./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-1.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 c7b5cea41c34641368705a00e3051c009f6877551b3530b7d4fceaf386f5f58c --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 13:00:38,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 13:00:38,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 13:00:38,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 13:00:38,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 13:00:38,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 13:00:38,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 13:00:38,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 13:00:38,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 13:00:38,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 13:00:38,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 13:00:38,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 13:00:38,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 13:00:38,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 13:00:38,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 13:00:38,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 13:00:38,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 13:00:38,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 13:00:38,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 13:00:38,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 13:00:38,299 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 13:00:38,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 13:00:38,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 13:00:38,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 13:00:38,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 13:00:38,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 13:00:38,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 13:00:38,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 13:00:38,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 13:00:38,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 13:00:38,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 13:00:38,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 13:00:38,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 13:00:38,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 13:00:38,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 13:00:38,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 13:00:38,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 13:00:38,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 13:00:38,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 13:00:38,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 13:00:38,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 13:00:38,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 13:00:38,315 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-14 13:00:38,364 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 13:00:38,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 13:00:38,365 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 13:00:38,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 13:00:38,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 13:00:38,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 13:00:38,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 13:00:38,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 13:00:38,366 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 13:00:38,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 13:00:38,367 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 13:00:38,367 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 13:00:38,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 13:00:38,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 13:00:38,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 13:00:38,368 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-14 13:00:38,368 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-14 13:00:38,368 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-14 13:00:38,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 13:00:38,369 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 13:00:38,370 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 13:00:38,370 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 13:00:38,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 13:00:38,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 13:00:38,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 13:00:38,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 13:00:38,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 13:00:38,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 13:00:38,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 13:00:38,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 13:00:38,373 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7b5cea41c34641368705a00e3051c009f6877551b3530b7d4fceaf386f5f58c [2022-07-14 13:00:38,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 13:00:38,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 13:00:38,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 13:00:38,663 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 13:00:38,663 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 13:00:38,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-1.i [2022-07-14 13:00:38,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7609213b/7ccecc5ab70944a8b8094a21b28ed7d6/FLAG8d5d707a2 [2022-07-14 13:00:39,289 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 13:00:39,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-1.i [2022-07-14 13:00:39,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7609213b/7ccecc5ab70944a8b8094a21b28ed7d6/FLAG8d5d707a2 [2022-07-14 13:00:39,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7609213b/7ccecc5ab70944a8b8094a21b28ed7d6 [2022-07-14 13:00:39,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 13:00:39,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 13:00:39,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 13:00:39,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 13:00:39,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 13:00:39,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:00:39" (1/1) ... [2022-07-14 13:00:39,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b8bcebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:00:39, skipping insertion in model container [2022-07-14 13:00:39,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:00:39" (1/1) ... [2022-07-14 13:00:39,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 13:00:39,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 13:00:40,007 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_FNV_test5-1.i[33021,33034] [2022-07-14 13:00:40,106 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_FNV_test5-1.i[49681,49694] [2022-07-14 13:00:40,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:00:40,133 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-14 13:00:40,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5b379556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:00:40, skipping insertion in model container [2022-07-14 13:00:40,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 13:00:40,135 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-14 13:00:40,136 INFO L158 Benchmark]: Toolchain (without parser) took 577.97ms. Allocated memory is still 111.1MB. Free memory was 78.3MB in the beginning and 72.2MB in the end (delta: 6.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-14 13:00:40,137 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 111.1MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 13:00:40,137 INFO L158 Benchmark]: CACSL2BoogieTranslator took 555.67ms. Allocated memory is still 111.1MB. Free memory was 78.1MB in the beginning and 72.2MB in the end (delta: 5.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-14 13:00:40,138 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 111.1MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 555.67ms. Allocated memory is still 111.1MB. Free memory was 78.1MB in the beginning and 72.2MB in the end (delta: 5.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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_FNV_test5-1.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 c7b5cea41c34641368705a00e3051c009f6877551b3530b7d4fceaf386f5f58c --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 13:00:42,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 13:00:42,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 13:00:42,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 13:00:42,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 13:00:42,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 13:00:42,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 13:00:42,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 13:00:42,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 13:00:42,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 13:00:42,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 13:00:42,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 13:00:42,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 13:00:42,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 13:00:42,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 13:00:42,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 13:00:42,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 13:00:42,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 13:00:42,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 13:00:42,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 13:00:42,240 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 13:00:42,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 13:00:42,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 13:00:42,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 13:00:42,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 13:00:42,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 13:00:42,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 13:00:42,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 13:00:42,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 13:00:42,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 13:00:42,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 13:00:42,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 13:00:42,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 13:00:42,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 13:00:42,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 13:00:42,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 13:00:42,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 13:00:42,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 13:00:42,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 13:00:42,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 13:00:42,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 13:00:42,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 13:00:42,256 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-14 13:00:42,281 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 13:00:42,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 13:00:42,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 13:00:42,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 13:00:42,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 13:00:42,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 13:00:42,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 13:00:42,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 13:00:42,284 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 13:00:42,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 13:00:42,285 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 13:00:42,285 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 13:00:42,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 13:00:42,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 13:00:42,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 13:00:42,299 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-14 13:00:42,299 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-14 13:00:42,300 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-14 13:00:42,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 13:00:42,300 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 13:00:42,300 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-14 13:00:42,300 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-14 13:00:42,300 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 13:00:42,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 13:00:42,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 13:00:42,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 13:00:42,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 13:00:42,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 13:00:42,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 13:00:42,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 13:00:42,302 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-14 13:00:42,302 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-14 13:00:42,302 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-14 13:00:42,302 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7b5cea41c34641368705a00e3051c009f6877551b3530b7d4fceaf386f5f58c [2022-07-14 13:00:42,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 13:00:42,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 13:00:42,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 13:00:42,654 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 13:00:42,655 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 13:00:42,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-1.i [2022-07-14 13:00:42,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68d21894a/49564ca6bac74f6997560849bbc3a139/FLAGad3eeb59d [2022-07-14 13:00:43,190 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 13:00:43,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-1.i [2022-07-14 13:00:43,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68d21894a/49564ca6bac74f6997560849bbc3a139/FLAGad3eeb59d [2022-07-14 13:00:43,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68d21894a/49564ca6bac74f6997560849bbc3a139 [2022-07-14 13:00:43,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 13:00:43,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 13:00:43,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 13:00:43,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 13:00:43,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 13:00:43,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:00:43" (1/1) ... [2022-07-14 13:00:43,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61fa001a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:00:43, skipping insertion in model container [2022-07-14 13:00:43,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:00:43" (1/1) ... [2022-07-14 13:00:43,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 13:00:43,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 13:00:44,154 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_FNV_test5-1.i[33021,33034] [2022-07-14 13:00:44,281 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_FNV_test5-1.i[49681,49694] [2022-07-14 13:00:44,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:00:44,297 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-14 13:00:44,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 13:00:44,333 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_FNV_test5-1.i[33021,33034] [2022-07-14 13:00:44,403 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_FNV_test5-1.i[49681,49694] [2022-07-14 13:00:44,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:00:44,420 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 13:00:44,434 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_FNV_test5-1.i[33021,33034] [2022-07-14 13:00:44,489 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_FNV_test5-1.i[49681,49694] [2022-07-14 13:00:44,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:00:44,533 INFO L208 MainTranslator]: Completed translation [2022-07-14 13:00:44,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:00:44 WrapperNode [2022-07-14 13:00:44,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 13:00:44,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 13:00:44,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 13:00:44,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 13:00:44,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:00:44" (1/1) ... [2022-07-14 13:00:44,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:00:44" (1/1) ... [2022-07-14 13:00:44,649 INFO L137 Inliner]: procedures = 180, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1414 [2022-07-14 13:00:44,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 13:00:44,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 13:00:44,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 13:00:44,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 13:00:44,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:00:44" (1/1) ... [2022-07-14 13:00:44,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:00:44" (1/1) ... [2022-07-14 13:00:44,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:00:44" (1/1) ... [2022-07-14 13:00:44,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:00:44" (1/1) ... [2022-07-14 13:00:44,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:00:44" (1/1) ... [2022-07-14 13:00:44,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:00:44" (1/1) ... [2022-07-14 13:00:44,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:00:44" (1/1) ... [2022-07-14 13:00:44,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 13:00:44,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 13:00:44,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 13:00:44,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 13:00:44,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:00:44" (1/1) ... [2022-07-14 13:00:44,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 13:00:44,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:00:44,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-14 13:00:44,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-14 13:00:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-14 13:00:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-14 13:00:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-14 13:00:44,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-14 13:00:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-14 13:00:44,838 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-14 13:00:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 13:00:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 13:00:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 13:00:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 13:00:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-14 13:00:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 13:00:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 13:00:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-14 13:00:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-14 13:00:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 13:00:44,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 13:00:45,079 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 13:00:45,080 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 13:00:45,082 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-14 13:00:49,119 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 13:00:49,134 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 13:00:49,135 INFO L299 CfgBuilder]: Removed 83 assume(true) statements. [2022-07-14 13:00:49,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:00:49 BoogieIcfgContainer [2022-07-14 13:00:49,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 13:00:49,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 13:00:49,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 13:00:49,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 13:00:49,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 01:00:43" (1/3) ... [2022-07-14 13:00:49,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20184e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:00:49, skipping insertion in model container [2022-07-14 13:00:49,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:00:44" (2/3) ... [2022-07-14 13:00:49,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20184e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:00:49, skipping insertion in model container [2022-07-14 13:00:49,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:00:49" (3/3) ... [2022-07-14 13:00:49,168 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test5-1.i [2022-07-14 13:00:49,179 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 13:00:49,179 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 729 error locations. [2022-07-14 13:00:49,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 13:00:49,240 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@c2398cc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@9235fcf [2022-07-14 13:00:49,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 729 error locations. [2022-07-14 13:00:49,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 1456 states, 719 states have (on average 2.2378303198887344) internal successors, (1609), 1447 states have internal predecessors, (1609), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:00:49,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 13:00:49,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:00:49,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 13:00:49,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:00:49,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:00:49,258 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2022-07-14 13:00:49,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:00:49,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037554970] [2022-07-14 13:00:49,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:00:49,268 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:00:49,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:00:49,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:00:49,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-14 13:00:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:00:49,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-14 13:00:49,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:00:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:00:49,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:00:49,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:00:49,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037554970] [2022-07-14 13:00:49,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037554970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:00:49,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:00:49,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 13:00:49,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420297611] [2022-07-14 13:00:49,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:00:49,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-14 13:00:49,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:00:49,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-14 13:00:49,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 13:00:49,468 INFO L87 Difference]: Start difference. First operand has 1456 states, 719 states have (on average 2.2378303198887344) internal successors, (1609), 1447 states have internal predecessors, (1609), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:00:49,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:00:49,539 INFO L93 Difference]: Finished difference Result 1438 states and 1521 transitions. [2022-07-14 13:00:49,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-14 13:00:49,546 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-14 13:00:49,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:00:49,567 INFO L225 Difference]: With dead ends: 1438 [2022-07-14 13:00:49,567 INFO L226 Difference]: Without dead ends: 1436 [2022-07-14 13:00:49,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 13:00:49,570 INFO L413 NwaCegarLoop]: 1521 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, 1521 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:00:49,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:00:49,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2022-07-14 13:00:49,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2022-07-14 13:00:49,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 710 states have (on average 2.108450704225352) internal successors, (1497), 1427 states have internal predecessors, (1497), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:00:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1519 transitions. [2022-07-14 13:00:49,649 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1519 transitions. Word has length 5 [2022-07-14 13:00:49,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:00:49,649 INFO L495 AbstractCegarLoop]: Abstraction has 1436 states and 1519 transitions. [2022-07-14 13:00:49,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:00:49,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1519 transitions. [2022-07-14 13:00:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 13:00:49,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:00:49,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 13:00:49,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-14 13:00:49,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:00:49,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:00:49,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:00:49,859 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2022-07-14 13:00:49,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:00:49,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077918361] [2022-07-14 13:00:49,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:00:49,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:00:49,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:00:49,878 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:00:49,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-14 13:00:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:00:50,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 13:00:50,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:00:50,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 13:00:50,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:00:50,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:00:50,099 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:00:50,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077918361] [2022-07-14 13:00:50,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077918361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:00:50,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:00:50,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 13:00:50,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387377715] [2022-07-14 13:00:50,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:00:50,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 13:00:50,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:00:50,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 13:00:50,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:00:50,108 INFO L87 Difference]: Start difference. First operand 1436 states and 1519 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:00:52,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:00:52,390 INFO L93 Difference]: Finished difference Result 1692 states and 1818 transitions. [2022-07-14 13:00:52,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 13:00:52,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-14 13:00:52,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:00:52,396 INFO L225 Difference]: With dead ends: 1692 [2022-07-14 13:00:52,400 INFO L226 Difference]: Without dead ends: 1692 [2022-07-14 13:00:52,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:00:52,401 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 1369 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-14 13:00:52,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 1221 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-14 13:00:52,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-07-14 13:00:52,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1421. [2022-07-14 13:00:52,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 786 states have (on average 1.960559796437659) internal successors, (1541), 1412 states have internal predecessors, (1541), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:00:52,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1563 transitions. [2022-07-14 13:00:52,446 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1563 transitions. Word has length 5 [2022-07-14 13:00:52,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:00:52,447 INFO L495 AbstractCegarLoop]: Abstraction has 1421 states and 1563 transitions. [2022-07-14 13:00:52,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:00:52,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1563 transitions. [2022-07-14 13:00:52,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 13:00:52,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:00:52,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 13:00:52,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-14 13:00:52,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:00:52,648 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:00:52,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:00:52,649 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2022-07-14 13:00:52,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:00:52,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971181110] [2022-07-14 13:00:52,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:00:52,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:00:52,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:00:52,654 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:00:52,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-14 13:00:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:00:52,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 13:00:52,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:00:52,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 13:00:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:00:52,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:00:52,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:00:52,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971181110] [2022-07-14 13:00:52,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971181110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:00:52,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:00:52,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 13:00:52,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142469890] [2022-07-14 13:00:52,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:00:52,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 13:00:52,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:00:52,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 13:00:52,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:00:52,814 INFO L87 Difference]: Start difference. First operand 1421 states and 1563 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:00:55,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:00:55,389 INFO L93 Difference]: Finished difference Result 1943 states and 2134 transitions. [2022-07-14 13:00:55,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 13:00:55,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-14 13:00:55,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:00:55,395 INFO L225 Difference]: With dead ends: 1943 [2022-07-14 13:00:55,395 INFO L226 Difference]: Without dead ends: 1943 [2022-07-14 13:00:55,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:00:55,396 INFO L413 NwaCegarLoop]: 1351 mSDtfsCounter, 743 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-14 13:00:55,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1956 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-14 13:00:55,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2022-07-14 13:00:55,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1577. [2022-07-14 13:00:55,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 952 states have (on average 1.940126050420168) internal successors, (1847), 1568 states have internal predecessors, (1847), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:00:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 1869 transitions. [2022-07-14 13:00:55,417 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 1869 transitions. Word has length 5 [2022-07-14 13:00:55,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:00:55,417 INFO L495 AbstractCegarLoop]: Abstraction has 1577 states and 1869 transitions. [2022-07-14 13:00:55,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:00:55,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 1869 transitions. [2022-07-14 13:00:55,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 13:00:55,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:00:55,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-14 13:00:55,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-14 13:00:55,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:00:55,627 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:00:55,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:00:55,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2022-07-14 13:00:55,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:00:55,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294054632] [2022-07-14 13:00:55,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:00:55,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:00:55,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:00:55,630 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:00:55,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-14 13:00:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:00:55,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 13:00:55,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:00:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:00:55,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:00:55,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:00:55,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294054632] [2022-07-14 13:00:55,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294054632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:00:55,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:00:55,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 13:00:55,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881240679] [2022-07-14 13:00:55,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:00:55,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 13:00:55,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:00:55,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 13:00:55,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:00:55,792 INFO L87 Difference]: Start difference. First operand 1577 states and 1869 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:00:55,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:00:55,890 INFO L93 Difference]: Finished difference Result 3137 states and 3721 transitions. [2022-07-14 13:00:55,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 13:00:55,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-14 13:00:55,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:00:55,902 INFO L225 Difference]: With dead ends: 3137 [2022-07-14 13:00:55,902 INFO L226 Difference]: Without dead ends: 3137 [2022-07-14 13:00:55,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:00:55,904 INFO L413 NwaCegarLoop]: 1922 mSDtfsCounter, 1377 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:00:55,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 3330 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:00:55,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3137 states. [2022-07-14 13:00:55,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3137 to 1579. [2022-07-14 13:00:55,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 954 states have (on average 1.9381551362683438) internal successors, (1849), 1570 states have internal predecessors, (1849), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:00:55,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 1871 transitions. [2022-07-14 13:00:55,937 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 1871 transitions. Word has length 6 [2022-07-14 13:00:55,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:00:55,937 INFO L495 AbstractCegarLoop]: Abstraction has 1579 states and 1871 transitions. [2022-07-14 13:00:55,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:00:55,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 1871 transitions. [2022-07-14 13:00:55,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 13:00:55,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:00:55,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:00:55,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-14 13:00:56,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:00:56,145 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:00:56,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:00:56,145 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2022-07-14 13:00:56,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:00:56,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979540487] [2022-07-14 13:00:56,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:00:56,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:00:56,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:00:56,161 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:00:56,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-14 13:00:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:00:56,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 13:00:56,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:00:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:00:56,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:00:56,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:00:56,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979540487] [2022-07-14 13:00:56,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979540487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:00:56,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:00:56,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 13:00:56,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269411558] [2022-07-14 13:00:56,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:00:56,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 13:00:56,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:00:56,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 13:00:56,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:00:56,294 INFO L87 Difference]: Start difference. First operand 1579 states and 1871 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:00:56,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:00:56,321 INFO L93 Difference]: Finished difference Result 1543 states and 1834 transitions. [2022-07-14 13:00:56,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 13:00:56,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-14 13:00:56,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:00:56,325 INFO L225 Difference]: With dead ends: 1543 [2022-07-14 13:00:56,325 INFO L226 Difference]: Without dead ends: 1543 [2022-07-14 13:00:56,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:00:56,326 INFO L413 NwaCegarLoop]: 1370 mSDtfsCounter, 1340 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:00:56,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 1398 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:00:56,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2022-07-14 13:00:56,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1537. [2022-07-14 13:00:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 936 states have (on average 1.9294871794871795) internal successors, (1806), 1528 states have internal predecessors, (1806), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:00:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 1828 transitions. [2022-07-14 13:00:56,344 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 1828 transitions. Word has length 11 [2022-07-14 13:00:56,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:00:56,345 INFO L495 AbstractCegarLoop]: Abstraction has 1537 states and 1828 transitions. [2022-07-14 13:00:56,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:00:56,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 1828 transitions. [2022-07-14 13:00:56,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-14 13:00:56,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:00:56,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:00:56,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-14 13:00:56,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:00:56,554 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:00:56,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:00:56,554 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2022-07-14 13:00:56,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:00:56,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355513092] [2022-07-14 13:00:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:00:56,555 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:00:56,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:00:56,556 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:00:56,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-14 13:00:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:00:56,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 13:00:56,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:00:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:00:56,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:00:56,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:00:56,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355513092] [2022-07-14 13:00:56,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355513092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:00:56,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:00:56,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:00:56,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659587487] [2022-07-14 13:00:56,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:00:56,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:00:56,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:00:56,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:00:56,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:00:56,694 INFO L87 Difference]: Start difference. First operand 1537 states and 1828 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:00:56,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:00:56,752 INFO L93 Difference]: Finished difference Result 1522 states and 1806 transitions. [2022-07-14 13:00:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 13:00:56,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-14 13:00:56,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:00:56,756 INFO L225 Difference]: With dead ends: 1522 [2022-07-14 13:00:56,756 INFO L226 Difference]: Without dead ends: 1522 [2022-07-14 13:00:56,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:00:56,757 INFO L413 NwaCegarLoop]: 1325 mSDtfsCounter, 1311 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:00:56,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1322 Valid, 2671 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:00:56,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2022-07-14 13:00:56,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1515. [2022-07-14 13:00:56,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 928 states have (on average 1.9148706896551724) internal successors, (1777), 1506 states have internal predecessors, (1777), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:00:56,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1799 transitions. [2022-07-14 13:00:56,773 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1799 transitions. Word has length 13 [2022-07-14 13:00:56,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:00:56,774 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 1799 transitions. [2022-07-14 13:00:56,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:00:56,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1799 transitions. [2022-07-14 13:00:56,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-14 13:00:56,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:00:56,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:00:56,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-14 13:00:56,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:00:56,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:00:56,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:00:56,983 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2022-07-14 13:00:56,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:00:56,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053635303] [2022-07-14 13:00:56,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:00:56,984 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:00:56,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:00:56,985 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:00:57,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-14 13:00:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:00:57,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 13:00:57,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:00:57,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 13:00:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:00:57,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:00:57,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:00:57,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053635303] [2022-07-14 13:00:57,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053635303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:00:57,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:00:57,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 13:00:57,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946117224] [2022-07-14 13:00:57,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:00:57,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:00:57,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:00:57,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:00:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:00:57,181 INFO L87 Difference]: Start difference. First operand 1515 states and 1799 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:00:59,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:00:59,665 INFO L93 Difference]: Finished difference Result 2377 states and 2689 transitions. [2022-07-14 13:00:59,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 13:00:59,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-14 13:00:59,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:00:59,672 INFO L225 Difference]: With dead ends: 2377 [2022-07-14 13:00:59,672 INFO L226 Difference]: Without dead ends: 2377 [2022-07-14 13:00:59,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:00:59,673 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 3015 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3023 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:00:59,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3023 Valid, 1552 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-14 13:00:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2022-07-14 13:00:59,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 1511. [2022-07-14 13:00:59,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 928 states have (on average 1.9105603448275863) internal successors, (1773), 1502 states have internal predecessors, (1773), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:00:59,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 1795 transitions. [2022-07-14 13:00:59,711 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 1795 transitions. Word has length 27 [2022-07-14 13:00:59,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:00:59,711 INFO L495 AbstractCegarLoop]: Abstraction has 1511 states and 1795 transitions. [2022-07-14 13:00:59,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:00:59,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 1795 transitions. [2022-07-14 13:00:59,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-14 13:00:59,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:00:59,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:00:59,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-14 13:00:59,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:00:59,921 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:00:59,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:00:59,921 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2022-07-14 13:00:59,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:00:59,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141662217] [2022-07-14 13:00:59,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:00:59,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:00:59,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:00:59,923 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:00:59,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-14 13:01:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:01:00,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 13:01:00,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:01:00,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 13:01:00,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:01:00,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:01:00,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:01:00,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141662217] [2022-07-14 13:01:00,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141662217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:01:00,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:01:00,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 13:01:00,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136961159] [2022-07-14 13:01:00,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:01:00,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:01:00,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:01:00,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:01:00,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:01:00,198 INFO L87 Difference]: Start difference. First operand 1511 states and 1795 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:01:03,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:01:03,219 INFO L93 Difference]: Finished difference Result 1880 states and 2063 transitions. [2022-07-14 13:01:03,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 13:01:03,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-14 13:01:03,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:01:03,224 INFO L225 Difference]: With dead ends: 1880 [2022-07-14 13:01:03,225 INFO L226 Difference]: Without dead ends: 1880 [2022-07-14 13:01:03,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:01:03,225 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 1293 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:01:03,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 2272 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1558 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-14 13:01:03,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2022-07-14 13:01:03,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1507. [2022-07-14 13:01:03,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 928 states have (on average 1.90625) internal successors, (1769), 1498 states have internal predecessors, (1769), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:01:03,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1791 transitions. [2022-07-14 13:01:03,243 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1791 transitions. Word has length 27 [2022-07-14 13:01:03,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:01:03,243 INFO L495 AbstractCegarLoop]: Abstraction has 1507 states and 1791 transitions. [2022-07-14 13:01:03,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:01:03,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1791 transitions. [2022-07-14 13:01:03,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-14 13:01:03,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:01:03,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:01:03,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-14 13:01:03,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:01:03,451 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:01:03,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:01:03,452 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2022-07-14 13:01:03,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:01:03,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463093425] [2022-07-14 13:01:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:01:03,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:01:03,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:01:03,454 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:01:03,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-14 13:01:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:01:03,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 13:01:03,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:01:03,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:01:03,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:01:03,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:01:03,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463093425] [2022-07-14 13:01:03,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463093425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:01:03,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:01:03,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:01:03,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128976183] [2022-07-14 13:01:03,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:01:03,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:01:03,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:01:03,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:01:03,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:01:03,645 INFO L87 Difference]: Start difference. First operand 1507 states and 1791 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:01:03,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:01:03,684 INFO L93 Difference]: Finished difference Result 1507 states and 1787 transitions. [2022-07-14 13:01:03,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 13:01:03,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-07-14 13:01:03,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:01:03,688 INFO L225 Difference]: With dead ends: 1507 [2022-07-14 13:01:03,688 INFO L226 Difference]: Without dead ends: 1507 [2022-07-14 13:01:03,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:01:03,690 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 1287 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:01:03,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1298 Valid, 2649 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:01:03,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2022-07-14 13:01:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1501. [2022-07-14 13:01:03,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 922 states have (on average 1.9078091106290673) internal successors, (1759), 1492 states have internal predecessors, (1759), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:01:03,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 1781 transitions. [2022-07-14 13:01:03,739 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 1781 transitions. Word has length 42 [2022-07-14 13:01:03,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:01:03,741 INFO L495 AbstractCegarLoop]: Abstraction has 1501 states and 1781 transitions. [2022-07-14 13:01:03,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:01:03,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 1781 transitions. [2022-07-14 13:01:03,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-14 13:01:03,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:01:03,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:01:03,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-14 13:01:03,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:01:03,944 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:01:03,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:01:03,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2022-07-14 13:01:03,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:01:03,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309623991] [2022-07-14 13:01:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:01:03,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:01:03,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:01:03,955 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:01:03,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-14 13:01:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:01:04,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 13:01:04,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:01:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:01:04,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:01:04,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:01:04,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309623991] [2022-07-14 13:01:04,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309623991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:01:04,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:01:04,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 13:01:04,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865577921] [2022-07-14 13:01:04,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:01:04,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 13:01:04,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:01:04,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 13:01:04,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:01:04,267 INFO L87 Difference]: Start difference. First operand 1501 states and 1781 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:01:04,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:01:04,314 INFO L93 Difference]: Finished difference Result 1547 states and 1827 transitions. [2022-07-14 13:01:04,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 13:01:04,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-07-14 13:01:04,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:01:04,319 INFO L225 Difference]: With dead ends: 1547 [2022-07-14 13:01:04,319 INFO L226 Difference]: Without dead ends: 1547 [2022-07-14 13:01:04,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:01:04,319 INFO L413 NwaCegarLoop]: 1327 mSDtfsCounter, 67 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2559 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 [2022-07-14 13:01:04,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 2559 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:01:04,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2022-07-14 13:01:04,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1547. [2022-07-14 13:01:04,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1547 states, 968 states have (on average 1.8646694214876034) internal successors, (1805), 1538 states have internal predecessors, (1805), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:01:04,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 1827 transitions. [2022-07-14 13:01:04,350 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 1827 transitions. Word has length 50 [2022-07-14 13:01:04,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:01:04,351 INFO L495 AbstractCegarLoop]: Abstraction has 1547 states and 1827 transitions. [2022-07-14 13:01:04,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:01:04,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 1827 transitions. [2022-07-14 13:01:04,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-14 13:01:04,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:01:04,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:01:04,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-14 13:01:04,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:01:04,552 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:01:04,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:01:04,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2022-07-14 13:01:04,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:01:04,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45078851] [2022-07-14 13:01:04,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:01:04,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:01:04,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:01:04,555 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:01:04,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-14 13:01:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:01:04,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 13:01:04,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:01:04,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 13:01:04,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 13:01:05,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 13:01:05,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-14 13:01:05,095 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 13:01:05,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-14 13:01:05,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:01:05,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:01:05,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:01:05,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45078851] [2022-07-14 13:01:05,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45078851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:01:05,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:01:05,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 13:01:05,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182059273] [2022-07-14 13:01:05,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:01:05,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:01:05,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:01:05,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:01:05,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:01:05,108 INFO L87 Difference]: Start difference. First operand 1547 states and 1827 transitions. Second operand has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:01:07,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:01:07,193 INFO L93 Difference]: Finished difference Result 1734 states and 1998 transitions. [2022-07-14 13:01:07,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 13:01:07,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-07-14 13:01:07,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:01:07,197 INFO L225 Difference]: With dead ends: 1734 [2022-07-14 13:01:07,197 INFO L226 Difference]: Without dead ends: 1734 [2022-07-14 13:01:07,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:01:07,198 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 1571 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:01:07,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 617 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-14 13:01:07,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2022-07-14 13:01:07,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1297. [2022-07-14 13:01:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 802 states have (on average 1.7506234413965087) internal successors, (1404), 1288 states have internal predecessors, (1404), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:01:07,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 1426 transitions. [2022-07-14 13:01:07,220 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 1426 transitions. Word has length 53 [2022-07-14 13:01:07,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:01:07,220 INFO L495 AbstractCegarLoop]: Abstraction has 1297 states and 1426 transitions. [2022-07-14 13:01:07,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:01:07,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 1426 transitions. [2022-07-14 13:01:07,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-14 13:01:07,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:01:07,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:01:07,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-14 13:01:07,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:01:07,433 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:01:07,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:01:07,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2022-07-14 13:01:07,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:01:07,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296927028] [2022-07-14 13:01:07,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:01:07,436 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:01:07,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:01:07,443 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:01:07,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-14 13:01:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:01:07,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 13:01:07,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:01:07,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 13:01:07,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 13:01:07,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-07-14 13:01:07,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:01:07,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:01:07,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:01:07,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296927028] [2022-07-14 13:01:07,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296927028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:01:07,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:01:07,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:01:07,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52267967] [2022-07-14 13:01:07,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:01:07,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:01:07,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:01:07,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:01:07,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:01:07,748 INFO L87 Difference]: Start difference. First operand 1297 states and 1426 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:01:09,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:01:09,916 INFO L93 Difference]: Finished difference Result 1296 states and 1425 transitions. [2022-07-14 13:01:09,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 13:01:09,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-14 13:01:09,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:01:09,919 INFO L225 Difference]: With dead ends: 1296 [2022-07-14 13:01:09,919 INFO L226 Difference]: Without dead ends: 1296 [2022-07-14 13:01:09,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-14 13:01:09,920 INFO L413 NwaCegarLoop]: 1239 mSDtfsCounter, 4 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3179 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:01:09,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3179 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-14 13:01:09,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2022-07-14 13:01:09,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1296. [2022-07-14 13:01:09,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 802 states have (on average 1.7493765586034913) internal successors, (1403), 1287 states have internal predecessors, (1403), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:01:09,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1425 transitions. [2022-07-14 13:01:09,937 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1425 transitions. Word has length 58 [2022-07-14 13:01:09,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:01:09,938 INFO L495 AbstractCegarLoop]: Abstraction has 1296 states and 1425 transitions. [2022-07-14 13:01:09,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:01:09,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1425 transitions. [2022-07-14 13:01:09,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-14 13:01:09,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:01:09,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:01:09,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-14 13:01:10,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:01:10,150 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:01:10,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:01:10,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2022-07-14 13:01:10,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:01:10,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54690827] [2022-07-14 13:01:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:01:10,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:01:10,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:01:10,161 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:01:10,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-14 13:01:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:01:10,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 13:01:10,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:01:10,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 13:01:10,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 13:01:10,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 13:01:10,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-07-14 13:01:10,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-14 13:01:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:01:10,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:01:10,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:01:10,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54690827] [2022-07-14 13:01:10,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54690827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:01:10,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:01:10,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:01:10,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517534912] [2022-07-14 13:01:10,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:01:10,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:01:10,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:01:10,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:01:10,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:01:10,465 INFO L87 Difference]: Start difference. First operand 1296 states and 1425 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:01:13,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:01:13,190 INFO L93 Difference]: Finished difference Result 1295 states and 1424 transitions. [2022-07-14 13:01:13,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 13:01:13,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-14 13:01:13,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:01:13,194 INFO L225 Difference]: With dead ends: 1295 [2022-07-14 13:01:13,194 INFO L226 Difference]: Without dead ends: 1295 [2022-07-14 13:01:13,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-14 13:01:13,194 INFO L413 NwaCegarLoop]: 1239 mSDtfsCounter, 2 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-14 13:01:13,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3209 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-14 13:01:13,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2022-07-14 13:01:13,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1295. [2022-07-14 13:01:13,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 801 states have (on average 1.7503121098626717) internal successors, (1402), 1286 states have internal predecessors, (1402), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:01:13,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1424 transitions. [2022-07-14 13:01:13,208 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1424 transitions. Word has length 58 [2022-07-14 13:01:13,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:01:13,208 INFO L495 AbstractCegarLoop]: Abstraction has 1295 states and 1424 transitions. [2022-07-14 13:01:13,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:01:13,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1424 transitions. [2022-07-14 13:01:13,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-14 13:01:13,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:01:13,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:01:13,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-14 13:01:13,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:01:13,420 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:01:13,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:01:13,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1665547938, now seen corresponding path program 1 times [2022-07-14 13:01:13,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:01:13,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860452624] [2022-07-14 13:01:13,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:01:13,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:01:13,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:01:13,423 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:01:13,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-14 13:01:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:01:13,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 13:01:13,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:01:13,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:01:13,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:01:13,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:01:13,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860452624] [2022-07-14 13:01:13,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860452624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:01:13,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:01:13,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:01:13,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142179925] [2022-07-14 13:01:13,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:01:13,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:01:13,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:01:13,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:01:13,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:01:13,682 INFO L87 Difference]: Start difference. First operand 1295 states and 1424 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:01:13,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:01:13,721 INFO L93 Difference]: Finished difference Result 1298 states and 1429 transitions. [2022-07-14 13:01:13,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 13:01:13,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2022-07-14 13:01:13,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:01:13,726 INFO L225 Difference]: With dead ends: 1298 [2022-07-14 13:01:13,726 INFO L226 Difference]: Without dead ends: 1298 [2022-07-14 13:01:13,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:01:13,727 INFO L413 NwaCegarLoop]: 1238 mSDtfsCounter, 2 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3706 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:01:13,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3706 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:01:13,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2022-07-14 13:01:13,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1298. [2022-07-14 13:01:13,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 803 states have (on average 1.7496886674968868) internal successors, (1405), 1289 states have internal predecessors, (1405), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-07-14 13:01:13,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 1429 transitions. [2022-07-14 13:01:13,750 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 1429 transitions. Word has length 66 [2022-07-14 13:01:13,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:01:13,751 INFO L495 AbstractCegarLoop]: Abstraction has 1298 states and 1429 transitions. [2022-07-14 13:01:13,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:01:13,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 1429 transitions. [2022-07-14 13:01:13,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-14 13:01:13,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:01:13,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:01:13,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-14 13:01:13,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:01:13,962 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:01:13,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:01:13,962 INFO L85 PathProgramCache]: Analyzing trace with hash 382130565, now seen corresponding path program 1 times [2022-07-14 13:01:13,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:01:13,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141997312] [2022-07-14 13:01:13,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:01:13,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:01:13,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:01:13,965 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:01:13,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-14 13:01:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:01:14,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 13:01:14,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:01:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:01:14,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:01:14,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:01:14,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:01:14,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141997312] [2022-07-14 13:01:14,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141997312] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:01:14,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:01:14,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-14 13:01:14,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602662030] [2022-07-14 13:01:14,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:01:14,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 13:01:14,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:01:14,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 13:01:14,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-14 13:01:14,283 INFO L87 Difference]: Start difference. First operand 1298 states and 1429 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:01:14,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:01:14,414 INFO L93 Difference]: Finished difference Result 1310 states and 1447 transitions. [2022-07-14 13:01:14,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 13:01:14,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2022-07-14 13:01:14,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:01:14,417 INFO L225 Difference]: With dead ends: 1310 [2022-07-14 13:01:14,417 INFO L226 Difference]: Without dead ends: 1310 [2022-07-14 13:01:14,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-07-14 13:01:14,418 INFO L413 NwaCegarLoop]: 1238 mSDtfsCounter, 18 mSDsluCounter, 3699 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4937 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:01:14,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 4937 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:01:14,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-07-14 13:01:14,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1308. [2022-07-14 13:01:14,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 812 states have (on average 1.748768472906404) internal successors, (1420), 1298 states have internal predecessors, (1420), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-07-14 13:01:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 1444 transitions. [2022-07-14 13:01:14,445 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 1444 transitions. Word has length 67 [2022-07-14 13:01:14,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:01:14,446 INFO L495 AbstractCegarLoop]: Abstraction has 1308 states and 1444 transitions. [2022-07-14 13:01:14,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:01:14,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 1444 transitions. [2022-07-14 13:01:14,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-14 13:01:14,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:01:14,446 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:01:14,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-14 13:01:14,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:01:14,656 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:01:14,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:01:14,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1129452318, now seen corresponding path program 2 times [2022-07-14 13:01:14,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:01:14,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244936362] [2022-07-14 13:01:14,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:01:14,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:01:14,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:01:14,663 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:01:14,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-14 13:01:15,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:01:15,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:01:15,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 13:01:15,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:01:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:01:15,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:01:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:01:15,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:01:15,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244936362] [2022-07-14 13:01:15,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244936362] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:01:15,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:01:15,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-14 13:01:15,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630840472] [2022-07-14 13:01:15,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:01:15,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-14 13:01:15,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:01:15,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-14 13:01:15,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-14 13:01:15,310 INFO L87 Difference]: Start difference. First operand 1308 states and 1444 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:01:15,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:01:15,813 INFO L93 Difference]: Finished difference Result 1329 states and 1476 transitions. [2022-07-14 13:01:15,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-14 13:01:15,813 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2022-07-14 13:01:15,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:01:15,821 INFO L225 Difference]: With dead ends: 1329 [2022-07-14 13:01:15,821 INFO L226 Difference]: Without dead ends: 1325 [2022-07-14 13:01:15,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2022-07-14 13:01:15,822 INFO L413 NwaCegarLoop]: 1241 mSDtfsCounter, 56 mSDsluCounter, 6184 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 7425 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 13:01:15,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 7425 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 13:01:15,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2022-07-14 13:01:15,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1317. [2022-07-14 13:01:15,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 821 states have (on average 1.7442143727161998) internal successors, (1432), 1307 states have internal predecessors, (1432), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-07-14 13:01:15,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1456 transitions. [2022-07-14 13:01:15,872 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1456 transitions. Word has length 70 [2022-07-14 13:01:15,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:01:15,872 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 1456 transitions. [2022-07-14 13:01:15,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:01:15,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1456 transitions. [2022-07-14 13:01:15,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-14 13:01:15,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:01:15,873 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:01:15,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-14 13:01:16,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:01:16,095 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:01:16,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:01:16,096 INFO L85 PathProgramCache]: Analyzing trace with hash 439069118, now seen corresponding path program 3 times [2022-07-14 13:01:16,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:01:16,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980818639] [2022-07-14 13:01:16,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:01:16,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:01:16,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:01:16,098 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:01:16,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-14 13:01:16,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-14 13:01:16,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:01:16,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 13:01:16,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:01:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:01:16,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:01:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:01:17,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:01:17,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980818639] [2022-07-14 13:01:17,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980818639] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:01:17,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:01:17,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-14 13:01:17,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049929433] [2022-07-14 13:01:17,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:01:17,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-14 13:01:17,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:01:17,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-14 13:01:17,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-07-14 13:01:17,447 INFO L87 Difference]: Start difference. First operand 1317 states and 1456 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:01:20,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:01:20,085 INFO L93 Difference]: Finished difference Result 1359 states and 1532 transitions. [2022-07-14 13:01:20,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-14 13:01:20,086 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2022-07-14 13:01:20,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:01:20,089 INFO L225 Difference]: With dead ends: 1359 [2022-07-14 13:01:20,089 INFO L226 Difference]: Without dead ends: 1353 [2022-07-14 13:01:20,090 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 [2022-07-14 13:01:20,090 INFO L413 NwaCegarLoop]: 1245 mSDtfsCounter, 170 mSDsluCounter, 16089 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 17334 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:01:20,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 17334 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-14 13:01:20,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2022-07-14 13:01:20,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1335. [2022-07-14 13:01:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 839 states have (on average 1.7342073897497021) internal successors, (1455), 1325 states have internal predecessors, (1455), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-07-14 13:01:20,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1479 transitions. [2022-07-14 13:01:20,130 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1479 transitions. Word has length 76 [2022-07-14 13:01:20,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:01:20,131 INFO L495 AbstractCegarLoop]: Abstraction has 1335 states and 1479 transitions. [2022-07-14 13:01:20,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:01:20,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1479 transitions. [2022-07-14 13:01:20,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-14 13:01:20,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:01:20,132 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:01:20,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-14 13:01:20,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:01:20,344 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:01:20,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:01:20,345 INFO L85 PathProgramCache]: Analyzing trace with hash -772903170, now seen corresponding path program 4 times [2022-07-14 13:01:20,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:01:20,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422894384] [2022-07-14 13:01:20,345 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 13:01:20,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:01:20,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:01:20,346 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:01:20,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-14 13:01:20,652 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 13:01:20,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:01:20,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-14 13:01:20,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:01:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:01:21,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:01:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:01:22,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:01:22,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422894384] [2022-07-14 13:01:22,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422894384] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:01:22,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:01:22,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-07-14 13:01:22,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995279997] [2022-07-14 13:01:22,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:01:22,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-14 13:01:22,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:01:22,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-14 13:01:22,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2022-07-14 13:01:22,226 INFO L87 Difference]: Start difference. First operand 1335 states and 1479 transitions. Second operand has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:01:33,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:01:33,028 INFO L93 Difference]: Finished difference Result 1415 states and 1612 transitions. [2022-07-14 13:01:33,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-07-14 13:01:33,028 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 88 [2022-07-14 13:01:33,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:01:33,031 INFO L225 Difference]: With dead ends: 1415 [2022-07-14 13:01:33,032 INFO L226 Difference]: Without dead ends: 1411 [2022-07-14 13:01:33,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2022-07-14 13:01:33,034 INFO L413 NwaCegarLoop]: 1258 mSDtfsCounter, 391 mSDsluCounter, 30053 mSDsCounter, 0 mSdLazyCounter, 3028 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 31311 SdHoareTripleChecker+Invalid, 3470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 3028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-14 13:01:33,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 31311 Invalid, 3470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 3028 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-14 13:01:33,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-07-14 13:01:33,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1369. [2022-07-14 13:01:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 873 states have (on average 1.7193585337915236) internal successors, (1501), 1359 states have internal predecessors, (1501), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-07-14 13:01:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1525 transitions. [2022-07-14 13:01:33,051 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1525 transitions. Word has length 88 [2022-07-14 13:01:33,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:01:33,051 INFO L495 AbstractCegarLoop]: Abstraction has 1369 states and 1525 transitions. [2022-07-14 13:01:33,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:01:33,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1525 transitions. [2022-07-14 13:01:33,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-14 13:01:33,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:01:33,052 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] [2022-07-14 13:01:33,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-14 13:01:33,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 13:01:33,263 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:01:33,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:01:33,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1270031518, now seen corresponding path program 5 times [2022-07-14 13:01:33,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:01:33,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167990666] [2022-07-14 13:01:33,264 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 13:01:33,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:01:33,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:01:33,266 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:01:33,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-14 13:01:34,455 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-07-14 13:01:34,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:01:34,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 59 conjunts are in the unsatisfiable core [2022-07-14 13:01:34,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:01:34,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 13:01:34,578 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-14 13:01:34,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 24 [2022-07-14 13:01:34,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 13:01:34,658 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 22 treesize of output 10 [2022-07-14 13:01:34,889 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_1607 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1607)))) is different from true [2022-07-14 13:01:34,901 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_1608 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1608)))) is different from true [2022-07-14 13:01:35,272 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_1622 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1622)))) is different from true [2022-07-14 13:01:35,552 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_1634 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1634) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:01:35,563 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_1635 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1635)))) is different from true [2022-07-14 13:01:35,659 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_1640 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1640)))) is different from true [2022-07-14 13:01:35,669 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_1641 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1641) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:01:35,745 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-14 13:01:35,745 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 34 treesize of output 35 [2022-07-14 13:01:35,776 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 31 treesize of output 13 [2022-07-14 13:01:35,799 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 666 trivial. 287 not checked. [2022-07-14 13:01:35,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:01:36,008 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1689 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_1689) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1))) is different from false [2022-07-14 13:01:36,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:01:36,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167990666] [2022-07-14 13:01:36,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167990666] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:01:36,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1634501864] [2022-07-14 13:01:36,010 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 13:01:36,010 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 13:01:36,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 13:01:36,013 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 13:01:36,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-07-14 13:03:09,472 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-07-14 13:03:09,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:03:09,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-14 13:03:09,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:03:09,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 13:03:09,806 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-14 13:03:09,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 24 [2022-07-14 13:03:09,815 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 13:03:09,853 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 22 treesize of output 10 [2022-07-14 13:03:10,131 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2059 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2059)))) is different from true [2022-07-14 13:03:10,305 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2070 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2070) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:03:10,430 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2077 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2077)))) is different from true [2022-07-14 13:03:10,440 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2078 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2078)))) is different from true [2022-07-14 13:03:10,468 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2080 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2080)))) is different from true [2022-07-14 13:03:10,515 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2083 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2083) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:03:10,815 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-14 13:03:10,815 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 34 treesize of output 35 [2022-07-14 13:03:10,845 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 31 treesize of output 13 [2022-07-14 13:03:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 703 trivial. 249 not checked. [2022-07-14 13:03:10,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:03:11,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1634501864] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:03:11,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:03:11,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 21 [2022-07-14 13:03:11,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139268158] [2022-07-14 13:03:11,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:03:11,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-14 13:03:11,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 13:03:11,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-14 13:03:11,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=107, Unknown=24, NotChecked=462, Total=650 [2022-07-14 13:03:11,078 INFO L87 Difference]: Start difference. First operand 1369 states and 1525 transitions. Second operand has 22 states, 20 states have (on average 4.4) internal successors, (88), 22 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:03:11,259 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1600 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1600) |c_#memory_$Pointer$.base|)) (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_1607 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1607))) (exists ((v_ArrVal_1640 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1640))) (exists ((v_ArrVal_2070 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2070) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2083 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2083) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2059 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2059))) (exists ((v_ArrVal_1634 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1634) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1622 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1622))) (exists ((v_ArrVal_2080 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2080))) (exists ((v_ArrVal_2077 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2077)))) is different from true [2022-07-14 13:03:11,264 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1600 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1600) |c_#memory_$Pointer$.base|)) (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_1607 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1607))) (exists ((v_ArrVal_2078 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2078))) (exists ((v_ArrVal_1640 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1640))) (exists ((v_ArrVal_2070 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2070) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2083 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2083) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2059 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2059))) (exists ((v_ArrVal_1608 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1608))) (exists ((v_ArrVal_1634 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1634) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1622 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1622))) (exists ((v_ArrVal_1635 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1635))) (exists ((v_ArrVal_1641 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1641) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2080 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2080))) (exists ((v_ArrVal_2077 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2077)))) is different from true [2022-07-14 13:03:14,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:03:14,602 INFO L93 Difference]: Finished difference Result 1692 states and 1835 transitions. [2022-07-14 13:03:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 13:03:14,602 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 4.4) internal successors, (88), 22 states have internal predecessors, (88), 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 110 [2022-07-14 13:03:14,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:03:14,605 INFO L225 Difference]: With dead ends: 1692 [2022-07-14 13:03:14,605 INFO L226 Difference]: Without dead ends: 1688 [2022-07-14 13:03:14,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 124 SyntacticMatches, 78 SemanticMatches, 28 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=74, Invalid=144, Unknown=28, NotChecked=624, Total=870 [2022-07-14 13:03:14,606 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1140 mSDsluCounter, 3636 mSDsCounter, 0 mSdLazyCounter, 2561 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 4297 SdHoareTripleChecker+Invalid, 26691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24118 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:03:14,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 4297 Invalid, 26691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2561 Invalid, 0 Unknown, 24118 Unchecked, 3.4s Time] [2022-07-14 13:03:14,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2022-07-14 13:03:14,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1417. [2022-07-14 13:03:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 921 states have (on average 1.6818675352877308) internal successors, (1549), 1406 states have internal predecessors, (1549), 11 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-07-14 13:03:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1573 transitions. [2022-07-14 13:03:14,644 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1573 transitions. Word has length 110 [2022-07-14 13:03:14,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:03:14,645 INFO L495 AbstractCegarLoop]: Abstraction has 1417 states and 1573 transitions. [2022-07-14 13:03:14,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 4.4) internal successors, (88), 22 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:03:14,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1573 transitions. [2022-07-14 13:03:14,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-14 13:03:14,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:03:14,646 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:03:14,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-14 13:03:14,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2022-07-14 13:03:15,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-14 13:03:15,070 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 726 more)] === [2022-07-14 13:03:15,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:03:15,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1270031519, now seen corresponding path program 1 times [2022-07-14 13:03:15,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 13:03:15,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105036470] [2022-07-14 13:03:15,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:03:15,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 13:03:15,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 13:03:15,072 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 13:03:15,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-14 13:03:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:03:15,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 109 conjunts are in the unsatisfiable core [2022-07-14 13:03:15,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:03:15,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 13:03:15,836 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 13:03:15,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-14 13:03:15,840 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 [2022-07-14 13:03:15,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 13:03:15,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 13:03:15,923 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 22 treesize of output 10 [2022-07-14 13:03:15,928 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 9 treesize of output 3 [2022-07-14 13:03:15,965 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2499 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2499))) (exists ((v_ArrVal_2498 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2498))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-07-14 13:03:15,972 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2501 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2501))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2500 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2500)))) is different from true [2022-07-14 13:03:15,979 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2503 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2503))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2502 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2502)))) is different from true [2022-07-14 13:03:16,011 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2507 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2507))) (exists ((v_ArrVal_2506 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2506) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:03:16,019 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2509 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2509) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2508) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-14 13:03:16,045 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2513 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2513))) (exists ((v_ArrVal_2512 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2512)))) is different from true [2022-07-14 13:03:16,053 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2514 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2514))) (exists ((v_ArrVal_2515 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2515))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-07-14 13:03:16,061 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2516 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2516) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2517 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2517))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-07-14 13:03:16,071 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2518 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2518))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2519 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2519)))) is different from true [2022-07-14 13:03:16,078 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2520 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2520))) (exists ((v_ArrVal_2521 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2521)))) is different from true [2022-07-14 13:03:16,086 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2522 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2522))) (exists ((v_ArrVal_2523 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2523) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-07-14 13:03:16,112 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2527 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2527))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2526 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2526) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:03:16,119 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2528 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2528) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2529 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2529) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:03:16,145 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2532 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2532) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2533 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2533) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-07-14 13:03:16,152 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2534 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2534) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2535 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2535)))) is different from true [2022-07-14 13:03:16,159 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2537 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2537) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2536 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2536)))) is different from true [2022-07-14 13:03:16,166 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2539 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2539))) (exists ((v_ArrVal_2538 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2538) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-14 13:03:16,173 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2540 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2540) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2541 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2541) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-14 13:03:16,181 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2543 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2543))) (exists ((v_ArrVal_2542 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2542))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-07-14 13:03:16,188 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2545 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2545) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2544 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2544) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-14 13:03:16,195 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2546 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2546) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2547 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2547))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-07-14 13:03:16,202 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2548 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2548) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2549 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2549) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:03:16,210 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2551 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2551))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2550 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2550) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:03:16,217 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2553 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2553))) (exists ((v_ArrVal_2552 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2552)))) is different from true [2022-07-14 13:03:16,259 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2557 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2557))) (exists ((v_ArrVal_2556 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2556) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 13:03:16,267 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2559 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2559))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2558 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2558)))) is different from true [2022-07-14 13:03:16,274 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2561 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2561) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2560 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2560) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-07-14 13:03:16,334 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2569 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2569))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2568 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2568)))) is different from true [2022-07-14 13:03:16,342 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2570 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2570) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2571 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2571))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-07-14 13:03:16,402 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2578 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2578))) (exists ((v_ArrVal_2579 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2579) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-07-14 13:03:16,427 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2582 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2582) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2583 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2583))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-07-14 13:03:16,434 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2584 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2584))) (exists ((v_ArrVal_2585 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2585))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-07-14 13:03:16,459 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-14 13:03:16,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-07-14 13:03:16,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-07-14 13:03:16,486 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 31 treesize of output 13 [2022-07-14 13:03:16,489 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 19 treesize of output 7 [2022-07-14 13:03:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 66 trivial. 912 not checked. [2022-07-14 13:03:16,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:03:17,106 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2677 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2677) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_2677 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2676 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2677) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2676) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-07-14 13:03:17,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 13:03:17,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105036470] [2022-07-14 13:03:17,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105036470] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:03:17,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [5899226] [2022-07-14 13:03:17,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:03:17,112 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 13:03:17,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 13:03:17,113 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 13:03:17,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process