./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 12:54:05,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 12:54:05,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 12:54:05,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 12:54:05,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 12:54:05,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 12:54:05,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 12:54:05,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 12:54:05,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 12:54:05,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 12:54:05,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 12:54:05,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 12:54:05,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 12:54:05,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 12:54:05,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 12:54:05,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 12:54:05,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 12:54:05,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 12:54:05,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 12:54:05,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 12:54:05,131 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 12:54:05,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 12:54:05,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 12:54:05,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 12:54:05,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 12:54:05,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 12:54:05,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 12:54:05,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 12:54:05,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 12:54:05,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 12:54:05,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 12:54:05,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 12:54:05,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 12:54:05,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 12:54:05,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 12:54:05,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 12:54:05,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 12:54:05,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 12:54:05,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 12:54:05,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 12:54:05,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 12:54:05,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 12:54:05,149 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-23 12:54:05,171 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 12:54:05,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 12:54:05,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 12:54:05,174 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 12:54:05,175 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 12:54:05,175 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 12:54:05,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 12:54:05,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 12:54:05,175 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 12:54:05,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 12:54:05,176 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 12:54:05,176 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 12:54:05,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 12:54:05,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 12:54:05,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 12:54:05,177 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 12:54:05,177 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 12:54:05,177 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-23 12:54:05,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 12:54:05,178 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 12:54:05,178 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 12:54:05,178 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 12:54:05,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 12:54:05,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 12:54:05,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 12:54:05,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 12:54:05,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 12:54:05,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 12:54:05,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 12:54:05,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 12:54:05,179 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 [2022-07-23 12:54:05,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 12:54:05,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 12:54:05,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 12:54:05,382 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 12:54:05,382 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 12:54:05,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2022-07-23 12:54:05,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b801e1f6/d9b7599a3cba41c8853e1ee10c20da00/FLAG93399ed54 [2022-07-23 12:54:05,839 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 12:54:05,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2022-07-23 12:54:05,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b801e1f6/d9b7599a3cba41c8853e1ee10c20da00/FLAG93399ed54 [2022-07-23 12:54:05,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b801e1f6/d9b7599a3cba41c8853e1ee10c20da00 [2022-07-23 12:54:05,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 12:54:05,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 12:54:05,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 12:54:05,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 12:54:05,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 12:54:05,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 12:54:05" (1/1) ... [2022-07-23 12:54:05,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64074795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:54:05, skipping insertion in model container [2022-07-23 12:54:05,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 12:54:05" (1/1) ... [2022-07-23 12:54:05,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 12:54:05,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 12:54:06,164 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i[33021,33034] [2022-07-23 12:54:06,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 12:54:06,256 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) [2022-07-23 12:54:06,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2ea27321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:54:06, skipping insertion in model container [2022-07-23 12:54:06,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 12:54:06,257 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-23 12:54:06,259 INFO L158 Benchmark]: Toolchain (without parser) took 388.57ms. Allocated memory is still 109.1MB. Free memory was 69.9MB in the beginning and 73.7MB in the end (delta: -3.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-23 12:54:06,259 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 89.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 12:54:06,260 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.82ms. Allocated memory is still 109.1MB. Free memory was 69.7MB in the beginning and 73.7MB in the end (delta: -4.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 12:54:06,261 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 89.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 386.82ms. Allocated memory is still 109.1MB. Free memory was 69.7MB in the beginning and 73.7MB in the end (delta: -4.0MB). 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_OAT_test4-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 12:54:07,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 12:54:07,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 12:54:07,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 12:54:07,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 12:54:07,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 12:54:07,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 12:54:07,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 12:54:07,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 12:54:07,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 12:54:07,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 12:54:07,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 12:54:07,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 12:54:07,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 12:54:07,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 12:54:07,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 12:54:07,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 12:54:07,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 12:54:07,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 12:54:07,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 12:54:07,793 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 12:54:07,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 12:54:07,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 12:54:07,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 12:54:07,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 12:54:07,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 12:54:07,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 12:54:07,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 12:54:07,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 12:54:07,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 12:54:07,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 12:54:07,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 12:54:07,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 12:54:07,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 12:54:07,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 12:54:07,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 12:54:07,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 12:54:07,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 12:54:07,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 12:54:07,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 12:54:07,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 12:54:07,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 12:54:07,811 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-23 12:54:07,834 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 12:54:07,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 12:54:07,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 12:54:07,835 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 12:54:07,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 12:54:07,836 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 12:54:07,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 12:54:07,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 12:54:07,837 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 12:54:07,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 12:54:07,838 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 12:54:07,838 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 12:54:07,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 12:54:07,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 12:54:07,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 12:54:07,838 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 12:54:07,838 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 12:54:07,838 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-23 12:54:07,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 12:54:07,839 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 12:54:07,839 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-23 12:54:07,839 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-23 12:54:07,839 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 12:54:07,839 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 12:54:07,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 12:54:07,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 12:54:07,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 12:54:07,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 12:54:07,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 12:54:07,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 12:54:07,841 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-23 12:54:07,841 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-23 12:54:07,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-23 12:54:07,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 [2022-07-23 12:54:08,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 12:54:08,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 12:54:08,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 12:54:08,147 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 12:54:08,147 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 12:54:08,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2022-07-23 12:54:08,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/854d0bc62/0c620891577d4b27adfe62d9cf37042a/FLAG3f5b7d270 [2022-07-23 12:54:08,698 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 12:54:08,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2022-07-23 12:54:08,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/854d0bc62/0c620891577d4b27adfe62d9cf37042a/FLAG3f5b7d270 [2022-07-23 12:54:09,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/854d0bc62/0c620891577d4b27adfe62d9cf37042a [2022-07-23 12:54:09,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 12:54:09,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 12:54:09,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 12:54:09,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 12:54:09,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 12:54:09,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 12:54:09" (1/1) ... [2022-07-23 12:54:09,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6279ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:54:09, skipping insertion in model container [2022-07-23 12:54:09,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 12:54:09" (1/1) ... [2022-07-23 12:54:09,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 12:54:09,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 12:54:09,499 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i[33021,33034] [2022-07-23 12:54:09,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 12:54:09,640 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-23 12:54:09,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 12:54:09,675 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i[33021,33034] [2022-07-23 12:54:09,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 12:54:09,754 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 12:54:09,773 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i[33021,33034] [2022-07-23 12:54:09,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 12:54:09,850 INFO L208 MainTranslator]: Completed translation [2022-07-23 12:54:09,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:54:09 WrapperNode [2022-07-23 12:54:09,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 12:54:09,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 12:54:09,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 12:54:09,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 12:54:09,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:54:09" (1/1) ... [2022-07-23 12:54:09,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:54:09" (1/1) ... [2022-07-23 12:54:09,967 INFO L137 Inliner]: procedures = 180, calls = 349, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1166 [2022-07-23 12:54:09,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 12:54:09,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 12:54:09,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 12:54:09,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 12:54:09,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:54:09" (1/1) ... [2022-07-23 12:54:09,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:54:09" (1/1) ... [2022-07-23 12:54:09,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:54:09" (1/1) ... [2022-07-23 12:54:09,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:54:09" (1/1) ... [2022-07-23 12:54:10,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:54:09" (1/1) ... [2022-07-23 12:54:10,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:54:09" (1/1) ... [2022-07-23 12:54:10,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:54:09" (1/1) ... [2022-07-23 12:54:10,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 12:54:10,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 12:54:10,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 12:54:10,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 12:54:10,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:54:09" (1/1) ... [2022-07-23 12:54:10,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 12:54:10,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 12:54:10,111 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) [2022-07-23 12:54:10,135 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 [2022-07-23 12:54:10,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-23 12:54:10,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-23 12:54:10,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-23 12:54:10,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-23 12:54:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-23 12:54:10,147 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-23 12:54:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 12:54:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 12:54:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 12:54:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 12:54:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 12:54:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 12:54:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-23 12:54:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-23 12:54:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 12:54:10,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 12:54:10,320 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 12:54:10,322 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 12:54:10,324 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-23 12:54:14,143 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 12:54:14,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 12:54:14,154 INFO L299 CfgBuilder]: Removed 60 assume(true) statements. [2022-07-23 12:54:14,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 12:54:14 BoogieIcfgContainer [2022-07-23 12:54:14,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 12:54:14,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 12:54:14,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 12:54:14,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 12:54:14,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 12:54:09" (1/3) ... [2022-07-23 12:54:14,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f97d664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 12:54:14, skipping insertion in model container [2022-07-23 12:54:14,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:54:09" (2/3) ... [2022-07-23 12:54:14,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f97d664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 12:54:14, skipping insertion in model container [2022-07-23 12:54:14,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 12:54:14" (3/3) ... [2022-07-23 12:54:14,162 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-1.i [2022-07-23 12:54:14,172 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 12:54:14,172 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 648 error locations. [2022-07-23 12:54:14,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 12:54:14,230 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@12dca4b4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@761afeaa [2022-07-23 12:54:14,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 648 error locations. [2022-07-23 12:54:14,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 1274 states, 613 states have (on average 2.257748776508972) internal successors, (1384), 1265 states have internal predecessors, (1384), 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) [2022-07-23 12:54:14,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-23 12:54:14,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:14,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-23 12:54:14,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:14,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:14,245 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2022-07-23 12:54:14,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:14,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208823165] [2022-07-23 12:54:14,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:54:14,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:14,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:14,257 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) [2022-07-23 12:54:14,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-23 12:54:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:54:14,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-23 12:54:14,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:14,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:54:14,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:14,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208823165] [2022-07-23 12:54:14,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208823165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:54:14,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:54:14,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 12:54:14,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965807173] [2022-07-23 12:54:14,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:54:14,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-23 12:54:14,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:14,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-23 12:54:14,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 12:54:14,420 INFO L87 Difference]: Start difference. First operand has 1274 states, 613 states have (on average 2.257748776508972) internal successors, (1384), 1265 states have internal predecessors, (1384), 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) [2022-07-23 12:54:14,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:14,462 INFO L93 Difference]: Finished difference Result 1256 states and 1330 transitions. [2022-07-23 12:54:14,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 12:54:14,464 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 [2022-07-23 12:54:14,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:14,480 INFO L225 Difference]: With dead ends: 1256 [2022-07-23 12:54:14,480 INFO L226 Difference]: Without dead ends: 1254 [2022-07-23 12:54:14,481 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 [2022-07-23 12:54:14,484 INFO L413 NwaCegarLoop]: 1330 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, 1330 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 [2022-07-23 12:54:14,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 12:54:14,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-07-23 12:54:14,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1254. [2022-07-23 12:54:14,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 604 states have (on average 2.1456953642384105) internal successors, (1296), 1245 states have internal predecessors, (1296), 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) [2022-07-23 12:54:14,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1328 transitions. [2022-07-23 12:54:14,560 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1328 transitions. Word has length 5 [2022-07-23 12:54:14,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:14,560 INFO L495 AbstractCegarLoop]: Abstraction has 1254 states and 1328 transitions. [2022-07-23 12:54:14,560 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) [2022-07-23 12:54:14,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1328 transitions. [2022-07-23 12:54:14,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-23 12:54:14,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:14,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-23 12:54:14,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-23 12:54:14,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:14,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:14,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:14,762 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2022-07-23 12:54:14,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:14,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853305964] [2022-07-23 12:54:14,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:54:14,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:14,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:14,765 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) [2022-07-23 12:54:14,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-23 12:54:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:54:14,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 12:54:14,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:14,944 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 [2022-07-23 12:54:14,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:14,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:54:14,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:14,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853305964] [2022-07-23 12:54:14,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853305964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:54:14,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:54:14,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 12:54:14,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029847398] [2022-07-23 12:54:14,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:54:14,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 12:54:14,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:14,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 12:54:14,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 12:54:14,968 INFO L87 Difference]: Start difference. First operand 1254 states and 1328 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) [2022-07-23 12:54:16,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:16,729 INFO L93 Difference]: Finished difference Result 1291 states and 1378 transitions. [2022-07-23 12:54:16,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 12:54:16,729 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 [2022-07-23 12:54:16,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:16,733 INFO L225 Difference]: With dead ends: 1291 [2022-07-23 12:54:16,733 INFO L226 Difference]: Without dead ends: 1291 [2022-07-23 12:54:16,733 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 [2022-07-23 12:54:16,734 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 1159 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-23 12:54:16,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 704 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-23 12:54:16,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2022-07-23 12:54:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1237. [2022-07-23 12:54:16,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 680 states have (on average 1.9676470588235293) internal successors, (1338), 1228 states have internal predecessors, (1338), 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) [2022-07-23 12:54:16,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1370 transitions. [2022-07-23 12:54:16,752 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1370 transitions. Word has length 5 [2022-07-23 12:54:16,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:16,753 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 1370 transitions. [2022-07-23 12:54:16,753 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) [2022-07-23 12:54:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1370 transitions. [2022-07-23 12:54:16,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-23 12:54:16,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:16,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-23 12:54:16,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-23 12:54:16,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:16,957 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:16,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:16,957 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2022-07-23 12:54:16,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:16,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702289254] [2022-07-23 12:54:16,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:54:16,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:16,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:16,959 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) [2022-07-23 12:54:16,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-23 12:54:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:54:17,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 12:54:17,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:17,057 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 [2022-07-23 12:54:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:17,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:54:17,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:17,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702289254] [2022-07-23 12:54:17,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702289254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:54:17,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:54:17,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 12:54:17,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810214777] [2022-07-23 12:54:17,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:54:17,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 12:54:17,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:17,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 12:54:17,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 12:54:17,075 INFO L87 Difference]: Start difference. First operand 1237 states and 1370 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) [2022-07-23 12:54:19,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:19,287 INFO L93 Difference]: Finished difference Result 1540 states and 1693 transitions. [2022-07-23 12:54:19,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 12:54:19,287 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 [2022-07-23 12:54:19,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:19,291 INFO L225 Difference]: With dead ends: 1540 [2022-07-23 12:54:19,292 INFO L226 Difference]: Without dead ends: 1540 [2022-07-23 12:54:19,292 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 [2022-07-23 12:54:19,293 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 504 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-23 12:54:19,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1483 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-23 12:54:19,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2022-07-23 12:54:19,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1393. [2022-07-23 12:54:19,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 846 states have (on average 1.9432624113475176) internal successors, (1644), 1384 states have internal predecessors, (1644), 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) [2022-07-23 12:54:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1676 transitions. [2022-07-23 12:54:19,314 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1676 transitions. Word has length 5 [2022-07-23 12:54:19,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:19,315 INFO L495 AbstractCegarLoop]: Abstraction has 1393 states and 1676 transitions. [2022-07-23 12:54:19,315 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) [2022-07-23 12:54:19,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1676 transitions. [2022-07-23 12:54:19,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-23 12:54:19,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:19,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-23 12:54:19,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-23 12:54:19,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:19,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:19,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:19,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2022-07-23 12:54:19,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:19,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207217242] [2022-07-23 12:54:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:54:19,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:19,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:19,525 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) [2022-07-23 12:54:19,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-23 12:54:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:54:19,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 12:54:19,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:19,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:54:19,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:19,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207217242] [2022-07-23 12:54:19,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207217242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:54:19,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:54:19,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 12:54:19,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294659953] [2022-07-23 12:54:19,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:54:19,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 12:54:19,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:19,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 12:54:19,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 12:54:19,622 INFO L87 Difference]: Start difference. First operand 1393 states and 1676 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) [2022-07-23 12:54:19,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:19,706 INFO L93 Difference]: Finished difference Result 2737 states and 3283 transitions. [2022-07-23 12:54:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 12:54:19,710 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 [2022-07-23 12:54:19,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:19,720 INFO L225 Difference]: With dead ends: 2737 [2022-07-23 12:54:19,720 INFO L226 Difference]: Without dead ends: 2737 [2022-07-23 12:54:19,720 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 [2022-07-23 12:54:19,723 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 1143 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 2894 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 [2022-07-23 12:54:19,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 2894 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 12:54:19,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2022-07-23 12:54:19,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 1394. [2022-07-23 12:54:19,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 847 states have (on average 1.9421487603305785) internal successors, (1645), 1385 states have internal predecessors, (1645), 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) [2022-07-23 12:54:19,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1677 transitions. [2022-07-23 12:54:19,765 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1677 transitions. Word has length 6 [2022-07-23 12:54:19,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:19,767 INFO L495 AbstractCegarLoop]: Abstraction has 1394 states and 1677 transitions. [2022-07-23 12:54:19,768 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) [2022-07-23 12:54:19,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1677 transitions. [2022-07-23 12:54:19,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-23 12:54:19,769 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:19,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:54:19,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-23 12:54:19,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:19,975 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:19,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:19,976 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2022-07-23 12:54:19,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:19,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834289931] [2022-07-23 12:54:19,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:54:19,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:19,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:19,982 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) [2022-07-23 12:54:19,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-23 12:54:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:54:20,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 12:54:20,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:20,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:54:20,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:20,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834289931] [2022-07-23 12:54:20,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834289931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:54:20,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:54:20,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 12:54:20,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074935382] [2022-07-23 12:54:20,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:54:20,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 12:54:20,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:20,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 12:54:20,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 12:54:20,090 INFO L87 Difference]: Start difference. First operand 1394 states and 1677 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) [2022-07-23 12:54:20,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:20,118 INFO L93 Difference]: Finished difference Result 1358 states and 1640 transitions. [2022-07-23 12:54:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 12:54:20,119 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 [2022-07-23 12:54:20,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:20,123 INFO L225 Difference]: With dead ends: 1358 [2022-07-23 12:54:20,123 INFO L226 Difference]: Without dead ends: 1358 [2022-07-23 12:54:20,124 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 [2022-07-23 12:54:20,124 INFO L413 NwaCegarLoop]: 1177 mSDtfsCounter, 1137 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1210 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 [2022-07-23 12:54:20,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1153 Valid, 1210 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 12:54:20,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2022-07-23 12:54:20,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1352. [2022-07-23 12:54:20,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 829 states have (on average 1.9324487334137515) internal successors, (1602), 1343 states have internal predecessors, (1602), 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) [2022-07-23 12:54:20,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1634 transitions. [2022-07-23 12:54:20,147 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1634 transitions. Word has length 11 [2022-07-23 12:54:20,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:20,148 INFO L495 AbstractCegarLoop]: Abstraction has 1352 states and 1634 transitions. [2022-07-23 12:54:20,148 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) [2022-07-23 12:54:20,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1634 transitions. [2022-07-23 12:54:20,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-23 12:54:20,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:20,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:54:20,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-23 12:54:20,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:20,358 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:20,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:20,359 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2022-07-23 12:54:20,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:20,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017874448] [2022-07-23 12:54:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:54:20,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:20,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:20,361 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) [2022-07-23 12:54:20,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-23 12:54:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:54:20,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 12:54:20,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:20,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:54:20,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:20,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017874448] [2022-07-23 12:54:20,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017874448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:54:20,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:54:20,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 12:54:20,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245034035] [2022-07-23 12:54:20,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:54:20,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 12:54:20,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:20,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 12:54:20,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 12:54:20,493 INFO L87 Difference]: Start difference. First operand 1352 states and 1634 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) [2022-07-23 12:54:20,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:20,553 INFO L93 Difference]: Finished difference Result 1337 states and 1612 transitions. [2022-07-23 12:54:20,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 12:54:20,554 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 [2022-07-23 12:54:20,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:20,561 INFO L225 Difference]: With dead ends: 1337 [2022-07-23 12:54:20,561 INFO L226 Difference]: Without dead ends: 1337 [2022-07-23 12:54:20,561 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 [2022-07-23 12:54:20,562 INFO L413 NwaCegarLoop]: 1132 mSDtfsCounter, 1108 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 2290 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 [2022-07-23 12:54:20,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 2290 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 12:54:20,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2022-07-23 12:54:20,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1330. [2022-07-23 12:54:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 821 states have (on average 1.9159561510353227) internal successors, (1573), 1321 states have internal predecessors, (1573), 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) [2022-07-23 12:54:20,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1605 transitions. [2022-07-23 12:54:20,584 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1605 transitions. Word has length 13 [2022-07-23 12:54:20,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:20,584 INFO L495 AbstractCegarLoop]: Abstraction has 1330 states and 1605 transitions. [2022-07-23 12:54:20,584 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) [2022-07-23 12:54:20,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1605 transitions. [2022-07-23 12:54:20,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-23 12:54:20,585 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:20,585 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] [2022-07-23 12:54:20,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-23 12:54:20,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:20,794 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:20,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:20,795 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2022-07-23 12:54:20,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:20,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974439731] [2022-07-23 12:54:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:54:20,795 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:20,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:20,796 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) [2022-07-23 12:54:20,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-23 12:54:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:54:20,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 12:54:20,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:20,922 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 [2022-07-23 12:54:20,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:20,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:54:20,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:20,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974439731] [2022-07-23 12:54:20,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974439731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:54:20,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:54:20,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 12:54:20,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325362016] [2022-07-23 12:54:20,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:54:20,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 12:54:20,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:20,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 12:54:20,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 12:54:20,978 INFO L87 Difference]: Start difference. First operand 1330 states and 1605 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) [2022-07-23 12:54:23,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:23,302 INFO L93 Difference]: Finished difference Result 1791 states and 2054 transitions. [2022-07-23 12:54:23,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 12:54:23,302 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 [2022-07-23 12:54:23,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:23,312 INFO L225 Difference]: With dead ends: 1791 [2022-07-23 12:54:23,313 INFO L226 Difference]: Without dead ends: 1791 [2022-07-23 12:54:23,313 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 [2022-07-23 12:54:23,314 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 2394 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2407 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-23 12:54:23,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2407 Valid, 1007 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-23 12:54:23,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2022-07-23 12:54:23,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1326. [2022-07-23 12:54:23,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 821 states have (on average 1.9110840438489647) internal successors, (1569), 1317 states have internal predecessors, (1569), 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) [2022-07-23 12:54:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1601 transitions. [2022-07-23 12:54:23,342 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1601 transitions. Word has length 27 [2022-07-23 12:54:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:23,342 INFO L495 AbstractCegarLoop]: Abstraction has 1326 states and 1601 transitions. [2022-07-23 12:54:23,342 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) [2022-07-23 12:54:23,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1601 transitions. [2022-07-23 12:54:23,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-23 12:54:23,343 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:23,343 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] [2022-07-23 12:54:23,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-23 12:54:23,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:23,551 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:23,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:23,551 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2022-07-23 12:54:23,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:23,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233045516] [2022-07-23 12:54:23,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:54:23,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:23,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:23,553 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) [2022-07-23 12:54:23,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-23 12:54:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:54:23,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 12:54:23,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:23,683 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 [2022-07-23 12:54:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:23,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:54:23,778 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:23,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233045516] [2022-07-23 12:54:23,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233045516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:54:23,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:54:23,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 12:54:23,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859809339] [2022-07-23 12:54:23,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:54:23,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 12:54:23,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:23,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 12:54:23,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 12:54:23,779 INFO L87 Difference]: Start difference. First operand 1326 states and 1601 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) [2022-07-23 12:54:26,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:26,324 INFO L93 Difference]: Finished difference Result 1510 states and 1675 transitions. [2022-07-23 12:54:26,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 12:54:26,325 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 [2022-07-23 12:54:26,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:26,329 INFO L225 Difference]: With dead ends: 1510 [2022-07-23 12:54:26,329 INFO L226 Difference]: Without dead ends: 1510 [2022-07-23 12:54:26,329 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 [2022-07-23 12:54:26,329 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 851 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-23 12:54:26,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1923 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-23 12:54:26,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2022-07-23 12:54:26,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1322. [2022-07-23 12:54:26,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 821 states have (on average 1.9062119366626067) internal successors, (1565), 1313 states have internal predecessors, (1565), 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) [2022-07-23 12:54:26,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1597 transitions. [2022-07-23 12:54:26,347 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1597 transitions. Word has length 27 [2022-07-23 12:54:26,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:26,347 INFO L495 AbstractCegarLoop]: Abstraction has 1322 states and 1597 transitions. [2022-07-23 12:54:26,347 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) [2022-07-23 12:54:26,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1597 transitions. [2022-07-23 12:54:26,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-23 12:54:26,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:26,348 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] [2022-07-23 12:54:26,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-23 12:54:26,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:26,556 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:26,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:26,557 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2022-07-23 12:54:26,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:26,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427833962] [2022-07-23 12:54:26,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:54:26,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:26,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:26,559 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) [2022-07-23 12:54:26,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-23 12:54:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:54:26,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 12:54:26,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:26,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:54:26,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:26,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427833962] [2022-07-23 12:54:26,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427833962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:54:26,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:54:26,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 12:54:26,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411650426] [2022-07-23 12:54:26,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:54:26,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 12:54:26,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:26,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 12:54:26,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 12:54:26,740 INFO L87 Difference]: Start difference. First operand 1322 states and 1597 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) [2022-07-23 12:54:26,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:26,788 INFO L93 Difference]: Finished difference Result 1322 states and 1593 transitions. [2022-07-23 12:54:26,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 12:54:26,788 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 [2022-07-23 12:54:26,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:26,792 INFO L225 Difference]: With dead ends: 1322 [2022-07-23 12:54:26,792 INFO L226 Difference]: Without dead ends: 1322 [2022-07-23 12:54:26,792 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 [2022-07-23 12:54:26,793 INFO L413 NwaCegarLoop]: 1126 mSDtfsCounter, 1084 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 2268 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 [2022-07-23 12:54:26,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 2268 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 12:54:26,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2022-07-23 12:54:26,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1316. [2022-07-23 12:54:26,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 815 states have (on average 1.9079754601226995) internal successors, (1555), 1307 states have internal predecessors, (1555), 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) [2022-07-23 12:54:26,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1587 transitions. [2022-07-23 12:54:26,809 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1587 transitions. Word has length 42 [2022-07-23 12:54:26,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:26,810 INFO L495 AbstractCegarLoop]: Abstraction has 1316 states and 1587 transitions. [2022-07-23 12:54:26,810 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) [2022-07-23 12:54:26,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1587 transitions. [2022-07-23 12:54:26,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-23 12:54:26,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:26,811 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] [2022-07-23 12:54:26,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-23 12:54:27,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:27,020 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:27,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:27,020 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2022-07-23 12:54:27,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:27,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594803433] [2022-07-23 12:54:27,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:54:27,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:27,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:27,022 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) [2022-07-23 12:54:27,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-23 12:54:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:54:27,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 12:54:27,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:27,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:54:27,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:27,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594803433] [2022-07-23 12:54:27,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594803433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:54:27,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:54:27,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 12:54:27,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347770818] [2022-07-23 12:54:27,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:54:27,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 12:54:27,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:27,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 12:54:27,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 12:54:27,343 INFO L87 Difference]: Start difference. First operand 1316 states and 1587 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) [2022-07-23 12:54:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:27,391 INFO L93 Difference]: Finished difference Result 1362 states and 1633 transitions. [2022-07-23 12:54:27,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 12:54:27,392 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 [2022-07-23 12:54:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:27,396 INFO L225 Difference]: With dead ends: 1362 [2022-07-23 12:54:27,396 INFO L226 Difference]: Without dead ends: 1362 [2022-07-23 12:54:27,396 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 [2022-07-23 12:54:27,397 INFO L413 NwaCegarLoop]: 1134 mSDtfsCounter, 67 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 12:54:27,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 2173 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 12:54:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-07-23 12:54:27,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1362. [2022-07-23 12:54:27,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 861 states have (on average 1.859465737514518) internal successors, (1601), 1353 states have internal predecessors, (1601), 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) [2022-07-23 12:54:27,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1633 transitions. [2022-07-23 12:54:27,414 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1633 transitions. Word has length 50 [2022-07-23 12:54:27,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:27,415 INFO L495 AbstractCegarLoop]: Abstraction has 1362 states and 1633 transitions. [2022-07-23 12:54:27,415 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) [2022-07-23 12:54:27,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1633 transitions. [2022-07-23 12:54:27,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-23 12:54:27,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:27,416 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] [2022-07-23 12:54:27,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-07-23 12:54:27,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:27,625 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:27,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:27,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2022-07-23 12:54:27,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:27,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737296000] [2022-07-23 12:54:27,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:54:27,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:27,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:27,627 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) [2022-07-23 12:54:27,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-23 12:54:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:54:27,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 12:54:27,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:27,915 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 [2022-07-23 12:54:27,919 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 [2022-07-23 12:54:28,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 12:54:28,200 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 [2022-07-23 12:54:28,209 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 12:54:28,209 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 [2022-07-23 12:54:28,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:28,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:54:28,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:28,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737296000] [2022-07-23 12:54:28,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737296000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:54:28,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:54:28,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 12:54:28,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155974388] [2022-07-23 12:54:28,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:54:28,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 12:54:28,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:28,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 12:54:28,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 12:54:28,223 INFO L87 Difference]: Start difference. First operand 1362 states and 1633 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) [2022-07-23 12:54:29,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:29,921 INFO L93 Difference]: Finished difference Result 1331 states and 1556 transitions. [2022-07-23 12:54:29,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 12:54:29,921 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 [2022-07-23 12:54:29,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:29,925 INFO L225 Difference]: With dead ends: 1331 [2022-07-23 12:54:29,925 INFO L226 Difference]: Without dead ends: 1331 [2022-07-23 12:54:29,925 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 [2022-07-23 12:54:29,925 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 2001 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-23 12:54:29,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2007 Valid, 477 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-23 12:54:29,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2022-07-23 12:54:29,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1112. [2022-07-23 12:54:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 695 states have (on average 1.7266187050359711) internal successors, (1200), 1103 states have internal predecessors, (1200), 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) [2022-07-23 12:54:29,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1232 transitions. [2022-07-23 12:54:29,942 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1232 transitions. Word has length 53 [2022-07-23 12:54:29,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:29,942 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 1232 transitions. [2022-07-23 12:54:29,943 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) [2022-07-23 12:54:29,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1232 transitions. [2022-07-23 12:54:29,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-23 12:54:29,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:29,945 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] [2022-07-23 12:54:29,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-07-23 12:54:30,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:30,155 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:30,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:30,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2022-07-23 12:54:30,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:30,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733062576] [2022-07-23 12:54:30,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:54:30,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:30,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:30,158 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) [2022-07-23 12:54:30,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-23 12:54:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:54:30,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 12:54:30,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:30,359 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 [2022-07-23 12:54:30,367 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 [2022-07-23 12:54:30,383 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 [2022-07-23 12:54:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:30,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:54:30,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:30,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733062576] [2022-07-23 12:54:30,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733062576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:54:30,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:54:30,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 12:54:30,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810023509] [2022-07-23 12:54:30,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:54:30,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 12:54:30,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:30,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 12:54:30,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 12:54:30,393 INFO L87 Difference]: Start difference. First operand 1112 states and 1232 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) [2022-07-23 12:54:32,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:32,463 INFO L93 Difference]: Finished difference Result 1111 states and 1231 transitions. [2022-07-23 12:54:32,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 12:54:32,464 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 [2022-07-23 12:54:32,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:32,466 INFO L225 Difference]: With dead ends: 1111 [2022-07-23 12:54:32,467 INFO L226 Difference]: Without dead ends: 1111 [2022-07-23 12:54:32,467 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 [2022-07-23 12:54:32,467 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 4 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-23 12:54:32,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2649 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-23 12:54:32,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2022-07-23 12:54:32,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1111. [2022-07-23 12:54:32,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 695 states have (on average 1.725179856115108) internal successors, (1199), 1102 states have internal predecessors, (1199), 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) [2022-07-23 12:54:32,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1231 transitions. [2022-07-23 12:54:32,480 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1231 transitions. Word has length 58 [2022-07-23 12:54:32,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:32,480 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1231 transitions. [2022-07-23 12:54:32,481 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) [2022-07-23 12:54:32,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1231 transitions. [2022-07-23 12:54:32,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-23 12:54:32,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:32,481 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] [2022-07-23 12:54:32,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-23 12:54:32,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:32,691 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:32,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2022-07-23 12:54:32,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:32,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349041335] [2022-07-23 12:54:32,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:54:32,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:32,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:32,694 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) [2022-07-23 12:54:32,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-23 12:54:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:54:32,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-23 12:54:32,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:32,912 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 [2022-07-23 12:54:32,931 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 [2022-07-23 12:54:32,938 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 [2022-07-23 12:54:32,979 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 [2022-07-23 12:54:32,983 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 [2022-07-23 12:54:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:32,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:54:32,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:32,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349041335] [2022-07-23 12:54:32,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349041335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:54:32,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:54:32,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 12:54:32,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985853945] [2022-07-23 12:54:32,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:54:32,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 12:54:32,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:32,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 12:54:32,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 12:54:32,996 INFO L87 Difference]: Start difference. First operand 1111 states and 1231 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) [2022-07-23 12:54:35,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:35,419 INFO L93 Difference]: Finished difference Result 1110 states and 1230 transitions. [2022-07-23 12:54:35,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 12:54:35,419 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 [2022-07-23 12:54:35,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:35,422 INFO L225 Difference]: With dead ends: 1110 [2022-07-23 12:54:35,422 INFO L226 Difference]: Without dead ends: 1110 [2022-07-23 12:54:35,422 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 [2022-07-23 12:54:35,422 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 2 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-23 12:54:35,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2672 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-23 12:54:35,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2022-07-23 12:54:35,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2022-07-23 12:54:35,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 694 states have (on average 1.7262247838616716) internal successors, (1198), 1101 states have internal predecessors, (1198), 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) [2022-07-23 12:54:35,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1230 transitions. [2022-07-23 12:54:35,433 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1230 transitions. Word has length 58 [2022-07-23 12:54:35,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:35,433 INFO L495 AbstractCegarLoop]: Abstraction has 1110 states and 1230 transitions. [2022-07-23 12:54:35,433 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) [2022-07-23 12:54:35,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1230 transitions. [2022-07-23 12:54:35,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-23 12:54:35,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:35,434 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] [2022-07-23 12:54:35,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-23 12:54:35,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:35,643 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:35,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:35,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2041767774, now seen corresponding path program 1 times [2022-07-23 12:54:35,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:35,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059438327] [2022-07-23 12:54:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:54:35,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:35,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:35,646 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) [2022-07-23 12:54:35,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-23 12:54:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:54:35,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 12:54:35,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:35,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:35,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:54:35,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:35,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059438327] [2022-07-23 12:54:35,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059438327] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:54:35,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:54:35,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 12:54:35,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088597161] [2022-07-23 12:54:35,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:54:35,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 12:54:35,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:35,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 12:54:35,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 12:54:35,860 INFO L87 Difference]: Start difference. First operand 1110 states and 1230 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) [2022-07-23 12:54:35,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:35,899 INFO L93 Difference]: Finished difference Result 1113 states and 1235 transitions. [2022-07-23 12:54:35,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 12:54:35,899 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 [2022-07-23 12:54:35,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:35,904 INFO L225 Difference]: With dead ends: 1113 [2022-07-23 12:54:35,904 INFO L226 Difference]: Without dead ends: 1113 [2022-07-23 12:54:35,904 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 [2022-07-23 12:54:35,905 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 2 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3127 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 [2022-07-23 12:54:35,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3127 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 12:54:35,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2022-07-23 12:54:35,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1113. [2022-07-23 12:54:35,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 696 states have (on average 1.7255747126436782) internal successors, (1201), 1104 states have internal predecessors, (1201), 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) [2022-07-23 12:54:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1235 transitions. [2022-07-23 12:54:35,919 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1235 transitions. Word has length 66 [2022-07-23 12:54:35,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:35,919 INFO L495 AbstractCegarLoop]: Abstraction has 1113 states and 1235 transitions. [2022-07-23 12:54:35,920 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) [2022-07-23 12:54:35,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1235 transitions. [2022-07-23 12:54:35,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-23 12:54:35,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:35,920 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] [2022-07-23 12:54:35,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-23 12:54:36,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:36,131 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:36,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:36,132 INFO L85 PathProgramCache]: Analyzing trace with hash -326306715, now seen corresponding path program 1 times [2022-07-23 12:54:36,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:36,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120167950] [2022-07-23 12:54:36,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:54:36,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:36,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:36,134 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) [2022-07-23 12:54:36,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-23 12:54:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:54:36,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 12:54:36,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:36,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 12:54:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:36,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:36,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120167950] [2022-07-23 12:54:36,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120167950] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 12:54:36,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 12:54:36,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-23 12:54:36,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644183846] [2022-07-23 12:54:36,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 12:54:36,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 12:54:36,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:36,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 12:54:36,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-23 12:54:36,435 INFO L87 Difference]: Start difference. First operand 1113 states and 1235 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) [2022-07-23 12:54:36,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:36,601 INFO L93 Difference]: Finished difference Result 1125 states and 1253 transitions. [2022-07-23 12:54:36,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 12:54:36,601 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 [2022-07-23 12:54:36,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:36,604 INFO L225 Difference]: With dead ends: 1125 [2022-07-23 12:54:36,604 INFO L226 Difference]: Without dead ends: 1125 [2022-07-23 12:54:36,604 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 [2022-07-23 12:54:36,605 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 23 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3129 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 12:54:36,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3129 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 12:54:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2022-07-23 12:54:36,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1123. [2022-07-23 12:54:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 705 states have (on average 1.724822695035461) internal successors, (1216), 1113 states have internal predecessors, (1216), 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) [2022-07-23 12:54:36,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1250 transitions. [2022-07-23 12:54:36,622 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1250 transitions. Word has length 67 [2022-07-23 12:54:36,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:36,622 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1250 transitions. [2022-07-23 12:54:36,623 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) [2022-07-23 12:54:36,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1250 transitions. [2022-07-23 12:54:36,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-23 12:54:36,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:36,624 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] [2022-07-23 12:54:36,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-23 12:54:36,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:36,837 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:36,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:36,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1716613406, now seen corresponding path program 2 times [2022-07-23 12:54:36,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:36,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064289837] [2022-07-23 12:54:36,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 12:54:36,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:36,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:36,839 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) [2022-07-23 12:54:36,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-23 12:54:37,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 12:54:37,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 12:54:37,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 12:54:37,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:37,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 12:54:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:37,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:37,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064289837] [2022-07-23 12:54:37,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064289837] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 12:54:37,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 12:54:37,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-23 12:54:37,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848166470] [2022-07-23 12:54:37,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 12:54:37,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-23 12:54:37,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:37,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-23 12:54:37,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-23 12:54:37,363 INFO L87 Difference]: Start difference. First operand 1123 states and 1250 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) [2022-07-23 12:54:37,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:37,912 INFO L93 Difference]: Finished difference Result 1144 states and 1282 transitions. [2022-07-23 12:54:37,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-23 12:54:37,913 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 [2022-07-23 12:54:37,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:37,916 INFO L225 Difference]: With dead ends: 1144 [2022-07-23 12:54:37,916 INFO L226 Difference]: Without dead ends: 1140 [2022-07-23 12:54:37,916 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 [2022-07-23 12:54:37,917 INFO L413 NwaCegarLoop]: 1048 mSDtfsCounter, 73 mSDsluCounter, 6256 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 7304 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 12:54:37,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 7304 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 12:54:37,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-07-23 12:54:37,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1132. [2022-07-23 12:54:37,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 714 states have (on average 1.719887955182073) internal successors, (1228), 1122 states have internal predecessors, (1228), 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) [2022-07-23 12:54:37,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1262 transitions. [2022-07-23 12:54:37,930 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1262 transitions. Word has length 70 [2022-07-23 12:54:37,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:37,930 INFO L495 AbstractCegarLoop]: Abstraction has 1132 states and 1262 transitions. [2022-07-23 12:54:37,930 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) [2022-07-23 12:54:37,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1262 transitions. [2022-07-23 12:54:37,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-23 12:54:37,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:37,931 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] [2022-07-23 12:54:37,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-07-23 12:54:38,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:38,142 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:38,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:38,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1956109246, now seen corresponding path program 3 times [2022-07-23 12:54:38,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:38,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359642437] [2022-07-23 12:54:38,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 12:54:38,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:38,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:38,145 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) [2022-07-23 12:54:38,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-23 12:54:38,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-23 12:54:38,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 12:54:38,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-23 12:54:38,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:38,834 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:38,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 12:54:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:39,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:39,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359642437] [2022-07-23 12:54:39,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359642437] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 12:54:39,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 12:54:39,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-23 12:54:39,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998499808] [2022-07-23 12:54:39,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 12:54:39,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-23 12:54:39,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:39,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-23 12:54:39,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-07-23 12:54:39,351 INFO L87 Difference]: Start difference. First operand 1132 states and 1262 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) [2022-07-23 12:54:42,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:42,036 INFO L93 Difference]: Finished difference Result 1174 states and 1338 transitions. [2022-07-23 12:54:42,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-23 12:54:42,037 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 [2022-07-23 12:54:42,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:42,040 INFO L225 Difference]: With dead ends: 1174 [2022-07-23 12:54:42,040 INFO L226 Difference]: Without dead ends: 1168 [2022-07-23 12:54:42,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2022-07-23 12:54:42,041 INFO L413 NwaCegarLoop]: 1052 mSDtfsCounter, 147 mSDsluCounter, 11516 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 12568 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-23 12:54:42,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 12568 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-23 12:54:42,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-07-23 12:54:42,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1150. [2022-07-23 12:54:42,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 732 states have (on average 1.709016393442623) internal successors, (1251), 1140 states have internal predecessors, (1251), 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) [2022-07-23 12:54:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1285 transitions. [2022-07-23 12:54:42,056 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1285 transitions. Word has length 76 [2022-07-23 12:54:42,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:42,056 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1285 transitions. [2022-07-23 12:54:42,056 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) [2022-07-23 12:54:42,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1285 transitions. [2022-07-23 12:54:42,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-23 12:54:42,057 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:42,057 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] [2022-07-23 12:54:42,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-23 12:54:42,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:42,269 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:42,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1029224194, now seen corresponding path program 4 times [2022-07-23 12:54:42,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:42,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655357152] [2022-07-23 12:54:42,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 12:54:42,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:42,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:42,271 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) [2022-07-23 12:54:42,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-23 12:54:42,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 12:54:42,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 12:54:42,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-23 12:54:42,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:42,886 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:42,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 12:54:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:54:44,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:44,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655357152] [2022-07-23 12:54:44,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655357152] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 12:54:44,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 12:54:44,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-07-23 12:54:44,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630342167] [2022-07-23 12:54:44,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 12:54:44,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-23 12:54:44,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:54:44,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-23 12:54:44,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2022-07-23 12:54:44,167 INFO L87 Difference]: Start difference. First operand 1150 states and 1285 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) [2022-07-23 12:54:54,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:54:54,480 INFO L93 Difference]: Finished difference Result 1230 states and 1418 transitions. [2022-07-23 12:54:54,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-07-23 12:54:54,480 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 [2022-07-23 12:54:54,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:54:54,484 INFO L225 Difference]: With dead ends: 1230 [2022-07-23 12:54:54,484 INFO L226 Difference]: Without dead ends: 1226 [2022-07-23 12:54:54,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2022-07-23 12:54:54,486 INFO L413 NwaCegarLoop]: 1065 mSDtfsCounter, 442 mSDsluCounter, 26459 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 27524 SdHoareTripleChecker+Invalid, 3575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-23 12:54:54,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 27524 Invalid, 3575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 3101 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-23 12:54:54,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2022-07-23 12:54:54,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1184. [2022-07-23 12:54:54,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 766 states have (on average 1.6932114882506528) internal successors, (1297), 1174 states have internal predecessors, (1297), 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) [2022-07-23 12:54:54,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1331 transitions. [2022-07-23 12:54:54,509 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1331 transitions. Word has length 88 [2022-07-23 12:54:54,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:54:54,509 INFO L495 AbstractCegarLoop]: Abstraction has 1184 states and 1331 transitions. [2022-07-23 12:54:54,509 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) [2022-07-23 12:54:54,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1331 transitions. [2022-07-23 12:54:54,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-23 12:54:54,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:54:54,510 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] [2022-07-23 12:54:54,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-23 12:54:54,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:54:54,731 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:54:54,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:54:54,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1185723038, now seen corresponding path program 5 times [2022-07-23 12:54:54,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:54:54,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848309679] [2022-07-23 12:54:54,732 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 12:54:54,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:54:54,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:54:54,733 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) [2022-07-23 12:54:54,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-23 12:54:55,948 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-07-23 12:54:55,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 12:54:55,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 59 conjunts are in the unsatisfiable core [2022-07-23 12:54:55,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:54:56,009 INFO L356 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-07-23 12:54:56,009 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 [2022-07-23 12:54:56,229 INFO L356 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2022-07-23 12:54:56,230 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 [2022-07-23 12:54:56,281 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 [2022-07-23 12:54:56,388 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 43 treesize of output 25 [2022-07-23 12:54:56,501 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_11)) (_ bv1 1))))) (exists ((v_ArrVal_1562 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1562) |c_#memory_$Pointer$.base|))) is different from true [2022-07-23 12:54:56,524 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_11)) (_ bv1 1))))) (exists ((v_ArrVal_1563 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1563)))) is different from true [2022-07-23 12:54:56,935 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_11)) (_ bv1 1))))) (exists ((v_ArrVal_1578 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1578)))) is different from true [2022-07-23 12:54:57,671 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 12:54:57,672 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 55 treesize of output 54 [2022-07-23 12:54:57,715 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 52 treesize of output 28 [2022-07-23 12:54:57,772 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 820 trivial. 129 not checked. [2022-07-23 12:54:57,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 12:54:58,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:54:58,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848309679] [2022-07-23 12:54:58,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848309679] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 12:54:58,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1704294048] [2022-07-23 12:54:58,007 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 12:54:58,007 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-23 12:54:58,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-23 12:54:58,008 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) [2022-07-23 12:54:58,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-07-23 12:56:24,018 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-07-23 12:56:24,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 12:56:24,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-23 12:56:24,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:56:24,282 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-23 12:56:24,282 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 [2022-07-23 12:56:24,427 INFO L356 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2022-07-23 12:56:24,427 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 [2022-07-23 12:56:24,462 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 [2022-07-23 12:56:24,593 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 [2022-07-23 12:56:26,592 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 12:56:26,592 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 [2022-07-23 12:56:26,645 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 [2022-07-23 12:56:26,683 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2022-07-23 12:56:26,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 12:56:26,847 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 [2022-07-23 12:56:26,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1704294048] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 12:56:26,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 12:56:26,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 19 [2022-07-23 12:56:26,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639649311] [2022-07-23 12:56:26,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 12:56:26,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-23 12:56:26,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:56:26,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-23 12:56:26,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=336, Unknown=30, NotChecked=164, Total=600 [2022-07-23 12:56:26,850 INFO L87 Difference]: Start difference. First operand 1184 states and 1331 transitions. Second operand has 21 states, 18 states have (on average 7.555555555555555) internal successors, (136), 20 states have internal predecessors, (136), 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) [2022-07-23 12:56:34,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:56:34,024 INFO L93 Difference]: Finished difference Result 2117 states and 2327 transitions. [2022-07-23 12:56:34,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-23 12:56:34,024 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 7.555555555555555) internal successors, (136), 20 states have internal predecessors, (136), 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 [2022-07-23 12:56:34,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:56:34,029 INFO L225 Difference]: With dead ends: 2117 [2022-07-23 12:56:34,029 INFO L226 Difference]: Without dead ends: 2113 [2022-07-23 12:56:34,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 120 SyntacticMatches, 87 SemanticMatches, 35 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=187, Invalid=832, Unknown=53, NotChecked=260, Total=1332 [2022-07-23 12:56:34,030 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 1838 mSDsluCounter, 6493 mSDsCounter, 0 mSdLazyCounter, 5624 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 7105 SdHoareTripleChecker+Invalid, 12449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 5624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6772 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-23 12:56:34,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1853 Valid, 7105 Invalid, 12449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 5624 Invalid, 0 Unknown, 6772 Unchecked, 6.6s Time] [2022-07-23 12:56:34,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2022-07-23 12:56:34,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 1546. [2022-07-23 12:56:34,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1546 states, 1126 states have (on average 1.6580817051509769) internal successors, (1867), 1531 states have internal predecessors, (1867), 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) [2022-07-23 12:56:34,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 1909 transitions. [2022-07-23 12:56:34,051 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 1909 transitions. Word has length 110 [2022-07-23 12:56:34,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:56:34,051 INFO L495 AbstractCegarLoop]: Abstraction has 1546 states and 1909 transitions. [2022-07-23 12:56:34,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 7.555555555555555) internal successors, (136), 20 states have internal predecessors, (136), 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) [2022-07-23 12:56:34,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 1909 transitions. [2022-07-23 12:56:34,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-23 12:56:34,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:56:34,052 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] [2022-07-23 12:56:34,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-23 12:56:34,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-07-23 12:56:34,468 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 [2022-07-23 12:56:34,468 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-07-23 12:56:34,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:56:34,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1185723039, now seen corresponding path program 1 times [2022-07-23 12:56:34,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:56:34,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435902706] [2022-07-23 12:56:34,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:56:34,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:56:34,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:56:34,471 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) [2022-07-23 12:56:34,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-23 12:56:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:56:35,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 110 conjunts are in the unsatisfiable core [2022-07-23 12:56:35,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:56:35,174 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 [2022-07-23 12:56:35,320 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 12:56:35,321 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 [2022-07-23 12:56:35,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 12:56:35,341 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 [2022-07-23 12:56:35,348 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 [2022-07-23 12:56:35,420 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 [2022-07-23 12:56:35,423 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 [2022-07-23 12:56:35,538 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2462 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2462))) (exists ((v_ArrVal_2463 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2463)))) is different from true [2022-07-23 12:56:35,547 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2465 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2465))) (exists ((v_ArrVal_2464 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2464)))) is different from true [2022-07-23 12:56:35,578 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2469 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2469))) (exists ((v_ArrVal_2468 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2468) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-23 12:56:35,587 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2471 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2471))) (exists ((v_ArrVal_2470 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2470) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-23 12:56:35,596 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2473 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2473))) (exists ((v_ArrVal_2472 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2472)))) is different from true [2022-07-23 12:56:35,604 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2475 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$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|))) is different from true [2022-07-23 12:56:35,613 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2477 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2477))) (exists ((v_ArrVal_2476 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2476)))) is different from true [2022-07-23 12:56:35,666 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2483 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2483) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2482 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2482) |c_#memory_$Pointer$.base|))) is different from true [2022-07-23 12:56:35,675 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2484 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2484))) (exists ((v_ArrVal_2485 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2485)))) is different from true [2022-07-23 12:56:35,683 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2487 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2487) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2486 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2486)))) is different from true [2022-07-23 12:56:35,691 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2488 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$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)))) is different from true [2022-07-23 12:56:35,700 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2491 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2491))) (exists ((v_ArrVal_2490 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2490)))) is different from true [2022-07-23 12:56:35,708 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2493 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2493) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2492 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2492) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-23 12:56:35,717 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2495 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2495) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2494 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2494)))) is different from true [2022-07-23 12:56:35,725 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2497 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2497) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2496 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2496) |c_#memory_$Pointer$.base|))) is different from true [2022-07-23 12:56:35,734 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2499 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$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|))) is different from true [2022-07-23 12:56:35,804 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2507 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2507) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2506 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2506) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-23 12:56:35,812 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2509 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2509) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2508) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-23 12:56:35,819 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2511 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2511))) (exists ((v_ArrVal_2510 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2510)))) is different from true [2022-07-23 12:56:35,845 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2515 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2515))) (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2514 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2514) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-23 12:56:35,852 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2517 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2517) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2516 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2516)))) is different from true [2022-07-23 12:56:35,877 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2521 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2521) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2520 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2520)))) is different from true [2022-07-23 12:56:35,884 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2522 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$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|))) is different from true [2022-07-23 12:56:35,910 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2527 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2527))) (exists ((v_ArrVal_2526 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2526) |c_#memory_$Pointer$.base|))) is different from true [2022-07-23 12:56:35,918 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2528 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2528) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2529 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2529) |c_#memory_$Pointer$.base|))) is different from true [2022-07-23 12:56:35,925 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2531 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2531))) (exists ((v_ArrVal_2530 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2530)))) is different from true [2022-07-23 12:56:35,971 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2534 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2534) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2535 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2535)))) is different from true [2022-07-23 12:56:35,977 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2537 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2537))) (exists ((v_ArrVal_2536 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2536)))) is different from true [2022-07-23 12:56:36,003 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2541 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2541))) (exists ((v_ArrVal_2540 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2540) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-23 12:56:36,010 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2543 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$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)))) is different from true [2022-07-23 12:56:36,033 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 12:56:36,034 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 [2022-07-23 12:56:36,038 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 [2022-07-23 12:56:36,068 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 [2022-07-23 12:56:36,071 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 [2022-07-23 12:56:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 91 trivial. 885 not checked. [2022-07-23 12:56:36,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 12:56:36,703 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 [2022-07-23 12:56:36,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:56:36,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435902706] [2022-07-23 12:56:36,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435902706] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 12:56:36,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [486886285] [2022-07-23 12:56:36,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:56:36,721 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-23 12:56:36,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-23 12:56:36,722 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) [2022-07-23 12:56:36,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process