./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.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/uthash-2.0.2/uthash_SFH_test4-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 13:30:32,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 13:30:32,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 13:30:32,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 13:30:32,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 13:30:32,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 13:30:32,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 13:30:32,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 13:30:32,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 13:30:32,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 13:30:32,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 13:30:32,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 13:30:32,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 13:30:32,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 13:30:32,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 13:30:32,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 13:30:32,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 13:30:32,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 13:30:32,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 13:30:32,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 13:30:32,069 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 13:30:32,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 13:30:32,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 13:30:32,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 13:30:32,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 13:30:32,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 13:30:32,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 13:30:32,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 13:30:32,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 13:30:32,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 13:30:32,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 13:30:32,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 13:30:32,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 13:30:32,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 13:30:32,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 13:30:32,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 13:30:32,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 13:30:32,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 13:30:32,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 13:30:32,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 13:30:32,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 13:30:32,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 13:30:32,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-14 13:30:32,116 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 13:30:32,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 13:30:32,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 13:30:32,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 13:30:32,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 13:30:32,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 13:30:32,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 13:30:32,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 13:30:32,118 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 13:30:32,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 13:30:32,119 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 13:30:32,119 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 13:30:32,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 13:30:32,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 13:30:32,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 13:30:32,120 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-14 13:30:32,120 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-14 13:30:32,120 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-14 13:30:32,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 13:30:32,120 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 13:30:32,121 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 13:30:32,121 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 13:30:32,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 13:30:32,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 13:30:32,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 13:30:32,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 13:30:32,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 13:30:32,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 13:30:32,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 13:30:32,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 13:30:32,123 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 [2022-07-14 13:30:32,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 13:30:32,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 13:30:32,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 13:30:32,357 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 13:30:32,358 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 13:30:32,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2022-07-14 13:30:32,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8056bfcae/fb5be5872a054d069b33aedb5abd72b7/FLAGab2e9238c [2022-07-14 13:30:32,912 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 13:30:32,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2022-07-14 13:30:32,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8056bfcae/fb5be5872a054d069b33aedb5abd72b7/FLAGab2e9238c [2022-07-14 13:30:33,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8056bfcae/fb5be5872a054d069b33aedb5abd72b7 [2022-07-14 13:30:33,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 13:30:33,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 13:30:33,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 13:30:33,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 13:30:33,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 13:30:33,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:30:33" (1/1) ... [2022-07-14 13:30:33,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4839be4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:30:33, skipping insertion in model container [2022-07-14 13:30:33,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:30:33" (1/1) ... [2022-07-14 13:30:33,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 13:30:33,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 13:30:33,774 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i[33021,33034] [2022-07-14 13:30:33,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:30:33,928 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 13:30:33,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@13f53284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:30:33, skipping insertion in model container [2022-07-14 13:30:33,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 13:30:33,929 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-14 13:30:33,930 INFO L158 Benchmark]: Toolchain (without parser) took 497.89ms. Allocated memory is still 107.0MB. Free memory was 72.3MB in the beginning and 70.5MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 13:30:33,931 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 107.0MB. Free memory was 60.7MB in the beginning and 60.6MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 13:30:33,933 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.28ms. Allocated memory is still 107.0MB. Free memory was 72.3MB in the beginning and 70.5MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 13:30:33,935 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 107.0MB. Free memory was 60.7MB in the beginning and 60.6MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 496.28ms. Allocated memory is still 107.0MB. Free memory was 72.3MB in the beginning and 70.5MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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/uthash-2.0.2/uthash_SFH_test4-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 13:30:35,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 13:30:35,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 13:30:35,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 13:30:35,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 13:30:35,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 13:30:35,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 13:30:35,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 13:30:35,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 13:30:35,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 13:30:35,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 13:30:35,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 13:30:35,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 13:30:35,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 13:30:35,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 13:30:35,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 13:30:35,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 13:30:35,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 13:30:35,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 13:30:35,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 13:30:35,686 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 13:30:35,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 13:30:35,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 13:30:35,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 13:30:35,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 13:30:35,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 13:30:35,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 13:30:35,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 13:30:35,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 13:30:35,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 13:30:35,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 13:30:35,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 13:30:35,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 13:30:35,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 13:30:35,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 13:30:35,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 13:30:35,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 13:30:35,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 13:30:35,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 13:30:35,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 13:30:35,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 13:30:35,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 13:30:35,723 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-14 13:30:35,745 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 13:30:35,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 13:30:35,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 13:30:35,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 13:30:35,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 13:30:35,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 13:30:35,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 13:30:35,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 13:30:35,748 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 13:30:35,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 13:30:35,749 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 13:30:35,749 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 13:30:35,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 13:30:35,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 13:30:35,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 13:30:35,749 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-14 13:30:35,750 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-14 13:30:35,750 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-14 13:30:35,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 13:30:35,750 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 13:30:35,750 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-14 13:30:35,750 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-14 13:30:35,751 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 13:30:35,751 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 13:30:35,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 13:30:35,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 13:30:35,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 13:30:35,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 13:30:35,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 13:30:35,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 13:30:35,752 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-14 13:30:35,752 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-14 13:30:35,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-14 13:30:35,752 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 [2022-07-14 13:30:36,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 13:30:36,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 13:30:36,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 13:30:36,096 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 13:30:36,097 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 13:30:36,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2022-07-14 13:30:36,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afdab61cb/25d44202d3f14c37878c7cab3d73f12b/FLAG10556a8b5 [2022-07-14 13:30:36,566 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 13:30:36,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2022-07-14 13:30:36,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afdab61cb/25d44202d3f14c37878c7cab3d73f12b/FLAG10556a8b5 [2022-07-14 13:30:36,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afdab61cb/25d44202d3f14c37878c7cab3d73f12b [2022-07-14 13:30:36,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 13:30:36,912 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 13:30:36,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 13:30:36,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 13:30:36,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 13:30:36,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:30:36" (1/1) ... [2022-07-14 13:30:36,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5113723f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:30:36, skipping insertion in model container [2022-07-14 13:30:36,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:30:36" (1/1) ... [2022-07-14 13:30:36,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 13:30:36,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 13:30:37,254 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i[33021,33034] [2022-07-14 13:30:37,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:30:37,358 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-14 13:30:37,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 13:30:37,378 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i[33021,33034] [2022-07-14 13:30:37,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:30:37,445 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 13:30:37,467 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i[33021,33034] [2022-07-14 13:30:37,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:30:37,533 INFO L208 MainTranslator]: Completed translation [2022-07-14 13:30:37,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:30:37 WrapperNode [2022-07-14 13:30:37,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 13:30:37,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 13:30:37,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 13:30:37,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 13:30:37,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:30:37" (1/1) ... [2022-07-14 13:30:37,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:30:37" (1/1) ... [2022-07-14 13:30:37,661 INFO L137 Inliner]: procedures = 180, calls = 400, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1330 [2022-07-14 13:30:37,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 13:30:37,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 13:30:37,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 13:30:37,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 13:30:37,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:30:37" (1/1) ... [2022-07-14 13:30:37,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:30:37" (1/1) ... [2022-07-14 13:30:37,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:30:37" (1/1) ... [2022-07-14 13:30:37,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:30:37" (1/1) ... [2022-07-14 13:30:37,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:30:37" (1/1) ... [2022-07-14 13:30:37,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:30:37" (1/1) ... [2022-07-14 13:30:37,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:30:37" (1/1) ... [2022-07-14 13:30:37,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 13:30:37,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 13:30:37,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 13:30:37,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 13:30:37,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:30:37" (1/1) ... [2022-07-14 13:30:37,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 13:30:37,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:30:37,804 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 13:30:37,826 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 13:30:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-14 13:30:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-14 13:30:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-14 13:30:37,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-14 13:30:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-14 13:30:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-14 13:30:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 13:30:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 13:30:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 13:30:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 13:30:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 13:30:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 13:30:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-14 13:30:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-14 13:30:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 13:30:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 13:30:38,068 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 13:30:38,070 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 13:30:38,080 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-14 13:30:41,654 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 13:30:41,697 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 13:30:41,697 INFO L299 CfgBuilder]: Removed 69 assume(true) statements. [2022-07-14 13:30:41,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:30:41 BoogieIcfgContainer [2022-07-14 13:30:41,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 13:30:41,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 13:30:41,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 13:30:41,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 13:30:41,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 01:30:36" (1/3) ... [2022-07-14 13:30:41,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12285502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:30:41, skipping insertion in model container [2022-07-14 13:30:41,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:30:37" (2/3) ... [2022-07-14 13:30:41,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12285502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:30:41, skipping insertion in model container [2022-07-14 13:30:41,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:30:41" (3/3) ... [2022-07-14 13:30:41,724 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test4-2.i [2022-07-14 13:30:41,735 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 13:30:41,751 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 753 error locations. [2022-07-14 13:30:41,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 13:30:41,816 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@1d32ae44, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@773cc773 [2022-07-14 13:30:41,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 753 error locations. [2022-07-14 13:30:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 1473 states, 707 states have (on average 2.267326732673267) internal successors, (1603), 1464 states have internal predecessors, (1603), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-14 13:30:41,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 13:30:41,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:30:41,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 13:30:41,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:30:41,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:30:41,835 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2022-07-14 13:30:41,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:30:41,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123866647] [2022-07-14 13:30:41,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:30:41,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:30:41,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:30:41,848 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 13:30:41,878 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 13:30:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:30:42,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-14 13:30:42,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:30:42,074 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 13:30:42,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:30:42,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:30:42,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123866647] [2022-07-14 13:30:42,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123866647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:30:42,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:30:42,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 13:30:42,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688956934] [2022-07-14 13:30:42,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:30:42,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-14 13:30:42,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:30:42,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-14 13:30:42,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 13:30:42,100 INFO L87 Difference]: Start difference. First operand has 1473 states, 707 states have (on average 2.267326732673267) internal successors, (1603), 1464 states have internal predecessors, (1603), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:30:42,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:30:42,147 INFO L93 Difference]: Finished difference Result 1455 states and 1540 transitions. [2022-07-14 13:30:42,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-14 13:30:42,156 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-14 13:30:42,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:30:42,181 INFO L225 Difference]: With dead ends: 1455 [2022-07-14 13:30:42,181 INFO L226 Difference]: Without dead ends: 1453 [2022-07-14 13:30:42,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 13:30:42,185 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:30:42,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:30:42,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2022-07-14 13:30:42,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1453. [2022-07-14 13:30:42,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 698 states have (on average 2.157593123209169) internal successors, (1506), 1444 states have internal predecessors, (1506), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-14 13:30:42,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1538 transitions. [2022-07-14 13:30:42,259 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1538 transitions. Word has length 5 [2022-07-14 13:30:42,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:30:42,259 INFO L495 AbstractCegarLoop]: Abstraction has 1453 states and 1538 transitions. [2022-07-14 13:30:42,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:30:42,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1538 transitions. [2022-07-14 13:30:42,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 13:30:42,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:30:42,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 13:30:42,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-14 13:30:42,467 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 13:30:42,468 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:30:42,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:30:42,468 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2022-07-14 13:30:42,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:30:42,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453081137] [2022-07-14 13:30:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:30:42,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:30:42,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:30:42,471 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 13:30:42,473 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 13:30:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:30:42,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 13:30:42,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:30:42,642 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 13:30:42,651 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 13:30:42,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:30:42,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:30:42,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453081137] [2022-07-14 13:30:42,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453081137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:30:42,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:30:42,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 13:30:42,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516144356] [2022-07-14 13:30:42,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:30:42,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 13:30:42,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:30:42,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 13:30:42,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:30:42,657 INFO L87 Difference]: Start difference. First operand 1453 states and 1538 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:30:44,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:30:44,192 INFO L93 Difference]: Finished difference Result 1490 states and 1588 transitions. [2022-07-14 13:30:44,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 13:30:44,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-14 13:30:44,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:30:44,197 INFO L225 Difference]: With dead ends: 1490 [2022-07-14 13:30:44,197 INFO L226 Difference]: Without dead ends: 1490 [2022-07-14 13:30:44,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:30:44,198 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 1159 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-14 13:30:44,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 1015 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-14 13:30:44,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2022-07-14 13:30:44,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1436. [2022-07-14 13:30:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 774 states have (on average 2.0) internal successors, (1548), 1427 states have internal predecessors, (1548), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-14 13:30:44,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1580 transitions. [2022-07-14 13:30:44,255 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1580 transitions. Word has length 5 [2022-07-14 13:30:44,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:30:44,256 INFO L495 AbstractCegarLoop]: Abstraction has 1436 states and 1580 transitions. [2022-07-14 13:30:44,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:30:44,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1580 transitions. [2022-07-14 13:30:44,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 13:30:44,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:30:44,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 13:30:44,263 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 13:30:44,462 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 13:30:44,463 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:30:44,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:30:44,464 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2022-07-14 13:30:44,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:30:44,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079841904] [2022-07-14 13:30:44,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:30:44,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:30:44,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:30:44,469 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 13:30:44,471 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 13:30:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:30:44,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 13:30:44,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:30:44,618 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 13:30:44,628 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 13:30:44,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:30:44,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:30:44,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079841904] [2022-07-14 13:30:44,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079841904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:30:44,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:30:44,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 13:30:44,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850512229] [2022-07-14 13:30:44,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:30:44,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 13:30:44,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:30:44,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 13:30:44,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:30:44,630 INFO L87 Difference]: Start difference. First operand 1436 states and 1580 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:30:46,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:30:46,604 INFO L93 Difference]: Finished difference Result 1739 states and 1903 transitions. [2022-07-14 13:30:46,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 13:30:46,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-14 13:30:46,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:30:46,609 INFO L225 Difference]: With dead ends: 1739 [2022-07-14 13:30:46,609 INFO L226 Difference]: Without dead ends: 1739 [2022-07-14 13:30:46,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:30:46,610 INFO L413 NwaCegarLoop]: 1206 mSDtfsCounter, 504 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-14 13:30:46,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1796 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-14 13:30:46,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2022-07-14 13:30:46,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1592. [2022-07-14 13:30:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 940 states have (on average 1.9723404255319148) internal successors, (1854), 1583 states have internal predecessors, (1854), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-14 13:30:46,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 1886 transitions. [2022-07-14 13:30:46,644 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 1886 transitions. Word has length 5 [2022-07-14 13:30:46,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:30:46,644 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 1886 transitions. [2022-07-14 13:30:46,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:30:46,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 1886 transitions. [2022-07-14 13:30:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 13:30:46,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:30:46,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-14 13:30:46,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-14 13:30:46,851 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 13:30:46,852 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:30:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:30:46,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2022-07-14 13:30:46,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:30:46,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689032283] [2022-07-14 13:30:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:30:46,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:30:46,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:30:46,855 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 13:30:46,856 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 13:30:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:30:46,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 13:30:46,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:30:46,954 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 13:30:46,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:30:46,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:30:46,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689032283] [2022-07-14 13:30:46,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689032283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:30:46,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:30:46,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 13:30:46,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086199889] [2022-07-14 13:30:46,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:30:46,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 13:30:46,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:30:46,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 13:30:46,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:30:46,956 INFO L87 Difference]: Start difference. First operand 1592 states and 1886 transitions. Second operand has 3 states, 3 states have (on average 2.0) 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 13:30:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:30:47,013 INFO L93 Difference]: Finished difference Result 2936 states and 3493 transitions. [2022-07-14 13:30:47,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 13:30:47,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) 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 13:30:47,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:30:47,024 INFO L225 Difference]: With dead ends: 2936 [2022-07-14 13:30:47,024 INFO L226 Difference]: Without dead ends: 2936 [2022-07-14 13:30:47,024 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 13:30:47,025 INFO L413 NwaCegarLoop]: 1662 mSDtfsCounter, 1143 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:30:47,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 3091 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:30:47,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2022-07-14 13:30:47,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1593. [2022-07-14 13:30:47,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 941 states have (on average 1.9713071200850159) internal successors, (1855), 1584 states have internal predecessors, (1855), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-14 13:30:47,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 1887 transitions. [2022-07-14 13:30:47,048 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 1887 transitions. Word has length 6 [2022-07-14 13:30:47,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:30:47,048 INFO L495 AbstractCegarLoop]: Abstraction has 1593 states and 1887 transitions. [2022-07-14 13:30:47,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) 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 13:30:47,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 1887 transitions. [2022-07-14 13:30:47,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 13:30:47,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:30:47,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:30:47,060 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 13:30:47,256 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 13:30:47,256 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:30:47,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:30:47,257 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2022-07-14 13:30:47,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:30:47,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205516536] [2022-07-14 13:30:47,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:30:47,259 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:30:47,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:30:47,260 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 13:30:47,262 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 13:30:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:30:47,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 13:30:47,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:30:47,400 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 13:30:47,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:30:47,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:30:47,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205516536] [2022-07-14 13:30:47,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205516536] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:30:47,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:30:47,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 13:30:47,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489414606] [2022-07-14 13:30:47,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:30:47,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 13:30:47,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:30:47,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 13:30:47,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:30:47,402 INFO L87 Difference]: Start difference. First operand 1593 states and 1887 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:30:47,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:30:47,425 INFO L93 Difference]: Finished difference Result 1557 states and 1850 transitions. [2022-07-14 13:30:47,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 13:30:47,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-14 13:30:47,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:30:47,429 INFO L225 Difference]: With dead ends: 1557 [2022-07-14 13:30:47,429 INFO L226 Difference]: Without dead ends: 1557 [2022-07-14 13:30:47,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:30:47,430 INFO L413 NwaCegarLoop]: 1387 mSDtfsCounter, 1347 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:30:47,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1363 Valid, 1420 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:30:47,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2022-07-14 13:30:47,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1551. [2022-07-14 13:30:47,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1551 states, 923 states have (on average 1.9631635969664138) internal successors, (1812), 1542 states have internal predecessors, (1812), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-14 13:30:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 1844 transitions. [2022-07-14 13:30:47,447 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 1844 transitions. Word has length 11 [2022-07-14 13:30:47,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:30:47,448 INFO L495 AbstractCegarLoop]: Abstraction has 1551 states and 1844 transitions. [2022-07-14 13:30:47,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:30:47,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 1844 transitions. [2022-07-14 13:30:47,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-14 13:30:47,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:30:47,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:30:47,467 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 13:30:47,656 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 13:30:47,656 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:30:47,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:30:47,657 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2022-07-14 13:30:47,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:30:47,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736202668] [2022-07-14 13:30:47,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:30:47,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:30:47,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:30:47,659 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:30:47,660 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 13:30:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:30:47,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 13:30:47,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:30:47,792 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 13:30:47,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:30:47,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:30:47,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736202668] [2022-07-14 13:30:47,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736202668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:30:47,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:30:47,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:30:47,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128337263] [2022-07-14 13:30:47,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:30:47,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:30:47,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:30:47,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:30:47,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:30:47,794 INFO L87 Difference]: Start difference. First operand 1551 states and 1844 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:30:47,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:30:47,852 INFO L93 Difference]: Finished difference Result 1536 states and 1822 transitions. [2022-07-14 13:30:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 13:30:47,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-14 13:30:47,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:30:47,856 INFO L225 Difference]: With dead ends: 1536 [2022-07-14 13:30:47,856 INFO L226 Difference]: Without dead ends: 1536 [2022-07-14 13:30:47,857 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 13:30:47,857 INFO L413 NwaCegarLoop]: 1342 mSDtfsCounter, 1318 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:30:47,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 2710 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:30:47,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2022-07-14 13:30:47,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1529. [2022-07-14 13:30:47,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 915 states have (on average 1.9486338797814207) internal successors, (1783), 1520 states have internal predecessors, (1783), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-14 13:30:47,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 1815 transitions. [2022-07-14 13:30:47,873 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 1815 transitions. Word has length 13 [2022-07-14 13:30:47,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:30:47,874 INFO L495 AbstractCegarLoop]: Abstraction has 1529 states and 1815 transitions. [2022-07-14 13:30:47,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:30:47,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 1815 transitions. [2022-07-14 13:30:47,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-14 13:30:47,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:30:47,875 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] [2022-07-14 13:30:47,882 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 13:30:48,082 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 13:30:48,083 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:30:48,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:30:48,083 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2022-07-14 13:30:48,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:30:48,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852464711] [2022-07-14 13:30:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:30:48,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:30:48,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:30:48,085 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 13:30:48,086 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 13:30:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:30:48,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 13:30:48,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:30:48,214 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 13:30:48,248 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 13:30:48,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:30:48,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:30:48,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852464711] [2022-07-14 13:30:48,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852464711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:30:48,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:30:48,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 13:30:48,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131828978] [2022-07-14 13:30:48,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:30:48,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:30:48,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:30:48,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:30:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:30:48,250 INFO L87 Difference]: Start difference. First operand 1529 states and 1815 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:30:50,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:30:50,378 INFO L93 Difference]: Finished difference Result 2173 states and 2457 transitions. [2022-07-14 13:30:50,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 13:30:50,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-14 13:30:50,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:30:50,385 INFO L225 Difference]: With dead ends: 2173 [2022-07-14 13:30:50,385 INFO L226 Difference]: Without dead ends: 2173 [2022-07-14 13:30:50,386 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 13:30:50,386 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 2585 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2598 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:30:50,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2598 Valid, 1340 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-14 13:30:50,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2173 states. [2022-07-14 13:30:50,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2173 to 1525. [2022-07-14 13:30:50,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 915 states have (on average 1.9442622950819672) internal successors, (1779), 1516 states have internal predecessors, (1779), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-14 13:30:50,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 1811 transitions. [2022-07-14 13:30:50,412 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 1811 transitions. Word has length 27 [2022-07-14 13:30:50,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:30:50,413 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 1811 transitions. [2022-07-14 13:30:50,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:30:50,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 1811 transitions. [2022-07-14 13:30:50,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-14 13:30:50,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:30:50,414 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] [2022-07-14 13:30:50,433 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 13:30:50,621 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 13:30:50,622 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:30:50,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:30:50,622 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2022-07-14 13:30:50,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:30:50,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31396288] [2022-07-14 13:30:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:30:50,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:30:50,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:30:50,625 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 13:30:50,626 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 13:30:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:30:50,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 13:30:50,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:30:50,774 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 6 treesize of output 5 [2022-07-14 13:30:50,902 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 13:30:50,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:30:50,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:30:50,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31396288] [2022-07-14 13:30:50,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31396288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:30:50,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:30:50,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 13:30:50,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146567018] [2022-07-14 13:30:50,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:30:50,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:30:50,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:30:50,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:30:50,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:30:50,904 INFO L87 Difference]: Start difference. First operand 1525 states and 1811 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:30:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:30:53,618 INFO L93 Difference]: Finished difference Result 1908 states and 2095 transitions. [2022-07-14 13:30:53,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 13:30:53,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-14 13:30:53,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:30:53,624 INFO L225 Difference]: With dead ends: 1908 [2022-07-14 13:30:53,624 INFO L226 Difference]: Without dead ends: 1908 [2022-07-14 13:30:53,624 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 13:30:53,625 INFO L413 NwaCegarLoop]: 1070 mSDtfsCounter, 1061 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-14 13:30:53,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 2254 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-14 13:30:53,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2022-07-14 13:30:53,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1521. [2022-07-14 13:30:53,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 915 states have (on average 1.9398907103825136) internal successors, (1775), 1512 states have internal predecessors, (1775), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-14 13:30:53,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1807 transitions. [2022-07-14 13:30:53,642 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1807 transitions. Word has length 27 [2022-07-14 13:30:53,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:30:53,642 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 1807 transitions. [2022-07-14 13:30:53,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:30:53,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1807 transitions. [2022-07-14 13:30:53,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-14 13:30:53,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:30:53,643 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:30:53,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-14 13:30:53,851 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 13:30:53,851 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:30:53,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:30:53,851 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2022-07-14 13:30:53,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:30:53,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692050132] [2022-07-14 13:30:53,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:30:53,852 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:30:53,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:30:53,853 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 13:30:53,855 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 13:30:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:30:54,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 13:30:54,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:30:54,081 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 13:30:54,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:30:54,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:30:54,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692050132] [2022-07-14 13:30:54,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692050132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:30:54,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:30:54,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:30:54,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086886711] [2022-07-14 13:30:54,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:30:54,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:30:54,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:30:54,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:30:54,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:30:54,087 INFO L87 Difference]: Start difference. First operand 1521 states and 1807 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 13:30:54,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:30:54,123 INFO L93 Difference]: Finished difference Result 1521 states and 1803 transitions. [2022-07-14 13:30:54,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 13:30:54,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-07-14 13:30:54,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:30:54,127 INFO L225 Difference]: With dead ends: 1521 [2022-07-14 13:30:54,127 INFO L226 Difference]: Without dead ends: 1521 [2022-07-14 13:30:54,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 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 13:30:54,129 INFO L413 NwaCegarLoop]: 1336 mSDtfsCounter, 1294 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:30:54,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1310 Valid, 2688 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:30:54,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2022-07-14 13:30:54,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1515. [2022-07-14 13:30:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 909 states have (on average 1.9416941694169416) internal successors, (1765), 1506 states have internal predecessors, (1765), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-14 13:30:54,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1797 transitions. [2022-07-14 13:30:54,152 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1797 transitions. Word has length 42 [2022-07-14 13:30:54,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:30:54,153 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 1797 transitions. [2022-07-14 13:30:54,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 13:30:54,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1797 transitions. [2022-07-14 13:30:54,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-14 13:30:54,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:30:54,157 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, 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 13:30:54,173 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 13:30:54,365 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 13:30:54,365 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:30:54,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:30:54,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2022-07-14 13:30:54,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:30:54,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274003547] [2022-07-14 13:30:54,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:30:54,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:30:54,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:30:54,370 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 13:30:54,407 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 13:30:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:30:54,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 13:30:54,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:30:54,683 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 13:30:54,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:30:54,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:30:54,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274003547] [2022-07-14 13:30:54,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274003547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:30:54,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:30:54,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 13:30:54,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578118393] [2022-07-14 13:30:54,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:30:54,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 13:30:54,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:30:54,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 13:30:54,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:30:54,686 INFO L87 Difference]: Start difference. First operand 1515 states and 1797 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 13:30:54,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:30:54,834 INFO L93 Difference]: Finished difference Result 1756 states and 2047 transitions. [2022-07-14 13:30:54,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 13:30:54,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 13:30:54,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:30:54,840 INFO L225 Difference]: With dead ends: 1756 [2022-07-14 13:30:54,840 INFO L226 Difference]: Without dead ends: 1756 [2022-07-14 13:30:54,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 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 13:30:54,841 INFO L413 NwaCegarLoop]: 1415 mSDtfsCounter, 269 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:30:54,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 2626 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:30:54,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2022-07-14 13:30:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1561. [2022-07-14 13:30:54,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 955 states have (on average 1.8963350785340314) internal successors, (1811), 1552 states have internal predecessors, (1811), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-14 13:30:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 1843 transitions. [2022-07-14 13:30:54,887 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 1843 transitions. Word has length 50 [2022-07-14 13:30:54,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:30:54,888 INFO L495 AbstractCegarLoop]: Abstraction has 1561 states and 1843 transitions. [2022-07-14 13:30:54,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 13:30:54,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 1843 transitions. [2022-07-14 13:30:54,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-14 13:30:54,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:30:54,889 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, 1, 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 13:30:54,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-07-14 13:30:55,097 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 13:30:55,098 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:30:55,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:30:55,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2022-07-14 13:30:55,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:30:55,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992495818] [2022-07-14 13:30:55,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:30:55,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:30:55,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:30:55,106 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 13:30:55,107 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 13:30:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:30:55,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 13:30:55,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:30:55,438 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 13:30:55,442 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 13:30:55,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 13:30:55,717 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 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-14 13:30:55,726 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 13:30:55,726 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 13:30:55,738 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 13:30:55,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:30:55,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:30:55,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992495818] [2022-07-14 13:30:55,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992495818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:30:55,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:30:55,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 13:30:55,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996683684] [2022-07-14 13:30:55,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:30:55,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:30:55,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:30:55,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:30:55,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:30:55,740 INFO L87 Difference]: Start difference. First operand 1561 states and 1843 transitions. Second operand has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 13:30:57,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:30:57,472 INFO L93 Difference]: Finished difference Result 1530 states and 1766 transitions. [2022-07-14 13:30:57,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 13:30:57,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-07-14 13:30:57,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:30:57,476 INFO L225 Difference]: With dead ends: 1530 [2022-07-14 13:30:57,476 INFO L226 Difference]: Without dead ends: 1530 [2022-07-14 13:30:57,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 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 13:30:57,476 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 2001 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-14 13:30:57,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2007 Valid, 790 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-14 13:30:57,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2022-07-14 13:30:57,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1311. [2022-07-14 13:30:57,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 789 states have (on average 1.7870722433460076) internal successors, (1410), 1302 states have internal predecessors, (1410), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-14 13:30:57,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1442 transitions. [2022-07-14 13:30:57,491 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1442 transitions. Word has length 53 [2022-07-14 13:30:57,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:30:57,491 INFO L495 AbstractCegarLoop]: Abstraction has 1311 states and 1442 transitions. [2022-07-14 13:30:57,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 13:30:57,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1442 transitions. [2022-07-14 13:30:57,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-14 13:30:57,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:30:57,492 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, 1, 1, 1, 1, 1, 1, 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 13:30:57,504 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 13:30:57,704 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 13:30:57,704 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:30:57,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:30:57,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2022-07-14 13:30:57,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:30:57,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579255554] [2022-07-14 13:30:57,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:30:57,705 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:30:57,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:30:57,707 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 13:30:57,708 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 13:30:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:30:57,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 13:30:57,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:30:57,927 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 13:30:57,961 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 13:30:57,977 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 21 treesize of output 9 [2022-07-14 13:30:57,984 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 13:30:57,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:30:57,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:30:57,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579255554] [2022-07-14 13:30:57,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579255554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:30:57,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:30:57,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:30:57,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624806565] [2022-07-14 13:30:57,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:30:57,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:30:57,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:30:57,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:30:57,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:30:57,987 INFO L87 Difference]: Start difference. First operand 1311 states and 1442 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 13:30:59,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:30:59,923 INFO L93 Difference]: Finished difference Result 1310 states and 1441 transitions. [2022-07-14 13:30:59,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 13:30:59,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-07-14 13:30:59,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:30:59,926 INFO L225 Difference]: With dead ends: 1310 [2022-07-14 13:30:59,926 INFO L226 Difference]: Without dead ends: 1310 [2022-07-14 13:30:59,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-14 13:30:59,927 INFO L413 NwaCegarLoop]: 1256 mSDtfsCounter, 4 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-14 13:30:59,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3174 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-14 13:30:59,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-07-14 13:30:59,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1310. [2022-07-14 13:30:59,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 789 states have (on average 1.785804816223067) internal successors, (1409), 1301 states have internal predecessors, (1409), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-14 13:30:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1441 transitions. [2022-07-14 13:30:59,940 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1441 transitions. Word has length 58 [2022-07-14 13:30:59,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:30:59,940 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 1441 transitions. [2022-07-14 13:30:59,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 13:30:59,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1441 transitions. [2022-07-14 13:30:59,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-14 13:30:59,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:30:59,941 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, 1, 1, 1, 1, 1, 1, 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 13:30:59,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-07-14 13:31:00,150 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 13:31:00,150 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:31:00,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:31:00,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2022-07-14 13:31:00,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:31:00,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011607655] [2022-07-14 13:31:00,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:31:00,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:31:00,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:31:00,153 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 13:31:00,154 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 13:31:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:31:00,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 13:31:00,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:31:00,352 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 13:31:00,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 13:31:00,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 13:31:00,406 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 21 treesize of output 9 [2022-07-14 13:31:00,410 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 19 treesize of output 7 [2022-07-14 13:31:00,419 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 13:31:00,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:31:00,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:31:00,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011607655] [2022-07-14 13:31:00,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011607655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:31:00,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:31:00,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:31:00,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322646051] [2022-07-14 13:31:00,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:31:00,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:31:00,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:31:00,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:31:00,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:31:00,420 INFO L87 Difference]: Start difference. First operand 1310 states and 1441 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 13:31:02,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:31:02,921 INFO L93 Difference]: Finished difference Result 1309 states and 1440 transitions. [2022-07-14 13:31:02,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 13:31:02,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-07-14 13:31:02,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:31:02,925 INFO L225 Difference]: With dead ends: 1309 [2022-07-14 13:31:02,925 INFO L226 Difference]: Without dead ends: 1309 [2022-07-14 13:31:02,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-14 13:31:02,926 INFO L413 NwaCegarLoop]: 1256 mSDtfsCounter, 2 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-14 13:31:02,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3213 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-14 13:31:02,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2022-07-14 13:31:02,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1309. [2022-07-14 13:31:02,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 788 states have (on average 1.7868020304568528) internal successors, (1408), 1300 states have internal predecessors, (1408), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-14 13:31:02,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1440 transitions. [2022-07-14 13:31:02,938 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1440 transitions. Word has length 58 [2022-07-14 13:31:02,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:31:02,939 INFO L495 AbstractCegarLoop]: Abstraction has 1309 states and 1440 transitions. [2022-07-14 13:31:02,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 13:31:02,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1440 transitions. [2022-07-14 13:31:02,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-14 13:31:02,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:31:02,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:02,949 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 13:31:03,148 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 13:31:03,149 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:31:03,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:31:03,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1427434238, now seen corresponding path program 1 times [2022-07-14 13:31:03,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:31:03,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127834442] [2022-07-14 13:31:03,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:31:03,150 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:31:03,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:31:03,151 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 13:31:03,152 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 13:31:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:31:03,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 13:31:03,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:31:03,393 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 13:31:03,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:31:03,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:31:03,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127834442] [2022-07-14 13:31:03,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127834442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:31:03,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:31:03,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:31:03,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143948661] [2022-07-14 13:31:03,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:31:03,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:31:03,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:31:03,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:31:03,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:31:03,394 INFO L87 Difference]: Start difference. First operand 1309 states and 1440 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:31:03,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:31:03,438 INFO L93 Difference]: Finished difference Result 1312 states and 1445 transitions. [2022-07-14 13:31:03,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 13:31:03,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2022-07-14 13:31:03,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:31:03,444 INFO L225 Difference]: With dead ends: 1312 [2022-07-14 13:31:03,444 INFO L226 Difference]: Without dead ends: 1312 [2022-07-14 13:31:03,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 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 13:31:03,445 INFO L413 NwaCegarLoop]: 1255 mSDtfsCounter, 2 mSDsluCounter, 2502 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3757 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:31:03,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3757 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:31:03,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2022-07-14 13:31:03,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1312. [2022-07-14 13:31:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 790 states have (on average 1.7860759493670886) internal successors, (1411), 1303 states have internal predecessors, (1411), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2022-07-14 13:31:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1445 transitions. [2022-07-14 13:31:03,459 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1445 transitions. Word has length 66 [2022-07-14 13:31:03,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:31:03,460 INFO L495 AbstractCegarLoop]: Abstraction has 1312 states and 1445 transitions. [2022-07-14 13:31:03,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:31:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1445 transitions. [2022-07-14 13:31:03,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-14 13:31:03,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:31:03,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:03,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-07-14 13:31:03,671 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 13:31:03,671 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:31:03,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:31:03,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1840539799, now seen corresponding path program 1 times [2022-07-14 13:31:03,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:31:03,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184359797] [2022-07-14 13:31:03,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:31:03,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:31:03,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:31:03,690 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 13:31:03,691 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 13:31:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:31:03,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 13:31:03,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:31:03,943 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 13:31:03,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:31:04,025 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 13:31:04,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:31:04,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184359797] [2022-07-14 13:31:04,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184359797] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:31:04,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:31:04,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-14 13:31:04,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311357309] [2022-07-14 13:31:04,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:31:04,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 13:31:04,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:31:04,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 13:31:04,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-14 13:31:04,028 INFO L87 Difference]: Start difference. First operand 1312 states and 1445 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:31:04,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:31:04,190 INFO L93 Difference]: Finished difference Result 1324 states and 1463 transitions. [2022-07-14 13:31:04,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 13:31:04,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2022-07-14 13:31:04,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:31:04,194 INFO L225 Difference]: With dead ends: 1324 [2022-07-14 13:31:04,194 INFO L226 Difference]: Without dead ends: 1324 [2022-07-14 13:31:04,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-07-14 13:31:04,195 INFO L413 NwaCegarLoop]: 1255 mSDtfsCounter, 12 mSDsluCounter, 7487 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8742 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:31:04,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 8742 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:31:04,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2022-07-14 13:31:04,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1322. [2022-07-14 13:31:04,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 799 states have (on average 1.7847309136420526) internal successors, (1426), 1312 states have internal predecessors, (1426), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2022-07-14 13:31:04,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1460 transitions. [2022-07-14 13:31:04,237 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1460 transitions. Word has length 67 [2022-07-14 13:31:04,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:31:04,237 INFO L495 AbstractCegarLoop]: Abstraction has 1322 states and 1460 transitions. [2022-07-14 13:31:04,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:31:04,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1460 transitions. [2022-07-14 13:31:04,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-14 13:31:04,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:31:04,238 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:31:04,257 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 13:31:04,448 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 13:31:04,448 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:31:04,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:31:04,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1070860606, now seen corresponding path program 2 times [2022-07-14 13:31:04,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:31:04,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878010734] [2022-07-14 13:31:04,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:31:04,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:31:04,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:31:04,451 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 13:31:04,459 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 13:31:04,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:31:04,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:31:04,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 13:31:04,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:31:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:31:04,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:31:05,057 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:31:05,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:31:05,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878010734] [2022-07-14 13:31:05,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878010734] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:31:05,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:31:05,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-14 13:31:05,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554053650] [2022-07-14 13:31:05,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:31:05,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-14 13:31:05,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:31:05,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-14 13:31:05,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-14 13:31:05,058 INFO L87 Difference]: Start difference. First operand 1322 states and 1460 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:31:05,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:31:05,578 INFO L93 Difference]: Finished difference Result 1343 states and 1492 transitions. [2022-07-14 13:31:05,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-14 13:31:05,579 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2022-07-14 13:31:05,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:31:05,582 INFO L225 Difference]: With dead ends: 1343 [2022-07-14 13:31:05,582 INFO L226 Difference]: Without dead ends: 1339 [2022-07-14 13:31:05,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2022-07-14 13:31:05,583 INFO L413 NwaCegarLoop]: 1258 mSDtfsCounter, 51 mSDsluCounter, 6268 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 7526 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 13:31:05,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 7526 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 13:31:05,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2022-07-14 13:31:05,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1331. [2022-07-14 13:31:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 808 states have (on average 1.7797029702970297) internal successors, (1438), 1321 states have internal predecessors, (1438), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2022-07-14 13:31:05,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1472 transitions. [2022-07-14 13:31:05,605 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1472 transitions. Word has length 70 [2022-07-14 13:31:05,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:31:05,605 INFO L495 AbstractCegarLoop]: Abstraction has 1331 states and 1472 transitions. [2022-07-14 13:31:05,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:31:05,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1472 transitions. [2022-07-14 13:31:05,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-14 13:31:05,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:31:05,606 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:31:05,625 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 13:31:05,816 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 13:31:05,816 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:31:05,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:31:05,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1953798814, now seen corresponding path program 3 times [2022-07-14 13:31:05,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:31:05,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643754524] [2022-07-14 13:31:05,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:31:05,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:31:05,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:31:05,820 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 13:31:05,821 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 13:31:06,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-14 13:31:06,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:31:06,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 13:31:06,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:31:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:31:06,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:31:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:31:07,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:31:07,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643754524] [2022-07-14 13:31:07,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643754524] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:31:07,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:31:07,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-14 13:31:07,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601683083] [2022-07-14 13:31:07,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:31:07,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-14 13:31:07,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:31:07,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-14 13:31:07,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-07-14 13:31:07,108 INFO L87 Difference]: Start difference. First operand 1331 states and 1472 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:31:09,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:31:09,674 INFO L93 Difference]: Finished difference Result 1373 states and 1548 transitions. [2022-07-14 13:31:09,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-14 13:31:09,675 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2022-07-14 13:31:09,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:31:09,678 INFO L225 Difference]: With dead ends: 1373 [2022-07-14 13:31:09,678 INFO L226 Difference]: Without dead ends: 1367 [2022-07-14 13:31:09,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2022-07-14 13:31:09,679 INFO L413 NwaCegarLoop]: 1262 mSDtfsCounter, 189 mSDsluCounter, 13826 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 15088 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-14 13:31:09,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 15088 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-14 13:31:09,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2022-07-14 13:31:09,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1349. [2022-07-14 13:31:09,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 826 states have (on average 1.7687651331719128) internal successors, (1461), 1339 states have internal predecessors, (1461), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2022-07-14 13:31:09,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1495 transitions. [2022-07-14 13:31:09,695 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1495 transitions. Word has length 76 [2022-07-14 13:31:09,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:31:09,695 INFO L495 AbstractCegarLoop]: Abstraction has 1349 states and 1495 transitions. [2022-07-14 13:31:09,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:31:09,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1495 transitions. [2022-07-14 13:31:09,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-14 13:31:09,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:31:09,697 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:31:09,708 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 13:31:09,907 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 13:31:09,908 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:31:09,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:31:09,909 INFO L85 PathProgramCache]: Analyzing trace with hash -613669538, now seen corresponding path program 4 times [2022-07-14 13:31:09,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:31:09,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921278423] [2022-07-14 13:31:09,909 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 13:31:09,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:31:09,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:31:09,911 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 13:31:09,912 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 13:31:10,267 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 13:31:10,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:31:10,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-14 13:31:10,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:31:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:31:10,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:31:11,845 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:31:11,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:31:11,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921278423] [2022-07-14 13:31:11,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921278423] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:31:11,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:31:11,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-07-14 13:31:11,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906019617] [2022-07-14 13:31:11,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:31:11,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-14 13:31:11,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:31:11,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-14 13:31:11,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2022-07-14 13:31:11,847 INFO L87 Difference]: Start difference. First operand 1349 states and 1495 transitions. Second operand has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:31:20,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:31:20,531 INFO L93 Difference]: Finished difference Result 1429 states and 1628 transitions. [2022-07-14 13:31:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-07-14 13:31:20,532 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 88 [2022-07-14 13:31:20,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:31:20,542 INFO L225 Difference]: With dead ends: 1429 [2022-07-14 13:31:20,542 INFO L226 Difference]: Without dead ends: 1425 [2022-07-14 13:31:20,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2022-07-14 13:31:20,545 INFO L413 NwaCegarLoop]: 1275 mSDtfsCounter, 507 mSDsluCounter, 29214 mSDsCounter, 0 mSdLazyCounter, 2979 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 30489 SdHoareTripleChecker+Invalid, 3425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:31:20,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 30489 Invalid, 3425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2979 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-14 13:31:20,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2022-07-14 13:31:20,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1383. [2022-07-14 13:31:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 860 states have (on average 1.7523255813953489) internal successors, (1507), 1373 states have internal predecessors, (1507), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2022-07-14 13:31:20,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1541 transitions. [2022-07-14 13:31:20,582 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1541 transitions. Word has length 88 [2022-07-14 13:31:20,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:31:20,583 INFO L495 AbstractCegarLoop]: Abstraction has 1383 states and 1541 transitions. [2022-07-14 13:31:20,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:31:20,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1541 transitions. [2022-07-14 13:31:20,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-14 13:31:20,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:31:20,584 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:31:20,609 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 13:31:20,795 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 13:31:20,795 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:31:20,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:31:20,796 INFO L85 PathProgramCache]: Analyzing trace with hash 97867710, now seen corresponding path program 5 times [2022-07-14 13:31:20,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:31:20,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507478881] [2022-07-14 13:31:20,797 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 13:31:20,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:31:20,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:31:20,798 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 13:31:20,801 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 13:31:22,060 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-07-14 13:31:22,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:31:22,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 59 conjunts are in the unsatisfiable core [2022-07-14 13:31:22,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:31:22,113 INFO L356 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-07-14 13:31:22,114 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 12 treesize of output 21 [2022-07-14 13:31:22,328 INFO L356 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2022-07-14 13:31:22,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2022-07-14 13:31:22,372 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 13:31:22,552 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 40 treesize of output 22 [2022-07-14 13:31:25,111 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_9 (_ BitVec 1)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (or (= (bvadd (bvneg v_arrayElimCell_9) (select |c_#valid| (_ bv0 32))) (_ bv0 1)) (= v_arrayElimCell_11 (_ bv0 32))) (= (_ bv1 1) (select |c_#valid| v_arrayElimCell_11)) (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (or (= v_arrayElimCell_9 (_ bv0 1)) (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ bv0 32))))) (exists ((v_ArrVal_1577 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1577) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:31:25,247 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_9 (_ BitVec 1)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (or (= (bvadd (bvneg v_arrayElimCell_9) (select |c_#valid| (_ bv0 32))) (_ bv0 1)) (= v_arrayElimCell_11 (_ bv0 32))) (= (_ bv1 1) (select |c_#valid| v_arrayElimCell_11)) (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (or (= v_arrayElimCell_9 (_ bv0 1)) (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ bv0 32))))) (exists ((v_ArrVal_1578 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1578)))) is different from true [2022-07-14 13:31:25,351 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_9 (_ BitVec 1)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (or (= (bvadd (bvneg v_arrayElimCell_9) (select |c_#valid| (_ bv0 32))) (_ bv0 1)) (= v_arrayElimCell_11 (_ bv0 32))) (= (_ bv1 1) (select |c_#valid| v_arrayElimCell_11)) (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (or (= v_arrayElimCell_9 (_ bv0 1)) (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ bv0 32))))) (exists ((v_ArrVal_1579 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1579) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:31:25,943 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_9 (_ BitVec 1)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (or (= (bvadd (bvneg v_arrayElimCell_9) (select |c_#valid| (_ bv0 32))) (_ bv0 1)) (= v_arrayElimCell_11 (_ bv0 32))) (= (_ bv1 1) (select |c_#valid| v_arrayElimCell_11)) (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (or (= v_arrayElimCell_9 (_ bv0 1)) (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ bv0 32))))) (exists ((v_ArrVal_1584 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1584)))) is different from true [2022-07-14 13:31:26,584 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_9 (_ BitVec 1)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (or (= (bvadd (bvneg v_arrayElimCell_9) (select |c_#valid| (_ bv0 32))) (_ bv0 1)) (= v_arrayElimCell_11 (_ bv0 32))) (= (_ bv1 1) (select |c_#valid| v_arrayElimCell_11)) (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (or (= v_arrayElimCell_9 (_ bv0 1)) (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ bv0 32))))) (exists ((v_ArrVal_1590 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1590) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:31:27,365 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_9 (_ BitVec 1)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (or (= (bvadd (bvneg v_arrayElimCell_9) (select |c_#valid| (_ bv0 32))) (_ bv0 1)) (= v_arrayElimCell_11 (_ bv0 32))) (= (_ bv1 1) (select |c_#valid| v_arrayElimCell_11)) (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (or (= v_arrayElimCell_9 (_ bv0 1)) (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ bv0 32))))) (exists ((v_ArrVal_1597 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1597)))) is different from true [2022-07-14 13:31:27,564 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_9 (_ BitVec 1)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (or (= (bvadd (bvneg v_arrayElimCell_9) (select |c_#valid| (_ bv0 32))) (_ bv0 1)) (= v_arrayElimCell_11 (_ bv0 32))) (= (_ bv1 1) (select |c_#valid| v_arrayElimCell_11)) (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (or (= v_arrayElimCell_9 (_ bv0 1)) (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ bv0 32))))) (exists ((v_ArrVal_1599 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1599) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:31:27,821 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_9 (_ BitVec 1)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (or (= (bvadd (bvneg v_arrayElimCell_9) (select |c_#valid| (_ bv0 32))) (_ bv0 1)) (= v_arrayElimCell_11 (_ bv0 32))) (= (_ bv1 1) (select |c_#valid| v_arrayElimCell_11)) (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (or (= v_arrayElimCell_9 (_ bv0 1)) (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ bv0 32))))) (exists ((v_ArrVal_1602 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1602)))) is different from true [2022-07-14 13:31:27,909 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_9 (_ BitVec 1)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (or (= (bvadd (bvneg v_arrayElimCell_9) (select |c_#valid| (_ bv0 32))) (_ bv0 1)) (= v_arrayElimCell_11 (_ bv0 32))) (= (_ bv1 1) (select |c_#valid| v_arrayElimCell_11)) (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (or (= v_arrayElimCell_9 (_ bv0 1)) (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ bv0 32))))) (exists ((v_ArrVal_1603 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1603)))) is different from true [2022-07-14 13:31:28,251 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-14 13:31:28,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 51 [2022-07-14 13:31:28,426 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 49 treesize of output 25 [2022-07-14 13:31:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 595 trivial. 360 not checked. [2022-07-14 13:31:28,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:31:28,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:31:28,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507478881] [2022-07-14 13:31:28,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507478881] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:31:28,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [92427071] [2022-07-14 13:31:28,712 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 13:31:28,712 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 13:31:28,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 13:31:28,727 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 13:31:28,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-07-14 13:32:53,794 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-07-14 13:32:53,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:32:54,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-14 13:32:54,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:32:54,041 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-14 13:32:54,042 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 12 treesize of output 17 [2022-07-14 13:32:54,158 INFO L356 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2022-07-14 13:32:54,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 41 [2022-07-14 13:32:54,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 13:32:54,310 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 32 treesize of output 14 [2022-07-14 13:32:56,331 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-14 13:32:56,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2022-07-14 13:32:56,384 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 41 treesize of output 17 [2022-07-14 13:32:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2022-07-14 13:32:56,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:32:56,598 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2097) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1))) is different from false [2022-07-14 13:32:56,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [92427071] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:32:56,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:32:56,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 25 [2022-07-14 13:32:56,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609789035] [2022-07-14 13:32:56,600 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:32:56,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-14 13:32:56,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:32:56,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-14 13:32:56,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=341, Unknown=36, NotChecked=470, Total=930 [2022-07-14 13:32:56,602 INFO L87 Difference]: Start difference. First operand 1383 states and 1541 transitions. Second operand has 27 states, 24 states have (on average 6.125) internal successors, (147), 26 states have internal predecessors, (147), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 13:33:02,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:33:02,583 INFO L93 Difference]: Finished difference Result 2497 states and 2728 transitions. [2022-07-14 13:33:02,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-14 13:33:02,584 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 6.125) internal successors, (147), 26 states have internal predecessors, (147), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 110 [2022-07-14 13:33:02,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:33:02,587 INFO L225 Difference]: With dead ends: 2497 [2022-07-14 13:33:02,587 INFO L226 Difference]: Without dead ends: 2493 [2022-07-14 13:33:02,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 116 SyntacticMatches, 82 SemanticMatches, 38 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=170, Invalid=686, Unknown=54, NotChecked=650, Total=1560 [2022-07-14 13:33:02,588 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 1185 mSDsluCounter, 7576 mSDsCounter, 0 mSdLazyCounter, 5091 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 8309 SdHoareTripleChecker+Invalid, 22910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 5091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17785 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-14 13:33:02,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 8309 Invalid, 22910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 5091 Invalid, 0 Unknown, 17785 Unchecked, 5.5s Time] [2022-07-14 13:33:02,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2022-07-14 13:33:02,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 1745. [2022-07-14 13:33:02,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1220 states have (on average 1.7024590163934425) internal successors, (2077), 1730 states have internal predecessors, (2077), 20 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (22), 11 states have call predecessors, (22), 20 states have call successors, (22) [2022-07-14 13:33:02,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2119 transitions. [2022-07-14 13:33:02,613 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2119 transitions. Word has length 110 [2022-07-14 13:33:02,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:33:02,613 INFO L495 AbstractCegarLoop]: Abstraction has 1745 states and 2119 transitions. [2022-07-14 13:33:02,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 6.125) internal successors, (147), 26 states have internal predecessors, (147), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 13:33:02,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2119 transitions. [2022-07-14 13:33:02,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-14 13:33:02,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:33:02,614 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:33:02,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-14 13:33:02,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-07-14 13:33:03,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-14 13:33:03,029 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2022-07-14 13:33:03,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:33:03,029 INFO L85 PathProgramCache]: Analyzing trace with hash 97867711, now seen corresponding path program 1 times [2022-07-14 13:33:03,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:33:03,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015916660] [2022-07-14 13:33:03,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:33:03,030 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:33:03,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:33:03,031 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 13:33:03,034 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 13:33:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:33:03,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 110 conjunts are in the unsatisfiable core [2022-07-14 13:33:03,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:33:03,758 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 13:33:03,879 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 13:33:03,886 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 13:33:03,886 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 13:33:03,903 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 13:33:03,909 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 13:33:03,975 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 18 treesize of output 10 [2022-07-14 13:33:03,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-14 13:33:04,009 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2457 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2457))) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2456 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2456)))) is different from true [2022-07-14 13:33:04,015 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2459 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2459) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2458 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2458)))) is different from true [2022-07-14 13:33:04,022 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2460 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2460) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2461 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2461))) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32)))) is different from true [2022-07-14 13:33:04,069 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2467 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2467))) (exists ((v_ArrVal_2466 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2466) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:33:04,111 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2473 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2473))) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2472 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2472)))) is different from true [2022-07-14 13:33:04,118 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2475 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2475) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2474 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2474) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32)))) is different from true [2022-07-14 13:33:04,143 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2478 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2478) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2479 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2479))) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32)))) is different from true [2022-07-14 13:33:04,168 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2483 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2483) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2482 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2482) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:33:04,191 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2486 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2486))) (exists ((v_ArrVal_2487 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2487) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32)))) is different from true [2022-07-14 13:33:04,198 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2488 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2488))) (exists ((v_ArrVal_2489 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2489))) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32)))) is different from true [2022-07-14 13:33:04,223 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2493 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2493) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2492 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2492) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-14 13:33:04,230 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2495 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2495) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2494 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2494)))) is different from true [2022-07-14 13:33:04,237 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2497 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2497) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2496 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2496) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:33:04,244 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2499 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2499) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2498 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2498) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32)))) is different from true [2022-07-14 13:33:04,251 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2501 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2501))) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2500 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2500)))) is different from true [2022-07-14 13:33:04,258 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2503 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2503) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2502 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2502)))) is different from true [2022-07-14 13:33:04,300 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2509 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2509) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2508) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-14 13:33:04,307 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2511 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2511))) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2510 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2510)))) is different from true [2022-07-14 13:33:04,314 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2512 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2512) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2513 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2513)))) is different from true [2022-07-14 13:33:04,359 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2516 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2516) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2517 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2517))) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32)))) is different from true [2022-07-14 13:33:04,382 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2520 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2520))) (exists ((v_ArrVal_2521 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2521)))) is different from true [2022-07-14 13:33:04,389 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2522 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2522))) (exists ((v_ArrVal_2523 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2523) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32)))) is different from true [2022-07-14 13:33:04,439 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2527 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2527))) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2526 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2526) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:33:04,475 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2531 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2531))) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2530 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2530)))) is different from true [2022-07-14 13:33:04,491 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2532 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2532) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2533 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2533) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32)))) is different from true [2022-07-14 13:33:04,498 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2534 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2534) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2535 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2535)))) is different from true [2022-07-14 13:33:04,505 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2537 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2537) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2536 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2536)))) is different from true [2022-07-14 13:33:04,511 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2539 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2539))) (exists ((v_ArrVal_2538 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2538))) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32)))) is different from true [2022-07-14 13:33:04,518 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2540 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2540) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32))) (exists ((v_ArrVal_2541 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2541) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-14 13:33:04,535 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2543 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2543))) (exists ((v_ArrVal_2542 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2542))) (exists ((v_arrayElimCell_24 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_24) (_ bv44 32)))) is different from true [2022-07-14 13:33:04,557 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-14 13:33:04,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-07-14 13:33:04,563 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 22 treesize of output 24 [2022-07-14 13:33:04,595 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 25 treesize of output 13 [2022-07-14 13:33:04,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-14 13:33:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 91 trivial. 885 not checked. [2022-07-14 13:33:04,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:33:05,222 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2635 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2635) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_2634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2635 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2635) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2634) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-07-14 13:33:05,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:33:05,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015916660] [2022-07-14 13:33:05,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015916660] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:33:05,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1522697527] [2022-07-14 13:33:05,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:33:05,227 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 13:33:05,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 13:33:05,228 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 13:33:05,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process