./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/lis-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f4b24e32 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/array-memsafety/lis-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 06:03:38,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 06:03:38,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 06:03:38,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 06:03:38,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 06:03:38,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 06:03:38,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 06:03:38,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 06:03:38,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 06:03:38,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 06:03:38,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 06:03:38,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 06:03:38,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 06:03:38,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 06:03:38,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 06:03:38,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 06:03:38,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 06:03:38,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 06:03:38,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 06:03:38,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 06:03:38,791 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 06:03:38,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 06:03:38,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 06:03:38,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 06:03:38,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 06:03:38,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 06:03:38,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 06:03:38,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 06:03:38,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 06:03:38,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 06:03:38,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 06:03:38,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 06:03:38,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 06:03:38,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 06:03:38,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 06:03:38,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 06:03:38,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 06:03:38,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 06:03:38,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 06:03:38,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 06:03:38,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 06:03:38,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 06:03:38,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-14 06:03:38,844 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 06:03:38,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 06:03:38,845 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 06:03:38,845 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 06:03:38,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 06:03:38,846 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 06:03:38,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 06:03:38,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 06:03:38,847 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 06:03:38,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 06:03:38,848 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 06:03:38,848 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 06:03:38,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 06:03:38,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 06:03:38,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 06:03:38,849 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-14 06:03:38,849 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-14 06:03:38,849 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-14 06:03:38,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 06:03:38,851 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 06:03:38,851 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 06:03:38,851 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 06:03:38,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 06:03:38,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 06:03:38,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 06:03:38,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 06:03:38,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 06:03:38,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 06:03:38,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 06:03:38,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 06:03:38,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf [2022-07-14 06:03:39,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 06:03:39,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 06:03:39,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 06:03:39,243 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 06:03:39,243 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 06:03:39,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2022-07-14 06:03:39,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf0c9bf98/d28055873fbd406594e942a7d57e4d36/FLAG34595db1f [2022-07-14 06:03:39,818 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 06:03:39,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2022-07-14 06:03:39,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf0c9bf98/d28055873fbd406594e942a7d57e4d36/FLAG34595db1f [2022-07-14 06:03:40,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf0c9bf98/d28055873fbd406594e942a7d57e4d36 [2022-07-14 06:03:40,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 06:03:40,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 06:03:40,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 06:03:40,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 06:03:40,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 06:03:40,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:03:40" (1/1) ... [2022-07-14 06:03:40,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186550c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:03:40, skipping insertion in model container [2022-07-14 06:03:40,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:03:40" (1/1) ... [2022-07-14 06:03:40,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 06:03:40,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 06:03:40,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:03:40,698 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-14 06:03:40,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74f5f472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:03:40, skipping insertion in model container [2022-07-14 06:03:40,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 06:03:40,699 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-14 06:03:40,701 INFO L158 Benchmark]: Toolchain (without parser) took 500.98ms. Allocated memory is still 100.7MB. Free memory was 70.2MB in the beginning and 74.9MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 06:03:40,701 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 100.7MB. Free memory is still 55.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 06:03:40,702 INFO L158 Benchmark]: CACSL2BoogieTranslator took 484.69ms. Allocated memory is still 100.7MB. Free memory was 69.9MB in the beginning and 74.9MB in the end (delta: -4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-14 06:03:40,703 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 100.7MB. Free memory is still 55.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 484.69ms. Allocated memory is still 100.7MB. Free memory was 69.9MB in the beginning and 74.9MB in the end (delta: -4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 515]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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/array-memsafety/lis-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 06:03:42,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 06:03:42,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 06:03:42,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 06:03:42,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 06:03:42,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 06:03:42,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 06:03:42,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 06:03:42,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 06:03:42,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 06:03:42,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 06:03:42,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 06:03:42,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 06:03:42,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 06:03:42,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 06:03:42,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 06:03:42,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 06:03:42,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 06:03:42,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 06:03:42,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 06:03:42,869 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 06:03:42,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 06:03:42,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 06:03:42,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 06:03:42,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 06:03:42,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 06:03:42,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 06:03:42,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 06:03:42,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 06:03:42,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 06:03:42,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 06:03:42,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 06:03:42,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 06:03:42,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 06:03:42,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 06:03:42,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 06:03:42,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 06:03:42,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 06:03:42,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 06:03:42,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 06:03:42,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 06:03:42,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 06:03:42,897 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-14 06:03:42,931 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 06:03:42,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 06:03:42,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 06:03:42,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 06:03:42,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 06:03:42,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 06:03:42,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 06:03:42,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 06:03:42,934 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 06:03:42,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 06:03:42,935 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 06:03:42,935 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 06:03:42,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 06:03:42,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 06:03:42,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 06:03:42,936 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-14 06:03:42,936 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-14 06:03:42,936 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-14 06:03:42,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 06:03:42,937 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 06:03:42,937 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-14 06:03:42,937 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-14 06:03:42,937 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 06:03:42,937 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 06:03:42,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 06:03:42,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 06:03:42,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 06:03:42,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 06:03:42,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 06:03:42,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 06:03:42,939 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-14 06:03:42,939 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-14 06:03:42,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-14 06:03:42,939 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf [2022-07-14 06:03:43,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 06:03:43,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 06:03:43,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 06:03:43,316 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 06:03:43,317 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 06:03:43,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2022-07-14 06:03:43,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898226045/a78b6b8dc38d479cbe5a4dd4cde540d9/FLAGf0cf90ae9 [2022-07-14 06:03:43,917 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 06:03:43,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2022-07-14 06:03:43,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898226045/a78b6b8dc38d479cbe5a4dd4cde540d9/FLAGf0cf90ae9 [2022-07-14 06:03:44,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898226045/a78b6b8dc38d479cbe5a4dd4cde540d9 [2022-07-14 06:03:44,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 06:03:44,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 06:03:44,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 06:03:44,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 06:03:44,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 06:03:44,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:03:44" (1/1) ... [2022-07-14 06:03:44,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c6d87a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:03:44, skipping insertion in model container [2022-07-14 06:03:44,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:03:44" (1/1) ... [2022-07-14 06:03:44,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 06:03:44,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 06:03:44,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:03:44,724 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-14 06:03:44,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 06:03:44,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:03:44,786 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 06:03:44,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:03:44,855 INFO L208 MainTranslator]: Completed translation [2022-07-14 06:03:44,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:03:44 WrapperNode [2022-07-14 06:03:44,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 06:03:44,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 06:03:44,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 06:03:44,858 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 06:03:44,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:03:44" (1/1) ... [2022-07-14 06:03:44,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:03:44" (1/1) ... [2022-07-14 06:03:44,931 INFO L137 Inliner]: procedures = 117, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 114 [2022-07-14 06:03:44,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 06:03:44,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 06:03:44,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 06:03:44,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 06:03:44,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:03:44" (1/1) ... [2022-07-14 06:03:44,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:03:44" (1/1) ... [2022-07-14 06:03:44,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:03:44" (1/1) ... [2022-07-14 06:03:44,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:03:44" (1/1) ... [2022-07-14 06:03:44,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:03:44" (1/1) ... [2022-07-14 06:03:44,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:03:44" (1/1) ... [2022-07-14 06:03:44,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:03:44" (1/1) ... [2022-07-14 06:03:44,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 06:03:44,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 06:03:44,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 06:03:44,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 06:03:45,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:03:44" (1/1) ... [2022-07-14 06:03:45,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 06:03:45,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 06:03:45,033 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) [2022-07-14 06:03:45,043 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 [2022-07-14 06:03:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-14 06:03:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 06:03:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 06:03:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-14 06:03:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 06:03:45,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 06:03:45,193 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 06:03:45,194 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 06:03:45,753 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 06:03:45,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 06:03:45,758 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-14 06:03:45,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:03:45 BoogieIcfgContainer [2022-07-14 06:03:45,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 06:03:45,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 06:03:45,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 06:03:45,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 06:03:45,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 06:03:44" (1/3) ... [2022-07-14 06:03:45,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5832ea8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 06:03:45, skipping insertion in model container [2022-07-14 06:03:45,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:03:44" (2/3) ... [2022-07-14 06:03:45,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5832ea8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 06:03:45, skipping insertion in model container [2022-07-14 06:03:45,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:03:45" (3/3) ... [2022-07-14 06:03:45,774 INFO L111 eAbstractionObserver]: Analyzing ICFG lis-alloca-1.i [2022-07-14 06:03:45,789 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 06:03:45,790 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2022-07-14 06:03:45,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 06:03:45,857 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7d9be033, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@654c2af6 [2022-07-14 06:03:45,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-07-14 06:03:45,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 41 states have (on average 1.951219512195122) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:45,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 06:03:45,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:03:45,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-14 06:03:45,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:03:45,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:03:45,874 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2022-07-14 06:03:45,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:03:45,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279413429] [2022-07-14 06:03:45,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:03:45,887 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:03:45,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:03:45,893 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) [2022-07-14 06:03:45,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-14 06:03:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:03:45,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 06:03:45,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:03:46,045 INFO L390 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 [2022-07-14 06:03:46,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:03:46,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:03:46,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:03:46,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279413429] [2022-07-14 06:03:46,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279413429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:03:46,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:03:46,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 06:03:46,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705650042] [2022-07-14 06:03:46,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:03:46,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 06:03:46,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:03:46,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 06:03:46,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:03:46,103 INFO L87 Difference]: Start difference. First operand has 67 states, 41 states have (on average 1.951219512195122) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:03:46,277 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2022-07-14 06:03:46,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 06:03:46,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-07-14 06:03:46,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:03:46,302 INFO L225 Difference]: With dead ends: 66 [2022-07-14 06:03:46,303 INFO L226 Difference]: Without dead ends: 64 [2022-07-14 06:03:46,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:03:46,311 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 62 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:03:46,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 51 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 06:03:46,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-14 06:03:46,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-07-14 06:03:46,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.8) internal successors, (72), 63 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:46,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2022-07-14 06:03:46,355 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 6 [2022-07-14 06:03:46,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:03:46,356 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2022-07-14 06:03:46,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:46,356 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2022-07-14 06:03:46,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 06:03:46,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:03:46,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-14 06:03:46,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-14 06:03:46,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:03:46,567 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:03:46,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:03:46,567 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2022-07-14 06:03:46,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:03:46,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796301922] [2022-07-14 06:03:46,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:03:46,568 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:03:46,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:03:46,569 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) [2022-07-14 06:03:46,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-14 06:03:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:03:46,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 06:03:46,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:03:46,640 INFO L390 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 [2022-07-14 06:03:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:03:46,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:03:46,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:03:46,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796301922] [2022-07-14 06:03:46,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796301922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:03:46,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:03:46,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 06:03:46,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482160134] [2022-07-14 06:03:46,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:03:46,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:03:46,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:03:46,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:03:46,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:03:46,669 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:47,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:03:47,070 INFO L93 Difference]: Finished difference Result 129 states and 144 transitions. [2022-07-14 06:03:47,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 06:03:47,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-07-14 06:03:47,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:03:47,072 INFO L225 Difference]: With dead ends: 129 [2022-07-14 06:03:47,073 INFO L226 Difference]: Without dead ends: 129 [2022-07-14 06:03:47,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:03:47,074 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 73 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 06:03:47,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 275 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 06:03:47,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-14 06:03:47,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 67. [2022-07-14 06:03:47,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.744186046511628) internal successors, (75), 66 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2022-07-14 06:03:47,082 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 6 [2022-07-14 06:03:47,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:03:47,083 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2022-07-14 06:03:47,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2022-07-14 06:03:47,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 06:03:47,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:03:47,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-14 06:03:47,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-14 06:03:47,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:03:47,299 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:03:47,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:03:47,300 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2022-07-14 06:03:47,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:03:47,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398110158] [2022-07-14 06:03:47,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:03:47,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:03:47,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:03:47,303 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) [2022-07-14 06:03:47,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-14 06:03:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:03:47,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 06:03:47,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:03:47,433 INFO L390 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 8 treesize of output 7 [2022-07-14 06:03:47,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:03:47,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:03:47,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:03:47,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398110158] [2022-07-14 06:03:47,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398110158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:03:47,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:03:47,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 06:03:47,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784667326] [2022-07-14 06:03:47,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:03:47,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:03:47,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:03:47,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:03:47,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:03:47,516 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:47,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:03:47,548 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2022-07-14 06:03:47,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 06:03:47,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-07-14 06:03:47,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:03:47,550 INFO L225 Difference]: With dead ends: 69 [2022-07-14 06:03:47,550 INFO L226 Difference]: Without dead ends: 69 [2022-07-14 06:03:47,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:03:47,551 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 1 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:03:47,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 174 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 29 Unchecked, 0.0s Time] [2022-07-14 06:03:47,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-07-14 06:03:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2022-07-14 06:03:47,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 44 states have (on average 1.75) internal successors, (77), 67 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:47,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2022-07-14 06:03:47,561 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 6 [2022-07-14 06:03:47,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:03:47,561 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2022-07-14 06:03:47,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:47,562 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2022-07-14 06:03:47,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-14 06:03:47,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:03:47,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:03:47,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-14 06:03:47,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:03:47,772 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:03:47,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:03:47,773 INFO L85 PathProgramCache]: Analyzing trace with hash 176742579, now seen corresponding path program 1 times [2022-07-14 06:03:47,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:03:47,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955093115] [2022-07-14 06:03:47,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:03:47,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:03:47,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:03:47,780 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) [2022-07-14 06:03:47,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-14 06:03:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:03:47,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 06:03:47,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:03:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:03:47,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:03:47,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:03:47,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955093115] [2022-07-14 06:03:47,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955093115] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:03:47,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:03:47,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 06:03:47,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550233172] [2022-07-14 06:03:47,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:03:47,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:03:47,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:03:47,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:03:47,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:03:47,887 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2022-07-14 06:03:47,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:03:47,931 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2022-07-14 06:03:47,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 06:03:47,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2022-07-14 06:03:47,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:03:47,933 INFO L225 Difference]: With dead ends: 70 [2022-07-14 06:03:47,933 INFO L226 Difference]: Without dead ends: 70 [2022-07-14 06:03:47,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:03:47,934 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 71 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:03:47,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 129 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:03:47,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-14 06:03:47,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2022-07-14 06:03:47,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 65 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:47,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2022-07-14 06:03:47,939 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 8 [2022-07-14 06:03:47,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:03:47,939 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2022-07-14 06:03:47,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2022-07-14 06:03:47,940 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2022-07-14 06:03:47,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-14 06:03:47,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:03:47,940 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:03:47,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-14 06:03:48,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:03:48,152 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:03:48,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:03:48,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2022-07-14 06:03:48,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:03:48,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811530836] [2022-07-14 06:03:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:03:48,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:03:48,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:03:48,154 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) [2022-07-14 06:03:48,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-14 06:03:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:03:48,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 06:03:48,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:03:48,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:03:48,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:03:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:03:48,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:03:48,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811530836] [2022-07-14 06:03:48,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811530836] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:03:48,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:03:48,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-14 06:03:48,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430157541] [2022-07-14 06:03:48,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:03:48,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 06:03:48,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:03:48,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 06:03:48,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:03:48,278 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:03:48,373 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2022-07-14 06:03:48,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:03:48,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-14 06:03:48,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:03:48,376 INFO L225 Difference]: With dead ends: 127 [2022-07-14 06:03:48,376 INFO L226 Difference]: Without dead ends: 127 [2022-07-14 06:03:48,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:03:48,377 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 317 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:03:48,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 255 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 06:03:48,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-07-14 06:03:48,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 72. [2022-07-14 06:03:48,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 71 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:48,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2022-07-14 06:03:48,382 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 10 [2022-07-14 06:03:48,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:03:48,383 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2022-07-14 06:03:48,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:48,383 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2022-07-14 06:03:48,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-14 06:03:48,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:03:48,384 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:03:48,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-14 06:03:48,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:03:48,593 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:03:48,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:03:48,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2022-07-14 06:03:48,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:03:48,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370104929] [2022-07-14 06:03:48,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:03:48,594 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:03:48,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:03:48,596 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) [2022-07-14 06:03:48,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-14 06:03:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:03:48,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-14 06:03:48,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:03:48,656 INFO L390 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 8 treesize of output 7 [2022-07-14 06:03:48,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:03:48,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:03:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:03:49,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:03:49,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370104929] [2022-07-14 06:03:49,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [370104929] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:03:49,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:03:49,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-07-14 06:03:49,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156920054] [2022-07-14 06:03:49,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:03:49,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 06:03:49,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:03:49,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 06:03:49,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-14 06:03:49,279 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:50,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:03:50,098 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2022-07-14 06:03:50,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 06:03:50,101 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-14 06:03:50,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:03:50,102 INFO L225 Difference]: With dead ends: 135 [2022-07-14 06:03:50,102 INFO L226 Difference]: Without dead ends: 135 [2022-07-14 06:03:50,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-14 06:03:50,103 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 324 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-14 06:03:50,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 267 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 152 Invalid, 0 Unknown, 5 Unchecked, 0.8s Time] [2022-07-14 06:03:50,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-07-14 06:03:50,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 80. [2022-07-14 06:03:50,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.6071428571428572) internal successors, (90), 79 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2022-07-14 06:03:50,110 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 10 [2022-07-14 06:03:50,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:03:50,111 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2022-07-14 06:03:50,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:50,111 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2022-07-14 06:03:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-14 06:03:50,111 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:03:50,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:03:50,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-14 06:03:50,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:03:50,325 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:03:50,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:03:50,325 INFO L85 PathProgramCache]: Analyzing trace with hash -680998152, now seen corresponding path program 1 times [2022-07-14 06:03:50,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:03:50,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678519876] [2022-07-14 06:03:50,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:03:50,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:03:50,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:03:50,327 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) [2022-07-14 06:03:50,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-14 06:03:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:03:50,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 06:03:50,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:03:50,432 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-14 06:03:50,433 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-07-14 06:03:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 06:03:50,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:03:50,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:03:50,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678519876] [2022-07-14 06:03:50,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678519876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:03:50,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:03:50,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 06:03:50,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372111789] [2022-07-14 06:03:50,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:03:50,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 06:03:50,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:03:50,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 06:03:50,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:03:50,452 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:50,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:03:50,570 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2022-07-14 06:03:50,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 06:03:50,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-07-14 06:03:50,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:03:50,572 INFO L225 Difference]: With dead ends: 73 [2022-07-14 06:03:50,573 INFO L226 Difference]: Without dead ends: 73 [2022-07-14 06:03:50,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:03:50,574 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 49 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:03:50,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 49 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 06:03:50,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-14 06:03:50,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-07-14 06:03:50,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2022-07-14 06:03:50,583 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 12 [2022-07-14 06:03:50,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:03:50,583 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2022-07-14 06:03:50,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:50,584 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2022-07-14 06:03:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-14 06:03:50,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:03:50,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:03:50,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-14 06:03:50,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:03:50,796 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:03:50,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:03:50,796 INFO L85 PathProgramCache]: Analyzing trace with hash -680998151, now seen corresponding path program 1 times [2022-07-14 06:03:50,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:03:50,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211934814] [2022-07-14 06:03:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:03:50,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:03:50,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:03:50,798 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) [2022-07-14 06:03:50,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-14 06:03:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:03:50,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 06:03:50,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:03:50,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:03:50,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-07-14 06:03:50,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-14 06:03:50,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 06:03:50,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:03:50,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:03:50,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211934814] [2022-07-14 06:03:50,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211934814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:03:50,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:03:50,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 06:03:50,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208035557] [2022-07-14 06:03:50,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:03:50,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:03:50,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:03:50,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:03:50,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:03:50,916 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:51,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:03:51,136 INFO L93 Difference]: Finished difference Result 128 states and 145 transitions. [2022-07-14 06:03:51,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 06:03:51,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-07-14 06:03:51,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:03:51,138 INFO L225 Difference]: With dead ends: 128 [2022-07-14 06:03:51,138 INFO L226 Difference]: Without dead ends: 128 [2022-07-14 06:03:51,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:03:51,139 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 66 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:03:51,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 139 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 06:03:51,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-07-14 06:03:51,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 76. [2022-07-14 06:03:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 59 states have (on average 1.4745762711864407) internal successors, (87), 75 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:51,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2022-07-14 06:03:51,144 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 12 [2022-07-14 06:03:51,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:03:51,144 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2022-07-14 06:03:51,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:51,145 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2022-07-14 06:03:51,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-14 06:03:51,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:03:51,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:03:51,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-14 06:03:51,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:03:51,354 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:03:51,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:03:51,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1074025161, now seen corresponding path program 1 times [2022-07-14 06:03:51,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:03:51,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847027612] [2022-07-14 06:03:51,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:03:51,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:03:51,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:03:51,356 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) [2022-07-14 06:03:51,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-14 06:03:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:03:51,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 06:03:51,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:03:51,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:03:51,458 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2022-07-14 06:03:51,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-14 06:03:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 06:03:51,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:03:51,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:03:51,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847027612] [2022-07-14 06:03:51,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847027612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:03:51,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:03:51,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 06:03:51,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022887852] [2022-07-14 06:03:51,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:03:51,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 06:03:51,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:03:51,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 06:03:51,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:03:51,522 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:51,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:03:51,751 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2022-07-14 06:03:51,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 06:03:51,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-07-14 06:03:51,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:03:51,753 INFO L225 Difference]: With dead ends: 118 [2022-07-14 06:03:51,753 INFO L226 Difference]: Without dead ends: 118 [2022-07-14 06:03:51,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-14 06:03:51,754 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 51 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:03:51,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 159 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 41 Unchecked, 0.2s Time] [2022-07-14 06:03:51,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-07-14 06:03:51,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 75. [2022-07-14 06:03:51,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 58 states have (on average 1.4827586206896552) internal successors, (86), 74 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:51,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2022-07-14 06:03:51,758 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 12 [2022-07-14 06:03:51,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:03:51,758 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2022-07-14 06:03:51,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:51,758 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2022-07-14 06:03:51,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-14 06:03:51,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:03:51,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:03:51,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-14 06:03:51,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:03:51,968 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:03:51,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:03:51,968 INFO L85 PathProgramCache]: Analyzing trace with hash 363893777, now seen corresponding path program 1 times [2022-07-14 06:03:51,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:03:51,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894760553] [2022-07-14 06:03:51,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:03:51,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:03:51,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:03:51,975 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) [2022-07-14 06:03:51,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-14 06:03:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:03:52,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 06:03:52,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:03:52,060 INFO L356 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-07-14 06:03:52,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 18 [2022-07-14 06:03:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 06:03:52,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:03:52,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:03:52,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894760553] [2022-07-14 06:03:52,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894760553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:03:52,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:03:52,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 06:03:52,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814232656] [2022-07-14 06:03:52,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:03:52,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 06:03:52,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:03:52,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 06:03:52,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:03:52,076 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:52,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:03:52,207 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2022-07-14 06:03:52,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 06:03:52,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-14 06:03:52,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:03:52,208 INFO L225 Difference]: With dead ends: 73 [2022-07-14 06:03:52,208 INFO L226 Difference]: Without dead ends: 73 [2022-07-14 06:03:52,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:03:52,209 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 46 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:03:52,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 54 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 06:03:52,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-14 06:03:52,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-07-14 06:03:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 72 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2022-07-14 06:03:52,212 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 13 [2022-07-14 06:03:52,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:03:52,212 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2022-07-14 06:03:52,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:52,212 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2022-07-14 06:03:52,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-14 06:03:52,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:03:52,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:03:52,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-14 06:03:52,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:03:52,419 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:03:52,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:03:52,420 INFO L85 PathProgramCache]: Analyzing trace with hash 363893778, now seen corresponding path program 1 times [2022-07-14 06:03:52,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:03:52,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314553079] [2022-07-14 06:03:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:03:52,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:03:52,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:03:52,421 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) [2022-07-14 06:03:52,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-14 06:03:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:03:52,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 06:03:52,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:03:52,542 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-14 06:03:52,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-14 06:03:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 06:03:52,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:03:52,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:03:52,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314553079] [2022-07-14 06:03:52,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314553079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:03:52,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:03:52,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 06:03:52,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964971833] [2022-07-14 06:03:52,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:03:52,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:03:52,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:03:52,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:03:52,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:03:52,582 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) 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) [2022-07-14 06:03:52,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:03:52,855 INFO L93 Difference]: Finished difference Result 124 states and 142 transitions. [2022-07-14 06:03:52,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 06:03:52,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) 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 [2022-07-14 06:03:52,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:03:52,856 INFO L225 Difference]: With dead ends: 124 [2022-07-14 06:03:52,856 INFO L226 Difference]: Without dead ends: 124 [2022-07-14 06:03:52,857 INFO L412 NwaCegarLoop]: 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 [2022-07-14 06:03:52,857 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 59 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:03:52,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 133 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 06:03:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-07-14 06:03:52,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 77. [2022-07-14 06:03:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.435483870967742) internal successors, (89), 76 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2022-07-14 06:03:52,860 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 13 [2022-07-14 06:03:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:03:52,860 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2022-07-14 06:03:52,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) 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) [2022-07-14 06:03:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2022-07-14 06:03:52,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-14 06:03:52,860 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:03:52,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:03:52,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-14 06:03:53,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:03:53,070 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:03:53,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:03:53,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958356, now seen corresponding path program 1 times [2022-07-14 06:03:53,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:03:53,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142183306] [2022-07-14 06:03:53,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:03:53,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:03:53,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:03:53,072 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) [2022-07-14 06:03:53,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-14 06:03:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:03:53,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-14 06:03:53,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:03:53,172 INFO L356 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-07-14 06:03:53,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2022-07-14 06:03:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 06:03:53,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:03:53,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:03:53,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142183306] [2022-07-14 06:03:53,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142183306] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:03:53,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:03:53,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 06:03:53,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776768522] [2022-07-14 06:03:53,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:03:53,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 06:03:53,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:03:53,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 06:03:53,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:03:53,245 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:53,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:03:53,490 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2022-07-14 06:03:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:03:53,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-14 06:03:53,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:03:53,492 INFO L225 Difference]: With dead ends: 117 [2022-07-14 06:03:53,492 INFO L226 Difference]: Without dead ends: 117 [2022-07-14 06:03:53,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-14 06:03:53,493 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 50 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:03:53,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 149 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 43 Unchecked, 0.2s Time] [2022-07-14 06:03:53,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-14 06:03:53,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 74. [2022-07-14 06:03:53,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.4406779661016949) internal successors, (85), 73 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:53,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2022-07-14 06:03:53,496 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 13 [2022-07-14 06:03:53,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:03:53,496 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2022-07-14 06:03:53,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:53,496 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2022-07-14 06:03:53,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-14 06:03:53,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:03:53,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:03:53,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-14 06:03:53,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:03:53,706 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:03:53,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:03:53,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1808065813, now seen corresponding path program 1 times [2022-07-14 06:03:53,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:03:53,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529348167] [2022-07-14 06:03:53,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:03:53,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:03:53,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:03:53,709 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) [2022-07-14 06:03:53,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-14 06:03:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:03:53,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 06:03:53,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:03:53,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 06:03:53,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:03:53,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:03:53,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529348167] [2022-07-14 06:03:53,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529348167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:03:53,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:03:53,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 06:03:53,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32589967] [2022-07-14 06:03:53,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:03:53,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:03:53,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:03:53,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:03:53,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:03:53,802 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:54,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:03:54,099 INFO L93 Difference]: Finished difference Result 124 states and 141 transitions. [2022-07-14 06:03:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 06:03:54,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-14 06:03:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:03:54,101 INFO L225 Difference]: With dead ends: 124 [2022-07-14 06:03:54,101 INFO L226 Difference]: Without dead ends: 124 [2022-07-14 06:03:54,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:03:54,102 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 58 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:03:54,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 208 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 06:03:54,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-07-14 06:03:54,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 76. [2022-07-14 06:03:54,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 75 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:54,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2022-07-14 06:03:54,105 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 15 [2022-07-14 06:03:54,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:03:54,106 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2022-07-14 06:03:54,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:54,106 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2022-07-14 06:03:54,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-14 06:03:54,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:03:54,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:03:54,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-14 06:03:54,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:03:54,307 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:03:54,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:03:54,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1221259799, now seen corresponding path program 1 times [2022-07-14 06:03:54,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:03:54,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565253615] [2022-07-14 06:03:54,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:03:54,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:03:54,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:03:54,310 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) [2022-07-14 06:03:54,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-14 06:03:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:03:54,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 06:03:54,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:03:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:03:54,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:03:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:03:54,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:03:54,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565253615] [2022-07-14 06:03:54,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565253615] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:03:54,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:03:54,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-07-14 06:03:54,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950323482] [2022-07-14 06:03:54,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:03:54,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 06:03:54,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:03:54,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 06:03:54,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-07-14 06:03:54,597 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:55,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:03:55,116 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2022-07-14 06:03:55,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 06:03:55,118 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-14 06:03:55,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:03:55,118 INFO L225 Difference]: With dead ends: 126 [2022-07-14 06:03:55,118 INFO L226 Difference]: Without dead ends: 126 [2022-07-14 06:03:55,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-07-14 06:03:55,119 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 375 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 06:03:55,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 170 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 06:03:55,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-14 06:03:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 74. [2022-07-14 06:03:55,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.423728813559322) internal successors, (84), 73 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:55,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2022-07-14 06:03:55,122 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 15 [2022-07-14 06:03:55,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:03:55,122 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2022-07-14 06:03:55,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:55,123 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2022-07-14 06:03:55,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-14 06:03:55,123 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:03:55,123 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:03:55,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-14 06:03:55,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:03:55,333 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:03:55,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:03:55,333 INFO L85 PathProgramCache]: Analyzing trace with hash 262068158, now seen corresponding path program 1 times [2022-07-14 06:03:55,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:03:55,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398956741] [2022-07-14 06:03:55,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:03:55,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:03:55,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:03:55,335 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) [2022-07-14 06:03:55,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-14 06:03:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:03:55,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 06:03:55,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:03:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 06:03:55,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:03:55,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 06:03:55,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:03:55,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398956741] [2022-07-14 06:03:55,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398956741] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:03:55,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:03:55,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-14 06:03:55,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844449407] [2022-07-14 06:03:55,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:03:55,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 06:03:55,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:03:55,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 06:03:55,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:03:55,539 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:55,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:03:55,747 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2022-07-14 06:03:55,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:03:55,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-14 06:03:55,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:03:55,750 INFO L225 Difference]: With dead ends: 96 [2022-07-14 06:03:55,750 INFO L226 Difference]: Without dead ends: 96 [2022-07-14 06:03:55,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-14 06:03:55,751 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 53 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:03:55,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 222 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 06:03:55,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-07-14 06:03:55,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2022-07-14 06:03:55,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 89 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:55,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2022-07-14 06:03:55,754 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 16 [2022-07-14 06:03:55,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:03:55,754 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2022-07-14 06:03:55,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:55,755 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2022-07-14 06:03:55,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-14 06:03:55,755 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:03:55,755 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:03:55,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-14 06:03:55,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:03:55,960 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:03:55,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:03:55,960 INFO L85 PathProgramCache]: Analyzing trace with hash -749049092, now seen corresponding path program 1 times [2022-07-14 06:03:55,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:03:55,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987271769] [2022-07-14 06:03:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:03:55,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:03:55,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:03:55,962 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) [2022-07-14 06:03:55,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-14 06:03:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:03:56,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 06:03:56,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:03:56,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:03:56,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:03:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:03:56,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:03:56,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987271769] [2022-07-14 06:03:56,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987271769] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:03:56,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:03:56,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2022-07-14 06:03:56,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69363454] [2022-07-14 06:03:56,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:03:56,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 06:03:56,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:03:56,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 06:03:56,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-14 06:03:56,273 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:56,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:03:56,759 INFO L93 Difference]: Finished difference Result 112 states and 125 transitions. [2022-07-14 06:03:56,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 06:03:56,760 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-14 06:03:56,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:03:56,761 INFO L225 Difference]: With dead ends: 112 [2022-07-14 06:03:56,761 INFO L226 Difference]: Without dead ends: 112 [2022-07-14 06:03:56,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-14 06:03:56,762 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 147 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:03:56,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 349 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 06:03:56,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-07-14 06:03:56,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 90. [2022-07-14 06:03:56,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 89 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:56,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2022-07-14 06:03:56,765 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 16 [2022-07-14 06:03:56,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:03:56,765 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2022-07-14 06:03:56,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:03:56,766 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2022-07-14 06:03:56,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-14 06:03:56,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:03:56,766 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2022-07-14 06:03:56,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-14 06:03:56,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:03:56,975 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:03:56,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:03:56,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1817992175, now seen corresponding path program 2 times [2022-07-14 06:03:56,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:03:56,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615255376] [2022-07-14 06:03:56,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 06:03:56,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:03:56,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:03:56,977 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) [2022-07-14 06:03:56,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-14 06:03:57,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 06:03:57,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:03:57,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 06:03:57,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:03:57,069 INFO L390 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 8 treesize of output 7 [2022-07-14 06:03:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:03:57,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:03:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:03:58,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:03:58,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615255376] [2022-07-14 06:03:58,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615255376] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:03:58,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:03:58,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-07-14 06:03:58,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350747825] [2022-07-14 06:03:58,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:03:58,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-14 06:03:58,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:03:58,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-14 06:03:58,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-07-14 06:03:58,287 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:01,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:04:01,263 INFO L93 Difference]: Finished difference Result 212 states and 238 transitions. [2022-07-14 06:04:01,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-14 06:04:01,264 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-14 06:04:01,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:04:01,265 INFO L225 Difference]: With dead ends: 212 [2022-07-14 06:04:01,265 INFO L226 Difference]: Without dead ends: 212 [2022-07-14 06:04:01,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2022-07-14 06:04:01,266 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 427 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-14 06:04:01,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 619 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 464 Invalid, 0 Unknown, 9 Unchecked, 1.7s Time] [2022-07-14 06:04:01,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-14 06:04:01,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 106. [2022-07-14 06:04:01,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 91 states have (on average 1.3516483516483517) internal successors, (123), 105 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:01,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2022-07-14 06:04:01,269 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 18 [2022-07-14 06:04:01,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:04:01,270 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2022-07-14 06:04:01,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:01,270 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2022-07-14 06:04:01,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-14 06:04:01,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:04:01,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:04:01,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-14 06:04:01,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:04:01,479 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:04:01,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:04:01,479 INFO L85 PathProgramCache]: Analyzing trace with hash -302012765, now seen corresponding path program 1 times [2022-07-14 06:04:01,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:04:01,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103733869] [2022-07-14 06:04:01,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:04:01,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:04:01,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:04:01,481 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:04:01,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-14 06:04:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:04:01,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 06:04:01,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:04:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 06:04:01,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:04:01,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-07-14 06:04:01,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 06:04:01,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:04:01,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103733869] [2022-07-14 06:04:01,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103733869] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:04:01,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:04:01,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-07-14 06:04:01,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599460306] [2022-07-14 06:04:01,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:04:01,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 06:04:01,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:04:01,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 06:04:01,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:04:01,857 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:02,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:04:02,485 INFO L93 Difference]: Finished difference Result 163 states and 187 transitions. [2022-07-14 06:04:02,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:04:02,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2022-07-14 06:04:02,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:04:02,487 INFO L225 Difference]: With dead ends: 163 [2022-07-14 06:04:02,487 INFO L226 Difference]: Without dead ends: 163 [2022-07-14 06:04:02,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-14 06:04:02,487 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 165 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 06:04:02,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 157 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 06:04:02,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-07-14 06:04:02,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 117. [2022-07-14 06:04:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 103 states have (on average 1.3689320388349515) internal successors, (141), 116 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 141 transitions. [2022-07-14 06:04:02,490 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 141 transitions. Word has length 20 [2022-07-14 06:04:02,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:04:02,491 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 141 transitions. [2022-07-14 06:04:02,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:02,492 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 141 transitions. [2022-07-14 06:04:02,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-14 06:04:02,494 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:04:02,494 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:04:02,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-14 06:04:02,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:04:02,703 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:04:02,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:04:02,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1581646975, now seen corresponding path program 2 times [2022-07-14 06:04:02,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:04:02,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625057219] [2022-07-14 06:04:02,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 06:04:02,704 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:04:02,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:04:02,705 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:04:02,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-14 06:04:02,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 06:04:02,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:04:02,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 06:04:02,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:04:02,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:04:02,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2022-07-14 06:04:02,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-14 06:04:02,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-14 06:04:02,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:04:03,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:04:03,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-14 06:04:03,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:04:03,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625057219] [2022-07-14 06:04:03,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625057219] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:04:03,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:04:03,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-07-14 06:04:03,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525370221] [2022-07-14 06:04:03,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:04:03,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 06:04:03,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:04:03,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 06:04:03,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-14 06:04:03,363 INFO L87 Difference]: Start difference. First operand 117 states and 141 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:04,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:04:04,272 INFO L93 Difference]: Finished difference Result 161 states and 195 transitions. [2022-07-14 06:04:04,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 06:04:04,273 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 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 [2022-07-14 06:04:04,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:04:04,274 INFO L225 Difference]: With dead ends: 161 [2022-07-14 06:04:04,274 INFO L226 Difference]: Without dead ends: 161 [2022-07-14 06:04:04,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-14 06:04:04,275 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 114 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-14 06:04:04,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 247 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 226 Invalid, 0 Unknown, 69 Unchecked, 0.7s Time] [2022-07-14 06:04:04,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-07-14 06:04:04,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 133. [2022-07-14 06:04:04,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 119 states have (on average 1.3697478991596639) internal successors, (163), 132 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:04,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 163 transitions. [2022-07-14 06:04:04,279 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 163 transitions. Word has length 20 [2022-07-14 06:04:04,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:04:04,280 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 163 transitions. [2022-07-14 06:04:04,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:04,280 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 163 transitions. [2022-07-14 06:04:04,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-14 06:04:04,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:04:04,281 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:04:04,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-07-14 06:04:04,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:04:04,490 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:04:04,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:04:04,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1786415948, now seen corresponding path program 1 times [2022-07-14 06:04:04,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:04:04,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365005073] [2022-07-14 06:04:04,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:04:04,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:04:04,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:04:04,493 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:04:04,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-14 06:04:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:04:04,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 06:04:04,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:04:04,651 INFO L356 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-07-14 06:04:04,652 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2022-07-14 06:04:04,814 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-14 06:04:04,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:04:05,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-14 06:04:05,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:04:05,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365005073] [2022-07-14 06:04:05,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365005073] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:04:05,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:04:05,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-07-14 06:04:05,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623322863] [2022-07-14 06:04:05,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:04:05,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 06:04:05,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:04:05,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 06:04:05,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-07-14 06:04:05,373 INFO L87 Difference]: Start difference. First operand 133 states and 163 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:06,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:04:06,453 INFO L93 Difference]: Finished difference Result 153 states and 186 transitions. [2022-07-14 06:04:06,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-14 06:04:06,454 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 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 21 [2022-07-14 06:04:06,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:04:06,454 INFO L225 Difference]: With dead ends: 153 [2022-07-14 06:04:06,455 INFO L226 Difference]: Without dead ends: 153 [2022-07-14 06:04:06,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2022-07-14 06:04:06,455 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 123 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-14 06:04:06,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 255 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 226 Invalid, 0 Unknown, 29 Unchecked, 0.8s Time] [2022-07-14 06:04:06,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-07-14 06:04:06,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 134. [2022-07-14 06:04:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 120 states have (on average 1.35) internal successors, (162), 133 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:06,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 162 transitions. [2022-07-14 06:04:06,459 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 162 transitions. Word has length 21 [2022-07-14 06:04:06,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:04:06,459 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 162 transitions. [2022-07-14 06:04:06,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:06,460 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 162 transitions. [2022-07-14 06:04:06,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-14 06:04:06,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:04:06,460 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:04:06,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-14 06:04:06,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:04:06,663 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:04:06,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:04:06,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1242696241, now seen corresponding path program 1 times [2022-07-14 06:04:06,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:04:06,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178573534] [2022-07-14 06:04:06,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:04:06,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:04:06,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:04:06,666 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:04:06,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-14 06:04:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:04:06,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-14 06:04:06,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:04:06,774 INFO L390 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 8 treesize of output 7 [2022-07-14 06:04:06,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-07-14 06:04:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:04:07,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:04:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:04:07,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:04:07,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178573534] [2022-07-14 06:04:07,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178573534] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:04:07,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:04:07,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-07-14 06:04:07,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987768537] [2022-07-14 06:04:07,359 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:04:07,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-14 06:04:07,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:04:07,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-14 06:04:07,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-07-14 06:04:07,360 INFO L87 Difference]: Start difference. First operand 134 states and 162 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:08,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:04:08,371 INFO L93 Difference]: Finished difference Result 197 states and 237 transitions. [2022-07-14 06:04:08,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-14 06:04:08,372 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-07-14 06:04:08,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:04:08,373 INFO L225 Difference]: With dead ends: 197 [2022-07-14 06:04:08,373 INFO L226 Difference]: Without dead ends: 197 [2022-07-14 06:04:08,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2022-07-14 06:04:08,374 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 681 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-14 06:04:08,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 386 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-14 06:04:08,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-14 06:04:08,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 125. [2022-07-14 06:04:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 111 states have (on average 1.3513513513513513) internal successors, (150), 124 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 150 transitions. [2022-07-14 06:04:08,378 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 150 transitions. Word has length 23 [2022-07-14 06:04:08,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:04:08,378 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 150 transitions. [2022-07-14 06:04:08,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:08,379 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 150 transitions. [2022-07-14 06:04:08,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-14 06:04:08,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:04:08,380 INFO L195 NwaCegarLoop]: 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] [2022-07-14 06:04:08,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-14 06:04:08,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:04:08,589 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:04:08,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:04:08,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1547664583, now seen corresponding path program 1 times [2022-07-14 06:04:08,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:04:08,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790372748] [2022-07-14 06:04:08,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:04:08,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:04:08,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:04:08,591 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:04:08,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-14 06:04:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:04:08,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-14 06:04:08,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:04:08,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-14 06:04:08,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:04:08,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:04:08,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:04:08,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:04:08,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:04:08,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:04:08,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:04:08,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:04:08,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:04:08,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:04:08,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:04:08,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2022-07-14 06:04:08,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2022-07-14 06:04:08,942 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:04:08,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 26 [2022-07-14 06:04:08,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 06:04:08,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:04:09,103 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_365 (Array (_ BitVec 32) (_ BitVec 8)))) (bvslt |c_ULTIMATE.start_lis_~max~0#1| (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_365) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|))))) is different from false [2022-07-14 06:04:09,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:04:09,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:04:09,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:04:09,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:04:09,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:04:09,284 INFO L356 Elim1Store]: treesize reduction 303, result has 14.6 percent of original size [2022-07-14 06:04:09,284 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 203 treesize of output 95 [2022-07-14 06:04:09,472 INFO L356 Elim1Store]: treesize reduction 359, result has 10.3 percent of original size [2022-07-14 06:04:09,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 115 treesize of output 98 [2022-07-14 06:04:09,487 INFO L356 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-07-14 06:04:09,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 13 [2022-07-14 06:04:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 06:04:09,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:04:09,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790372748] [2022-07-14 06:04:09,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790372748] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:04:09,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:04:09,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-14 06:04:09,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548226180] [2022-07-14 06:04:09,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:04:09,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 06:04:09,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:04:09,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 06:04:09,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2022-07-14 06:04:09,999 INFO L87 Difference]: Start difference. First operand 125 states and 150 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:11,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 06:04:11,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:04:11,917 INFO L93 Difference]: Finished difference Result 167 states and 203 transitions. [2022-07-14 06:04:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:04:11,918 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-07-14 06:04:11,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:04:11,919 INFO L225 Difference]: With dead ends: 167 [2022-07-14 06:04:11,919 INFO L226 Difference]: Without dead ends: 167 [2022-07-14 06:04:11,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=127, Unknown=1, NotChecked=24, Total=210 [2022-07-14 06:04:11,920 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 61 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-14 06:04:11,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 225 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 156 Invalid, 0 Unknown, 93 Unchecked, 1.8s Time] [2022-07-14 06:04:11,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-07-14 06:04:11,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 149. [2022-07-14 06:04:11,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 135 states have (on average 1.4148148148148147) internal successors, (191), 148 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:11,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 191 transitions. [2022-07-14 06:04:11,924 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 191 transitions. Word has length 26 [2022-07-14 06:04:11,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:04:11,924 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 191 transitions. [2022-07-14 06:04:11,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:11,924 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 191 transitions. [2022-07-14 06:04:11,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-14 06:04:11,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:04:11,925 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:04:11,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-07-14 06:04:12,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:04:12,135 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:04:12,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:04:12,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1090844182, now seen corresponding path program 2 times [2022-07-14 06:04:12,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:04:12,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365204150] [2022-07-14 06:04:12,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 06:04:12,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:04:12,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:04:12,137 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:04:12,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-14 06:04:12,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 06:04:12,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:04:12,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-14 06:04:12,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:04:12,208 INFO L390 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 [2022-07-14 06:04:12,259 INFO L356 Elim1Store]: treesize reduction 43, result has 31.7 percent of original size [2022-07-14 06:04:12,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 31 [2022-07-14 06:04:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 06:04:12,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:04:12,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:04:12,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365204150] [2022-07-14 06:04:12,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365204150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:04:12,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:04:12,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 06:04:12,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110857776] [2022-07-14 06:04:12,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:04:12,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:04:12,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:04:12,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:04:12,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:04:12,378 INFO L87 Difference]: Start difference. First operand 149 states and 191 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:12,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:04:12,475 INFO L93 Difference]: Finished difference Result 157 states and 203 transitions. [2022-07-14 06:04:12,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 06:04:12,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 [2022-07-14 06:04:12,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:04:12,477 INFO L225 Difference]: With dead ends: 157 [2022-07-14 06:04:12,477 INFO L226 Difference]: Without dead ends: 157 [2022-07-14 06:04:12,478 INFO L412 NwaCegarLoop]: 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 [2022-07-14 06:04:12,478 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 10 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:04:12,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 123 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2022-07-14 06:04:12,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-14 06:04:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2022-07-14 06:04:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 139 states have (on average 1.4244604316546763) internal successors, (198), 152 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:12,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 198 transitions. [2022-07-14 06:04:12,481 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 198 transitions. Word has length 27 [2022-07-14 06:04:12,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:04:12,482 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 198 transitions. [2022-07-14 06:04:12,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:12,482 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 198 transitions. [2022-07-14 06:04:12,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-14 06:04:12,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:04:12,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:04:12,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-14 06:04:12,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:04:12,683 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:04:12,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:04:12,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1090844181, now seen corresponding path program 1 times [2022-07-14 06:04:12,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:04:12,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834952783] [2022-07-14 06:04:12,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:04:12,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:04:12,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:04:12,685 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:04:12,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-14 06:04:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:04:12,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-14 06:04:12,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:04:12,853 INFO L390 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 8 treesize of output 7 [2022-07-14 06:04:13,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:04:13,018 INFO L356 Elim1Store]: treesize reduction 35, result has 12.5 percent of original size [2022-07-14 06:04:13,019 INFO L390 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 1 case distinctions, treesize of input 28 treesize of output 30 [2022-07-14 06:04:13,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-14 06:04:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-14 06:04:13,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:04:13,659 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-14 06:04:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-14 06:04:14,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:04:14,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834952783] [2022-07-14 06:04:14,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834952783] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:04:14,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:04:14,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2022-07-14 06:04:14,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976301015] [2022-07-14 06:04:14,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:04:14,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 06:04:14,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:04:14,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 06:04:14,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-14 06:04:14,439 INFO L87 Difference]: Start difference. First operand 153 states and 198 transitions. Second operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:15,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:04:15,002 INFO L93 Difference]: Finished difference Result 160 states and 206 transitions. [2022-07-14 06:04:15,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 06:04:15,003 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 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 [2022-07-14 06:04:15,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:04:15,004 INFO L225 Difference]: With dead ends: 160 [2022-07-14 06:04:15,004 INFO L226 Difference]: Without dead ends: 160 [2022-07-14 06:04:15,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-07-14 06:04:15,005 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 104 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 06:04:15,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 268 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 128 Invalid, 0 Unknown, 99 Unchecked, 0.5s Time] [2022-07-14 06:04:15,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-14 06:04:15,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2022-07-14 06:04:15,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 142 states have (on average 1.4295774647887325) internal successors, (203), 155 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:15,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 203 transitions. [2022-07-14 06:04:15,009 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 203 transitions. Word has length 27 [2022-07-14 06:04:15,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:04:15,009 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 203 transitions. [2022-07-14 06:04:15,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:15,010 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 203 transitions. [2022-07-14 06:04:15,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-14 06:04:15,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:04:15,010 INFO L195 NwaCegarLoop]: 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] [2022-07-14 06:04:15,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-07-14 06:04:15,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:04:15,221 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:04:15,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:04:15,221 INFO L85 PathProgramCache]: Analyzing trace with hash -397297604, now seen corresponding path program 1 times [2022-07-14 06:04:15,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:04:15,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54362729] [2022-07-14 06:04:15,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:04:15,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:04:15,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:04:15,223 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:04:15,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-14 06:04:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:04:15,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 06:04:15,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:04:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-14 06:04:21,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:04:21,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:04:21,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54362729] [2022-07-14 06:04:21,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54362729] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:04:21,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:04:21,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 06:04:21,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898229277] [2022-07-14 06:04:21,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:04:21,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 06:04:21,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:04:21,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 06:04:21,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2022-07-14 06:04:21,653 INFO L87 Difference]: Start difference. First operand 156 states and 203 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:21,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:04:21,713 INFO L93 Difference]: Finished difference Result 171 states and 219 transitions. [2022-07-14 06:04:21,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:04:21,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-07-14 06:04:21,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:04:21,714 INFO L225 Difference]: With dead ends: 171 [2022-07-14 06:04:21,714 INFO L226 Difference]: Without dead ends: 146 [2022-07-14 06:04:21,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2022-07-14 06:04:21,715 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:04:21,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 201 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 52 Unchecked, 0.1s Time] [2022-07-14 06:04:21,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-07-14 06:04:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2022-07-14 06:04:21,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 130 states have (on average 1.4692307692307693) internal successors, (191), 143 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:21,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 191 transitions. [2022-07-14 06:04:21,718 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 191 transitions. Word has length 28 [2022-07-14 06:04:21,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:04:21,718 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 191 transitions. [2022-07-14 06:04:21,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:21,718 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 191 transitions. [2022-07-14 06:04:21,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-14 06:04:21,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:04:21,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:04:21,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-14 06:04:21,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:04:21,928 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:04:21,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:04:21,928 INFO L85 PathProgramCache]: Analyzing trace with hash 543568763, now seen corresponding path program 1 times [2022-07-14 06:04:21,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:04:21,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070979271] [2022-07-14 06:04:21,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:04:21,929 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:04:21,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:04:21,930 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:04:21,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-14 06:04:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:04:22,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 06:04:22,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:04:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 06:04:22,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:04:22,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:04:22,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070979271] [2022-07-14 06:04:22,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070979271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:04:22,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:04:22,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 06:04:22,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093489110] [2022-07-14 06:04:22,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:04:22,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 06:04:22,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:04:22,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 06:04:22,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:04:22,034 INFO L87 Difference]: Start difference. First operand 144 states and 191 transitions. Second operand has 3 states, 2 states have (on average 10.0) 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) [2022-07-14 06:04:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:04:22,141 INFO L93 Difference]: Finished difference Result 144 states and 183 transitions. [2022-07-14 06:04:22,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 06:04:22,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) 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 28 [2022-07-14 06:04:22,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:04:22,142 INFO L225 Difference]: With dead ends: 144 [2022-07-14 06:04:22,142 INFO L226 Difference]: Without dead ends: 144 [2022-07-14 06:04:22,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:04:22,143 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 36 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:04:22,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 87 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 06:04:22,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-07-14 06:04:22,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2022-07-14 06:04:22,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 129 states have (on average 1.4031007751937985) internal successors, (181), 140 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 181 transitions. [2022-07-14 06:04:22,147 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 181 transitions. Word has length 28 [2022-07-14 06:04:22,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:04:22,147 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 181 transitions. [2022-07-14 06:04:22,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) 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) [2022-07-14 06:04:22,148 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 181 transitions. [2022-07-14 06:04:22,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-14 06:04:22,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:04:22,148 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:04:22,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-07-14 06:04:22,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:04:22,351 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:04:22,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:04:22,352 INFO L85 PathProgramCache]: Analyzing trace with hash 543568764, now seen corresponding path program 1 times [2022-07-14 06:04:22,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:04:22,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811479071] [2022-07-14 06:04:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:04:22,352 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:04:22,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:04:22,353 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:04:22,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-14 06:04:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:04:22,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 06:04:22,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:04:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 06:04:22,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:04:22,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:04:22,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811479071] [2022-07-14 06:04:22,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811479071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:04:22,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:04:22,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 06:04:22,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131127075] [2022-07-14 06:04:22,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:04:22,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 06:04:22,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:04:22,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 06:04:22,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-14 06:04:22,524 INFO L87 Difference]: Start difference. First operand 141 states and 181 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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) [2022-07-14 06:04:22,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:04:22,806 INFO L93 Difference]: Finished difference Result 203 states and 259 transitions. [2022-07-14 06:04:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:04:22,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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 28 [2022-07-14 06:04:22,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:04:22,809 INFO L225 Difference]: With dead ends: 203 [2022-07-14 06:04:22,809 INFO L226 Difference]: Without dead ends: 203 [2022-07-14 06:04:22,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-07-14 06:04:22,809 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 251 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:04:22,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 98 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 06:04:22,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-14 06:04:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 139. [2022-07-14 06:04:22,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 127 states have (on average 1.3858267716535433) internal successors, (176), 138 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:22,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 176 transitions. [2022-07-14 06:04:22,813 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 176 transitions. Word has length 28 [2022-07-14 06:04:22,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:04:22,813 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 176 transitions. [2022-07-14 06:04:22,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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) [2022-07-14 06:04:22,814 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 176 transitions. [2022-07-14 06:04:22,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-14 06:04:22,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:04:22,814 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:04:22,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-07-14 06:04:23,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:04:23,025 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:04:23,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:04:23,025 INFO L85 PathProgramCache]: Analyzing trace with hash 590171529, now seen corresponding path program 3 times [2022-07-14 06:04:23,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:04:23,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921223422] [2022-07-14 06:04:23,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 06:04:23,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:04:23,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:04:23,027 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:04:23,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-14 06:04:23,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-14 06:04:23,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:04:23,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-14 06:04:23,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:04:23,193 INFO L390 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 8 treesize of output 7 [2022-07-14 06:04:23,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:04:23,396 INFO L356 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2022-07-14 06:04:23,397 INFO L390 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 1 case distinctions, treesize of input 24 treesize of output 30 [2022-07-14 06:04:23,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-14 06:04:23,685 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:04:23,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:04:24,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-14 06:04:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:04:25,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:04:25,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921223422] [2022-07-14 06:04:25,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921223422] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:04:25,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:04:25,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2022-07-14 06:04:25,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532417197] [2022-07-14 06:04:25,359 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:04:25,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-14 06:04:25,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:04:25,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-14 06:04:25,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-07-14 06:04:25,360 INFO L87 Difference]: Start difference. First operand 139 states and 176 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:27,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:04:27,888 INFO L93 Difference]: Finished difference Result 240 states and 292 transitions. [2022-07-14 06:04:27,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-14 06:04:27,888 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-07-14 06:04:27,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:04:27,889 INFO L225 Difference]: With dead ends: 240 [2022-07-14 06:04:27,889 INFO L226 Difference]: Without dead ends: 240 [2022-07-14 06:04:27,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2022-07-14 06:04:27,890 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 275 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:04:27,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 335 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 361 Invalid, 0 Unknown, 146 Unchecked, 1.3s Time] [2022-07-14 06:04:27,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-07-14 06:04:27,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 215. [2022-07-14 06:04:27,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 203 states have (on average 1.3300492610837438) internal successors, (270), 214 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:27,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 270 transitions. [2022-07-14 06:04:27,894 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 270 transitions. Word has length 28 [2022-07-14 06:04:27,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:04:27,894 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 270 transitions. [2022-07-14 06:04:27,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:27,894 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 270 transitions. [2022-07-14 06:04:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-14 06:04:27,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:04:27,895 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:04:27,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-07-14 06:04:28,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:04:28,107 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:04:28,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:04:28,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1391261449, now seen corresponding path program 1 times [2022-07-14 06:04:28,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:04:28,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12054607] [2022-07-14 06:04:28,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:04:28,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:04:28,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:04:28,110 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:04:28,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-07-14 06:04:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:04:28,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 06:04:28,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:04:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 06:04:28,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:04:28,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:04:28,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12054607] [2022-07-14 06:04:28,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12054607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:04:28,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:04:28,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 06:04:28,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342485867] [2022-07-14 06:04:28,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:04:28,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 06:04:28,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:04:28,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 06:04:28,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:04:28,224 INFO L87 Difference]: Start difference. First operand 215 states and 270 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:28,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:04:28,241 INFO L93 Difference]: Finished difference Result 216 states and 268 transitions. [2022-07-14 06:04:28,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 06:04:28,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 32 [2022-07-14 06:04:28,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:04:28,242 INFO L225 Difference]: With dead ends: 216 [2022-07-14 06:04:28,242 INFO L226 Difference]: Without dead ends: 216 [2022-07-14 06:04:28,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:04:28,243 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:04:28,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:04:28,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-14 06:04:28,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-07-14 06:04:28,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 205 states have (on average 1.3073170731707318) internal successors, (268), 215 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:28,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 268 transitions. [2022-07-14 06:04:28,252 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 268 transitions. Word has length 32 [2022-07-14 06:04:28,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:04:28,252 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 268 transitions. [2022-07-14 06:04:28,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 268 transitions. [2022-07-14 06:04:28,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-14 06:04:28,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:04:28,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:04:28,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-07-14 06:04:28,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:04:28,459 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:04:28,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:04:28,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1391252418, now seen corresponding path program 1 times [2022-07-14 06:04:28,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:04:28,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947023940] [2022-07-14 06:04:28,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:04:28,460 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:04:28,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:04:28,461 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:04:28,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-07-14 06:04:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:04:28,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 06:04:28,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:04:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-14 06:04:28,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:04:28,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-07-14 06:04:29,051 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-14 06:04:29,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:04:29,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947023940] [2022-07-14 06:04:29,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947023940] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:04:29,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:04:29,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-07-14 06:04:29,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762528265] [2022-07-14 06:04:29,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:04:29,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 06:04:29,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:04:29,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 06:04:29,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-14 06:04:29,054 INFO L87 Difference]: Start difference. First operand 216 states and 268 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:30,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:04:30,563 INFO L93 Difference]: Finished difference Result 802 states and 1009 transitions. [2022-07-14 06:04:30,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-14 06:04:30,564 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 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 32 [2022-07-14 06:04:30,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:04:30,569 INFO L225 Difference]: With dead ends: 802 [2022-07-14 06:04:30,570 INFO L226 Difference]: Without dead ends: 802 [2022-07-14 06:04:30,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2022-07-14 06:04:30,571 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 1220 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-14 06:04:30,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 199 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-14 06:04:30,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-07-14 06:04:30,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 311. [2022-07-14 06:04:30,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 301 states have (on average 1.3521594684385383) internal successors, (407), 310 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:30,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 407 transitions. [2022-07-14 06:04:30,580 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 407 transitions. Word has length 32 [2022-07-14 06:04:30,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:04:30,581 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 407 transitions. [2022-07-14 06:04:30,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:30,581 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 407 transitions. [2022-07-14 06:04:30,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-14 06:04:30,581 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:04:30,582 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:04:30,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-07-14 06:04:30,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:04:30,792 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:04:30,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:04:30,793 INFO L85 PathProgramCache]: Analyzing trace with hash 795842271, now seen corresponding path program 2 times [2022-07-14 06:04:30,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:04:30,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798186243] [2022-07-14 06:04:30,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 06:04:30,793 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:04:30,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:04:30,794 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:04:30,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-07-14 06:04:30,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 06:04:30,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:04:30,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-14 06:04:30,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:04:30,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-14 06:04:30,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-07-14 06:04:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-14 06:04:31,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:04:33,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:04:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-14 06:04:33,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:04:33,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798186243] [2022-07-14 06:04:33,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798186243] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:04:33,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:04:33,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2022-07-14 06:04:33,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179222718] [2022-07-14 06:04:33,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:04:33,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 06:04:33,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:04:33,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 06:04:33,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 06:04:33,351 INFO L87 Difference]: Start difference. First operand 311 states and 407 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:33,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:04:33,706 INFO L93 Difference]: Finished difference Result 322 states and 423 transitions. [2022-07-14 06:04:33,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:04:33,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 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 33 [2022-07-14 06:04:33,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:04:33,708 INFO L225 Difference]: With dead ends: 322 [2022-07-14 06:04:33,708 INFO L226 Difference]: Without dead ends: 322 [2022-07-14 06:04:33,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-14 06:04:33,709 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 21 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:04:33,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 139 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 40 Unchecked, 0.3s Time] [2022-07-14 06:04:33,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-07-14 06:04:33,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 304. [2022-07-14 06:04:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 295 states have (on average 1.352542372881356) internal successors, (399), 303 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:33,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 399 transitions. [2022-07-14 06:04:33,714 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 399 transitions. Word has length 33 [2022-07-14 06:04:33,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:04:33,714 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 399 transitions. [2022-07-14 06:04:33,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:33,714 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 399 transitions. [2022-07-14 06:04:33,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-14 06:04:33,714 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:04:33,715 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2022-07-14 06:04:33,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-07-14 06:04:33,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:04:33,915 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:04:33,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:04:33,916 INFO L85 PathProgramCache]: Analyzing trace with hash -563143139, now seen corresponding path program 3 times [2022-07-14 06:04:33,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:04:33,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915439509] [2022-07-14 06:04:33,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 06:04:33,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:04:33,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:04:33,918 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:04:33,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-07-14 06:04:34,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-07-14 06:04:34,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:04:34,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-14 06:04:34,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:04:34,115 INFO L390 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 8 treesize of output 7 [2022-07-14 06:04:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:04:34,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:04:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:04:37,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:04:37,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915439509] [2022-07-14 06:04:37,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915439509] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:04:37,494 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:04:37,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-07-14 06:04:37,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180057956] [2022-07-14 06:04:37,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:04:37,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-14 06:04:37,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:04:37,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-14 06:04:37,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2022-07-14 06:04:37,496 INFO L87 Difference]: Start difference. First operand 304 states and 399 transitions. Second operand has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:55,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:04:55,159 INFO L93 Difference]: Finished difference Result 1193 states and 1602 transitions. [2022-07-14 06:04:55,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-14 06:04:55,160 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-07-14 06:04:55,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:04:55,163 INFO L225 Difference]: With dead ends: 1193 [2022-07-14 06:04:55,163 INFO L226 Difference]: Without dead ends: 1193 [2022-07-14 06:04:55,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=547, Invalid=1259, Unknown=0, NotChecked=0, Total=1806 [2022-07-14 06:04:55,164 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 2274 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:04:55,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2274 Valid, 1653 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1354 Invalid, 0 Unknown, 31 Unchecked, 5.0s Time] [2022-07-14 06:04:55,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2022-07-14 06:04:55,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 336. [2022-07-14 06:04:55,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 327 states have (on average 1.342507645259939) internal successors, (439), 335 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:55,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 439 transitions. [2022-07-14 06:04:55,173 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 439 transitions. Word has length 34 [2022-07-14 06:04:55,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:04:55,173 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 439 transitions. [2022-07-14 06:04:55,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:55,174 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 439 transitions. [2022-07-14 06:04:55,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-14 06:04:55,174 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:04:55,174 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:04:55,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-07-14 06:04:55,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:04:55,375 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:04:55,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:04:55,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1267793515, now seen corresponding path program 1 times [2022-07-14 06:04:55,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:04:55,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139066974] [2022-07-14 06:04:55,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:04:55,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:04:55,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:04:55,377 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:04:55,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-07-14 06:04:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:04:55,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 06:04:55,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:04:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 06:04:55,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:04:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 06:04:55,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:04:55,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139066974] [2022-07-14 06:04:55,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139066974] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:04:55,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:04:55,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-14 06:04:55,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046116968] [2022-07-14 06:04:55,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:04:55,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 06:04:55,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:04:55,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 06:04:55,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:04:55,561 INFO L87 Difference]: Start difference. First operand 336 states and 439 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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) [2022-07-14 06:04:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:04:55,778 INFO L93 Difference]: Finished difference Result 320 states and 404 transitions. [2022-07-14 06:04:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 06:04:55,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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 34 [2022-07-14 06:04:55,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:04:55,780 INFO L225 Difference]: With dead ends: 320 [2022-07-14 06:04:55,780 INFO L226 Difference]: Without dead ends: 320 [2022-07-14 06:04:55,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:04:55,781 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 64 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:04:55,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 125 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 06:04:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-07-14 06:04:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 309. [2022-07-14 06:04:55,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 300 states have (on average 1.31) internal successors, (393), 308 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:04:55,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 393 transitions. [2022-07-14 06:04:55,786 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 393 transitions. Word has length 34 [2022-07-14 06:04:55,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:04:55,786 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 393 transitions. [2022-07-14 06:04:55,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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) [2022-07-14 06:04:55,786 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 393 transitions. [2022-07-14 06:04:55,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-14 06:04:55,787 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:04:55,787 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:04:55,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-07-14 06:04:55,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:04:55,995 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:04:55,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:04:55,996 INFO L85 PathProgramCache]: Analyzing trace with hash 717604305, now seen corresponding path program 4 times [2022-07-14 06:04:55,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:04:55,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64049587] [2022-07-14 06:04:55,996 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 06:04:55,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:04:55,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:04:55,999 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:04:55,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-07-14 06:04:56,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 06:04:56,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:04:56,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-14 06:04:56,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:04:56,231 INFO L356 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-07-14 06:04:56,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2022-07-14 06:04:56,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-07-14 06:04:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 06:04:56,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:04:57,356 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 06:04:57,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:04:57,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64049587] [2022-07-14 06:04:57,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64049587] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:04:57,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:04:57,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2022-07-14 06:04:57,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562601564] [2022-07-14 06:04:57,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:04:57,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-14 06:04:57,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:04:57,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-14 06:04:57,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-07-14 06:04:57,357 INFO L87 Difference]: Start difference. First operand 309 states and 393 transitions. Second operand has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:03,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:05:03,669 INFO L93 Difference]: Finished difference Result 685 states and 891 transitions. [2022-07-14 06:05:03,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-14 06:05:03,671 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-07-14 06:05:03,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:05:03,672 INFO L225 Difference]: With dead ends: 685 [2022-07-14 06:05:03,672 INFO L226 Difference]: Without dead ends: 685 [2022-07-14 06:05:03,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=663, Invalid=2417, Unknown=0, NotChecked=0, Total=3080 [2022-07-14 06:05:03,674 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 1113 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-14 06:05:03,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 930 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-14 06:05:03,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-07-14 06:05:03,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 500. [2022-07-14 06:05:03,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 491 states have (on average 1.3441955193482689) internal successors, (660), 499 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:03,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 660 transitions. [2022-07-14 06:05:03,689 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 660 transitions. Word has length 36 [2022-07-14 06:05:03,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:05:03,689 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 660 transitions. [2022-07-14 06:05:03,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:03,689 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 660 transitions. [2022-07-14 06:05:03,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-14 06:05:03,690 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:05:03,690 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:05:03,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-07-14 06:05:03,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:05:03,901 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:05:03,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:05:03,902 INFO L85 PathProgramCache]: Analyzing trace with hash -411523054, now seen corresponding path program 5 times [2022-07-14 06:05:03,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:05:03,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173357450] [2022-07-14 06:05:03,902 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 06:05:03,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:05:03,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:05:03,904 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:05:03,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-07-14 06:05:04,141 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-07-14 06:05:04,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:05:04,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-14 06:05:04,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:05:04,160 INFO L390 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 8 treesize of output 7 [2022-07-14 06:05:04,492 INFO L356 Elim1Store]: treesize reduction 50, result has 20.6 percent of original size [2022-07-14 06:05:04,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2022-07-14 06:05:04,895 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:05:04,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:05:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:05:07,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:05:07,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173357450] [2022-07-14 06:05:07,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173357450] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:05:07,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:05:07,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2022-07-14 06:05:07,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105365656] [2022-07-14 06:05:07,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:05:07,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-14 06:05:07,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:05:07,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-14 06:05:07,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2022-07-14 06:05:07,017 INFO L87 Difference]: Start difference. First operand 500 states and 660 transitions. Second operand has 30 states, 29 states have (on average 2.689655172413793) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:13,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:05:13,590 INFO L93 Difference]: Finished difference Result 565 states and 730 transitions. [2022-07-14 06:05:13,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-14 06:05:13,591 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.689655172413793) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 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 40 [2022-07-14 06:05:13,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:05:13,593 INFO L225 Difference]: With dead ends: 565 [2022-07-14 06:05:13,593 INFO L226 Difference]: Without dead ends: 565 [2022-07-14 06:05:13,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=479, Invalid=2071, Unknown=0, NotChecked=0, Total=2550 [2022-07-14 06:05:13,594 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 118 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 299 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-14 06:05:13,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 462 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 384 Invalid, 0 Unknown, 299 Unchecked, 1.6s Time] [2022-07-14 06:05:13,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-07-14 06:05:13,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 518. [2022-07-14 06:05:13,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 509 states have (on average 1.337917485265226) internal successors, (681), 517 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:13,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 681 transitions. [2022-07-14 06:05:13,602 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 681 transitions. Word has length 40 [2022-07-14 06:05:13,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:05:13,602 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 681 transitions. [2022-07-14 06:05:13,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.689655172413793) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:13,602 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 681 transitions. [2022-07-14 06:05:13,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-14 06:05:13,603 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:05:13,603 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:05:13,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-07-14 06:05:13,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:05:13,814 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:05:13,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:05:13,815 INFO L85 PathProgramCache]: Analyzing trace with hash -282034220, now seen corresponding path program 6 times [2022-07-14 06:05:13,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:05:13,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483987638] [2022-07-14 06:05:13,815 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-14 06:05:13,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:05:13,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:05:13,816 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:05:13,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-07-14 06:05:13,993 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-07-14 06:05:13,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:05:14,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-14 06:05:14,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:05:14,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:14,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2022-07-14 06:05:14,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-14 06:05:14,345 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-14 06:05:14,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:05:15,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-14 06:05:15,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:05:15,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483987638] [2022-07-14 06:05:15,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483987638] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:05:15,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:05:15,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-07-14 06:05:15,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552724757] [2022-07-14 06:05:15,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:05:15,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-14 06:05:15,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:05:15,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-14 06:05:15,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-07-14 06:05:15,666 INFO L87 Difference]: Start difference. First operand 518 states and 681 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:20,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:05:20,398 INFO L93 Difference]: Finished difference Result 903 states and 1184 transitions. [2022-07-14 06:05:20,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-14 06:05:20,399 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 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 40 [2022-07-14 06:05:20,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:05:20,401 INFO L225 Difference]: With dead ends: 903 [2022-07-14 06:05:20,401 INFO L226 Difference]: Without dead ends: 903 [2022-07-14 06:05:20,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=409, Invalid=997, Unknown=0, NotChecked=0, Total=1406 [2022-07-14 06:05:20,402 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 904 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:05:20,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 505 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 817 Invalid, 0 Unknown, 74 Unchecked, 2.3s Time] [2022-07-14 06:05:20,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-07-14 06:05:20,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 699. [2022-07-14 06:05:20,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 690 states have (on average 1.3420289855072465) internal successors, (926), 698 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:20,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 926 transitions. [2022-07-14 06:05:20,413 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 926 transitions. Word has length 40 [2022-07-14 06:05:20,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:05:20,413 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 926 transitions. [2022-07-14 06:05:20,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:20,414 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 926 transitions. [2022-07-14 06:05:20,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-14 06:05:20,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:05:20,415 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:05:20,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-07-14 06:05:20,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:05:20,626 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:05:20,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:05:20,626 INFO L85 PathProgramCache]: Analyzing trace with hash 306205251, now seen corresponding path program 1 times [2022-07-14 06:05:20,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:05:20,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217146397] [2022-07-14 06:05:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:05:20,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:05:20,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:05:20,628 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:05:20,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-07-14 06:05:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:05:20,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-14 06:05:20,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:05:20,767 INFO L390 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 8 treesize of output 7 [2022-07-14 06:05:20,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-07-14 06:05:21,090 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-14 06:05:21,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:05:21,448 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-14 06:05:21,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:05:21,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217146397] [2022-07-14 06:05:21,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217146397] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:05:21,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:05:21,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-07-14 06:05:21,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728321061] [2022-07-14 06:05:21,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:05:21,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-14 06:05:21,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:05:21,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-14 06:05:21,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-07-14 06:05:21,451 INFO L87 Difference]: Start difference. First operand 699 states and 926 transitions. Second operand has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:22,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:05:22,463 INFO L93 Difference]: Finished difference Result 947 states and 1263 transitions. [2022-07-14 06:05:22,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-14 06:05:22,467 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 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 44 [2022-07-14 06:05:22,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:05:22,470 INFO L225 Difference]: With dead ends: 947 [2022-07-14 06:05:22,470 INFO L226 Difference]: Without dead ends: 947 [2022-07-14 06:05:22,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2022-07-14 06:05:22,471 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 764 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-14 06:05:22,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 357 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-14 06:05:22,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-07-14 06:05:22,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 858. [2022-07-14 06:05:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 849 states have (on average 1.3769140164899882) internal successors, (1169), 857 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:22,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1169 transitions. [2022-07-14 06:05:22,484 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1169 transitions. Word has length 44 [2022-07-14 06:05:22,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:05:22,484 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1169 transitions. [2022-07-14 06:05:22,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:22,484 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1169 transitions. [2022-07-14 06:05:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-14 06:05:22,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:05:22,486 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:05:22,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-07-14 06:05:22,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:05:22,697 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:05:22,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:05:22,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1599170913, now seen corresponding path program 1 times [2022-07-14 06:05:22,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:05:22,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343484036] [2022-07-14 06:05:22,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:05:22,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:05:22,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:05:22,699 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:05:22,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-07-14 06:05:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:05:22,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-14 06:05:22,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:05:22,841 INFO L390 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 8 treesize of output 7 [2022-07-14 06:05:22,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-07-14 06:05:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-14 06:05:23,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:05:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-14 06:05:23,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:05:23,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343484036] [2022-07-14 06:05:23,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343484036] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:05:23,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:05:23,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-07-14 06:05:23,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69295319] [2022-07-14 06:05:23,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:05:23,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-14 06:05:23,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:05:23,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-14 06:05:23,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-07-14 06:05:23,861 INFO L87 Difference]: Start difference. First operand 858 states and 1169 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:25,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:05:25,776 INFO L93 Difference]: Finished difference Result 1289 states and 1744 transitions. [2022-07-14 06:05:25,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-14 06:05:25,777 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 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 45 [2022-07-14 06:05:25,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:05:25,780 INFO L225 Difference]: With dead ends: 1289 [2022-07-14 06:05:25,780 INFO L226 Difference]: Without dead ends: 1289 [2022-07-14 06:05:25,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=392, Invalid=1330, Unknown=0, NotChecked=0, Total=1722 [2022-07-14 06:05:25,781 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 889 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:05:25,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 718 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-14 06:05:25,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2022-07-14 06:05:25,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 872. [2022-07-14 06:05:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 863 states have (on average 1.3684820393974508) internal successors, (1181), 871 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:25,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1181 transitions. [2022-07-14 06:05:25,794 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1181 transitions. Word has length 45 [2022-07-14 06:05:25,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:05:25,795 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1181 transitions. [2022-07-14 06:05:25,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1181 transitions. [2022-07-14 06:05:25,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-14 06:05:25,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:05:25,796 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:05:25,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-07-14 06:05:26,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:05:26,006 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:05:26,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:05:26,007 INFO L85 PathProgramCache]: Analyzing trace with hash -484234273, now seen corresponding path program 2 times [2022-07-14 06:05:26,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:05:26,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578571642] [2022-07-14 06:05:26,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 06:05:26,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:05:26,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:05:26,009 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:05:26,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-07-14 06:05:26,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 06:05:26,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:05:26,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-14 06:05:26,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:05:26,118 INFO L390 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 [2022-07-14 06:05:26,122 INFO L390 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 8 treesize of output 7 [2022-07-14 06:05:26,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:26,254 INFO L356 Elim1Store]: treesize reduction 28, result has 34.9 percent of original size [2022-07-14 06:05:26,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-07-14 06:05:26,267 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 06:05:26,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-14 06:05:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-14 06:05:26,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:05:33,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-14 06:05:36,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:05:36,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578571642] [2022-07-14 06:05:36,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578571642] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:05:36,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:05:36,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-07-14 06:05:36,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469064722] [2022-07-14 06:05:36,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:05:36,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 06:05:36,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:05:36,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 06:05:36,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=100, Unknown=2, NotChecked=0, Total=132 [2022-07-14 06:05:36,145 INFO L87 Difference]: Start difference. First operand 872 states and 1181 transitions. Second operand has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:36,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:05:36,655 INFO L93 Difference]: Finished difference Result 884 states and 1181 transitions. [2022-07-14 06:05:36,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 06:05:36,657 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 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 45 [2022-07-14 06:05:36,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:05:36,660 INFO L225 Difference]: With dead ends: 884 [2022-07-14 06:05:36,660 INFO L226 Difference]: Without dead ends: 884 [2022-07-14 06:05:36,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=50, Invalid=158, Unknown=2, NotChecked=0, Total=210 [2022-07-14 06:05:36,660 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 74 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:05:36,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 123 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 104 Unchecked, 0.3s Time] [2022-07-14 06:05:36,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-07-14 06:05:36,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 872. [2022-07-14 06:05:36,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 863 states have (on average 1.354577056778679) internal successors, (1169), 871 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:36,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1169 transitions. [2022-07-14 06:05:36,670 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1169 transitions. Word has length 45 [2022-07-14 06:05:36,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:05:36,671 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1169 transitions. [2022-07-14 06:05:36,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:36,671 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1169 transitions. [2022-07-14 06:05:36,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-14 06:05:36,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:05:36,672 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:05:36,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-07-14 06:05:36,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:05:36,881 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:05:36,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:05:36,882 INFO L85 PathProgramCache]: Analyzing trace with hash -2126360568, now seen corresponding path program 1 times [2022-07-14 06:05:36,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:05:36,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873990916] [2022-07-14 06:05:36,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:05:36,882 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:05:36,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:05:36,884 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:05:36,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-07-14 06:05:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:05:37,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 06:05:37,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:05:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-14 06:05:37,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:05:37,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-07-14 06:05:38,003 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-14 06:05:38,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:05:38,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873990916] [2022-07-14 06:05:38,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873990916] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:05:38,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:05:38,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-07-14 06:05:38,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627304091] [2022-07-14 06:05:38,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:05:38,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 06:05:38,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:05:38,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 06:05:38,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-14 06:05:38,004 INFO L87 Difference]: Start difference. First operand 872 states and 1169 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:39,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:05:39,147 INFO L93 Difference]: Finished difference Result 1105 states and 1421 transitions. [2022-07-14 06:05:39,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 06:05:39,149 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 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 46 [2022-07-14 06:05:39,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:05:39,151 INFO L225 Difference]: With dead ends: 1105 [2022-07-14 06:05:39,151 INFO L226 Difference]: Without dead ends: 1105 [2022-07-14 06:05:39,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2022-07-14 06:05:39,152 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 577 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-14 06:05:39,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 149 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-14 06:05:39,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-07-14 06:05:39,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 872. [2022-07-14 06:05:39,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 863 states have (on average 1.320973348783314) internal successors, (1140), 871 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:39,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1140 transitions. [2022-07-14 06:05:39,163 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1140 transitions. Word has length 46 [2022-07-14 06:05:39,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:05:39,163 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1140 transitions. [2022-07-14 06:05:39,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:39,164 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1140 transitions. [2022-07-14 06:05:39,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-14 06:05:39,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:05:39,165 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:05:39,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-07-14 06:05:39,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:05:39,377 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:05:39,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:05:39,377 INFO L85 PathProgramCache]: Analyzing trace with hash -326352172, now seen corresponding path program 1 times [2022-07-14 06:05:39,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:05:39,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003971296] [2022-07-14 06:05:39,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:05:39,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:05:39,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:05:39,379 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:05:39,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-07-14 06:05:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:05:39,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 06:05:39,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:05:39,631 INFO L356 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-07-14 06:05:39,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 17 [2022-07-14 06:05:40,305 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-14 06:05:40,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:05:41,177 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-14 06:05:41,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:05:41,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003971296] [2022-07-14 06:05:41,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003971296] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:05:41,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:05:41,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2022-07-14 06:05:41,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891352525] [2022-07-14 06:05:41,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:05:41,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 06:05:41,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:05:41,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 06:05:41,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-14 06:05:41,179 INFO L87 Difference]: Start difference. First operand 872 states and 1140 transitions. Second operand has 11 states, 10 states have (on average 7.2) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:41,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:05:41,634 INFO L93 Difference]: Finished difference Result 872 states and 1137 transitions. [2022-07-14 06:05:41,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 06:05:41,635 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.2) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 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 46 [2022-07-14 06:05:41,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:05:41,637 INFO L225 Difference]: With dead ends: 872 [2022-07-14 06:05:41,637 INFO L226 Difference]: Without dead ends: 872 [2022-07-14 06:05:41,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-07-14 06:05:41,638 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 39 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 06:05:41,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 139 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 34 Unchecked, 0.4s Time] [2022-07-14 06:05:41,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-07-14 06:05:41,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2022-07-14 06:05:41,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 863 states have (on average 1.3174971031286211) internal successors, (1137), 871 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:41,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1137 transitions. [2022-07-14 06:05:41,647 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1137 transitions. Word has length 46 [2022-07-14 06:05:41,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:05:41,647 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1137 transitions. [2022-07-14 06:05:41,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.2) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:41,653 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1137 transitions. [2022-07-14 06:05:41,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-14 06:05:41,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:05:41,654 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:05:41,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-07-14 06:05:41,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:05:41,859 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:05:41,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:05:41,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1349955383, now seen corresponding path program 1 times [2022-07-14 06:05:41,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:05:41,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050538362] [2022-07-14 06:05:41,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:05:41,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:05:41,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:05:41,861 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:05:41,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-07-14 06:05:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:05:42,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 06:05:42,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:05:49,009 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-14 06:05:49,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:05:49,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:05:49,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050538362] [2022-07-14 06:05:49,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050538362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:05:49,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:05:49,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 06:05:49,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053863098] [2022-07-14 06:05:49,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:05:49,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 06:05:49,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:05:49,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 06:05:49,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2022-07-14 06:05:49,011 INFO L87 Difference]: Start difference. First operand 872 states and 1137 transitions. Second operand has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:49,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:05:49,018 INFO L93 Difference]: Finished difference Result 1104 states and 1443 transitions. [2022-07-14 06:05:49,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:05:49,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-07-14 06:05:49,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:05:49,022 INFO L225 Difference]: With dead ends: 1104 [2022-07-14 06:05:49,022 INFO L226 Difference]: Without dead ends: 1082 [2022-07-14 06:05:49,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2022-07-14 06:05:49,023 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:05:49,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 212 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 41 Unchecked, 0.0s Time] [2022-07-14 06:05:49,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-07-14 06:05:49,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1007. [2022-07-14 06:05:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 998 states have (on average 1.3356713426853708) internal successors, (1333), 1006 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:49,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1333 transitions. [2022-07-14 06:05:49,036 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1333 transitions. Word has length 50 [2022-07-14 06:05:49,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:05:49,036 INFO L495 AbstractCegarLoop]: Abstraction has 1007 states and 1333 transitions. [2022-07-14 06:05:49,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:49,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1333 transitions. [2022-07-14 06:05:49,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-14 06:05:49,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:05:49,038 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:05:49,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-07-14 06:05:49,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:05:49,247 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:05:49,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:05:49,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1278180873, now seen corresponding path program 3 times [2022-07-14 06:05:49,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:05:49,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982811582] [2022-07-14 06:05:49,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 06:05:49,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:05:49,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:05:49,250 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:05:49,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-07-14 06:05:49,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-14 06:05:49,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:05:49,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 06:05:49,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:05:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-14 06:05:49,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:05:49,976 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-14 06:05:50,524 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-14 06:05:50,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:05:50,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982811582] [2022-07-14 06:05:50,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982811582] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:05:50,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:05:50,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-07-14 06:05:50,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465941971] [2022-07-14 06:05:50,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:05:50,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 06:05:50,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:05:50,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 06:05:50,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-07-14 06:05:50,527 INFO L87 Difference]: Start difference. First operand 1007 states and 1333 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:51,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:05:51,839 INFO L93 Difference]: Finished difference Result 1349 states and 1730 transitions. [2022-07-14 06:05:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 06:05:51,841 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-07-14 06:05:51,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:05:51,844 INFO L225 Difference]: With dead ends: 1349 [2022-07-14 06:05:51,844 INFO L226 Difference]: Without dead ends: 1349 [2022-07-14 06:05:51,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2022-07-14 06:05:51,845 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 541 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-14 06:05:51,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 158 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-14 06:05:51,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2022-07-14 06:05:51,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1006. [2022-07-14 06:05:51,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 998 states have (on average 1.2895791583166332) internal successors, (1287), 1005 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:51,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1287 transitions. [2022-07-14 06:05:51,856 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1287 transitions. Word has length 52 [2022-07-14 06:05:51,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:05:51,857 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1287 transitions. [2022-07-14 06:05:51,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:05:51,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1287 transitions. [2022-07-14 06:05:51,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-14 06:05:51,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:05:51,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:05:51,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-07-14 06:05:52,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:05:52,068 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:05:52,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:05:52,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1986422419, now seen corresponding path program 1 times [2022-07-14 06:05:52,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:05:52,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079447786] [2022-07-14 06:05:52,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:05:52,069 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:05:52,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:05:52,070 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:05:52,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-07-14 06:05:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:05:52,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-14 06:05:52,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:05:52,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-14 06:05:52,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:52,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:52,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 52 [2022-07-14 06:05:52,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2022-07-14 06:05:52,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:52,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:52,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:52,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 91 [2022-07-14 06:05:52,876 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 73 [2022-07-14 06:05:53,681 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:05:53,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 115 treesize of output 51 [2022-07-14 06:05:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 06:05:53,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:05:54,586 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1427 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1427) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (select .cse0 (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (bvadd (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (_ bv1 32))))) is different from false [2022-07-14 06:05:54,631 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1427 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse1 (bvmul (_ bv4 32) |c_ULTIMATE.start_lis_~i~0#1|))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1) ((_ extract 7 0) (_ bv1 32))) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1 (_ bv1 32)) ((_ extract 15 8) (_ bv1 32))) (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1) ((_ extract 23 16) (_ bv1 32))) (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1) ((_ extract 31 24) (_ bv1 32))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1427) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (select .cse0 (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (bvadd (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (_ bv1 32))))) is different from false [2022-07-14 06:05:54,690 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1427 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse1 (bvmul (_ bv4 32) |c_ULTIMATE.start_lis_~i~0#1|))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1) ((_ extract 7 0) (_ bv1 32))) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1 (_ bv5 32)) ((_ extract 15 8) (_ bv1 32))) (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1) ((_ extract 23 16) (_ bv1 32))) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32) .cse1) ((_ extract 31 24) (_ bv1 32))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1427) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (select .cse0 (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (bvadd (_ bv1 32) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)))))) is different from false [2022-07-14 06:05:54,775 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1421 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1427 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1421))) (store .cse1 |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse2 (bvmul (_ bv4 32) |c_ULTIMATE.start_lis_~i~0#1|))) (store (store (store (store (select .cse1 |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse2) ((_ extract 7 0) (_ bv1 32))) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| .cse2 (_ bv5 32)) ((_ extract 15 8) (_ bv1 32))) (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse2) ((_ extract 23 16) (_ bv1 32))) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32) .cse2) ((_ extract 31 24) (_ bv1 32)))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1427) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (select .cse0 (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (bvadd (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (_ bv1 32))))) is different from false [2022-07-14 06:05:54,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:54,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:54,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:54,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:54,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:05:55,004 INFO L356 Elim1Store]: treesize reduction 303, result has 14.6 percent of original size [2022-07-14 06:05:55,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 1103 treesize of output 515 [2022-07-14 06:05:55,011 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 861 treesize of output 837 [2022-07-14 06:05:55,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 15393 treesize of output 11553 [2022-07-14 06:05:55,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,380 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,380 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,388 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 11951 treesize of output 11891 [2022-07-14 06:05:55,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,663 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,738 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,738 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,740 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,740 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,768 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,768 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:05:55,771 INFO L244 Elim1Store]: Index analysis took 111 ms [2022-07-14 06:05:56,120 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:05:56,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 58 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 8 case distinctions, treesize of input 15408 treesize of output 11657