,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070519795] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:06:05,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1891393557] [2021-12-22 00:06:05,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:05,296 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-22 00:06:05,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-22 00:06:05,297 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-22 00:06:05,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-12-22 00:06:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:05,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-22 00:06:05,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:05,829 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 00:06:05,832 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 00:06:06,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:06:06,238 INFO L353 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-22 00:06:06,238 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 2 case distinctions, treesize of input 15 treesize of output 27 [2021-12-22 00:06:06,248 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:06:06,248 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 00:06:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 00:06:06,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:06:06,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1891393557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:06:06,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 00:06:06,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 8 [2021-12-22 00:06:06,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029939739] [2021-12-22 00:06:06,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:06:06,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 00:06:06,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:06:06,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 00:06:06,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2021-12-22 00:06:06,277 INFO L87 Difference]: Start difference. First operand 315 states and 345 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:06:06,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:06,634 INFO L93 Difference]: Finished difference Result 380 states and 414 transitions. [2021-12-22 00:06:06,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:06:06,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-12-22 00:06:06,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:06,636 INFO L225 Difference]: With dead ends: 380 [2021-12-22 00:06:06,636 INFO L226 Difference]: Without dead ends: 380 [2021-12-22 00:06:06,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2021-12-22 00:06:06,637 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 72 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:06,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 553 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 248 Invalid, 0 Unknown, 321 Unchecked, 0.3s Time] [2021-12-22 00:06:06,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-12-22 00:06:06,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 314. [2021-12-22 00:06:06,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 254 states have (on average 1.3070866141732282) internal successors, (332), 305 states have internal predecessors, (332), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 00:06:06,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 343 transitions. [2021-12-22 00:06:06,652 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 343 transitions. Word has length 49 [2021-12-22 00:06:06,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:06,652 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 343 transitions. [2021-12-22 00:06:06,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:06:06,653 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 343 transitions. [2021-12-22 00:06:06,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-22 00:06:06,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:06,653 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:06,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-12-22 00:06:06,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2021-12-22 00:06:07,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-12-22 00:06:07,064 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:06:07,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:07,064 INFO L85 PathProgramCache]: Analyzing trace with hash -694813700, now seen corresponding path program 1 times [2021-12-22 00:06:07,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:06:07,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369054359] [2021-12-22 00:06:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:07,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:06:07,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:06:07,065 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:06:07,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-12-22 00:06:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:07,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 00:06:07,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 00:06:07,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:06:07,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:06:07,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369054359] [2021-12-22 00:06:07,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369054359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:06:07,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:06:07,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:06:07,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493081883] [2021-12-22 00:06:07,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:06:07,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:06:07,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:06:07,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:06:07,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:06:07,309 INFO L87 Difference]: Start difference. First operand 314 states and 343 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:06:07,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:07,495 INFO L93 Difference]: Finished difference Result 313 states and 342 transitions. [2021-12-22 00:06:07,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:06:07,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-12-22 00:06:07,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:07,496 INFO L225 Difference]: With dead ends: 313 [2021-12-22 00:06:07,496 INFO L226 Difference]: Without dead ends: 313 [2021-12-22 00:06:07,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:06:07,497 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 140 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:07,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 220 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:06:07,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-22 00:06:07,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-12-22 00:06:07,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 254 states have (on average 1.3031496062992125) internal successors, (331), 304 states have internal predecessors, (331), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 00:06:07,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 342 transitions. [2021-12-22 00:06:07,501 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 342 transitions. Word has length 49 [2021-12-22 00:06:07,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:07,501 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 342 transitions. [2021-12-22 00:06:07,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:06:07,502 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 342 transitions. [2021-12-22 00:06:07,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-22 00:06:07,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:07,502 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:07,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-12-22 00:06:07,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:06:07,710 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:06:07,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:07,711 INFO L85 PathProgramCache]: Analyzing trace with hash -694813699, now seen corresponding path program 1 times [2021-12-22 00:06:07,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:06:07,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160737089] [2021-12-22 00:06:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:07,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:06:07,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:06:07,712 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:06:07,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-12-22 00:06:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:07,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 00:06:07,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:08,044 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 00:06:08,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:06:08,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:06:08,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160737089] [2021-12-22 00:06:08,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160737089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:06:08,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:06:08,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:06:08,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550805762] [2021-12-22 00:06:08,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:06:08,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:06:08,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:06:08,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:06:08,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:06:08,045 INFO L87 Difference]: Start difference. First operand 313 states and 342 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:06:08,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:08,295 INFO L93 Difference]: Finished difference Result 304 states and 333 transitions. [2021-12-22 00:06:08,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:06:08,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-12-22 00:06:08,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:08,310 INFO L225 Difference]: With dead ends: 304 [2021-12-22 00:06:08,310 INFO L226 Difference]: Without dead ends: 304 [2021-12-22 00:06:08,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:06:08,311 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 151 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:08,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 217 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:06:08,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-12-22 00:06:08,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-12-22 00:06:08,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 254 states have (on average 1.2677165354330708) internal successors, (322), 295 states have internal predecessors, (322), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 00:06:08,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 333 transitions. [2021-12-22 00:06:08,315 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 333 transitions. Word has length 49 [2021-12-22 00:06:08,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:08,316 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 333 transitions. [2021-12-22 00:06:08,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:06:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 333 transitions. [2021-12-22 00:06:08,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-22 00:06:08,316 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:08,316 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:08,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-12-22 00:06:08,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:06:08,526 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:06:08,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:08,526 INFO L85 PathProgramCache]: Analyzing trace with hash -64388068, now seen corresponding path program 1 times [2021-12-22 00:06:08,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:06:08,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593834499] [2021-12-22 00:06:08,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:08,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:06:08,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:06:08,528 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:06:08,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-12-22 00:06:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:08,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 00:06:08,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:08,831 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 00:06:08,841 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 00:06:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 00:06:08,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:06:08,848 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:06:08,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593834499] [2021-12-22 00:06:08,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593834499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:06:08,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:06:08,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:06:08,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068161016] [2021-12-22 00:06:08,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:06:08,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:06:08,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:06:08,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:06:08,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:06:08,849 INFO L87 Difference]: Start difference. First operand 304 states and 333 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:06:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:09,203 INFO L93 Difference]: Finished difference Result 325 states and 355 transitions. [2021-12-22 00:06:09,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:06:09,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-12-22 00:06:09,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:09,205 INFO L225 Difference]: With dead ends: 325 [2021-12-22 00:06:09,205 INFO L226 Difference]: Without dead ends: 325 [2021-12-22 00:06:09,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:06:09,205 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 150 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:09,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 364 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 00:06:09,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-12-22 00:06:09,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 303. [2021-12-22 00:06:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 254 states have (on average 1.263779527559055) internal successors, (321), 294 states have internal predecessors, (321), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 00:06:09,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 332 transitions. [2021-12-22 00:06:09,210 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 332 transitions. Word has length 50 [2021-12-22 00:06:09,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:09,210 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 332 transitions. [2021-12-22 00:06:09,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:06:09,210 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 332 transitions. [2021-12-22 00:06:09,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-22 00:06:09,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:09,210 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:09,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-12-22 00:06:09,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:06:09,411 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:06:09,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:09,411 INFO L85 PathProgramCache]: Analyzing trace with hash -64388067, now seen corresponding path program 1 times [2021-12-22 00:06:09,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:06:09,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038806992] [2021-12-22 00:06:09,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:09,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:06:09,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:06:09,412 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:06:09,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-12-22 00:06:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:09,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-22 00:06:09,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:09,751 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 00:06:09,754 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 00:06:09,772 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 00:06:09,774 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 00:06:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 00:06:09,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:06:09,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:06:09,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038806992] [2021-12-22 00:06:09,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038806992] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:06:09,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:06:09,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:06:09,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912595483] [2021-12-22 00:06:09,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:06:09,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:06:09,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:06:09,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:06:09,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:06:09,786 INFO L87 Difference]: Start difference. First operand 303 states and 332 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:06:10,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:10,217 INFO L93 Difference]: Finished difference Result 341 states and 371 transitions. [2021-12-22 00:06:10,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:06:10,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-12-22 00:06:10,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:10,219 INFO L225 Difference]: With dead ends: 341 [2021-12-22 00:06:10,219 INFO L226 Difference]: Without dead ends: 341 [2021-12-22 00:06:10,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 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 00:06:10,219 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 181 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:10,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 348 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 00:06:10,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-12-22 00:06:10,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 302. [2021-12-22 00:06:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 254 states have (on average 1.2598425196850394) internal successors, (320), 293 states have internal predecessors, (320), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 00:06:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 331 transitions. [2021-12-22 00:06:10,224 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 331 transitions. Word has length 50 [2021-12-22 00:06:10,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:10,224 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 331 transitions. [2021-12-22 00:06:10,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:06:10,224 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 331 transitions. [2021-12-22 00:06:10,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-22 00:06:10,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:10,224 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:10,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-12-22 00:06:10,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:06:10,431 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:06:10,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:10,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1755643938, now seen corresponding path program 1 times [2021-12-22 00:06:10,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:06:10,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468379799] [2021-12-22 00:06:10,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:10,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:06:10,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:06:10,433 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:06:10,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-12-22 00:06:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:10,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 00:06:10,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:10,820 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 00:06:10,856 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 9 [2021-12-22 00:06:11,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:06:11,139 INFO L353 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-22 00:06:11,140 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 2 case distinctions, treesize of input 17 treesize of output 29 [2021-12-22 00:06:11,149 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 00:06:11,149 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 00:06:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 00:06:11,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:06:12,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:06:12,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468379799] [2021-12-22 00:06:12,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468379799] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:06:12,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1511659722] [2021-12-22 00:06:12,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:12,228 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-22 00:06:12,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-22 00:06:12,228 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-22 00:06:12,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2021-12-22 00:06:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:12,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-22 00:06:12,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:12,717 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 00:06:12,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:06:12,752 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 00:06:12,878 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 00:06:14,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:06:14,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:06:14,197 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 00:06:14,197 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 1 case distinctions, treesize of input 22 treesize of output 28 [2021-12-22 00:06:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 00:06:14,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:06:14,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1511659722] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:06:14,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 00:06:14,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2021-12-22 00:06:14,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544496238] [2021-12-22 00:06:14,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:06:14,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 00:06:14,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:06:14,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 00:06:14,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-12-22 00:06:14,305 INFO L87 Difference]: Start difference. First operand 302 states and 331 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:06:14,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:14,641 INFO L93 Difference]: Finished difference Result 320 states and 351 transitions. [2021-12-22 00:06:14,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 00:06:14,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-12-22 00:06:14,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:14,643 INFO L225 Difference]: With dead ends: 320 [2021-12-22 00:06:14,643 INFO L226 Difference]: Without dead ends: 320 [2021-12-22 00:06:14,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-12-22 00:06:14,644 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 13 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:14,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 459 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 122 Unchecked, 0.2s Time] [2021-12-22 00:06:14,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-12-22 00:06:14,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 312. [2021-12-22 00:06:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 264 states have (on average 1.2575757575757576) internal successors, (332), 302 states have internal predecessors, (332), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 00:06:14,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 342 transitions. [2021-12-22 00:06:14,648 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 342 transitions. Word has length 51 [2021-12-22 00:06:14,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:14,648 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 342 transitions. [2021-12-22 00:06:14,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:06:14,649 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 342 transitions. [2021-12-22 00:06:14,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-22 00:06:14,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:14,649 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:14,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-12-22 00:06:14,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2021-12-22 00:06:15,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-12-22 00:06:15,060 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:06:15,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:15,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1755643937, now seen corresponding path program 1 times [2021-12-22 00:06:15,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:06:15,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601172315] [2021-12-22 00:06:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:15,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:06:15,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:06:15,061 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:06:15,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-12-22 00:06:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:15,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-22 00:06:15,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:15,411 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 00:06:15,448 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 00:06:15,480 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 9 [2021-12-22 00:06:15,710 INFO L353 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2021-12-22 00:06:15,710 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 4 case distinctions, treesize of input 20 treesize of output 32 [2021-12-22 00:06:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 00:06:15,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:06:19,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:06:19,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601172315] [2021-12-22 00:06:19,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601172315] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 00:06:19,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1873424116] [2021-12-22 00:06:19,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:19,872 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-22 00:06:19,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-22 00:06:19,872 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-22 00:06:19,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2021-12-22 00:06:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:20,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 00:06:20,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:20,523 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 5 treesize of output 3 [2021-12-22 00:06:21,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:06:21,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 00:06:21,606 INFO L353 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-22 00:06:21,606 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 1 case distinctions, treesize of input 15 treesize of output 26 [2021-12-22 00:06:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 00:06:21,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:06:21,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1873424116] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:06:21,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 00:06:21,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2021-12-22 00:06:21,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053599314] [2021-12-22 00:06:21,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:06:21,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 00:06:21,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:06:21,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 00:06:21,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=170, Unknown=2, NotChecked=0, Total=210 [2021-12-22 00:06:21,673 INFO L87 Difference]: Start difference. First operand 312 states and 342 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:06:21,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:06:21,888 INFO L93 Difference]: Finished difference Result 313 states and 342 transitions. [2021-12-22 00:06:21,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 00:06:21,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-12-22 00:06:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:06:21,889 INFO L225 Difference]: With dead ends: 313 [2021-12-22 00:06:21,889 INFO L226 Difference]: Without dead ends: 313 [2021-12-22 00:06:21,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=50, Invalid=220, Unknown=2, NotChecked=0, Total=272 [2021-12-22 00:06:21,889 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 13 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:06:21,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 577 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 138 Unchecked, 0.2s Time] [2021-12-22 00:06:21,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-22 00:06:21,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 302. [2021-12-22 00:06:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 255 states have (on average 1.2588235294117647) internal successors, (321), 293 states have internal predecessors, (321), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-22 00:06:21,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 330 transitions. [2021-12-22 00:06:21,894 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 330 transitions. Word has length 51 [2021-12-22 00:06:21,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:06:21,894 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 330 transitions. [2021-12-22 00:06:21,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:06:21,895 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 330 transitions. [2021-12-22 00:06:21,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-22 00:06:21,895 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:06:21,895 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:06:21,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-12-22 00:06:22,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (40)] Ended with exit code 0 [2021-12-22 00:06:22,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-12-22 00:06:22,305 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-22 00:06:22,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:06:22,306 INFO L85 PathProgramCache]: Analyzing trace with hash 94040226, now seen corresponding path program 1 times [2021-12-22 00:06:22,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:06:22,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483923348] [2021-12-22 00:06:22,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:06:22,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:06:22,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:06:22,307 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:06:22,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-12-22 00:06:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:06:22,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 00:06:22,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:06:22,652 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 00:06:22,669 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 00:06:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 00:06:22,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:06:22,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:06:22,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483923348] [2021-12-22 00:06:22,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483923348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:06:22,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:06:22,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:06:22,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648058770] [2021-12-22 00:06:22,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:06:22,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:06:22,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:06:22,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:06:22,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:06:22,678 INFO L87 Difference]: Start difference. First operand 302 states and 330 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)