./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.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/uthash-2.0.2/uthash_OAT_test10-3.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 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 02:48:27,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 02:48:27,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 02:48:27,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 02:48:27,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 02:48:27,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 02:48:27,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 02:48:27,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 02:48:27,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 02:48:27,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 02:48:27,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 02:48:27,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 02:48:27,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 02:48:27,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 02:48:27,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 02:48:27,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 02:48:27,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 02:48:27,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 02:48:27,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 02:48:27,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 02:48:27,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 02:48:27,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 02:48:27,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 02:48:27,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 02:48:27,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 02:48:27,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 02:48:27,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 02:48:27,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 02:48:27,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 02:48:27,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 02:48:27,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 02:48:27,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 02:48:27,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 02:48:27,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 02:48:27,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 02:48:27,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 02:48:27,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 02:48:27,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 02:48:27,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 02:48:27,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 02:48:27,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 02:48:27,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-22 02:48:27,926 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 02:48:27,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 02:48:27,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 02:48:27,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 02:48:27,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 02:48:27,927 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 02:48:27,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 02:48:27,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 02:48:27,928 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 02:48:27,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 02:48:27,928 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 02:48:27,928 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 02:48:27,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 02:48:27,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 02:48:27,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 02:48:27,929 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 02:48:27,929 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 02:48:27,929 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 02:48:27,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 02:48:27,930 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 02:48:27,930 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 02:48:27,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 02:48:27,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 02:48:27,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 02:48:27,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 02:48:27,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 02:48:27,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 02:48:27,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 02:48:27,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 02:48:27,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 02:48:27,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 02:48:27,931 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e [2021-12-22 02:48:28,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 02:48:28,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 02:48:28,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 02:48:28,151 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 02:48:28,151 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 02:48:28,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2021-12-22 02:48:28,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c78ab993/e6db4118249f4a45bca87b9edb375ba7/FLAG0171379b4 [2021-12-22 02:48:28,714 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 02:48:28,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2021-12-22 02:48:28,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c78ab993/e6db4118249f4a45bca87b9edb375ba7/FLAG0171379b4 [2021-12-22 02:48:29,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c78ab993/e6db4118249f4a45bca87b9edb375ba7 [2021-12-22 02:48:29,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 02:48:29,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 02:48:29,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 02:48:29,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 02:48:29,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 02:48:29,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:48:29" (1/1) ... [2021-12-22 02:48:29,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ba7007c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:29, skipping insertion in model container [2021-12-22 02:48:29,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:48:29" (1/1) ... [2021-12-22 02:48:29,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 02:48:29,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 02:48:29,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2021-12-22 02:48:29,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 02:48:29,813 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 02:48:29,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@440353bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:29, skipping insertion in model container [2021-12-22 02:48:29,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 02:48:29,814 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-22 02:48:29,815 INFO L158 Benchmark]: Toolchain (without parser) took 619.57ms. Allocated memory is still 100.7MB. Free memory was 57.8MB in the beginning and 57.4MB in the end (delta: 386.1kB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-12-22 02:48:29,816 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 02:48:29,817 INFO L158 Benchmark]: CACSL2BoogieTranslator took 615.69ms. Allocated memory is still 100.7MB. Free memory was 57.6MB in the beginning and 57.4MB in the end (delta: 202.3kB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-12-22 02:48:29,818 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 615.69ms. Allocated memory is still 100.7MB. Free memory was 57.6MB in the beginning and 57.4MB in the end (delta: 202.3kB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.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 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 02:48:31,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 02:48:31,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 02:48:31,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 02:48:31,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 02:48:31,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 02:48:31,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 02:48:31,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 02:48:31,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 02:48:31,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 02:48:31,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 02:48:31,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 02:48:31,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 02:48:31,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 02:48:31,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 02:48:31,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 02:48:31,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 02:48:31,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 02:48:31,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 02:48:31,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 02:48:31,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 02:48:31,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 02:48:31,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 02:48:31,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 02:48:31,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 02:48:31,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 02:48:31,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 02:48:31,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 02:48:31,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 02:48:31,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 02:48:31,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 02:48:31,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 02:48:31,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 02:48:31,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 02:48:31,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 02:48:31,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 02:48:31,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 02:48:31,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 02:48:31,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 02:48:31,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 02:48:31,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 02:48:31,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-22 02:48:31,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 02:48:31,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 02:48:31,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 02:48:31,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 02:48:31,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 02:48:31,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 02:48:31,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 02:48:31,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 02:48:31,722 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 02:48:31,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 02:48:31,723 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 02:48:31,723 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 02:48:31,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 02:48:31,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 02:48:31,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 02:48:31,724 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 02:48:31,724 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 02:48:31,724 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 02:48:31,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 02:48:31,725 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 02:48:31,725 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 02:48:31,725 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 02:48:31,725 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 02:48:31,725 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 02:48:31,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 02:48:31,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 02:48:31,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 02:48:31,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 02:48:31,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 02:48:31,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 02:48:31,726 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 02:48:31,726 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 02:48:31,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 02:48:31,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 02:48:31,727 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e [2021-12-22 02:48:31,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 02:48:31,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 02:48:31,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 02:48:31,983 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 02:48:31,983 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 02:48:31,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2021-12-22 02:48:32,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b057f1f35/fa57425d8838406cb0cf8f7d48955ac7/FLAGff2c436f7 [2021-12-22 02:48:32,451 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 02:48:32,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2021-12-22 02:48:32,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b057f1f35/fa57425d8838406cb0cf8f7d48955ac7/FLAGff2c436f7 [2021-12-22 02:48:32,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b057f1f35/fa57425d8838406cb0cf8f7d48955ac7 [2021-12-22 02:48:32,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 02:48:32,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 02:48:32,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 02:48:32,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 02:48:32,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 02:48:32,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:48:32" (1/1) ... [2021-12-22 02:48:32,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1646a302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:32, skipping insertion in model container [2021-12-22 02:48:32,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:48:32" (1/1) ... [2021-12-22 02:48:32,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 02:48:32,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 02:48:32,878 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2021-12-22 02:48:33,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 02:48:33,124 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-22 02:48:33,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 02:48:33,143 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2021-12-22 02:48:33,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 02:48:33,238 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 02:48:33,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2021-12-22 02:48:33,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 02:48:33,385 INFO L208 MainTranslator]: Completed translation [2021-12-22 02:48:33,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:33 WrapperNode [2021-12-22 02:48:33,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 02:48:33,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 02:48:33,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 02:48:33,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 02:48:33,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:33" (1/1) ... [2021-12-22 02:48:33,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:33" (1/1) ... [2021-12-22 02:48:33,527 INFO L137 Inliner]: procedures = 180, calls = 623, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2491 [2021-12-22 02:48:33,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 02:48:33,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 02:48:33,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 02:48:33,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 02:48:33,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:33" (1/1) ... [2021-12-22 02:48:33,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:33" (1/1) ... [2021-12-22 02:48:33,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:33" (1/1) ... [2021-12-22 02:48:33,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:33" (1/1) ... [2021-12-22 02:48:33,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:33" (1/1) ... [2021-12-22 02:48:33,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:33" (1/1) ... [2021-12-22 02:48:33,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:33" (1/1) ... [2021-12-22 02:48:33,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 02:48:33,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 02:48:33,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 02:48:33,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 02:48:33,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:33" (1/1) ... [2021-12-22 02:48:33,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 02:48:33,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 02:48:33,699 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 02:48:33,705 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 02:48:33,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-22 02:48:33,729 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-12-22 02:48:33,730 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-12-22 02:48:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-22 02:48:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 02:48:33,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 02:48:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 02:48:33,730 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 02:48:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 02:48:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 02:48:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 02:48:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 02:48:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-22 02:48:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 02:48:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 02:48:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-22 02:48:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 02:48:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 02:48:33,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 02:48:33,997 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 02:48:33,999 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 02:48:34,001 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 02:48:40,602 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 02:48:40,625 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 02:48:40,626 INFO L299 CfgBuilder]: Removed 168 assume(true) statements. [2021-12-22 02:48:40,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:48:40 BoogieIcfgContainer [2021-12-22 02:48:40,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 02:48:40,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 02:48:40,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 02:48:40,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 02:48:40,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:48:32" (1/3) ... [2021-12-22 02:48:40,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15361995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:48:40, skipping insertion in model container [2021-12-22 02:48:40,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:33" (2/3) ... [2021-12-22 02:48:40,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15361995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:48:40, skipping insertion in model container [2021-12-22 02:48:40,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:48:40" (3/3) ... [2021-12-22 02:48:40,651 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-3.i [2021-12-22 02:48:40,655 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 02:48:40,656 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1193 error locations. [2021-12-22 02:48:40,729 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 02:48:40,735 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 02:48:40,735 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1193 error locations. [2021-12-22 02:48:40,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 2437 states, 1232 states have (on average 2.2280844155844157) internal successors, (2745), 2423 states have internal predecessors, (2745), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-22 02:48:40,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-22 02:48:40,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 02:48:40,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-22 02:48:40,780 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-12-22 02:48:40,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 02:48:40,783 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2021-12-22 02:48:40,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 02:48:40,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052253305] [2021-12-22 02:48:40,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 02:48:40,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 02:48:40,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 02:48:40,796 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 02:48:40,801 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 02:48:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 02:48:40,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 02:48:40,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 02:48:41,065 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 02:48:41,071 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 02:48:41,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 02:48:41,072 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 02:48:41,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052253305] [2021-12-22 02:48:41,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052253305] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 02:48:41,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 02:48:41,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 02:48:41,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89971913] [2021-12-22 02:48:41,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 02:48:41,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 02:48:41,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 02:48:41,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 02:48:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 02:48:41,118 INFO L87 Difference]: Start difference. First operand has 2437 states, 1232 states have (on average 2.2280844155844157) internal successors, (2745), 2423 states have internal predecessors, (2745), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:48:43,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 02:48:43,977 INFO L93 Difference]: Finished difference Result 3281 states and 3483 transitions. [2021-12-22 02:48:43,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 02:48:43,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-22 02:48:43,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 02:48:44,020 INFO L225 Difference]: With dead ends: 3281 [2021-12-22 02:48:44,021 INFO L226 Difference]: Without dead ends: 3279 [2021-12-22 02:48:44,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 02:48:44,025 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 2318 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2328 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-22 02:48:44,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2328 Valid, 2230 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-22 02:48:44,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2021-12-22 02:48:44,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2579. [2021-12-22 02:48:44,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2579 states, 1398 states have (on average 2.067238912732475) internal successors, (2890), 2563 states have internal predecessors, (2890), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-22 02:48:44,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 2922 transitions. [2021-12-22 02:48:44,147 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 2922 transitions. Word has length 3 [2021-12-22 02:48:44,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 02:48:44,147 INFO L470 AbstractCegarLoop]: Abstraction has 2579 states and 2922 transitions. [2021-12-22 02:48:44,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:48:44,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 2922 transitions. [2021-12-22 02:48:44,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-22 02:48:44,148 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 02:48:44,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-22 02:48:44,156 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 02:48:44,355 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 02:48:44,356 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-12-22 02:48:44,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 02:48:44,358 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2021-12-22 02:48:44,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 02:48:44,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788635885] [2021-12-22 02:48:44,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 02:48:44,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 02:48:44,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 02:48:44,370 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 02:48:44,372 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 02:48:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 02:48:44,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 02:48:44,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 02:48:44,533 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 02:48:44,539 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 02:48:44,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 02:48:44,540 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 02:48:44,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788635885] [2021-12-22 02:48:44,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788635885] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 02:48:44,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 02:48:44,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 02:48:44,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674875186] [2021-12-22 02:48:44,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 02:48:44,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 02:48:44,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 02:48:44,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 02:48:44,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 02:48:44,542 INFO L87 Difference]: Start difference. First operand 2579 states and 2922 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:48:48,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 02:48:48,536 INFO L93 Difference]: Finished difference Result 3727 states and 4170 transitions. [2021-12-22 02:48:48,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 02:48:48,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-22 02:48:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 02:48:48,545 INFO L225 Difference]: With dead ends: 3727 [2021-12-22 02:48:48,546 INFO L226 Difference]: Without dead ends: 3727 [2021-12-22 02:48:48,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 02:48:48,547 INFO L933 BasicCegarLoop]: 2045 mSDtfsCounter, 1240 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 3433 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-22 02:48:48,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1244 Valid, 3433 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1695 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-22 02:48:48,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2021-12-22 02:48:48,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 3028. [2021-12-22 02:48:48,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 1845 states have (on average 2.0233062330623306) internal successors, (3733), 3009 states have internal predecessors, (3733), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-22 02:48:48,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 3771 transitions. [2021-12-22 02:48:48,595 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 3771 transitions. Word has length 3 [2021-12-22 02:48:48,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 02:48:48,595 INFO L470 AbstractCegarLoop]: Abstraction has 3028 states and 3771 transitions. [2021-12-22 02:48:48,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:48:48,595 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 3771 transitions. [2021-12-22 02:48:48,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 02:48:48,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 02:48:48,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 02:48:48,616 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 02:48:48,802 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 02:48:48,803 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-12-22 02:48:48,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 02:48:48,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1375609072, now seen corresponding path program 1 times [2021-12-22 02:48:48,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 02:48:48,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279949510] [2021-12-22 02:48:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 02:48:48,804 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 02:48:48,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 02:48:48,805 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 02:48:48,807 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 02:48:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 02:48:48,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 02:48:49,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 02:48:49,011 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 02:48:49,020 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 02:48:49,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 02:48:49,077 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 02:48:49,086 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 02:48:49,086 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 12 [2021-12-22 02:48:49,109 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 02:48:49,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 02:48:49,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 02:48:49,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279949510] [2021-12-22 02:48:49,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279949510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 02:48:49,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 02:48:49,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 02:48:49,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797987841] [2021-12-22 02:48:49,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 02:48:49,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 02:48:49,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 02:48:49,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 02:48:49,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 02:48:49,110 INFO L87 Difference]: Start difference. First operand 3028 states and 3771 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:48:57,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 02:48:57,029 INFO L93 Difference]: Finished difference Result 6006 states and 6937 transitions. [2021-12-22 02:48:57,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 02:48:57,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-22 02:48:57,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 02:48:57,044 INFO L225 Difference]: With dead ends: 6006 [2021-12-22 02:48:57,044 INFO L226 Difference]: Without dead ends: 6006 [2021-12-22 02:48:57,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 02:48:57,048 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 3127 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 4719 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3137 SdHoareTripleChecker+Valid, 3162 SdHoareTripleChecker+Invalid, 4747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-12-22 02:48:57,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3137 Valid, 3162 Invalid, 4747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 4719 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2021-12-22 02:48:57,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6006 states. [2021-12-22 02:48:57,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6006 to 3747. [2021-12-22 02:48:57,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3747 states, 2564 states have (on average 2.0514820592823715) internal successors, (5260), 3722 states have internal predecessors, (5260), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-22 02:48:57,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3747 states to 3747 states and 5310 transitions. [2021-12-22 02:48:57,113 INFO L78 Accepts]: Start accepts. Automaton has 3747 states and 5310 transitions. Word has length 7 [2021-12-22 02:48:57,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 02:48:57,114 INFO L470 AbstractCegarLoop]: Abstraction has 3747 states and 5310 transitions. [2021-12-22 02:48:57,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:48:57,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3747 states and 5310 transitions. [2021-12-22 02:48:57,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 02:48:57,116 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 02:48:57,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 02:48:57,134 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 02:48:57,322 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 02:48:57,323 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-12-22 02:48:57,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 02:48:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2021-12-22 02:48:57,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 02:48:57,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963224572] [2021-12-22 02:48:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 02:48:57,325 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 02:48:57,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 02:48:57,331 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 02:48:57,332 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 02:48:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 02:48:57,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 02:48:57,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 02:48:57,497 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 02:48:57,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 02:48:57,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 02:48:57,509 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 02:48:57,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963224572] [2021-12-22 02:48:57,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963224572] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 02:48:57,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 02:48:57,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 02:48:57,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961124770] [2021-12-22 02:48:57,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 02:48:57,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 02:48:57,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 02:48:57,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 02:48:57,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 02:48:57,511 INFO L87 Difference]: Start difference. First operand 3747 states and 5310 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:49:00,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 02:49:00,119 INFO L93 Difference]: Finished difference Result 4951 states and 6827 transitions. [2021-12-22 02:49:00,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 02:49:00,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-22 02:49:00,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 02:49:00,136 INFO L225 Difference]: With dead ends: 4951 [2021-12-22 02:49:00,136 INFO L226 Difference]: Without dead ends: 4951 [2021-12-22 02:49:00,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 02:49:00,137 INFO L933 BasicCegarLoop]: 2366 mSDtfsCounter, 1998 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 3212 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-22 02:49:00,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2008 Valid, 3212 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-22 02:49:00,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4951 states. [2021-12-22 02:49:00,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4951 to 3656. [2021-12-22 02:49:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3656 states, 2564 states have (on average 1.968408736349454) internal successors, (5047), 3631 states have internal predecessors, (5047), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-22 02:49:00,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 5097 transitions. [2021-12-22 02:49:00,184 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 5097 transitions. Word has length 8 [2021-12-22 02:49:00,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 02:49:00,185 INFO L470 AbstractCegarLoop]: Abstraction has 3656 states and 5097 transitions. [2021-12-22 02:49:00,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:49:00,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 5097 transitions. [2021-12-22 02:49:00,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 02:49:00,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 02:49:00,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 02:49:00,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-22 02:49:00,391 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 02:49:00,392 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-12-22 02:49:00,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 02:49:00,392 INFO L85 PathProgramCache]: Analyzing trace with hash -305791725, now seen corresponding path program 1 times [2021-12-22 02:49:00,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 02:49:00,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877616947] [2021-12-22 02:49:00,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 02:49:00,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 02:49:00,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 02:49:00,394 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 02:49:00,396 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 02:49:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 02:49:00,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 02:49:00,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 02:49:00,568 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 02:49:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 02:49:00,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 02:49:00,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 02:49:00,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877616947] [2021-12-22 02:49:00,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877616947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 02:49:00,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 02:49:00,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 02:49:00,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093286067] [2021-12-22 02:49:00,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 02:49:00,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 02:49:00,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 02:49:00,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 02:49:00,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 02:49:00,588 INFO L87 Difference]: Start difference. First operand 3656 states and 5097 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:49:04,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 02:49:04,328 INFO L93 Difference]: Finished difference Result 5371 states and 7455 transitions. [2021-12-22 02:49:04,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 02:49:04,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-22 02:49:04,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 02:49:04,349 INFO L225 Difference]: With dead ends: 5371 [2021-12-22 02:49:04,349 INFO L226 Difference]: Without dead ends: 5371 [2021-12-22 02:49:04,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 02:49:04,350 INFO L933 BasicCegarLoop]: 2746 mSDtfsCounter, 1369 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 3931 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-22 02:49:04,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1373 Valid, 3931 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-22 02:49:04,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5371 states. [2021-12-22 02:49:04,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5371 to 3978. [2021-12-22 02:49:04,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3978 states, 2896 states have (on average 1.9540745856353592) internal successors, (5659), 3953 states have internal predecessors, (5659), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-22 02:49:04,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 5709 transitions. [2021-12-22 02:49:04,444 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 5709 transitions. Word has length 8 [2021-12-22 02:49:04,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 02:49:04,445 INFO L470 AbstractCegarLoop]: Abstraction has 3978 states and 5709 transitions. [2021-12-22 02:49:04,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:49:04,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 5709 transitions. [2021-12-22 02:49:04,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 02:49:04,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 02:49:04,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 02:49:04,463 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 02:49:04,655 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 02:49:04,655 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-12-22 02:49:04,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 02:49:04,656 INFO L85 PathProgramCache]: Analyzing trace with hash -690352907, now seen corresponding path program 1 times [2021-12-22 02:49:04,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 02:49:04,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373463370] [2021-12-22 02:49:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 02:49:04,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 02:49:04,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 02:49:04,659 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 02:49:04,661 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 02:49:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 02:49:04,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 02:49:04,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 02:49:04,846 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 02:49:04,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 02:49:04,847 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 02:49:04,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373463370] [2021-12-22 02:49:04,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373463370] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 02:49:04,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 02:49:04,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 02:49:04,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230968549] [2021-12-22 02:49:04,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 02:49:04,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 02:49:04,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 02:49:04,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 02:49:04,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 02:49:04,849 INFO L87 Difference]: Start difference. First operand 3978 states and 5709 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:49:04,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 02:49:04,900 INFO L93 Difference]: Finished difference Result 3918 states and 5623 transitions. [2021-12-22 02:49:04,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 02:49:04,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-22 02:49:04,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 02:49:04,915 INFO L225 Difference]: With dead ends: 3918 [2021-12-22 02:49:04,915 INFO L226 Difference]: Without dead ends: 3918 [2021-12-22 02:49:04,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 02:49:04,917 INFO L933 BasicCegarLoop]: 2407 mSDtfsCounter, 1197 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 3623 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 02:49:04,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1201 Valid, 3623 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 02:49:04,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2021-12-22 02:49:04,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 3918. [2021-12-22 02:49:04,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3918 states, 2860 states have (on average 1.9486013986013986) internal successors, (5573), 3893 states have internal predecessors, (5573), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-22 02:49:04,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3918 states to 3918 states and 5623 transitions. [2021-12-22 02:49:04,971 INFO L78 Accepts]: Start accepts. Automaton has 3918 states and 5623 transitions. Word has length 11 [2021-12-22 02:49:04,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 02:49:04,971 INFO L470 AbstractCegarLoop]: Abstraction has 3918 states and 5623 transitions. [2021-12-22 02:49:04,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:49:04,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3918 states and 5623 transitions. [2021-12-22 02:49:04,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 02:49:04,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 02:49:04,972 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 02:49:04,981 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 02:49:05,179 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 02:49:05,180 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-12-22 02:49:05,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 02:49:05,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2004126129, now seen corresponding path program 1 times [2021-12-22 02:49:05,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 02:49:05,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125321575] [2021-12-22 02:49:05,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 02:49:05,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 02:49:05,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 02:49:05,182 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 02:49:05,183 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 02:49:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 02:49:05,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 02:49:05,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 02:49:05,377 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 02:49:05,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 02:49:05,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 02:49:05,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125321575] [2021-12-22 02:49:05,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125321575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 02:49:05,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 02:49:05,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 02:49:05,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086268005] [2021-12-22 02:49:05,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 02:49:05,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 02:49:05,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 02:49:05,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 02:49:05,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 02:49:05,382 INFO L87 Difference]: Start difference. First operand 3918 states and 5623 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:49:05,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 02:49:05,442 INFO L93 Difference]: Finished difference Result 3890 states and 5567 transitions. [2021-12-22 02:49:05,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 02:49:05,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-22 02:49:05,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 02:49:05,447 INFO L225 Difference]: With dead ends: 3890 [2021-12-22 02:49:05,448 INFO L226 Difference]: Without dead ends: 3890 [2021-12-22 02:49:05,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 02:49:05,448 INFO L933 BasicCegarLoop]: 2362 mSDtfsCounter, 1168 mSDsluCounter, 3571 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 5933 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 02:49:05,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1172 Valid, 5933 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 02:49:05,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2021-12-22 02:49:05,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 3888. [2021-12-22 02:49:05,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3888 states, 2844 states have (on average 1.939170182841069) internal successors, (5515), 3863 states have internal predecessors, (5515), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-22 02:49:05,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3888 states to 3888 states and 5565 transitions. [2021-12-22 02:49:05,488 INFO L78 Accepts]: Start accepts. Automaton has 3888 states and 5565 transitions. Word has length 13 [2021-12-22 02:49:05,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 02:49:05,489 INFO L470 AbstractCegarLoop]: Abstraction has 3888 states and 5565 transitions. [2021-12-22 02:49:05,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:49:05,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3888 states and 5565 transitions. [2021-12-22 02:49:05,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-22 02:49:05,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 02:49:05,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 02:49:05,497 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 02:49:05,697 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 02:49:05,698 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-12-22 02:49:05,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 02:49:05,698 INFO L85 PathProgramCache]: Analyzing trace with hash 445820063, now seen corresponding path program 1 times [2021-12-22 02:49:05,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 02:49:05,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525951111] [2021-12-22 02:49:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 02:49:05,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 02:49:05,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 02:49:05,700 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 02:49:05,702 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 02:49:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 02:49:05,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 02:49:05,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 02:49:05,917 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 02:49:05,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 02:49:05,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 02:49:05,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525951111] [2021-12-22 02:49:05,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525951111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 02:49:05,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 02:49:05,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 02:49:05,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367980995] [2021-12-22 02:49:05,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 02:49:05,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 02:49:05,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 02:49:05,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 02:49:05,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 02:49:05,919 INFO L87 Difference]: Start difference. First operand 3888 states and 5565 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:49:05,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 02:49:05,980 INFO L93 Difference]: Finished difference Result 5514 states and 7318 transitions. [2021-12-22 02:49:05,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 02:49:05,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-22 02:49:05,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 02:49:05,989 INFO L225 Difference]: With dead ends: 5514 [2021-12-22 02:49:05,990 INFO L226 Difference]: Without dead ends: 5514 [2021-12-22 02:49:05,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 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 02:49:05,991 INFO L933 BasicCegarLoop]: 4091 mSDtfsCounter, 2288 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2298 SdHoareTripleChecker+Valid, 5893 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 02:49:05,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2298 Valid, 5893 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 02:49:05,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5514 states. [2021-12-22 02:49:06,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5514 to 3828. [2021-12-22 02:49:06,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 2808 states have (on average 1.9334045584045585) internal successors, (5429), 3803 states have internal predecessors, (5429), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-22 02:49:06,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 5479 transitions. [2021-12-22 02:49:06,054 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 5479 transitions. Word has length 20 [2021-12-22 02:49:06,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 02:49:06,055 INFO L470 AbstractCegarLoop]: Abstraction has 3828 states and 5479 transitions. [2021-12-22 02:49:06,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:49:06,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 5479 transitions. [2021-12-22 02:49:06,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-22 02:49:06,056 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 02:49:06,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 02:49:06,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-22 02:49:06,264 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 02:49:06,264 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-12-22 02:49:06,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 02:49:06,265 INFO L85 PathProgramCache]: Analyzing trace with hash 591123743, now seen corresponding path program 1 times [2021-12-22 02:49:06,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 02:49:06,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819530026] [2021-12-22 02:49:06,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 02:49:06,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 02:49:06,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 02:49:06,267 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 02:49:06,268 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 02:49:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 02:49:06,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 02:49:06,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 02:49:06,485 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 02:49:06,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 02:49:06,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 02:49:06,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819530026] [2021-12-22 02:49:06,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819530026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 02:49:06,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 02:49:06,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 02:49:06,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733633534] [2021-12-22 02:49:06,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 02:49:06,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 02:49:06,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 02:49:06,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 02:49:06,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 02:49:06,487 INFO L87 Difference]: Start difference. First operand 3828 states and 5479 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:49:06,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 02:49:06,523 INFO L93 Difference]: Finished difference Result 5347 states and 7027 transitions. [2021-12-22 02:49:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 02:49:06,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-22 02:49:06,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 02:49:06,530 INFO L225 Difference]: With dead ends: 5347 [2021-12-22 02:49:06,531 INFO L226 Difference]: Without dead ends: 5347 [2021-12-22 02:49:06,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 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 02:49:06,531 INFO L933 BasicCegarLoop]: 3778 mSDtfsCounter, 2245 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2255 SdHoareTripleChecker+Valid, 5532 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 02:49:06,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2255 Valid, 5532 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 02:49:06,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5347 states. [2021-12-22 02:49:06,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5347 to 3696. [2021-12-22 02:49:06,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 2700 states have (on average 1.915185185185185) internal successors, (5171), 3671 states have internal predecessors, (5171), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-22 02:49:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 5221 transitions. [2021-12-22 02:49:06,573 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 5221 transitions. Word has length 20 [2021-12-22 02:49:06,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 02:49:06,574 INFO L470 AbstractCegarLoop]: Abstraction has 3696 states and 5221 transitions. [2021-12-22 02:49:06,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:49:06,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 5221 transitions. [2021-12-22 02:49:06,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 02:49:06,575 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 02:49:06,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 02:49:06,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-22 02:49:06,783 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 02:49:06,783 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-12-22 02:49:06,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 02:49:06,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1063651591, now seen corresponding path program 1 times [2021-12-22 02:49:06,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 02:49:06,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744225812] [2021-12-22 02:49:06,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 02:49:06,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 02:49:06,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 02:49:06,786 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 02:49:06,787 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 02:49:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 02:49:06,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 02:49:06,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 02:49:07,023 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 02:49:07,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 02:49:07,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 02:49:07,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744225812] [2021-12-22 02:49:07,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744225812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 02:49:07,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 02:49:07,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 02:49:07,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893825544] [2021-12-22 02:49:07,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 02:49:07,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 02:49:07,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 02:49:07,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 02:49:07,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 02:49:07,025 INFO L87 Difference]: Start difference. First operand 3696 states and 5221 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 02:49:07,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 02:49:07,108 INFO L93 Difference]: Finished difference Result 5312 states and 6961 transitions. [2021-12-22 02:49:07,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 02:49:07,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2021-12-22 02:49:07,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 02:49:07,143 INFO L225 Difference]: With dead ends: 5312 [2021-12-22 02:49:07,144 INFO L226 Difference]: Without dead ends: 5312 [2021-12-22 02:49:07,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 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 02:49:07,144 INFO L933 BasicCegarLoop]: 3960 mSDtfsCounter, 2216 mSDsluCounter, 5712 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2226 SdHoareTripleChecker+Valid, 9672 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 02:49:07,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2226 Valid, 9672 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 02:49:07,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5312 states. [2021-12-22 02:49:07,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5312 to 3666. [2021-12-22 02:49:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 2684 states have (on average 1.9049925484351713) internal successors, (5113), 3641 states have internal predecessors, (5113), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-22 02:49:07,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 5163 transitions. [2021-12-22 02:49:07,212 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 5163 transitions. Word has length 22 [2021-12-22 02:49:07,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 02:49:07,212 INFO L470 AbstractCegarLoop]: Abstraction has 3666 states and 5163 transitions. [2021-12-22 02:49:07,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 02:49:07,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 5163 transitions. [2021-12-22 02:49:07,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 02:49:07,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 02:49:07,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 02:49:07,223 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 02:49:07,423 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 02:49:07,423 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-12-22 02:49:07,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 02:49:07,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1134259450, now seen corresponding path program 1 times [2021-12-22 02:49:07,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 02:49:07,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587633336] [2021-12-22 02:49:07,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 02:49:07,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 02:49:07,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 02:49:07,425 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 02:49:07,426 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 02:49:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 02:49:07,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 02:49:07,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 02:49:07,659 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 02:49:07,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 02:49:07,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 02:49:07,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587633336] [2021-12-22 02:49:07,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587633336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 02:49:07,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 02:49:07,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 02:49:07,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215520756] [2021-12-22 02:49:07,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 02:49:07,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 02:49:07,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 02:49:07,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 02:49:07,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 02:49:07,661 INFO L87 Difference]: Start difference. First operand 3666 states and 5163 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 02:49:07,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 02:49:07,730 INFO L93 Difference]: Finished difference Result 5239 states and 6772 transitions. [2021-12-22 02:49:07,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 02:49:07,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2021-12-22 02:49:07,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 02:49:07,740 INFO L225 Difference]: With dead ends: 5239 [2021-12-22 02:49:07,740 INFO L226 Difference]: Without dead ends: 5239 [2021-12-22 02:49:07,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 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 02:49:07,740 INFO L933 BasicCegarLoop]: 3885 mSDtfsCounter, 2181 mSDsluCounter, 5597 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2191 SdHoareTripleChecker+Valid, 9482 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 02:49:07,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2191 Valid, 9482 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 02:49:07,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5239 states. [2021-12-22 02:49:07,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5239 to 3604. [2021-12-22 02:49:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3604 states, 2636 states have (on average 1.8736722306525038) internal successors, (4939), 3579 states have internal predecessors, (4939), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-22 02:49:07,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3604 states to 3604 states and 4989 transitions. [2021-12-22 02:49:07,776 INFO L78 Accepts]: Start accepts. Automaton has 3604 states and 4989 transitions. Word has length 22 [2021-12-22 02:49:07,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 02:49:07,777 INFO L470 AbstractCegarLoop]: Abstraction has 3604 states and 4989 transitions. [2021-12-22 02:49:07,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 02:49:07,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3604 states and 4989 transitions. [2021-12-22 02:49:07,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 02:49:07,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 02:49:07,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 02:49:07,786 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 02:49:07,986 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 02:49:07,987 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-12-22 02:49:07,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 02:49:07,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519613, now seen corresponding path program 1 times [2021-12-22 02:49:07,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 02:49:07,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837177222] [2021-12-22 02:49:07,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 02:49:07,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 02:49:07,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 02:49:07,989 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 02:49:07,990 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 02:49:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 02:49:08,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 02:49:08,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 02:49:08,184 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 02:49:08,256 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 02:49:08,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 02:49:08,256 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 02:49:08,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837177222] [2021-12-22 02:49:08,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837177222] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 02:49:08,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 02:49:08,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 02:49:08,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508928593] [2021-12-22 02:49:08,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 02:49:08,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 02:49:08,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 02:49:08,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 02:49:08,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 02:49:08,257 INFO L87 Difference]: Start difference. First operand 3604 states and 4989 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:49:11,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 02:49:11,529 INFO L93 Difference]: Finished difference Result 4225 states and 5525 transitions. [2021-12-22 02:49:11,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 02:49:11,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-22 02:49:11,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 02:49:11,534 INFO L225 Difference]: With dead ends: 4225 [2021-12-22 02:49:11,534 INFO L226 Difference]: Without dead ends: 4225 [2021-12-22 02:49:11,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 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 02:49:11,535 INFO L933 BasicCegarLoop]: 1515 mSDtfsCounter, 3097 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 2082 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3103 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-22 02:49:11,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3103 Valid, 2793 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2082 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-22 02:49:11,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4225 states. [2021-12-22 02:49:11,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4225 to 3600. [2021-12-22 02:49:11,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3600 states, 2636 states have (on average 1.8706373292867982) internal successors, (4931), 3575 states have internal predecessors, (4931), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-22 02:49:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 4981 transitions. [2021-12-22 02:49:11,564 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 4981 transitions. Word has length 27 [2021-12-22 02:49:11,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 02:49:11,564 INFO L470 AbstractCegarLoop]: Abstraction has 3600 states and 4981 transitions. [2021-12-22 02:49:11,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:49:11,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 4981 transitions. [2021-12-22 02:49:11,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 02:49:11,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 02:49:11,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 02:49:11,572 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 02:49:11,771 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 02:49:11,772 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-12-22 02:49:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 02:49:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519614, now seen corresponding path program 1 times [2021-12-22 02:49:11,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 02:49:11,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887278222] [2021-12-22 02:49:11,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 02:49:11,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 02:49:11,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 02:49:11,774 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 02:49:11,775 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 02:49:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 02:49:11,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 02:49:11,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 02:49:11,984 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 02:49:12,131 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 02:49:12,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 02:49:12,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 02:49:12,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887278222] [2021-12-22 02:49:12,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887278222] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 02:49:12,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 02:49:12,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 02:49:12,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634926564] [2021-12-22 02:49:12,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 02:49:12,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 02:49:12,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 02:49:12,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 02:49:12,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 02:49:12,132 INFO L87 Difference]: Start difference. First operand 3600 states and 4981 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:49:16,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 02:49:16,944 INFO L93 Difference]: Finished difference Result 4679 states and 6151 transitions. [2021-12-22 02:49:16,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 02:49:16,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-22 02:49:16,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 02:49:16,951 INFO L225 Difference]: With dead ends: 4679 [2021-12-22 02:49:16,951 INFO L226 Difference]: Without dead ends: 4679 [2021-12-22 02:49:16,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 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 02:49:16,951 INFO L933 BasicCegarLoop]: 1748 mSDtfsCounter, 2279 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 2575 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2279 SdHoareTripleChecker+Valid, 4099 SdHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-22 02:49:16,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2279 Valid, 4099 Invalid, 2587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2575 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-22 02:49:16,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4679 states. [2021-12-22 02:49:16,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4679 to 3636. [2021-12-22 02:49:16,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3636 states, 2672 states have (on average 1.8607784431137724) internal successors, (4972), 3611 states have internal predecessors, (4972), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-22 02:49:16,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 5022 transitions. [2021-12-22 02:49:16,985 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 5022 transitions. Word has length 27 [2021-12-22 02:49:16,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 02:49:16,985 INFO L470 AbstractCegarLoop]: Abstraction has 3636 states and 5022 transitions. [2021-12-22 02:49:16,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 02:49:16,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 5022 transitions. [2021-12-22 02:49:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-22 02:49:16,986 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 02:49:16,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 02:49:16,995 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 02:49:17,193 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 02:49:17,194 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-12-22 02:49:17,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 02:49:17,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128551, now seen corresponding path program 1 times [2021-12-22 02:49:17,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 02:49:17,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930055817] [2021-12-22 02:49:17,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 02:49:17,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 02:49:17,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 02:49:17,196 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 02:49:17,198 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 02:49:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 02:49:17,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 02:49:17,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 02:49:17,428 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 02:49:17,491 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 02:49:17,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 02:49:17,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 02:49:17,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930055817] [2021-12-22 02:49:17,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930055817] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 02:49:17,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 02:49:17,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 02:49:17,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226123080] [2021-12-22 02:49:17,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 02:49:17,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 02:49:17,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 02:49:17,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 02:49:17,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 02:49:17,493 INFO L87 Difference]: Start difference. First operand 3636 states and 5022 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 02:49:22,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 02:49:22,049 INFO L93 Difference]: Finished difference Result 7033 states and 9556 transitions. [2021-12-22 02:49:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 02:49:22,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2021-12-22 02:49:22,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 02:49:22,057 INFO L225 Difference]: With dead ends: 7033 [2021-12-22 02:49:22,057 INFO L226 Difference]: Without dead ends: 7033 [2021-12-22 02:49:22,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 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 02:49:22,058 INFO L933 BasicCegarLoop]: 2580 mSDtfsCounter, 4500 mSDsluCounter, 2398 mSDsCounter, 0 mSdLazyCounter, 3079 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4507 SdHoareTripleChecker+Valid, 4978 SdHoareTripleChecker+Invalid, 3122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-22 02:49:22,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4507 Valid, 4978 Invalid, 3122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3079 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-22 02:49:22,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7033 states. [2021-12-22 02:49:22,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7033 to 3632. [2021-12-22 02:49:22,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3632 states, 2672 states have (on average 1.8577844311377245) internal successors, (4964), 3607 states have internal predecessors, (4964), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-22 02:49:22,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3632 states to 3632 states and 5014 transitions. [2021-12-22 02:49:22,104 INFO L78 Accepts]: Start accepts. Automaton has 3632 states and 5014 transitions. Word has length 36 [2021-12-22 02:49:22,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 02:49:22,104 INFO L470 AbstractCegarLoop]: Abstraction has 3632 states and 5014 transitions. [2021-12-22 02:49:22,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 02:49:22,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3632 states and 5014 transitions. [2021-12-22 02:49:22,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-22 02:49:22,105 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 02:49:22,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 02:49:22,115 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 02:49:22,313 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 02:49:22,314 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-12-22 02:49:22,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 02:49:22,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128552, now seen corresponding path program 1 times [2021-12-22 02:49:22,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 02:49:22,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145115749] [2021-12-22 02:49:22,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 02:49:22,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 02:49:22,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 02:49:22,316 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 02:49:22,354 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 02:49:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 02:49:22,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 02:49:22,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 02:49:22,537 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 02:49:22,679 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 02:49:22,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 02:49:22,680 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 02:49:22,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145115749] [2021-12-22 02:49:22,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145115749] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 02:49:22,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 02:49:22,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 02:49:22,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166676293] [2021-12-22 02:49:22,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 02:49:22,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 02:49:22,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 02:49:22,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 02:49:22,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 02:49:22,681 INFO L87 Difference]: Start difference. First operand 3632 states and 5014 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 02:49:28,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 02:49:28,898 INFO L93 Difference]: Finished difference Result 6725 states and 8957 transitions. [2021-12-22 02:49:28,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 02:49:28,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2021-12-22 02:49:28,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 02:49:28,904 INFO L225 Difference]: With dead ends: 6725 [2021-12-22 02:49:28,904 INFO L226 Difference]: Without dead ends: 6725 [2021-12-22 02:49:28,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 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 02:49:28,905 INFO L933 BasicCegarLoop]: 2937 mSDtfsCounter, 3252 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 3320 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3256 SdHoareTripleChecker+Valid, 5833 SdHoareTripleChecker+Invalid, 3332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-12-22 02:49:28,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3256 Valid, 5833 Invalid, 3332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3320 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-12-22 02:49:28,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6725 states. [2021-12-22 02:49:28,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6725 to 3628. [2021-12-22 02:49:28,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 2672 states have (on average 1.8547904191616766) internal successors, (4956), 3603 states have internal predecessors, (4956), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-22 02:49:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 5006 transitions. [2021-12-22 02:49:28,987 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 5006 transitions. Word has length 36 [2021-12-22 02:49:28,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 02:49:28,988 INFO L470 AbstractCegarLoop]: Abstraction has 3628 states and 5006 transitions. [2021-12-22 02:49:28,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 02:49:28,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 5006 transitions. [2021-12-22 02:49:28,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-22 02:49:28,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 02:49:28,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 02:49:29,009 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 02:49:29,198 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 02:49:29,198 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-12-22 02:49:29,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 02:49:29,199 INFO L85 PathProgramCache]: Analyzing trace with hash -526454297, now seen corresponding path program 1 times [2021-12-22 02:49:29,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 02:49:29,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420741198] [2021-12-22 02:49:29,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 02:49:29,199 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 02:49:29,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 02:49:29,220 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 02:49:29,222 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 02:49:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 02:49:29,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 02:49:29,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 02:49:29,432 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 02:49:29,486 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 02:49:29,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 02:49:29,487 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 02:49:29,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420741198] [2021-12-22 02:49:29,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420741198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 02:49:29,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 02:49:29,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 02:49:29,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830704445] [2021-12-22 02:49:29,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 02:49:29,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 02:49:29,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 02:49:29,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 02:49:29,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 02:49:29,489 INFO L87 Difference]: Start difference. First operand 3628 states and 5006 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 02:49:34,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 02:49:34,082 INFO L93 Difference]: Finished difference Result 7477 states and 10068 transitions. [2021-12-22 02:49:34,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 02:49:34,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2021-12-22 02:49:34,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 02:49:34,089 INFO L225 Difference]: With dead ends: 7477 [2021-12-22 02:49:34,089 INFO L226 Difference]: Without dead ends: 7477 [2021-12-22 02:49:34,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 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 02:49:34,089 INFO L933 BasicCegarLoop]: 2542 mSDtfsCounter, 4861 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 3342 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4871 SdHoareTripleChecker+Valid, 5133 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-22 02:49:34,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4871 Valid, 5133 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 3342 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-12-22 02:49:34,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7477 states. [2021-12-22 02:49:34,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7477 to 3625. [2021-12-22 02:49:34,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3625 states, 2672 states have (on average 1.846556886227545) internal successors, (4934), 3600 states have internal predecessors, (4934), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-22 02:49:34,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 4984 transitions. [2021-12-22 02:49:34,126 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 4984 transitions. Word has length 36 [2021-12-22 02:49:34,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 02:49:34,126 INFO L470 AbstractCegarLoop]: Abstraction has 3625 states and 4984 transitions. [2021-12-22 02:49:34,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 02:49:34,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 4984 transitions. [2021-12-22 02:49:34,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-22 02:49:34,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 02:49:34,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 02:49:34,135 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 02:49:34,335 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 02:49:34,335 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-12-22 02:49:34,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 02:49:34,336 INFO L85 PathProgramCache]: Analyzing trace with hash -526454296, now seen corresponding path program 1 times [2021-12-22 02:49:34,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 02:49:34,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100109357] [2021-12-22 02:49:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 02:49:34,336 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 02:49:34,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 02:49:34,337 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 02:49:34,339 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 02:49:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 02:49:34,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 02:49:34,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 02:49:34,547 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 02:49:34,686 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 02:49:34,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 02:49:34,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 02:49:34,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100109357] [2021-12-22 02:49:34,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100109357] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 02:49:34,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 02:49:34,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 02:49:34,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860937390] [2021-12-22 02:49:34,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 02:49:34,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 02:49:34,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 02:49:34,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 02:49:34,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 02:49:34,688 INFO L87 Difference]: Start difference. First operand 3625 states and 4984 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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)