./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.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 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 08:56:40,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 08:56:40,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 08:56:40,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 08:56:40,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 08:56:40,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 08:56:40,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 08:56:40,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 08:56:40,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 08:56:40,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 08:56:40,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 08:56:40,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 08:56:40,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 08:56:40,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 08:56:40,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 08:56:40,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 08:56:40,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 08:56:40,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 08:56:40,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 08:56:40,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 08:56:40,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 08:56:40,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 08:56:40,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 08:56:40,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 08:56:40,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 08:56:40,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 08:56:40,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 08:56:40,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 08:56:40,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 08:56:40,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 08:56:40,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 08:56:40,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 08:56:40,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 08:56:40,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 08:56:40,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 08:56:40,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 08:56:40,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 08:56:40,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 08:56:40,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 08:56:40,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 08:56:40,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 08:56:40,686 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-16 08:56:40,702 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 08:56:40,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 08:56:40,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 08:56:40,702 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 08:56:40,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 08:56:40,703 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 08:56:40,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 08:56:40,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 08:56:40,704 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 08:56:40,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 08:56:40,705 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 08:56:40,705 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 08:56:40,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 08:56:40,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 08:56:40,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 08:56:40,705 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 08:56:40,705 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 08:56:40,706 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 08:56:40,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 08:56:40,706 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 08:56:40,706 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 08:56:40,706 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 08:56:40,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 08:56:40,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 08:56:40,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 08:56:40,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 08:56:40,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 08:56:40,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 08:56:40,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 08:56:40,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 08:56:40,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 08:56:40,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc [2021-12-16 08:56:40,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 08:56:40,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 08:56:40,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 08:56:40,927 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 08:56:40,928 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 08:56:40,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2021-12-16 08:56:41,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ee2a7db7/a1b1177e7b7f4266b07fc242d48134dc/FLAG566c624f3 [2021-12-16 08:56:41,476 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 08:56:41,477 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2021-12-16 08:56:41,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ee2a7db7/a1b1177e7b7f4266b07fc242d48134dc/FLAG566c624f3 [2021-12-16 08:56:41,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ee2a7db7/a1b1177e7b7f4266b07fc242d48134dc [2021-12-16 08:56:42,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 08:56:42,002 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 08:56:42,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 08:56:42,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 08:56:42,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 08:56:42,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:56:42" (1/1) ... [2021-12-16 08:56:42,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b7d9a55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:56:42, skipping insertion in model container [2021-12-16 08:56:42,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:56:42" (1/1) ... [2021-12-16 08:56:42,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 08:56:42,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 08:56:42,316 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_SFH_test7-2.i[33021,33034] [2021-12-16 08:56:42,390 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_SFH_test7-2.i[44124,44137] [2021-12-16 08:56:42,392 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_SFH_test7-2.i[44245,44258] [2021-12-16 08:56:42,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:56:42,412 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-16 08:56:42,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@8ad610b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:56:42, skipping insertion in model container [2021-12-16 08:56:42,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 08:56:42,413 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-16 08:56:42,414 INFO L158 Benchmark]: Toolchain (without parser) took 411.78ms. Allocated memory was 88.1MB in the beginning and 123.7MB in the end (delta: 35.7MB). Free memory was 49.2MB in the beginning and 89.8MB in the end (delta: -40.6MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2021-12-16 08:56:42,414 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 88.1MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 08:56:42,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 409.55ms. Allocated memory was 88.1MB in the beginning and 123.7MB in the end (delta: 35.7MB). Free memory was 49.1MB in the beginning and 89.8MB in the end (delta: -40.8MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2021-12-16 08:56:42,426 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 88.1MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 409.55ms. Allocated memory was 88.1MB in the beginning and 123.7MB in the end (delta: 35.7MB). Free memory was 49.1MB in the beginning and 89.8MB in the end (delta: -40.8MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_SFH_test7-2.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 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 08:56:43,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 08:56:43,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 08:56:43,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 08:56:43,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 08:56:43,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 08:56:43,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 08:56:43,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 08:56:43,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 08:56:43,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 08:56:43,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 08:56:43,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 08:56:43,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 08:56:43,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 08:56:43,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 08:56:43,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 08:56:43,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 08:56:43,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 08:56:43,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 08:56:43,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 08:56:43,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 08:56:43,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 08:56:43,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 08:56:43,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 08:56:43,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 08:56:43,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 08:56:43,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 08:56:43,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 08:56:43,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 08:56:43,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 08:56:43,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 08:56:43,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 08:56:43,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 08:56:43,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 08:56:43,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 08:56:43,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 08:56:43,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 08:56:43,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 08:56:43,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 08:56:43,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 08:56:43,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 08:56:43,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-16 08:56:43,970 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 08:56:43,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 08:56:43,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 08:56:43,972 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 08:56:43,972 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 08:56:43,972 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 08:56:43,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 08:56:43,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 08:56:43,974 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 08:56:43,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 08:56:43,974 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 08:56:43,974 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 08:56:43,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 08:56:43,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 08:56:43,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 08:56:43,975 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 08:56:43,975 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 08:56:43,975 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 08:56:43,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 08:56:43,976 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 08:56:43,976 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 08:56:43,976 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 08:56:43,976 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 08:56:43,976 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 08:56:43,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 08:56:43,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 08:56:43,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 08:56:43,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 08:56:43,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 08:56:43,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 08:56:43,987 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 08:56:43,988 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 08:56:43,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 08:56:43,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 08:56:43,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc [2021-12-16 08:56:44,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 08:56:44,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 08:56:44,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 08:56:44,265 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 08:56:44,266 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 08:56:44,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2021-12-16 08:56:44,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f392bae3/a47dbb9e4773466ea8239b8d355f8645/FLAGffa08d6c9 [2021-12-16 08:56:44,791 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 08:56:44,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2021-12-16 08:56:44,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f392bae3/a47dbb9e4773466ea8239b8d355f8645/FLAGffa08d6c9 [2021-12-16 08:56:45,294 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f392bae3/a47dbb9e4773466ea8239b8d355f8645 [2021-12-16 08:56:45,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 08:56:45,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 08:56:45,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 08:56:45,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 08:56:45,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 08:56:45,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:56:45" (1/1) ... [2021-12-16 08:56:45,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed25e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:56:45, skipping insertion in model container [2021-12-16 08:56:45,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:56:45" (1/1) ... [2021-12-16 08:56:45,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 08:56:45,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 08:56:45,608 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_SFH_test7-2.i[33021,33034] [2021-12-16 08:56:45,706 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_SFH_test7-2.i[44124,44137] [2021-12-16 08:56:45,707 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_SFH_test7-2.i[44245,44258] [2021-12-16 08:56:45,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:56:45,725 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-16 08:56:45,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 08:56:45,765 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_SFH_test7-2.i[33021,33034] [2021-12-16 08:56:45,810 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_SFH_test7-2.i[44124,44137] [2021-12-16 08:56:45,810 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_SFH_test7-2.i[44245,44258] [2021-12-16 08:56:45,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:56:45,821 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 08:56:45,842 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_SFH_test7-2.i[33021,33034] [2021-12-16 08:56:45,873 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2021-12-16 08:56:45,879 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_SFH_test7-2.i[44245,44258] [2021-12-16 08:56:45,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:56:45,941 INFO L208 MainTranslator]: Completed translation [2021-12-16 08:56:45,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:56:45 WrapperNode [2021-12-16 08:56:45,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 08:56:45,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 08:56:45,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 08:56:45,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 08:56:45,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:56:45" (1/1) ... [2021-12-16 08:56:45,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:56:45" (1/1) ... [2021-12-16 08:56:46,024 INFO L137 Inliner]: procedures = 179, calls = 328, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1175 [2021-12-16 08:56:46,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 08:56:46,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 08:56:46,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 08:56:46,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 08:56:46,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:56:45" (1/1) ... [2021-12-16 08:56:46,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:56:45" (1/1) ... [2021-12-16 08:56:46,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:56:45" (1/1) ... [2021-12-16 08:56:46,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:56:45" (1/1) ... [2021-12-16 08:56:46,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:56:45" (1/1) ... [2021-12-16 08:56:46,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:56:45" (1/1) ... [2021-12-16 08:56:46,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:56:45" (1/1) ... [2021-12-16 08:56:46,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 08:56:46,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 08:56:46,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 08:56:46,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 08:56:46,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:56:45" (1/1) ... [2021-12-16 08:56:46,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 08:56:46,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 08:56:46,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 08:56:46,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 08:56:46,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-16 08:56:46,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-16 08:56:46,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 08:56:46,186 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 08:56:46,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 08:56:46,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 08:56:46,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 08:56:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 08:56:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-16 08:56:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 08:56:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 08:56:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-16 08:56:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 08:56:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 08:56:46,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 08:56:46,407 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 08:56:46,416 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 08:56:46,419 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 08:56:49,633 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 08:56:49,644 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 08:56:49,644 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-12-16 08:56:49,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:56:49 BoogieIcfgContainer [2021-12-16 08:56:49,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 08:56:49,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 08:56:49,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 08:56:49,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 08:56:49,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 08:56:45" (1/3) ... [2021-12-16 08:56:49,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c85fbd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:56:49, skipping insertion in model container [2021-12-16 08:56:49,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:56:45" (2/3) ... [2021-12-16 08:56:49,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c85fbd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:56:49, skipping insertion in model container [2021-12-16 08:56:49,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:56:49" (3/3) ... [2021-12-16 08:56:49,652 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test7-2.i [2021-12-16 08:56:49,657 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 08:56:49,658 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 635 error locations. [2021-12-16 08:56:49,685 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 08:56:49,693 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 08:56:49,693 INFO L340 AbstractCegarLoop]: Starting to check reachability of 635 error locations. [2021-12-16 08:56:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 1249 states, 612 states have (on average 2.2663398692810457) internal successors, (1387), 1244 states have internal predecessors, (1387), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:56:49,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-16 08:56:49,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:56:49,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-16 08:56:49,735 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:56:49,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:56:49,739 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-12-16 08:56:49,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:56:49,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568560097] [2021-12-16 08:56:49,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:56:49,747 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:56:49,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:56:49,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:56:49,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 08:56:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:56:49,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:56:49,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:56:49,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:56:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:56:49,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:56:49,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:56:49,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568560097] [2021-12-16 08:56:49,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568560097] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:56:49,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:56:49,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:56:49,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235815608] [2021-12-16 08:56:49,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:56:49,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:56:49,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:56:49,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:56:49,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:56:49,965 INFO L87 Difference]: Start difference. First operand has 1249 states, 612 states have (on average 2.2663398692810457) internal successors, (1387), 1244 states have internal predecessors, (1387), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:56:51,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:56:51,545 INFO L93 Difference]: Finished difference Result 1417 states and 1492 transitions. [2021-12-16 08:56:51,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:56:51,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-16 08:56:51,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:56:51,561 INFO L225 Difference]: With dead ends: 1417 [2021-12-16 08:56:51,561 INFO L226 Difference]: Without dead ends: 1415 [2021-12-16 08:56:51,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:56:51,565 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 1160 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 08:56:51,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 893 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 08:56:51,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-12-16 08:56:51,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1230. [2021-12-16 08:56:51,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 610 states have (on average 2.1163934426229507) internal successors, (1291), 1225 states have internal predecessors, (1291), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:56:51,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1297 transitions. [2021-12-16 08:56:51,646 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1297 transitions. Word has length 3 [2021-12-16 08:56:51,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:56:51,646 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1297 transitions. [2021-12-16 08:56:51,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:56:51,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1297 transitions. [2021-12-16 08:56:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-16 08:56:51,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:56:51,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-16 08:56:51,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-16 08:56:51,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:56:51,854 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:56:51,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:56:51,854 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-12-16 08:56:51,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:56:51,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933882621] [2021-12-16 08:56:51,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:56:51,855 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:56:51,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:56:51,858 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:56:51,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-16 08:56:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:56:51,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:56:51,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:56:51,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:56:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:56:51,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:56:51,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:56:51,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933882621] [2021-12-16 08:56:51,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933882621] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:56:51,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:56:51,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:56:51,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381096348] [2021-12-16 08:56:51,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:56:51,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:56:51,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:56:51,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:56:51,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:56:51,998 INFO L87 Difference]: Start difference. First operand 1230 states and 1297 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:56:54,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:56:54,360 INFO L93 Difference]: Finished difference Result 1819 states and 1926 transitions. [2021-12-16 08:56:54,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:56:54,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-16 08:56:54,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:56:54,366 INFO L225 Difference]: With dead ends: 1819 [2021-12-16 08:56:54,366 INFO L226 Difference]: Without dead ends: 1819 [2021-12-16 08:56:54,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:56:54,367 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 629 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-16 08:56:54,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 1690 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-16 08:56:54,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2021-12-16 08:56:54,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1431. [2021-12-16 08:56:54,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 812 states have (on average 2.0985221674876846) internal successors, (1704), 1426 states have internal predecessors, (1704), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:56:54,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1710 transitions. [2021-12-16 08:56:54,393 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1710 transitions. Word has length 3 [2021-12-16 08:56:54,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:56:54,393 INFO L470 AbstractCegarLoop]: Abstraction has 1431 states and 1710 transitions. [2021-12-16 08:56:54,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:56:54,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1710 transitions. [2021-12-16 08:56:54,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 08:56:54,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:56:54,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:56:54,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-16 08:56:54,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:56:54,601 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:56:54,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:56:54,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2021-12-16 08:56:54,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:56:54,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209995251] [2021-12-16 08:56:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:56:54,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:56:54,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:56:54,604 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:56:54,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-16 08:56:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:56:54,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 08:56:54,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:56:54,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:56:54,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:56:54,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 08:56:54,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-16 08:56:54,820 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 08:56:54,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-16 08:56:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:56:54,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:56:54,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:56:54,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209995251] [2021-12-16 08:56:54,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209995251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:56:54,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:56:54,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:56:54,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543106994] [2021-12-16 08:56:54,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:56:54,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:56:54,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:56:54,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:56:54,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:56:54,843 INFO L87 Difference]: Start difference. First operand 1431 states and 1710 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:56:57,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:56:57,131 INFO L93 Difference]: Finished difference Result 1609 states and 1899 transitions. [2021-12-16 08:56:57,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:56:57,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-16 08:56:57,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:56:57,136 INFO L225 Difference]: With dead ends: 1609 [2021-12-16 08:56:57,136 INFO L226 Difference]: Without dead ends: 1609 [2021-12-16 08:56:57,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:56:57,139 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 1450 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-16 08:56:57,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1453 Valid, 507 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-16 08:56:57,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2021-12-16 08:56:57,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1219. [2021-12-16 08:56:57,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 610 states have (on average 2.09672131147541) internal successors, (1279), 1214 states have internal predecessors, (1279), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:56:57,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1285 transitions. [2021-12-16 08:56:57,160 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1285 transitions. Word has length 7 [2021-12-16 08:56:57,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:56:57,160 INFO L470 AbstractCegarLoop]: Abstraction has 1219 states and 1285 transitions. [2021-12-16 08:56:57,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:56:57,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1285 transitions. [2021-12-16 08:56:57,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 08:56:57,161 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:56:57,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:56:57,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-16 08:56:57,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:56:57,375 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:56:57,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:56:57,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-12-16 08:56:57,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:56:57,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096641105] [2021-12-16 08:56:57,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:56:57,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:56:57,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:56:57,378 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:56:57,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-16 08:56:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:56:57,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:56:57,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:56:57,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:56:57,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:56:57,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:56:57,506 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:56:57,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096641105] [2021-12-16 08:56:57,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096641105] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:56:57,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:56:57,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:56:57,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166308065] [2021-12-16 08:56:57,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:56:57,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:56:57,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:56:57,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:56:57,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:56:57,509 INFO L87 Difference]: Start difference. First operand 1219 states and 1285 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:56:58,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:56:58,960 INFO L93 Difference]: Finished difference Result 1548 states and 1643 transitions. [2021-12-16 08:56:58,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:56:58,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-16 08:56:58,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:56:58,966 INFO L225 Difference]: With dead ends: 1548 [2021-12-16 08:56:58,966 INFO L226 Difference]: Without dead ends: 1548 [2021-12-16 08:56:58,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:56:58,967 INFO L933 BasicCegarLoop]: 1133 mSDtfsCounter, 973 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 08:56:58,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 1476 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 08:56:58,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-12-16 08:56:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1172. [2021-12-16 08:56:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 610 states have (on average 2.019672131147541) internal successors, (1232), 1167 states have internal predecessors, (1232), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:56:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1238 transitions. [2021-12-16 08:56:58,989 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1238 transitions. Word has length 8 [2021-12-16 08:56:58,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:56:58,989 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1238 transitions. [2021-12-16 08:56:58,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:56:58,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1238 transitions. [2021-12-16 08:56:58,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 08:56:58,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:56:58,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:56:59,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-16 08:56:59,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:56:59,197 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:56:59,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:56:59,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-12-16 08:56:59,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:56:59,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044071538] [2021-12-16 08:56:59,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:56:59,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:56:59,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:56:59,199 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:56:59,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-16 08:56:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:56:59,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:56:59,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:56:59,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:56:59,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:56:59,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:56:59,335 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:56:59,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044071538] [2021-12-16 08:56:59,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044071538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:56:59,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:56:59,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:56:59,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739998229] [2021-12-16 08:56:59,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:56:59,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:56:59,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:56:59,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:56:59,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:56:59,337 INFO L87 Difference]: Start difference. First operand 1172 states and 1238 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:01,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:01,311 INFO L93 Difference]: Finished difference Result 1627 states and 1725 transitions. [2021-12-16 08:57:01,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:57:01,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-16 08:57:01,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:01,316 INFO L225 Difference]: With dead ends: 1627 [2021-12-16 08:57:01,316 INFO L226 Difference]: Without dead ends: 1627 [2021-12-16 08:57:01,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:57:01,316 INFO L933 BasicCegarLoop]: 1339 mSDtfsCounter, 674 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:01,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 1855 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 08:57:01,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2021-12-16 08:57:01,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1194. [2021-12-16 08:57:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 642 states have (on average 2.0062305295950154) internal successors, (1288), 1189 states have internal predecessors, (1288), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:57:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1294 transitions. [2021-12-16 08:57:01,331 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1294 transitions. Word has length 8 [2021-12-16 08:57:01,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:01,332 INFO L470 AbstractCegarLoop]: Abstraction has 1194 states and 1294 transitions. [2021-12-16 08:57:01,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:01,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1294 transitions. [2021-12-16 08:57:01,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 08:57:01,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:01,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:01,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-16 08:57:01,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:01,539 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:01,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:01,539 INFO L85 PathProgramCache]: Analyzing trace with hash 871378613, now seen corresponding path program 1 times [2021-12-16 08:57:01,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:01,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950033755] [2021-12-16 08:57:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:57:01,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:01,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:01,541 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:01,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-16 08:57:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:57:01,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 08:57:01,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:01,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:01,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:57:01,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:01,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950033755] [2021-12-16 08:57:01,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950033755] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:57:01,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:57:01,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:57:01,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404737060] [2021-12-16 08:57:01,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:57:01,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:57:01,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:57:01,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:57:01,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:57:01,719 INFO L87 Difference]: Start difference. First operand 1194 states and 1294 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:02,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:02,302 INFO L93 Difference]: Finished difference Result 1841 states and 1984 transitions. [2021-12-16 08:57:02,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 08:57:02,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-16 08:57:02,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:02,306 INFO L225 Difference]: With dead ends: 1841 [2021-12-16 08:57:02,306 INFO L226 Difference]: Without dead ends: 1841 [2021-12-16 08:57:02,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:57:02,307 INFO L933 BasicCegarLoop]: 1358 mSDtfsCounter, 754 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 3645 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:02,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 3645 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 08:57:02,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2021-12-16 08:57:02,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1439. [2021-12-16 08:57:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 887 states have (on average 1.9706877113866967) internal successors, (1748), 1434 states have internal predecessors, (1748), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:57:02,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1754 transitions. [2021-12-16 08:57:02,338 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1754 transitions. Word has length 11 [2021-12-16 08:57:02,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:02,338 INFO L470 AbstractCegarLoop]: Abstraction has 1439 states and 1754 transitions. [2021-12-16 08:57:02,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1754 transitions. [2021-12-16 08:57:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 08:57:02,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:02,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:02,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-16 08:57:02,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:02,546 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:02,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:02,547 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-12-16 08:57:02,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:02,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064465260] [2021-12-16 08:57:02,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:57:02,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:02,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:02,548 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:02,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-16 08:57:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:57:02,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 08:57:02,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:02,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:02,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:57:02,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:02,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064465260] [2021-12-16 08:57:02,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064465260] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:57:02,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:57:02,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:57:02,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963582156] [2021-12-16 08:57:02,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:57:02,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:57:02,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:57:02,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:57:02,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:57:02,673 INFO L87 Difference]: Start difference. First operand 1439 states and 1754 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-12-16 08:57:02,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:02,691 INFO L93 Difference]: Finished difference Result 1601 states and 1902 transitions. [2021-12-16 08:57:02,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:57:02,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 [2021-12-16 08:57:02,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:02,696 INFO L225 Difference]: With dead ends: 1601 [2021-12-16 08:57:02,696 INFO L226 Difference]: Without dead ends: 1601 [2021-12-16 08:57:02,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:57:02,697 INFO L933 BasicCegarLoop]: 1182 mSDtfsCounter, 583 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:02,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 1998 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:57:02,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2021-12-16 08:57:02,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1379. [2021-12-16 08:57:02,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 851 states have (on average 1.9529964747356052) internal successors, (1662), 1374 states have internal predecessors, (1662), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:57:02,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1668 transitions. [2021-12-16 08:57:02,716 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1668 transitions. Word has length 13 [2021-12-16 08:57:02,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:02,717 INFO L470 AbstractCegarLoop]: Abstraction has 1379 states and 1668 transitions. [2021-12-16 08:57:02,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-12-16 08:57:02,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1668 transitions. [2021-12-16 08:57:02,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-16 08:57:02,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:02,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:02,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-16 08:57:02,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:02,925 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:02,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:02,925 INFO L85 PathProgramCache]: Analyzing trace with hash -459414345, now seen corresponding path program 1 times [2021-12-16 08:57:02,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:02,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304303355] [2021-12-16 08:57:02,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:57:02,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:02,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:02,927 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:02,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-16 08:57:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:57:03,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:57:03,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:03,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:03,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:57:03,064 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:03,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304303355] [2021-12-16 08:57:03,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304303355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:57:03,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:57:03,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:57:03,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067777902] [2021-12-16 08:57:03,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:57:03,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:57:03,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:57:03,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:57:03,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:57:03,065 INFO L87 Difference]: Start difference. First operand 1379 states and 1668 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:03,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:03,121 INFO L93 Difference]: Finished difference Result 1573 states and 1846 transitions. [2021-12-16 08:57:03,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:57:03,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-16 08:57:03,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:03,131 INFO L225 Difference]: With dead ends: 1573 [2021-12-16 08:57:03,131 INFO L226 Difference]: Without dead ends: 1573 [2021-12-16 08:57:03,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:57:03,131 INFO L933 BasicCegarLoop]: 1137 mSDtfsCounter, 554 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:03,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 3083 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:57:03,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-12-16 08:57:03,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1349. [2021-12-16 08:57:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 835 states have (on average 1.9209580838323352) internal successors, (1604), 1344 states have internal predecessors, (1604), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:57:03,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1610 transitions. [2021-12-16 08:57:03,154 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1610 transitions. Word has length 15 [2021-12-16 08:57:03,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:03,154 INFO L470 AbstractCegarLoop]: Abstraction has 1349 states and 1610 transitions. [2021-12-16 08:57:03,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:03,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1610 transitions. [2021-12-16 08:57:03,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-16 08:57:03,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:03,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:03,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-16 08:57:03,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:03,362 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr634ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:03,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:03,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2058395604, now seen corresponding path program 1 times [2021-12-16 08:57:03,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:03,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845879954] [2021-12-16 08:57:03,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:57:03,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:03,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:03,364 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:03,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-16 08:57:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:57:03,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 08:57:03,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:03,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 08:57:03,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 08:57:03,547 INFO L354 Elim1Store]: treesize reduction 165, result has 13.6 percent of original size [2021-12-16 08:57:03,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 36 [2021-12-16 08:57:03,580 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-12-16 08:57:03,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 20 [2021-12-16 08:57:03,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:03,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:57:03,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:03,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845879954] [2021-12-16 08:57:03,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845879954] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:57:03,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:57:03,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:57:03,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188485008] [2021-12-16 08:57:03,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:57:03,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:57:03,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:57:03,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:57:03,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:57:03,618 INFO L87 Difference]: Start difference. First operand 1349 states and 1610 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:04,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:04,490 INFO L93 Difference]: Finished difference Result 1785 states and 2105 transitions. [2021-12-16 08:57:04,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:57:04,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2021-12-16 08:57:04,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:04,495 INFO L225 Difference]: With dead ends: 1785 [2021-12-16 08:57:04,495 INFO L226 Difference]: Without dead ends: 1785 [2021-12-16 08:57:04,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:57:04,496 INFO L933 BasicCegarLoop]: 1108 mSDtfsCounter, 422 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 3244 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:04,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 3244 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 39 Unchecked, 0.8s Time] [2021-12-16 08:57:04,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2021-12-16 08:57:04,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1348. [2021-12-16 08:57:04,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 834 states have (on average 1.920863309352518) internal successors, (1602), 1343 states have internal predecessors, (1602), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:57:04,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1608 transitions. [2021-12-16 08:57:04,515 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1608 transitions. Word has length 16 [2021-12-16 08:57:04,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:04,516 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 1608 transitions. [2021-12-16 08:57:04,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:04,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1608 transitions. [2021-12-16 08:57:04,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-16 08:57:04,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:04,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:04,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-16 08:57:04,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:04,724 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:04,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:04,725 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-12-16 08:57:04,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:04,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502002039] [2021-12-16 08:57:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:57:04,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:04,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:04,726 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:04,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-16 08:57:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:57:04,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 08:57:04,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:04,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:57:04,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:04,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502002039] [2021-12-16 08:57:04,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502002039] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:57:04,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:57:04,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:57:04,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503124348] [2021-12-16 08:57:04,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:57:04,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:57:04,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:57:04,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:57:04,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:57:04,891 INFO L87 Difference]: Start difference. First operand 1348 states and 1608 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:04,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:04,910 INFO L93 Difference]: Finished difference Result 1288 states and 1522 transitions. [2021-12-16 08:57:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:57:04,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-16 08:57:04,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:04,914 INFO L225 Difference]: With dead ends: 1288 [2021-12-16 08:57:04,914 INFO L226 Difference]: Without dead ends: 1288 [2021-12-16 08:57:04,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:57:04,915 INFO L933 BasicCegarLoop]: 1103 mSDtfsCounter, 1087 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:04,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1090 Valid, 1125 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:57:04,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-12-16 08:57:04,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2021-12-16 08:57:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 798 states have (on average 1.899749373433584) internal successors, (1516), 1283 states have internal predecessors, (1516), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:57:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1522 transitions. [2021-12-16 08:57:04,930 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1522 transitions. Word has length 18 [2021-12-16 08:57:04,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:04,931 INFO L470 AbstractCegarLoop]: Abstraction has 1288 states and 1522 transitions. [2021-12-16 08:57:04,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:04,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1522 transitions. [2021-12-16 08:57:04,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-16 08:57:04,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:04,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:04,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-16 08:57:05,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:05,140 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:05,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:05,140 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-12-16 08:57:05,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:05,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479073021] [2021-12-16 08:57:05,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:57:05,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:05,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:05,142 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:05,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-16 08:57:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:57:05,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:57:05,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:05,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:57:05,322 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:05,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479073021] [2021-12-16 08:57:05,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479073021] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:57:05,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:57:05,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:57:05,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634846933] [2021-12-16 08:57:05,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:57:05,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:57:05,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:57:05,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:57:05,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:57:05,324 INFO L87 Difference]: Start difference. First operand 1288 states and 1522 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:05,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:05,381 INFO L93 Difference]: Finished difference Result 1260 states and 1466 transitions. [2021-12-16 08:57:05,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:57:05,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-16 08:57:05,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:05,385 INFO L225 Difference]: With dead ends: 1260 [2021-12-16 08:57:05,385 INFO L226 Difference]: Without dead ends: 1260 [2021-12-16 08:57:05,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:57:05,386 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 1058 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 2131 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:05,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 2131 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:57:05,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-12-16 08:57:05,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1258. [2021-12-16 08:57:05,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 782 states have (on average 1.8644501278772379) internal successors, (1458), 1253 states have internal predecessors, (1458), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:57:05,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1464 transitions. [2021-12-16 08:57:05,404 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1464 transitions. Word has length 20 [2021-12-16 08:57:05,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:05,404 INFO L470 AbstractCegarLoop]: Abstraction has 1258 states and 1464 transitions. [2021-12-16 08:57:05,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:05,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1464 transitions. [2021-12-16 08:57:05,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 08:57:05,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:05,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:05,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-16 08:57:05,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:05,611 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:05,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:05,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-12-16 08:57:05,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:05,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776066066] [2021-12-16 08:57:05,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:57:05,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:05,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:05,613 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:05,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-16 08:57:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:57:05,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:57:05,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:05,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:57:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:05,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:57:05,852 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:05,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776066066] [2021-12-16 08:57:05,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776066066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:57:05,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:57:05,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:57:05,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954746417] [2021-12-16 08:57:05,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:57:05,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:57:05,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:57:05,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:57:05,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:57:05,854 INFO L87 Difference]: Start difference. First operand 1258 states and 1464 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:07,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:07,709 INFO L93 Difference]: Finished difference Result 1838 states and 2167 transitions. [2021-12-16 08:57:07,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 08:57:07,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-16 08:57:07,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:07,714 INFO L225 Difference]: With dead ends: 1838 [2021-12-16 08:57:07,714 INFO L226 Difference]: Without dead ends: 1838 [2021-12-16 08:57:07,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:57:07,715 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1714 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:07,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1714 Valid, 1217 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-16 08:57:07,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2021-12-16 08:57:07,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1254. [2021-12-16 08:57:07,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 782 states have (on average 1.854219948849105) internal successors, (1450), 1249 states have internal predecessors, (1450), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:57:07,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1456 transitions. [2021-12-16 08:57:07,728 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1456 transitions. Word has length 34 [2021-12-16 08:57:07,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:07,728 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 1456 transitions. [2021-12-16 08:57:07,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:07,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1456 transitions. [2021-12-16 08:57:07,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 08:57:07,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:07,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:07,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-16 08:57:07,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:07,937 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:07,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:07,937 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-12-16 08:57:07,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:07,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813936012] [2021-12-16 08:57:07,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:57:07,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:07,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:07,956 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:07,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-16 08:57:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:57:08,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 08:57:08,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:08,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:57:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:08,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:57:08,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:08,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813936012] [2021-12-16 08:57:08,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813936012] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:57:08,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:57:08,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:57:08,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964015079] [2021-12-16 08:57:08,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:57:08,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:57:08,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:57:08,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:57:08,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:57:08,287 INFO L87 Difference]: Start difference. First operand 1254 states and 1456 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:11,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:11,025 INFO L93 Difference]: Finished difference Result 1968 states and 2276 transitions. [2021-12-16 08:57:11,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 08:57:11,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-16 08:57:11,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:11,030 INFO L225 Difference]: With dead ends: 1968 [2021-12-16 08:57:11,030 INFO L226 Difference]: Without dead ends: 1968 [2021-12-16 08:57:11,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:57:11,030 INFO L933 BasicCegarLoop]: 1381 mSDtfsCounter, 1212 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:11,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1212 Valid, 2459 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-16 08:57:11,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2021-12-16 08:57:11,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1250. [2021-12-16 08:57:11,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 782 states have (on average 1.843989769820972) internal successors, (1442), 1245 states have internal predecessors, (1442), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:57:11,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1448 transitions. [2021-12-16 08:57:11,046 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1448 transitions. Word has length 34 [2021-12-16 08:57:11,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:11,046 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1448 transitions. [2021-12-16 08:57:11,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:11,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1448 transitions. [2021-12-16 08:57:11,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-16 08:57:11,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:11,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:11,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-16 08:57:11,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:11,255 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:11,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:11,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-12-16 08:57:11,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:11,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81054316] [2021-12-16 08:57:11,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:57:11,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:11,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:11,257 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:11,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-16 08:57:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:57:11,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:57:11,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:11,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:11,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:57:11,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:11,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81054316] [2021-12-16 08:57:11,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81054316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:57:11,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:57:11,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:57:11,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112288450] [2021-12-16 08:57:11,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:57:11,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:57:11,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:57:11,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:57:11,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:57:11,542 INFO L87 Difference]: Start difference. First operand 1250 states and 1448 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:11,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:11,578 INFO L93 Difference]: Finished difference Result 1238 states and 1428 transitions. [2021-12-16 08:57:11,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:57:11,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2021-12-16 08:57:11,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:11,581 INFO L225 Difference]: With dead ends: 1238 [2021-12-16 08:57:11,581 INFO L226 Difference]: Without dead ends: 1238 [2021-12-16 08:57:11,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:57:11,582 INFO L933 BasicCegarLoop]: 1052 mSDtfsCounter, 1034 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:11,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1037 Valid, 2109 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:57:11,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2021-12-16 08:57:11,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1238. [2021-12-16 08:57:11,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 770 states have (on average 1.8467532467532468) internal successors, (1422), 1233 states have internal predecessors, (1422), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:57:11,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1428 transitions. [2021-12-16 08:57:11,607 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1428 transitions. Word has length 52 [2021-12-16 08:57:11,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:11,607 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1428 transitions. [2021-12-16 08:57:11,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:11,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1428 transitions. [2021-12-16 08:57:11,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-16 08:57:11,609 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:11,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:11,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-16 08:57:11,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:11,819 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:11,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:11,819 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-12-16 08:57:11,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:11,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564334478] [2021-12-16 08:57:11,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:57:11,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:11,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:11,821 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:11,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-16 08:57:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:57:12,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 08:57:12,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:12,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:57:12,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:57:12,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 08:57:12,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-16 08:57:12,553 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 08:57:12,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-16 08:57:12,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:12,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:57:12,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:12,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564334478] [2021-12-16 08:57:12,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564334478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:57:12,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:57:12,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:57:12,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630538327] [2021-12-16 08:57:12,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:57:12,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:57:12,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:57:12,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:57:12,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:57:12,565 INFO L87 Difference]: Start difference. First operand 1238 states and 1428 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:14,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:14,572 INFO L93 Difference]: Finished difference Result 1586 states and 1893 transitions. [2021-12-16 08:57:14,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:57:14,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-12-16 08:57:14,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:14,578 INFO L225 Difference]: With dead ends: 1586 [2021-12-16 08:57:14,578 INFO L226 Difference]: Without dead ends: 1586 [2021-12-16 08:57:14,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:57:14,580 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 1107 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:14,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1110 Valid, 789 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-16 08:57:14,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2021-12-16 08:57:14,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1168. [2021-12-16 08:57:14,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 738 states have (on average 1.7859078590785908) internal successors, (1318), 1163 states have internal predecessors, (1318), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:57:14,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1324 transitions. [2021-12-16 08:57:14,593 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1324 transitions. Word has length 60 [2021-12-16 08:57:14,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:14,593 INFO L470 AbstractCegarLoop]: Abstraction has 1168 states and 1324 transitions. [2021-12-16 08:57:14,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:14,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1324 transitions. [2021-12-16 08:57:14,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 08:57:14,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:14,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:14,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-16 08:57:14,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:14,804 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:14,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:14,804 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-12-16 08:57:14,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:14,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118025565] [2021-12-16 08:57:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:57:14,805 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:14,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:14,806 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:14,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-16 08:57:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:57:15,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 08:57:15,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:15,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:57:15,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 08:57:15,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-12-16 08:57:15,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:15,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:57:15,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:15,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118025565] [2021-12-16 08:57:15,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118025565] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:57:15,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:57:15,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:57:15,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690096006] [2021-12-16 08:57:15,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:57:15,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 08:57:15,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:57:15,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 08:57:15,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:57:15,174 INFO L87 Difference]: Start difference. First operand 1168 states and 1324 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:17,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:17,033 INFO L93 Difference]: Finished difference Result 1167 states and 1323 transitions. [2021-12-16 08:57:17,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 08:57:17,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-16 08:57:17,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:17,036 INFO L225 Difference]: With dead ends: 1167 [2021-12-16 08:57:17,036 INFO L226 Difference]: Without dead ends: 1167 [2021-12-16 08:57:17,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 08:57:17,037 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 4 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:17,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2564 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-16 08:57:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2021-12-16 08:57:17,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1167. [2021-12-16 08:57:17,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 738 states have (on average 1.7845528455284554) internal successors, (1317), 1162 states have internal predecessors, (1317), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:57:17,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1323 transitions. [2021-12-16 08:57:17,047 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1323 transitions. Word has length 65 [2021-12-16 08:57:17,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:17,048 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 1323 transitions. [2021-12-16 08:57:17,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:17,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1323 transitions. [2021-12-16 08:57:17,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 08:57:17,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:17,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:17,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-16 08:57:17,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:17,252 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:17,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:17,253 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-12-16 08:57:17,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:17,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143285205] [2021-12-16 08:57:17,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:57:17,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:17,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:17,254 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:17,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-16 08:57:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:57:17,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 08:57:17,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:17,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:57:17,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 08:57:17,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 08:57:17,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-16 08:57:17,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-16 08:57:17,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:17,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:57:17,623 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:17,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143285205] [2021-12-16 08:57:17,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143285205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:57:17,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:57:17,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:57:17,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705884186] [2021-12-16 08:57:17,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:57:17,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 08:57:17,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:57:17,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 08:57:17,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:57:17,624 INFO L87 Difference]: Start difference. First operand 1167 states and 1323 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:19,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:19,789 INFO L93 Difference]: Finished difference Result 1166 states and 1322 transitions. [2021-12-16 08:57:19,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 08:57:19,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-16 08:57:19,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:19,793 INFO L225 Difference]: With dead ends: 1166 [2021-12-16 08:57:19,793 INFO L226 Difference]: Without dead ends: 1166 [2021-12-16 08:57:19,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 08:57:19,793 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 2 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:19,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2621 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-16 08:57:19,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2021-12-16 08:57:19,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2021-12-16 08:57:19,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 737 states have (on average 1.78561736770692) internal successors, (1316), 1161 states have internal predecessors, (1316), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 08:57:19,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1322 transitions. [2021-12-16 08:57:19,802 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1322 transitions. Word has length 65 [2021-12-16 08:57:19,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:19,803 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 1322 transitions. [2021-12-16 08:57:19,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:57:19,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1322 transitions. [2021-12-16 08:57:19,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-16 08:57:19,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:19,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:19,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-16 08:57:20,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:20,014 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:20,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:20,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1088613615, now seen corresponding path program 1 times [2021-12-16 08:57:20,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:20,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117252139] [2021-12-16 08:57:20,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:57:20,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:20,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:20,016 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:20,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-16 08:57:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:57:20,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:57:20,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:20,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:57:20,320 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:20,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117252139] [2021-12-16 08:57:20,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117252139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:57:20,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:57:20,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:57:20,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238656984] [2021-12-16 08:57:20,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:57:20,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:57:20,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:57:20,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:57:20,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:57:20,322 INFO L87 Difference]: Start difference. First operand 1166 states and 1322 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 08:57:20,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:20,365 INFO L93 Difference]: Finished difference Result 1169 states and 1326 transitions. [2021-12-16 08:57:20,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:57:20,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-12-16 08:57:20,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:20,375 INFO L225 Difference]: With dead ends: 1169 [2021-12-16 08:57:20,375 INFO L226 Difference]: Without dead ends: 1169 [2021-12-16 08:57:20,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:57:20,376 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 2 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:20,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3031 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:57:20,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2021-12-16 08:57:20,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1169. [2021-12-16 08:57:20,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 739 states have (on average 1.7848443843031123) internal successors, (1319), 1164 states have internal predecessors, (1319), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-16 08:57:20,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1326 transitions. [2021-12-16 08:57:20,392 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1326 transitions. Word has length 73 [2021-12-16 08:57:20,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:20,392 INFO L470 AbstractCegarLoop]: Abstraction has 1169 states and 1326 transitions. [2021-12-16 08:57:20,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 08:57:20,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1326 transitions. [2021-12-16 08:57:20,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-16 08:57:20,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:20,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:20,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-16 08:57:20,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:20,599 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:20,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:20,600 INFO L85 PathProgramCache]: Analyzing trace with hash 145492468, now seen corresponding path program 1 times [2021-12-16 08:57:20,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:20,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170472345] [2021-12-16 08:57:20,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:57:20,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:20,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:20,601 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:20,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-16 08:57:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:57:20,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:57:20,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:20,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:20,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:57:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:21,017 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:21,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170472345] [2021-12-16 08:57:21,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170472345] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:57:21,017 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:57:21,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-16 08:57:21,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636241944] [2021-12-16 08:57:21,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:57:21,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 08:57:21,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:57:21,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 08:57:21,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 08:57:21,019 INFO L87 Difference]: Start difference. First operand 1169 states and 1326 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:57:21,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:21,151 INFO L93 Difference]: Finished difference Result 1181 states and 1343 transitions. [2021-12-16 08:57:21,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 08:57:21,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2021-12-16 08:57:21,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:21,155 INFO L225 Difference]: With dead ends: 1181 [2021-12-16 08:57:21,155 INFO L226 Difference]: Without dead ends: 1181 [2021-12-16 08:57:21,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-12-16 08:57:21,156 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 14 mSDsluCounter, 5041 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 6054 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:21,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 6054 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 08:57:21,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2021-12-16 08:57:21,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1179. [2021-12-16 08:57:21,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 748 states have (on average 1.7834224598930482) internal successors, (1334), 1173 states have internal predecessors, (1334), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-16 08:57:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1341 transitions. [2021-12-16 08:57:21,173 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1341 transitions. Word has length 74 [2021-12-16 08:57:21,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:21,173 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1341 transitions. [2021-12-16 08:57:21,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:57:21,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1341 transitions. [2021-12-16 08:57:21,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-16 08:57:21,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:21,179 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:21,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-16 08:57:21,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:21,380 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:21,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:21,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2026145327, now seen corresponding path program 2 times [2021-12-16 08:57:21,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:21,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536250044] [2021-12-16 08:57:21,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 08:57:21,381 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:21,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:21,381 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:21,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-16 08:57:21,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 08:57:21,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:57:21,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 08:57:21,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:21,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:57:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:22,061 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:22,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536250044] [2021-12-16 08:57:22,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536250044] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:57:22,062 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:57:22,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-12-16 08:57:22,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280245863] [2021-12-16 08:57:22,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:57:22,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 08:57:22,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:57:22,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 08:57:22,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-16 08:57:22,063 INFO L87 Difference]: Start difference. First operand 1179 states and 1341 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:57:22,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:22,511 INFO L93 Difference]: Finished difference Result 1200 states and 1369 transitions. [2021-12-16 08:57:22,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-16 08:57:22,512 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2021-12-16 08:57:22,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:22,514 INFO L225 Difference]: With dead ends: 1200 [2021-12-16 08:57:22,514 INFO L226 Difference]: Without dead ends: 1196 [2021-12-16 08:57:22,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2021-12-16 08:57:22,515 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 57 mSDsluCounter, 7076 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 8092 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:22,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 8092 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 08:57:22,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-12-16 08:57:22,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1188. [2021-12-16 08:57:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 757 states have (on average 1.7780713342140027) internal successors, (1346), 1182 states have internal predecessors, (1346), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-16 08:57:22,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1353 transitions. [2021-12-16 08:57:22,527 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1353 transitions. Word has length 77 [2021-12-16 08:57:22,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:22,527 INFO L470 AbstractCegarLoop]: Abstraction has 1188 states and 1353 transitions. [2021-12-16 08:57:22,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:57:22,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1353 transitions. [2021-12-16 08:57:22,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-16 08:57:22,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:22,528 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:22,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-12-16 08:57:22,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:22,728 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:22,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:22,728 INFO L85 PathProgramCache]: Analyzing trace with hash -570392561, now seen corresponding path program 3 times [2021-12-16 08:57:22,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:22,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222924293] [2021-12-16 08:57:22,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 08:57:22,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:22,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:22,730 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:22,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-16 08:57:23,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-16 08:57:23,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:57:23,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-16 08:57:23,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:23,536 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:23,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:57:24,130 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:24,130 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:24,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222924293] [2021-12-16 08:57:24,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222924293] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:57:24,131 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:57:24,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-12-16 08:57:24,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106285723] [2021-12-16 08:57:24,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:57:24,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-16 08:57:24,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:57:24,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-16 08:57:24,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-12-16 08:57:24,132 INFO L87 Difference]: Start difference. First operand 1188 states and 1353 transitions. Second operand has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:57:26,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:26,535 INFO L93 Difference]: Finished difference Result 1230 states and 1415 transitions. [2021-12-16 08:57:26,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-16 08:57:26,536 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2021-12-16 08:57:26,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:26,538 INFO L225 Difference]: With dead ends: 1230 [2021-12-16 08:57:26,538 INFO L226 Difference]: Without dead ends: 1224 [2021-12-16 08:57:26,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2021-12-16 08:57:26,539 INFO L933 BasicCegarLoop]: 1021 mSDtfsCounter, 132 mSDsluCounter, 12194 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 13215 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:26,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 13215 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 08:57:26,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2021-12-16 08:57:26,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1206. [2021-12-16 08:57:26,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 775 states have (on average 1.7664516129032257) internal successors, (1369), 1200 states have internal predecessors, (1369), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-16 08:57:26,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1376 transitions. [2021-12-16 08:57:26,563 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1376 transitions. Word has length 83 [2021-12-16 08:57:26,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:26,563 INFO L470 AbstractCegarLoop]: Abstraction has 1206 states and 1376 transitions. [2021-12-16 08:57:26,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:57:26,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1376 transitions. [2021-12-16 08:57:26,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-16 08:57:26,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:26,565 INFO L514 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:26,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-12-16 08:57:26,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:26,783 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:26,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:26,784 INFO L85 PathProgramCache]: Analyzing trace with hash -322585649, now seen corresponding path program 4 times [2021-12-16 08:57:26,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:26,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043738569] [2021-12-16 08:57:26,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 08:57:26,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:26,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:26,785 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:26,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-16 08:57:27,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 08:57:27,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:57:27,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-16 08:57:27,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:27,444 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:27,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:57:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:57:28,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:28,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043738569] [2021-12-16 08:57:28,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043738569] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:57:28,938 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:57:28,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2021-12-16 08:57:28,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102507827] [2021-12-16 08:57:28,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:57:28,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-12-16 08:57:28,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:57:28,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-12-16 08:57:28,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2021-12-16 08:57:28,940 INFO L87 Difference]: Start difference. First operand 1206 states and 1376 transitions. Second operand has 50 states, 50 states have (on average 2.36) internal successors, (118), 50 states have internal predecessors, (118), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:57:37,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:57:37,880 INFO L93 Difference]: Finished difference Result 1286 states and 1488 transitions. [2021-12-16 08:57:37,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-12-16 08:57:37,883 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.36) internal successors, (118), 50 states have internal predecessors, (118), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 95 [2021-12-16 08:57:37,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:57:37,885 INFO L225 Difference]: With dead ends: 1286 [2021-12-16 08:57:37,885 INFO L226 Difference]: Without dead ends: 1282 [2021-12-16 08:57:37,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2021-12-16 08:57:37,890 INFO L933 BasicCegarLoop]: 1033 mSDtfsCounter, 410 mSDsluCounter, 24679 mSDsCounter, 0 mSdLazyCounter, 2465 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 25712 SdHoareTripleChecker+Invalid, 2840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-16 08:57:37,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 25712 Invalid, 2840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2465 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-16 08:57:37,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2021-12-16 08:57:37,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1240. [2021-12-16 08:57:37,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 809 states have (on average 1.7490729295426453) internal successors, (1415), 1234 states have internal predecessors, (1415), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-16 08:57:37,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1422 transitions. [2021-12-16 08:57:37,913 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1422 transitions. Word has length 95 [2021-12-16 08:57:37,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:57:37,913 INFO L470 AbstractCegarLoop]: Abstraction has 1240 states and 1422 transitions. [2021-12-16 08:57:37,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.36) internal successors, (118), 50 states have internal predecessors, (118), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:57:37,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1422 transitions. [2021-12-16 08:57:37,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-16 08:57:37,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:57:37,914 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:57:37,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-12-16 08:57:38,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:57:38,125 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-16 08:57:38,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:57:38,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2011177647, now seen corresponding path program 5 times [2021-12-16 08:57:38,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:57:38,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162962527] [2021-12-16 08:57:38,126 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 08:57:38,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:57:38,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:57:38,127 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:57:38,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-16 08:57:39,175 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-12-16 08:57:39,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:57:39,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 109 conjunts are in the unsatisfiable core [2021-12-16 08:57:39,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:57:39,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:57:39,337 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 08:57:39,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-16 08:57:39,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:57:39,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 08:57:39,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 08:57:39,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-12-16 08:57:39,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-16 08:57:39,480 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1942 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1942))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1943 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1943)))) is different from true [2021-12-16 08:57:39,491 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1944 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1944))) (exists ((v_ArrVal_1945 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1945))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32)))) is different from true [2021-12-16 08:57:39,528 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1948 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1948))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1949 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1949)))) is different from true [2021-12-16 08:57:39,538 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1951 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1951))) (exists ((v_ArrVal_1950 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1950)))) is different from true [2021-12-16 08:57:39,569 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1955 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1955))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1954 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1954)))) is different from true [2021-12-16 08:57:39,599 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1958 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1958))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1959 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1959)))) is different from true [2021-12-16 08:57:39,630 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1962 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1962))) (exists ((v_ArrVal_1963 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1963)))) is different from true [2021-12-16 08:57:39,645 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1965 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1965))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1964 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1964)))) is different from true [2021-12-16 08:57:39,675 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1968 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1968))) (exists ((v_ArrVal_1969 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1969)))) is different from true [2021-12-16 08:57:39,685 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1971 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1971))) (exists ((v_ArrVal_1970 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1970)))) is different from true [2021-12-16 08:57:39,696 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1972 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1972))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1973 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1973)))) is different from true [2021-12-16 08:57:39,725 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1976 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1976))) (exists ((v_ArrVal_1977 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1977))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32)))) is different from true [2021-12-16 08:57:39,733 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1979 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1979))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1978 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1978)))) is different from true [2021-12-16 08:57:39,761 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1982 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1982))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1983 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1983)))) is different from true [2021-12-16 08:57:39,819 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1988 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1988))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1989 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1989)))) is different from true [2021-12-16 08:57:39,972 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2004 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2004))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_2005 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2005)))) is different from true [2021-12-16 08:57:39,980 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2007 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2007))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_2006 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2006)))) is different from true [2021-12-16 08:57:40,032 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_2011 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2011))) (exists ((v_ArrVal_2010 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2010)))) is different from true [2021-12-16 08:57:40,042 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_2013 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2013))) (exists ((v_ArrVal_2012 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2012)))) is different from true [2021-12-16 08:57:40,051 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_2014 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2014))) (exists ((v_ArrVal_2015 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2015)))) is different from true [2021-12-16 08:57:40,060 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2016 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2016))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_2017 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2017)))) is different from true [2021-12-16 08:57:40,112 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_2023 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2023))) (exists ((v_ArrVal_2022 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2022)))) is different from true [2021-12-16 08:57:40,120 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2025 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2025))) (exists ((v_ArrVal_2024 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2024))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32)))) is different from true [2021-12-16 08:57:40,131 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2026 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2026))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_2027 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2027)))) is different from true [2021-12-16 08:57:40,143 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2029 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2029))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_2028 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2028)))) is different from true [2021-12-16 08:57:40,177 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-16 08:57:40,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-12-16 08:57:40,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-16 08:57:40,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-12-16 08:57:40,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-16 08:57:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 171 trivial. 800 not checked. [2021-12-16 08:57:40,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:57:40,837 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2120 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2121 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~user~0#1.offset| (_ bv8 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2121) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2120) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))))) (forall ((v_ArrVal_2121 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2121) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd |c_ULTIMATE.start_main_~user~0#1.offset| (_ bv8 32))))) (bvule (bvadd .cse1 (_ bv16 32)) (bvadd .cse1 (_ bv20 32)))))) is different from false [2021-12-16 08:57:40,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:57:40,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162962527] [2021-12-16 08:57:40,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162962527] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 08:57:40,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1092797215] [2021-12-16 08:57:40,842 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 08:57:40,842 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-16 08:57:40,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-16 08:57:40,843 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-16 08:57:40,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process