./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b 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_test10-2.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 9a343b75818c5d561b79c31bb62e9abdd9bdb0bf3f01f7efa313d9ef0f4204f4 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 22:33:44,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 22:33:44,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 22:33:44,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 22:33:44,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 22:33:44,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 22:33:44,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 22:33:44,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 22:33:44,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 22:33:44,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 22:33:44,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 22:33:44,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 22:33:44,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 22:33:44,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 22:33:44,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 22:33:44,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 22:33:44,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 22:33:44,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 22:33:44,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 22:33:44,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 22:33:44,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 22:33:44,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 22:33:44,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 22:33:44,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 22:33:44,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 22:33:44,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 22:33:44,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 22:33:44,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 22:33:44,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 22:33:44,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 22:33:44,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 22:33:44,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 22:33:44,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 22:33:44,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 22:33:44,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 22:33:44,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 22:33:44,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 22:33:44,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 22:33:44,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 22:33:44,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 22:33:44,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 22:33:44,839 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-14 22:33:44,861 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 22:33:44,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 22:33:44,863 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 22:33:44,863 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 22:33:44,864 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 22:33:44,864 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 22:33:44,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 22:33:44,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 22:33:44,865 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 22:33:44,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 22:33:44,866 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 22:33:44,866 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 22:33:44,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 22:33:44,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 22:33:44,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 22:33:44,867 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-14 22:33:44,867 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-14 22:33:44,867 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-14 22:33:44,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 22:33:44,868 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 22:33:44,868 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 22:33:44,868 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 22:33:44,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 22:33:44,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 22:33:44,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 22:33:44,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 22:33:44,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 22:33:44,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 22:33:44,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 22:33:44,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 22:33:44,869 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 22:33:44,869 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a343b75818c5d561b79c31bb62e9abdd9bdb0bf3f01f7efa313d9ef0f4204f4 [2021-12-14 22:33:45,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 22:33:45,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 22:33:45,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 22:33:45,072 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 22:33:45,073 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 22:33:45,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i [2021-12-14 22:33:45,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90513c70c/84f5c40b097e46ce85e40bc98ff6ca71/FLAGe21327263 [2021-12-14 22:33:45,532 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 22:33:45,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i [2021-12-14 22:33:45,557 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90513c70c/84f5c40b097e46ce85e40bc98ff6ca71/FLAGe21327263 [2021-12-14 22:33:45,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90513c70c/84f5c40b097e46ce85e40bc98ff6ca71 [2021-12-14 22:33:45,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 22:33:45,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 22:33:45,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 22:33:45,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 22:33:45,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 22:33:45,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:33:45" (1/1) ... [2021-12-14 22:33:45,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3864f0cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:33:45, skipping insertion in model container [2021-12-14 22:33:45,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:33:45" (1/1) ... [2021-12-14 22:33:45,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 22:33:45,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 22:33:46,209 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_test10-2.i[33022,33035] [2021-12-14 22:33:46,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:33:46,384 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) [2021-12-14 22:33:46,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7583e56e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:33:46, skipping insertion in model container [2021-12-14 22:33:46,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 22:33:46,385 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-14 22:33:46,387 INFO L158 Benchmark]: Toolchain (without parser) took 527.56ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 55.8MB in the beginning and 76.6MB in the end (delta: -20.8MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2021-12-14 22:33:46,387 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory was 47.4MB in the beginning and 47.4MB in the end (delta: 32.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:33:46,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 525.88ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 55.6MB in the beginning and 76.6MB in the end (delta: -21.0MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2021-12-14 22:33:46,389 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 90.2MB. Free memory was 47.4MB in the beginning and 47.4MB in the end (delta: 32.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 525.88ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 55.6MB in the beginning and 76.6MB in the end (delta: -21.0MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.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 9a343b75818c5d561b79c31bb62e9abdd9bdb0bf3f01f7efa313d9ef0f4204f4 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 22:33:47,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 22:33:47,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 22:33:47,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 22:33:47,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 22:33:47,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 22:33:47,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 22:33:47,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 22:33:47,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 22:33:47,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 22:33:47,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 22:33:47,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 22:33:47,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 22:33:47,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 22:33:47,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 22:33:47,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 22:33:47,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 22:33:47,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 22:33:47,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 22:33:47,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 22:33:47,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 22:33:47,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 22:33:47,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 22:33:47,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 22:33:47,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 22:33:47,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 22:33:47,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 22:33:47,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 22:33:47,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 22:33:47,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 22:33:47,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 22:33:47,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 22:33:47,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 22:33:47,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 22:33:47,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 22:33:47,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 22:33:47,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 22:33:47,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 22:33:47,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 22:33:47,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 22:33:47,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 22:33:47,995 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-14 22:33:48,025 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 22:33:48,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 22:33:48,026 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 22:33:48,026 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 22:33:48,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 22:33:48,027 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 22:33:48,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 22:33:48,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 22:33:48,029 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 22:33:48,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 22:33:48,030 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 22:33:48,030 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 22:33:48,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 22:33:48,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 22:33:48,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 22:33:48,030 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-14 22:33:48,031 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-14 22:33:48,031 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-14 22:33:48,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 22:33:48,031 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 22:33:48,031 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 22:33:48,031 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 22:33:48,032 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 22:33:48,032 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 22:33:48,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 22:33:48,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 22:33:48,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 22:33:48,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 22:33:48,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 22:33:48,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 22:33:48,033 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 22:33:48,033 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 22:33:48,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 22:33:48,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 22:33:48,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a343b75818c5d561b79c31bb62e9abdd9bdb0bf3f01f7efa313d9ef0f4204f4 [2021-12-14 22:33:48,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 22:33:48,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 22:33:48,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 22:33:48,337 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 22:33:48,338 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 22:33:48,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i [2021-12-14 22:33:48,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a78b991b/ae24331fd8d14956ab05175bf45dd5e1/FLAGdc5fbc81b [2021-12-14 22:33:48,814 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 22:33:48,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i [2021-12-14 22:33:48,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a78b991b/ae24331fd8d14956ab05175bf45dd5e1/FLAGdc5fbc81b [2021-12-14 22:33:48,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a78b991b/ae24331fd8d14956ab05175bf45dd5e1 [2021-12-14 22:33:48,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 22:33:48,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 22:33:48,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 22:33:48,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 22:33:48,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 22:33:48,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:33:48" (1/1) ... [2021-12-14 22:33:48,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c285eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:33:48, skipping insertion in model container [2021-12-14 22:33:48,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:33:48" (1/1) ... [2021-12-14 22:33:48,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 22:33:48,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 22:33:49,216 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_test10-2.i[33022,33035] [2021-12-14 22:33:49,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:33:49,401 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-14 22:33:49,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 22:33:49,430 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_test10-2.i[33022,33035] [2021-12-14 22:33:49,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:33:49,520 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 22:33:49,541 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_test10-2.i[33022,33035] [2021-12-14 22:33:49,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:33:49,637 INFO L208 MainTranslator]: Completed translation [2021-12-14 22:33:49,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:33:49 WrapperNode [2021-12-14 22:33:49,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 22:33:49,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 22:33:49,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 22:33:49,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 22:33:49,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:33:49" (1/1) ... [2021-12-14 22:33:49,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:33:49" (1/1) ... [2021-12-14 22:33:49,755 INFO L137 Inliner]: procedures = 180, calls = 575, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2348 [2021-12-14 22:33:49,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 22:33:49,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 22:33:49,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 22:33:49,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 22:33:49,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:33:49" (1/1) ... [2021-12-14 22:33:49,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:33:49" (1/1) ... [2021-12-14 22:33:49,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:33:49" (1/1) ... [2021-12-14 22:33:49,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:33:49" (1/1) ... [2021-12-14 22:33:49,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:33:49" (1/1) ... [2021-12-14 22:33:49,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:33:49" (1/1) ... [2021-12-14 22:33:49,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:33:49" (1/1) ... [2021-12-14 22:33:49,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 22:33:49,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 22:33:49,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 22:33:49,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 22:33:49,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:33:49" (1/1) ... [2021-12-14 22:33:49,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 22:33:49,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:33:49,903 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) [2021-12-14 22:33:49,911 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 [2021-12-14 22:33:49,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-14 22:33:49,932 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-12-14 22:33:49,951 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-12-14 22:33:49,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-14 22:33:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 22:33:49,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 22:33:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 22:33:49,953 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 22:33:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 22:33:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 22:33:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 22:33:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 22:33:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-14 22:33:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 22:33:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 22:33:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-14 22:33:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 22:33:49,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 22:33:49,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 22:33:50,199 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 22:33:50,201 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 22:33:50,203 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 22:33:56,050 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 22:33:56,064 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 22:33:56,065 INFO L301 CfgBuilder]: Removed 160 assume(true) statements. [2021-12-14 22:33:56,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:33:56 BoogieIcfgContainer [2021-12-14 22:33:56,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 22:33:56,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 22:33:56,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 22:33:56,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 22:33:56,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:33:48" (1/3) ... [2021-12-14 22:33:56,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0f9122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:33:56, skipping insertion in model container [2021-12-14 22:33:56,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:33:49" (2/3) ... [2021-12-14 22:33:56,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0f9122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:33:56, skipping insertion in model container [2021-12-14 22:33:56,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:33:56" (3/3) ... [2021-12-14 22:33:56,075 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test10-2.i [2021-12-14 22:33:56,078 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 22:33:56,079 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1095 error locations. [2021-12-14 22:33:56,118 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 22:33:56,126 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 [2021-12-14 22:33:56,127 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1095 error locations. [2021-12-14 22:33:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 2259 states, 1152 states have (on average 2.2144097222222223) internal successors, (2551), 2245 states have internal predecessors, (2551), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-14 22:33:56,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-14 22:33:56,162 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:33:56,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-14 22:33:56,162 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-12-14 22:33:56,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:33:56,166 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2021-12-14 22:33:56,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:33:56,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589606002] [2021-12-14 22:33:56,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:33:56,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:33:56,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:33:56,176 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) [2021-12-14 22:33:56,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 22:33:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:33:56,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 22:33:56,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:33:56,428 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 [2021-12-14 22:33:56,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:33:56,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:33:56,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:33:56,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589606002] [2021-12-14 22:33:56,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589606002] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:33:56,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:33:56,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 22:33:56,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744111471] [2021-12-14 22:33:56,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:33:56,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 22:33:56,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:33:56,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 22:33:56,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:33:56,459 INFO L87 Difference]: Start difference. First operand has 2259 states, 1152 states have (on average 2.2144097222222223) internal successors, (2551), 2245 states have internal predecessors, (2551), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:33:59,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:33:59,261 INFO L93 Difference]: Finished difference Result 2934 states and 3120 transitions. [2021-12-14 22:33:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 22:33:59,263 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 [2021-12-14 22:33:59,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:33:59,283 INFO L225 Difference]: With dead ends: 2934 [2021-12-14 22:33:59,284 INFO L226 Difference]: Without dead ends: 2932 [2021-12-14 22:33:59,285 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 [2021-12-14 22:33:59,288 INFO L933 BasicCegarLoop]: 1394 mSDtfsCounter, 2142 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-14 22:33:59,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2152 Valid, 1869 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-14 22:33:59,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2021-12-14 22:33:59,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 2401. [2021-12-14 22:33:59,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 1318 states have (on average 2.0515933232169954) internal successors, (2704), 2385 states have internal predecessors, (2704), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-14 22:33:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 2736 transitions. [2021-12-14 22:33:59,382 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 2736 transitions. Word has length 3 [2021-12-14 22:33:59,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:33:59,383 INFO L470 AbstractCegarLoop]: Abstraction has 2401 states and 2736 transitions. [2021-12-14 22:33:59,383 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) [2021-12-14 22:33:59,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 2736 transitions. [2021-12-14 22:33:59,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-14 22:33:59,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:33:59,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-14 22:33:59,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-14 22:33:59,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:33:59,591 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-12-14 22:33:59,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:33:59,593 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2021-12-14 22:33:59,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:33:59,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622125158] [2021-12-14 22:33:59,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:33:59,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:33:59,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:33:59,596 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) [2021-12-14 22:33:59,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 22:33:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:33:59,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:33:59,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:33:59,760 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 [2021-12-14 22:33:59,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:33:59,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:33:59,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:33:59,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622125158] [2021-12-14 22:33:59,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622125158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:33:59,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:33:59,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 22:33:59,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258213539] [2021-12-14 22:33:59,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:33:59,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 22:33:59,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:33:59,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 22:33:59,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:33:59,770 INFO L87 Difference]: Start difference. First operand 2401 states and 2736 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) [2021-12-14 22:34:03,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:34:03,927 INFO L93 Difference]: Finished difference Result 3371 states and 3798 transitions. [2021-12-14 22:34:03,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 22:34:03,929 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 [2021-12-14 22:34:03,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:34:03,937 INFO L225 Difference]: With dead ends: 3371 [2021-12-14 22:34:03,938 INFO L226 Difference]: Without dead ends: 3371 [2021-12-14 22:34:03,938 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 [2021-12-14 22:34:03,939 INFO L933 BasicCegarLoop]: 1951 mSDtfsCounter, 1054 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 3245 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-14 22:34:03,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 3245 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-14 22:34:03,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2021-12-14 22:34:03,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 2850. [2021-12-14 22:34:03,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 1765 states have (on average 2.009631728045326) internal successors, (3547), 2831 states have internal predecessors, (3547), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-14 22:34:03,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 3585 transitions. [2021-12-14 22:34:03,983 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 3585 transitions. Word has length 3 [2021-12-14 22:34:03,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:34:03,984 INFO L470 AbstractCegarLoop]: Abstraction has 2850 states and 3585 transitions. [2021-12-14 22:34:03,984 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) [2021-12-14 22:34:03,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 3585 transitions. [2021-12-14 22:34:03,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 22:34:03,984 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:34:03,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:34:03,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-14 22:34:04,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:34:04,191 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-12-14 22:34:04,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:34:04,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1375609072, now seen corresponding path program 1 times [2021-12-14 22:34:04,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:34:04,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064695966] [2021-12-14 22:34:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:34:04,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:34:04,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:34:04,196 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) [2021-12-14 22:34:04,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-14 22:34:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:34:04,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 22:34:04,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:34:04,363 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 [2021-12-14 22:34:04,369 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 [2021-12-14 22:34:04,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 22:34:04,435 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 [2021-12-14 22:34:04,443 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-14 22:34:04,444 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 16 treesize of output 16 [2021-12-14 22:34:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:34:04,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:34:04,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:34:04,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064695966] [2021-12-14 22:34:04,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064695966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:34:04,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:34:04,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 22:34:04,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535877333] [2021-12-14 22:34:04,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:34:04,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 22:34:04,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:34:04,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 22:34:04,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 22:34:04,465 INFO L87 Difference]: Start difference. First operand 2850 states and 3585 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) [2021-12-14 22:34:12,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:34:12,558 INFO L93 Difference]: Finished difference Result 5481 states and 6388 transitions. [2021-12-14 22:34:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 22:34:12,560 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 [2021-12-14 22:34:12,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:34:12,572 INFO L225 Difference]: With dead ends: 5481 [2021-12-14 22:34:12,572 INFO L226 Difference]: Without dead ends: 5481 [2021-12-14 22:34:12,573 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 [2021-12-14 22:34:12,575 INFO L933 BasicCegarLoop]: 847 mSDtfsCounter, 2765 mSDsluCounter, 2043 mSDsCounter, 0 mSdLazyCounter, 4255 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2775 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 4283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-12-14 22:34:12,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2775 Valid, 2890 Invalid, 4283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 4255 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2021-12-14 22:34:12,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2021-12-14 22:34:12,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 3569. [2021-12-14 22:34:12,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3569 states, 2484 states have (on average 2.0426731078904994) internal successors, (5074), 3544 states have internal predecessors, (5074), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 22:34:12,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3569 states to 3569 states and 5124 transitions. [2021-12-14 22:34:12,635 INFO L78 Accepts]: Start accepts. Automaton has 3569 states and 5124 transitions. Word has length 7 [2021-12-14 22:34:12,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:34:12,637 INFO L470 AbstractCegarLoop]: Abstraction has 3569 states and 5124 transitions. [2021-12-14 22:34:12,637 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) [2021-12-14 22:34:12,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3569 states and 5124 transitions. [2021-12-14 22:34:12,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-14 22:34:12,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:34:12,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:34:12,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-14 22:34:12,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:34:12,845 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-12-14 22:34:12,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:34:12,847 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2021-12-14 22:34:12,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:34:12,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635989292] [2021-12-14 22:34:12,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:34:12,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:34:12,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:34:12,849 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) [2021-12-14 22:34:12,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-14 22:34:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:34:13,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 22:34:13,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:34:13,022 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 [2021-12-14 22:34:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:34:13,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:34:13,043 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:34:13,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635989292] [2021-12-14 22:34:13,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635989292] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:34:13,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:34:13,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 22:34:13,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134108884] [2021-12-14 22:34:13,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:34:13,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 22:34:13,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:34:13,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 22:34:13,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:34:13,047 INFO L87 Difference]: Start difference. First operand 3569 states and 5124 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) [2021-12-14 22:34:15,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:34:15,638 INFO L93 Difference]: Finished difference Result 4773 states and 6641 transitions. [2021-12-14 22:34:15,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 22:34:15,639 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 [2021-12-14 22:34:15,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:34:15,651 INFO L225 Difference]: With dead ends: 4773 [2021-12-14 22:34:15,651 INFO L226 Difference]: Without dead ends: 4773 [2021-12-14 22:34:15,652 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 [2021-12-14 22:34:15,652 INFO L933 BasicCegarLoop]: 2177 mSDtfsCounter, 1998 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-14 22:34:15,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2008 Valid, 2933 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-14 22:34:15,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4773 states. [2021-12-14 22:34:15,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4773 to 3478. [2021-12-14 22:34:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 2484 states have (on average 1.9569243156199678) internal successors, (4861), 3453 states have internal predecessors, (4861), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 22:34:15,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 4911 transitions. [2021-12-14 22:34:15,714 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 4911 transitions. Word has length 8 [2021-12-14 22:34:15,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:34:15,718 INFO L470 AbstractCegarLoop]: Abstraction has 3478 states and 4911 transitions. [2021-12-14 22:34:15,718 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) [2021-12-14 22:34:15,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 4911 transitions. [2021-12-14 22:34:15,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-14 22:34:15,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:34:15,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:34:15,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-14 22:34:15,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:34:15,926 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-12-14 22:34:15,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:34:15,926 INFO L85 PathProgramCache]: Analyzing trace with hash -305791725, now seen corresponding path program 1 times [2021-12-14 22:34:15,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:34:15,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602406305] [2021-12-14 22:34:15,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:34:15,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:34:15,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:34:15,928 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) [2021-12-14 22:34:15,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-14 22:34:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:34:16,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:34:16,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:34:16,073 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 [2021-12-14 22:34:16,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:34:16,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:34:16,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:34:16,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602406305] [2021-12-14 22:34:16,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602406305] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:34:16,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:34:16,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 22:34:16,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161426570] [2021-12-14 22:34:16,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:34:16,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 22:34:16,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:34:16,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 22:34:16,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:34:16,097 INFO L87 Difference]: Start difference. First operand 3478 states and 4911 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) [2021-12-14 22:34:19,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:34:19,700 INFO L93 Difference]: Finished difference Result 5193 states and 7269 transitions. [2021-12-14 22:34:19,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 22:34:19,700 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 [2021-12-14 22:34:19,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:34:19,714 INFO L225 Difference]: With dead ends: 5193 [2021-12-14 22:34:19,714 INFO L226 Difference]: Without dead ends: 5193 [2021-12-14 22:34:19,715 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 [2021-12-14 22:34:19,715 INFO L933 BasicCegarLoop]: 2557 mSDtfsCounter, 1369 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-14 22:34:19,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1373 Valid, 3648 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-14 22:34:19,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5193 states. [2021-12-14 22:34:19,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5193 to 3800. [2021-12-14 22:34:19,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3800 states, 2816 states have (on average 1.9435369318181819) internal successors, (5473), 3775 states have internal predecessors, (5473), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 22:34:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 5523 transitions. [2021-12-14 22:34:19,775 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 5523 transitions. Word has length 8 [2021-12-14 22:34:19,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:34:19,775 INFO L470 AbstractCegarLoop]: Abstraction has 3800 states and 5523 transitions. [2021-12-14 22:34:19,775 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) [2021-12-14 22:34:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 5523 transitions. [2021-12-14 22:34:19,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-14 22:34:19,776 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:34:19,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:34:19,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-14 22:34:19,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:34:19,983 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-12-14 22:34:19,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:34:19,984 INFO L85 PathProgramCache]: Analyzing trace with hash -690352907, now seen corresponding path program 1 times [2021-12-14 22:34:19,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:34:19,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030957053] [2021-12-14 22:34:19,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:34:19,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:34:19,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:34:19,985 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) [2021-12-14 22:34:19,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-14 22:34:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:34:20,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:34:20,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:34:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:34:20,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:34:20,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:34:20,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030957053] [2021-12-14 22:34:20,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030957053] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:34:20,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:34:20,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 22:34:20,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814617106] [2021-12-14 22:34:20,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:34:20,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 22:34:20,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:34:20,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 22:34:20,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:34:20,162 INFO L87 Difference]: Start difference. First operand 3800 states and 5523 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:20,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:34:20,212 INFO L93 Difference]: Finished difference Result 3740 states and 5437 transitions. [2021-12-14 22:34:20,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 22:34:20,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-14 22:34:20,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:34:20,226 INFO L225 Difference]: With dead ends: 3740 [2021-12-14 22:34:20,227 INFO L226 Difference]: Without dead ends: 3740 [2021-12-14 22:34:20,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:34:20,229 INFO L933 BasicCegarLoop]: 2221 mSDtfsCounter, 1011 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 3437 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 [2021-12-14 22:34:20,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 3437 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 22:34:20,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3740 states. [2021-12-14 22:34:20,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3740 to 3740. [2021-12-14 22:34:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3740 states, 2780 states have (on average 1.9377697841726618) internal successors, (5387), 3715 states have internal predecessors, (5387), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 22:34:20,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3740 states to 3740 states and 5437 transitions. [2021-12-14 22:34:20,278 INFO L78 Accepts]: Start accepts. Automaton has 3740 states and 5437 transitions. Word has length 11 [2021-12-14 22:34:20,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:34:20,278 INFO L470 AbstractCegarLoop]: Abstraction has 3740 states and 5437 transitions. [2021-12-14 22:34:20,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:20,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3740 states and 5437 transitions. [2021-12-14 22:34:20,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-14 22:34:20,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:34:20,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:34:20,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-14 22:34:20,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:34:20,488 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-12-14 22:34:20,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:34:20,488 INFO L85 PathProgramCache]: Analyzing trace with hash -2004126129, now seen corresponding path program 1 times [2021-12-14 22:34:20,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:34:20,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360969298] [2021-12-14 22:34:20,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:34:20,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:34:20,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:34:20,489 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) [2021-12-14 22:34:20,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-14 22:34:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:34:20,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 22:34:20,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:34:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:34:20,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:34:20,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:34:20,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360969298] [2021-12-14 22:34:20,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360969298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:34:20,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:34:20,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 22:34:20,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858878830] [2021-12-14 22:34:20,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:34:20,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 22:34:20,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:34:20,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 22:34:20,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 22:34:20,663 INFO L87 Difference]: Start difference. First operand 3740 states and 5437 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:20,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:34:20,767 INFO L93 Difference]: Finished difference Result 3712 states and 5381 transitions. [2021-12-14 22:34:20,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 22:34:20,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-14 22:34:20,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:34:20,781 INFO L225 Difference]: With dead ends: 3712 [2021-12-14 22:34:20,781 INFO L226 Difference]: Without dead ends: 3712 [2021-12-14 22:34:20,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 22:34:20,782 INFO L933 BasicCegarLoop]: 2176 mSDtfsCounter, 982 mSDsluCounter, 3385 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 5561 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 [2021-12-14 22:34:20,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 5561 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 22:34:20,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2021-12-14 22:34:20,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 3710. [2021-12-14 22:34:20,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3710 states, 2764 states have (on average 1.9280028943560057) internal successors, (5329), 3685 states have internal predecessors, (5329), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 22:34:20,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 5379 transitions. [2021-12-14 22:34:20,829 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 5379 transitions. Word has length 13 [2021-12-14 22:34:20,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:34:20,830 INFO L470 AbstractCegarLoop]: Abstraction has 3710 states and 5379 transitions. [2021-12-14 22:34:20,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 5379 transitions. [2021-12-14 22:34:20,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-14 22:34:20,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:34:20,831 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] [2021-12-14 22:34:20,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-14 22:34:21,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:34:21,039 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-12-14 22:34:21,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:34:21,040 INFO L85 PathProgramCache]: Analyzing trace with hash 445820063, now seen corresponding path program 1 times [2021-12-14 22:34:21,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:34:21,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279731226] [2021-12-14 22:34:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:34:21,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:34:21,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:34:21,042 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) [2021-12-14 22:34:21,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-14 22:34:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:34:21,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:34:21,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:34:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:34:21,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:34:21,239 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:34:21,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279731226] [2021-12-14 22:34:21,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279731226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:34:21,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:34:21,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 22:34:21,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181206283] [2021-12-14 22:34:21,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:34:21,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 22:34:21,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:34:21,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 22:34:21,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:34:21,241 INFO L87 Difference]: Start difference. First operand 3710 states and 5379 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:21,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:34:21,278 INFO L93 Difference]: Finished difference Result 5158 states and 6946 transitions. [2021-12-14 22:34:21,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 22:34:21,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-14 22:34:21,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:34:21,286 INFO L225 Difference]: With dead ends: 5158 [2021-12-14 22:34:21,287 INFO L226 Difference]: Without dead ends: 5158 [2021-12-14 22:34:21,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:34:21,287 INFO L933 BasicCegarLoop]: 3496 mSDtfsCounter, 2102 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 5112 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 [2021-12-14 22:34:21,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2112 Valid, 5112 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 22:34:21,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5158 states. [2021-12-14 22:34:21,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5158 to 3650. [2021-12-14 22:34:21,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 2728 states have (on average 1.9219208211143695) internal successors, (5243), 3625 states have internal predecessors, (5243), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 22:34:21,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5293 transitions. [2021-12-14 22:34:21,371 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5293 transitions. Word has length 20 [2021-12-14 22:34:21,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:34:21,372 INFO L470 AbstractCegarLoop]: Abstraction has 3650 states and 5293 transitions. [2021-12-14 22:34:21,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:21,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5293 transitions. [2021-12-14 22:34:21,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-14 22:34:21,373 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:34:21,374 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] [2021-12-14 22:34:21,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-14 22:34:21,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:34:21,583 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-12-14 22:34:21,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:34:21,583 INFO L85 PathProgramCache]: Analyzing trace with hash 591123743, now seen corresponding path program 1 times [2021-12-14 22:34:21,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:34:21,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682573894] [2021-12-14 22:34:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:34:21,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:34:21,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:34:21,585 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) [2021-12-14 22:34:21,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-14 22:34:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:34:21,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:34:21,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:34:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:34:21,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:34:21,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:34:21,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682573894] [2021-12-14 22:34:21,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682573894] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:34:21,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:34:21,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 22:34:21,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554372692] [2021-12-14 22:34:21,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:34:21,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 22:34:21,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:34:21,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 22:34:21,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:34:21,784 INFO L87 Difference]: Start difference. First operand 3650 states and 5293 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:21,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:34:21,817 INFO L93 Difference]: Finished difference Result 4991 states and 6655 transitions. [2021-12-14 22:34:21,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 22:34:21,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-14 22:34:21,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:34:21,825 INFO L225 Difference]: With dead ends: 4991 [2021-12-14 22:34:21,826 INFO L226 Difference]: Without dead ends: 4991 [2021-12-14 22:34:21,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:34:21,826 INFO L933 BasicCegarLoop]: 3628 mSDtfsCounter, 2059 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 5196 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 [2021-12-14 22:34:21,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2069 Valid, 5196 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 22:34:21,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4991 states. [2021-12-14 22:34:21,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4991 to 3518. [2021-12-14 22:34:21,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3518 states, 2620 states have (on average 1.9026717557251909) internal successors, (4985), 3493 states have internal predecessors, (4985), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 22:34:21,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3518 states to 3518 states and 5035 transitions. [2021-12-14 22:34:21,883 INFO L78 Accepts]: Start accepts. Automaton has 3518 states and 5035 transitions. Word has length 20 [2021-12-14 22:34:21,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:34:21,883 INFO L470 AbstractCegarLoop]: Abstraction has 3518 states and 5035 transitions. [2021-12-14 22:34:21,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:21,883 INFO L276 IsEmpty]: Start isEmpty. Operand 3518 states and 5035 transitions. [2021-12-14 22:34:21,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 22:34:21,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:34:21,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:34:21,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-14 22:34:22,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:34:22,103 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-12-14 22:34:22,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:34:22,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1063651591, now seen corresponding path program 1 times [2021-12-14 22:34:22,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:34:22,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995699347] [2021-12-14 22:34:22,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:34:22,104 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:34:22,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:34:22,105 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) [2021-12-14 22:34:22,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-14 22:34:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:34:22,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 22:34:22,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:34:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:34:22,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:34:22,319 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:34:22,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995699347] [2021-12-14 22:34:22,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995699347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:34:22,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:34:22,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 22:34:22,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587165220] [2021-12-14 22:34:22,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:34:22,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 22:34:22,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:34:22,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 22:34:22,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 22:34:22,321 INFO L87 Difference]: Start difference. First operand 3518 states and 5035 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:22,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:34:22,401 INFO L93 Difference]: Finished difference Result 4956 states and 6589 transitions. [2021-12-14 22:34:22,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 22:34:22,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-14 22:34:22,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:34:22,409 INFO L225 Difference]: With dead ends: 4956 [2021-12-14 22:34:22,409 INFO L226 Difference]: Without dead ends: 4956 [2021-12-14 22:34:22,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 22:34:22,410 INFO L933 BasicCegarLoop]: 3588 mSDtfsCounter, 2030 mSDsluCounter, 5154 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 8742 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 [2021-12-14 22:34:22,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2040 Valid, 8742 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 22:34:22,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2021-12-14 22:34:22,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 3488. [2021-12-14 22:34:22,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3488 states, 2604 states have (on average 1.892089093701997) internal successors, (4927), 3463 states have internal predecessors, (4927), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 22:34:22,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3488 states to 3488 states and 4977 transitions. [2021-12-14 22:34:22,450 INFO L78 Accepts]: Start accepts. Automaton has 3488 states and 4977 transitions. Word has length 22 [2021-12-14 22:34:22,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:34:22,450 INFO L470 AbstractCegarLoop]: Abstraction has 3488 states and 4977 transitions. [2021-12-14 22:34:22,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:22,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3488 states and 4977 transitions. [2021-12-14 22:34:22,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 22:34:22,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:34:22,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:34:22,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-14 22:34:22,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:34:22,659 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-12-14 22:34:22,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:34:22,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1134259450, now seen corresponding path program 1 times [2021-12-14 22:34:22,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:34:22,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753045972] [2021-12-14 22:34:22,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:34:22,660 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:34:22,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:34:22,660 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) [2021-12-14 22:34:22,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-14 22:34:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:34:22,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 22:34:22,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:34:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:34:22,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:34:22,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:34:22,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753045972] [2021-12-14 22:34:22,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753045972] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:34:22,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:34:22,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 22:34:22,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867168511] [2021-12-14 22:34:22,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:34:22,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 22:34:22,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:34:22,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 22:34:22,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 22:34:22,887 INFO L87 Difference]: Start difference. First operand 3488 states and 4977 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:22,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:34:22,967 INFO L93 Difference]: Finished difference Result 4883 states and 6400 transitions. [2021-12-14 22:34:22,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 22:34:22,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-14 22:34:22,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:34:22,976 INFO L225 Difference]: With dead ends: 4883 [2021-12-14 22:34:22,976 INFO L226 Difference]: Without dead ends: 4883 [2021-12-14 22:34:22,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 22:34:22,977 INFO L933 BasicCegarLoop]: 3513 mSDtfsCounter, 1995 mSDsluCounter, 5039 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 8552 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 [2021-12-14 22:34:22,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2005 Valid, 8552 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 22:34:22,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4883 states. [2021-12-14 22:34:23,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4883 to 3426. [2021-12-14 22:34:23,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 2556 states have (on average 1.859546165884194) internal successors, (4753), 3401 states have internal predecessors, (4753), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 22:34:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 4803 transitions. [2021-12-14 22:34:23,019 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 4803 transitions. Word has length 22 [2021-12-14 22:34:23,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:34:23,021 INFO L470 AbstractCegarLoop]: Abstraction has 3426 states and 4803 transitions. [2021-12-14 22:34:23,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:23,021 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 4803 transitions. [2021-12-14 22:34:23,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-14 22:34:23,022 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:34:23,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:34:23,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-14 22:34:23,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:34:23,230 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-12-14 22:34:23,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:34:23,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519613, now seen corresponding path program 1 times [2021-12-14 22:34:23,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:34:23,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156554864] [2021-12-14 22:34:23,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:34:23,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:34:23,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:34:23,232 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) [2021-12-14 22:34:23,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-14 22:34:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:34:23,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:34:23,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:34:23,416 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 [2021-12-14 22:34:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:34:23,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:34:23,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:34:23,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156554864] [2021-12-14 22:34:23,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156554864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:34:23,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:34:23,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 22:34:23,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588517542] [2021-12-14 22:34:23,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:34:23,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 22:34:23,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:34:23,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 22:34:23,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 22:34:23,476 INFO L87 Difference]: Start difference. First operand 3426 states and 4803 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:26,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:34:26,152 INFO L93 Difference]: Finished difference Result 3878 states and 5162 transitions. [2021-12-14 22:34:26,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 22:34:26,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-14 22:34:26,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:34:26,157 INFO L225 Difference]: With dead ends: 3878 [2021-12-14 22:34:26,157 INFO L226 Difference]: Without dead ends: 3878 [2021-12-14 22:34:26,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 22:34:26,158 INFO L933 BasicCegarLoop]: 1244 mSDtfsCounter, 2745 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2751 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-14 22:34:26,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2751 Valid, 2342 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-14 22:34:26,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2021-12-14 22:34:26,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3422. [2021-12-14 22:34:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3422 states, 2556 states have (on average 1.85641627543036) internal successors, (4745), 3397 states have internal predecessors, (4745), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 22:34:26,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 4795 transitions. [2021-12-14 22:34:26,188 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 4795 transitions. Word has length 27 [2021-12-14 22:34:26,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:34:26,189 INFO L470 AbstractCegarLoop]: Abstraction has 3422 states and 4795 transitions. [2021-12-14 22:34:26,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:26,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 4795 transitions. [2021-12-14 22:34:26,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-14 22:34:26,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:34:26,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:34:26,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-14 22:34:26,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:34:26,396 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-12-14 22:34:26,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:34:26,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519614, now seen corresponding path program 1 times [2021-12-14 22:34:26,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:34:26,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998971731] [2021-12-14 22:34:26,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:34:26,397 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:34:26,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:34:26,398 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) [2021-12-14 22:34:26,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-14 22:34:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:34:26,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 22:34:26,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:34:26,582 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 [2021-12-14 22:34:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:34:26,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:34:26,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:34:26,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998971731] [2021-12-14 22:34:26,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998971731] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:34:26,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:34:26,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 22:34:26,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133452485] [2021-12-14 22:34:26,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:34:26,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 22:34:26,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:34:26,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 22:34:26,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 22:34:26,716 INFO L87 Difference]: Start difference. First operand 3422 states and 4795 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:30,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:34:30,927 INFO L93 Difference]: Finished difference Result 4323 states and 5779 transitions. [2021-12-14 22:34:30,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 22:34:30,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-14 22:34:30,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:34:30,933 INFO L225 Difference]: With dead ends: 4323 [2021-12-14 22:34:30,933 INFO L226 Difference]: Without dead ends: 4323 [2021-12-14 22:34:30,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 22:34:30,933 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 1907 mSDsluCounter, 2163 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1907 SdHoareTripleChecker+Valid, 3817 SdHoareTripleChecker+Invalid, 2311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-14 22:34:30,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1907 Valid, 3817 Invalid, 2311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-14 22:34:30,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2021-12-14 22:34:30,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 3458. [2021-12-14 22:34:30,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 2592 states have (on average 1.8464506172839505) internal successors, (4786), 3433 states have internal predecessors, (4786), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 22:34:30,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4836 transitions. [2021-12-14 22:34:30,960 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4836 transitions. Word has length 27 [2021-12-14 22:34:30,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:34:30,961 INFO L470 AbstractCegarLoop]: Abstraction has 3458 states and 4836 transitions. [2021-12-14 22:34:30,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:30,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4836 transitions. [2021-12-14 22:34:30,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-14 22:34:30,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:34:30,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:34:30,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-14 22:34:31,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:34:31,169 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-12-14 22:34:31,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:34:31,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128551, now seen corresponding path program 1 times [2021-12-14 22:34:31,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:34:31,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835610039] [2021-12-14 22:34:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:34:31,170 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:34:31,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:34:31,171 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) [2021-12-14 22:34:31,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-14 22:34:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:34:31,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:34:31,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:34:31,350 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 [2021-12-14 22:34:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:34:31,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:34:31,410 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:34:31,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835610039] [2021-12-14 22:34:31,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835610039] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:34:31,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:34:31,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 22:34:31,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099107601] [2021-12-14 22:34:31,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:34:31,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 22:34:31,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:34:31,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 22:34:31,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 22:34:31,411 INFO L87 Difference]: Start difference. First operand 3458 states and 4836 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:35,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:34:35,565 INFO L93 Difference]: Finished difference Result 6686 states and 9193 transitions. [2021-12-14 22:34:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 22:34:35,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-14 22:34:35,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:34:35,572 INFO L225 Difference]: With dead ends: 6686 [2021-12-14 22:34:35,573 INFO L226 Difference]: Without dead ends: 6686 [2021-12-14 22:34:35,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 22:34:35,573 INFO L933 BasicCegarLoop]: 2703 mSDtfsCounter, 3693 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 2953 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3700 SdHoareTripleChecker+Valid, 4839 SdHoareTripleChecker+Invalid, 2996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-14 22:34:35,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3700 Valid, 4839 Invalid, 2996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2953 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-14 22:34:35,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6686 states. [2021-12-14 22:34:35,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6686 to 3454. [2021-12-14 22:34:35,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 2592 states have (on average 1.8433641975308641) internal successors, (4778), 3429 states have internal predecessors, (4778), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 22:34:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 4828 transitions. [2021-12-14 22:34:35,617 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 4828 transitions. Word has length 36 [2021-12-14 22:34:35,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:34:35,617 INFO L470 AbstractCegarLoop]: Abstraction has 3454 states and 4828 transitions. [2021-12-14 22:34:35,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:35,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 4828 transitions. [2021-12-14 22:34:35,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-14 22:34:35,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:34:35,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:34:35,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-14 22:34:35,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:34:35,825 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-12-14 22:34:35,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:34:35,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128552, now seen corresponding path program 1 times [2021-12-14 22:34:35,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:34:35,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700366262] [2021-12-14 22:34:35,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:34:35,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:34:35,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:34:35,827 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) [2021-12-14 22:34:35,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-14 22:34:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:34:36,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 22:34:36,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:34:36,031 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 [2021-12-14 22:34:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:34:36,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:34:36,195 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:34:36,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700366262] [2021-12-14 22:34:36,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700366262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:34:36,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:34:36,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 22:34:36,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630749228] [2021-12-14 22:34:36,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:34:36,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 22:34:36,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:34:36,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 22:34:36,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 22:34:36,196 INFO L87 Difference]: Start difference. First operand 3454 states and 4828 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:41,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:34:41,855 INFO L93 Difference]: Finished difference Result 6369 states and 8585 transitions. [2021-12-14 22:34:41,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 22:34:41,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-14 22:34:41,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:34:41,861 INFO L225 Difference]: With dead ends: 6369 [2021-12-14 22:34:41,861 INFO L226 Difference]: Without dead ends: 6369 [2021-12-14 22:34:41,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 22:34:41,862 INFO L933 BasicCegarLoop]: 2653 mSDtfsCounter, 3063 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 2951 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3067 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-14 22:34:41,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3067 Valid, 5267 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2951 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-12-14 22:34:41,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6369 states. [2021-12-14 22:34:41,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6369 to 3450. [2021-12-14 22:34:41,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3450 states, 2592 states have (on average 1.8402777777777777) internal successors, (4770), 3425 states have internal predecessors, (4770), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 22:34:41,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 4820 transitions. [2021-12-14 22:34:41,903 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 4820 transitions. Word has length 36 [2021-12-14 22:34:41,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:34:41,903 INFO L470 AbstractCegarLoop]: Abstraction has 3450 states and 4820 transitions. [2021-12-14 22:34:41,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:41,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 4820 transitions. [2021-12-14 22:34:41,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-14 22:34:41,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:34:41,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:34:41,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-14 22:34:42,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:34:42,112 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-12-14 22:34:42,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:34:42,112 INFO L85 PathProgramCache]: Analyzing trace with hash -526454297, now seen corresponding path program 1 times [2021-12-14 22:34:42,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:34:42,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277285207] [2021-12-14 22:34:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:34:42,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:34:42,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:34:42,114 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) [2021-12-14 22:34:42,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-14 22:34:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:34:42,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:34:42,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:34:42,300 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 [2021-12-14 22:34:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:34:42,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:34:42,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:34:42,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277285207] [2021-12-14 22:34:42,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277285207] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:34:42,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:34:42,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 22:34:42,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464012095] [2021-12-14 22:34:42,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:34:42,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 22:34:42,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:34:42,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 22:34:42,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 22:34:42,365 INFO L87 Difference]: Start difference. First operand 3450 states and 4820 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:46,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:34:46,802 INFO L93 Difference]: Finished difference Result 7130 states and 9705 transitions. [2021-12-14 22:34:46,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 22:34:46,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-14 22:34:46,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:34:46,810 INFO L225 Difference]: With dead ends: 7130 [2021-12-14 22:34:46,810 INFO L226 Difference]: Without dead ends: 7130 [2021-12-14 22:34:46,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 22:34:46,811 INFO L933 BasicCegarLoop]: 2271 mSDtfsCounter, 4685 mSDsluCounter, 2326 mSDsCounter, 0 mSdLazyCounter, 2965 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4695 SdHoareTripleChecker+Valid, 4597 SdHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-14 22:34:46,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4695 Valid, 4597 Invalid, 3016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2965 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-14 22:34:46,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7130 states. [2021-12-14 22:34:46,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7130 to 3447. [2021-12-14 22:34:46,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3447 states, 2592 states have (on average 1.8317901234567902) internal successors, (4748), 3422 states have internal predecessors, (4748), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 22:34:46,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 4798 transitions. [2021-12-14 22:34:46,868 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 4798 transitions. Word has length 36 [2021-12-14 22:34:46,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:34:46,868 INFO L470 AbstractCegarLoop]: Abstraction has 3447 states and 4798 transitions. [2021-12-14 22:34:46,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:46,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 4798 transitions. [2021-12-14 22:34:46,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-14 22:34:46,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:34:46,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:34:46,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-14 22:34:47,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:34:47,077 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-12-14 22:34:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:34:47,078 INFO L85 PathProgramCache]: Analyzing trace with hash -526454296, now seen corresponding path program 1 times [2021-12-14 22:34:47,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:34:47,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291344353] [2021-12-14 22:34:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:34:47,078 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:34:47,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:34:47,079 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) [2021-12-14 22:34:47,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-14 22:34:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:34:47,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 22:34:47,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:34:47,290 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 [2021-12-14 22:34:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:34:47,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:34:47,446 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:34:47,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291344353] [2021-12-14 22:34:47,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291344353] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:34:47,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:34:47,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 22:34:47,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103080848] [2021-12-14 22:34:47,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:34:47,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 22:34:47,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:34:47,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 22:34:47,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 22:34:47,448 INFO L87 Difference]: Start difference. First operand 3447 states and 4798 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:34:52,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:34:52,035 INFO L93 Difference]: Finished difference Result 5205 states and 6971 transitions. [2021-12-14 22:34:52,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 22:34:52,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-14 22:34:52,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:34:52,040 INFO L225 Difference]: With dead ends: 5205 [2021-12-14 22:34:52,040 INFO L226 Difference]: Without dead ends: 5205 [2021-12-14 22:34:52,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 22:34:52,040 INFO L933 BasicCegarLoop]: 2560 mSDtfsCounter, 2416 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 2623 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2416 SdHoareTripleChecker+Valid, 4747 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-14 22:34:52,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2416 Valid, 4747 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2623 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-12-14 22:34:52,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5205 states.