./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1fe25077175322d8d5e3cefee67a534dcd61077607911040f354db1679589b09 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 13:01:44,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 13:01:44,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 13:01:44,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 13:01:44,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 13:01:44,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 13:01:44,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 13:01:44,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 13:01:44,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 13:01:44,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 13:01:44,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 13:01:44,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 13:01:44,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 13:01:44,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 13:01:44,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 13:01:44,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 13:01:44,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 13:01:44,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 13:01:44,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 13:01:44,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 13:01:44,260 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 13:01:44,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 13:01:44,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 13:01:44,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 13:01:44,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 13:01:44,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 13:01:44,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 13:01:44,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 13:01:44,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 13:01:44,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 13:01:44,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 13:01:44,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 13:01:44,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 13:01:44,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 13:01:44,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 13:01:44,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 13:01:44,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 13:01:44,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 13:01:44,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 13:01:44,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 13:01:44,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 13:01:44,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 13:01:44,284 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-23 13:01:44,305 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 13:01:44,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 13:01:44,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 13:01:44,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 13:01:44,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 13:01:44,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 13:01:44,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 13:01:44,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 13:01:44,309 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 13:01:44,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 13:01:44,309 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 13:01:44,310 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 13:01:44,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 13:01:44,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 13:01:44,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 13:01:44,310 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 13:01:44,310 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 13:01:44,310 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-23 13:01:44,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 13:01:44,311 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 13:01:44,312 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 13:01:44,312 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 13:01:44,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 13:01:44,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 13:01:44,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 13:01:44,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:01:44,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 13:01:44,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 13:01:44,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 13:01:44,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 13:01:44,313 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe25077175322d8d5e3cefee67a534dcd61077607911040f354db1679589b09 [2022-07-23 13:01:44,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 13:01:44,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 13:01:44,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 13:01:44,508 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 13:01:44,510 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 13:01:44,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-2.i [2022-07-23 13:01:44,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd7594263/d1ba3bbe43af49de82cb769f260b59da/FLAGfc13f4f9e [2022-07-23 13:01:44,966 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 13:01:44,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-2.i [2022-07-23 13:01:44,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd7594263/d1ba3bbe43af49de82cb769f260b59da/FLAGfc13f4f9e [2022-07-23 13:01:45,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd7594263/d1ba3bbe43af49de82cb769f260b59da [2022-07-23 13:01:45,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 13:01:45,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 13:01:45,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 13:01:45,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 13:01:45,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 13:01:45,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:01:45" (1/1) ... [2022-07-23 13:01:45,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@261b3f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:01:45, skipping insertion in model container [2022-07-23 13:01:45,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:01:45" (1/1) ... [2022-07-23 13:01:45,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 13:01:45,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 13:01:45,678 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_SAX_test5-2.i[33021,33034] [2022-07-23 13:01:45,805 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_SAX_test5-2.i[49681,49694] [2022-07-23 13:01:45,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:01:45,833 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-23 13:01:45,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e1f901b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:01:45, skipping insertion in model container [2022-07-23 13:01:45,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 13:01:45,835 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-23 13:01:45,837 INFO L158 Benchmark]: Toolchain (without parser) took 527.15ms. Allocated memory is still 123.7MB. Free memory was 86.7MB in the beginning and 84.2MB in the end (delta: 2.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-23 13:01:45,838 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 79.7MB. Free memory was 36.3MB in the beginning and 36.2MB in the end (delta: 36.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 13:01:45,839 INFO L158 Benchmark]: CACSL2BoogieTranslator took 520.04ms. Allocated memory is still 123.7MB. Free memory was 86.5MB in the beginning and 84.2MB in the end (delta: 2.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-23 13:01:45,841 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 79.7MB. Free memory was 36.3MB in the beginning and 36.2MB in the end (delta: 36.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 520.04ms. Allocated memory is still 123.7MB. Free memory was 86.5MB in the beginning and 84.2MB in the end (delta: 2.3MB). 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_SAX_test5-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1fe25077175322d8d5e3cefee67a534dcd61077607911040f354db1679589b09 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 13:01:47,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 13:01:47,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 13:01:47,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 13:01:47,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 13:01:47,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 13:01:47,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 13:01:47,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 13:01:47,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 13:01:47,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 13:01:47,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 13:01:47,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 13:01:47,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 13:01:47,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 13:01:47,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 13:01:47,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 13:01:47,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 13:01:47,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 13:01:47,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 13:01:47,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 13:01:47,317 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 13:01:47,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 13:01:47,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 13:01:47,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 13:01:47,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 13:01:47,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 13:01:47,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 13:01:47,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 13:01:47,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 13:01:47,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 13:01:47,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 13:01:47,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 13:01:47,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 13:01:47,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 13:01:47,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 13:01:47,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 13:01:47,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 13:01:47,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 13:01:47,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 13:01:47,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 13:01:47,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 13:01:47,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 13:01:47,339 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-23 13:01:47,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 13:01:47,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 13:01:47,359 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 13:01:47,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 13:01:47,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 13:01:47,360 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 13:01:47,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 13:01:47,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 13:01:47,361 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 13:01:47,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 13:01:47,362 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 13:01:47,362 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 13:01:47,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 13:01:47,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 13:01:47,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 13:01:47,362 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 13:01:47,363 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 13:01:47,363 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-23 13:01:47,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 13:01:47,363 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 13:01:47,363 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-23 13:01:47,363 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-23 13:01:47,364 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 13:01:47,364 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 13:01:47,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 13:01:47,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 13:01:47,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 13:01:47,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:01:47,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 13:01:47,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 13:01:47,365 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-23 13:01:47,365 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-23 13:01:47,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-23 13:01:47,365 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe25077175322d8d5e3cefee67a534dcd61077607911040f354db1679589b09 [2022-07-23 13:01:47,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 13:01:47,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 13:01:47,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 13:01:47,626 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 13:01:47,627 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 13:01:47,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-2.i [2022-07-23 13:01:47,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98a01ce37/3cdf117970c54198897040ccb8fe6bda/FLAGf1290e68a [2022-07-23 13:01:48,128 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 13:01:48,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-2.i [2022-07-23 13:01:48,146 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98a01ce37/3cdf117970c54198897040ccb8fe6bda/FLAGf1290e68a [2022-07-23 13:01:48,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98a01ce37/3cdf117970c54198897040ccb8fe6bda [2022-07-23 13:01:48,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 13:01:48,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 13:01:48,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 13:01:48,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 13:01:48,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 13:01:48,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:01:48" (1/1) ... [2022-07-23 13:01:48,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e9c5509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:01:48, skipping insertion in model container [2022-07-23 13:01:48,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:01:48" (1/1) ... [2022-07-23 13:01:48,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 13:01:48,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 13:01:48,454 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_SAX_test5-2.i[33021,33034] [2022-07-23 13:01:48,544 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_SAX_test5-2.i[49681,49694] [2022-07-23 13:01:48,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:01:48,571 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-23 13:01:48,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 13:01:48,607 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_SAX_test5-2.i[33021,33034] [2022-07-23 13:01:48,714 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_SAX_test5-2.i[49681,49694] [2022-07-23 13:01:48,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:01:48,745 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 13:01:48,770 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_SAX_test5-2.i[33021,33034] [2022-07-23 13:01:48,834 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_SAX_test5-2.i[49681,49694] [2022-07-23 13:01:48,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:01:48,883 INFO L208 MainTranslator]: Completed translation [2022-07-23 13:01:48,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:01:48 WrapperNode [2022-07-23 13:01:48,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 13:01:48,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 13:01:48,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 13:01:48,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 13:01:48,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:01:48" (1/1) ... [2022-07-23 13:01:48,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:01:48" (1/1) ... [2022-07-23 13:01:48,985 INFO L137 Inliner]: procedures = 180, calls = 439, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1578 [2022-07-23 13:01:48,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 13:01:48,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 13:01:48,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 13:01:48,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 13:01:48,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:01:48" (1/1) ... [2022-07-23 13:01:48,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:01:48" (1/1) ... [2022-07-23 13:01:49,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:01:48" (1/1) ... [2022-07-23 13:01:49,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:01:48" (1/1) ... [2022-07-23 13:01:49,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:01:48" (1/1) ... [2022-07-23 13:01:49,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:01:48" (1/1) ... [2022-07-23 13:01:49,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:01:48" (1/1) ... [2022-07-23 13:01:49,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 13:01:49,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 13:01:49,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 13:01:49,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 13:01:49,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:01:48" (1/1) ... [2022-07-23 13:01:49,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:01:49,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:01:49,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-23 13:01:49,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-23 13:01:49,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-23 13:01:49,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-23 13:01:49,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-23 13:01:49,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-23 13:01:49,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-23 13:01:49,158 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-23 13:01:49,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 13:01:49,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 13:01:49,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 13:01:49,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 13:01:49,158 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-23 13:01:49,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 13:01:49,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 13:01:49,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-23 13:01:49,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-23 13:01:49,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 13:01:49,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 13:01:49,381 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 13:01:49,382 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 13:01:49,385 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-23 13:01:53,377 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 13:01:53,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 13:01:53,391 INFO L299 CfgBuilder]: Removed 92 assume(true) statements. [2022-07-23 13:01:53,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:01:53 BoogieIcfgContainer [2022-07-23 13:01:53,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 13:01:53,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 13:01:53,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 13:01:53,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 13:01:53,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:01:48" (1/3) ... [2022-07-23 13:01:53,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467549cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:01:53, skipping insertion in model container [2022-07-23 13:01:53,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:01:48" (2/3) ... [2022-07-23 13:01:53,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467549cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:01:53, skipping insertion in model container [2022-07-23 13:01:53,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:01:53" (3/3) ... [2022-07-23 13:01:53,401 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test5-2.i [2022-07-23 13:01:53,413 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 13:01:53,414 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 834 error locations. [2022-07-23 13:01:53,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 13:01:53,485 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@57bc0753, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@12af3f2b [2022-07-23 13:01:53,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 834 error locations. [2022-07-23 13:01:53,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 1655 states, 813 states have (on average 2.2484624846248464) internal successors, (1828), 1646 states have internal predecessors, (1828), 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) [2022-07-23 13:01:53,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-23 13:01:53,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:01:53,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-23 13:01:53,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:01:53,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:01:53,500 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2022-07-23 13:01:53,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:01:53,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127056143] [2022-07-23 13:01:53,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:01:53,508 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:01:53,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:01:53,509 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:01:53,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-23 13:01:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:01:53,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-23 13:01:53,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:01:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:01:53,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:01:53,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:01:53,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127056143] [2022-07-23 13:01:53,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127056143] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:01:53,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:01:53,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:01:53,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802417623] [2022-07-23 13:01:53,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:01:53,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-23 13:01:53,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:01:53,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-23 13:01:53,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 13:01:53,715 INFO L87 Difference]: Start difference. First operand has 1655 states, 813 states have (on average 2.2484624846248464) internal successors, (1828), 1646 states have internal predecessors, (1828), 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) [2022-07-23 13:01:53,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:01:53,764 INFO L93 Difference]: Finished difference Result 1637 states and 1731 transitions. [2022-07-23 13:01:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 13:01:53,770 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-23 13:01:53,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:01:53,787 INFO L225 Difference]: With dead ends: 1637 [2022-07-23 13:01:53,787 INFO L226 Difference]: Without dead ends: 1635 [2022-07-23 13:01:53,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 13:01:53,791 INFO L413 NwaCegarLoop]: 1731 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, 1731 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:01:53,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:01:53,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2022-07-23 13:01:53,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1635. [2022-07-23 13:01:53,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 804 states have (on average 2.123134328358209) internal successors, (1707), 1626 states have internal predecessors, (1707), 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) [2022-07-23 13:01:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 1729 transitions. [2022-07-23 13:01:53,860 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 1729 transitions. Word has length 5 [2022-07-23 13:01:53,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:01:53,861 INFO L495 AbstractCegarLoop]: Abstraction has 1635 states and 1729 transitions. [2022-07-23 13:01:53,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:01:53,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 1729 transitions. [2022-07-23 13:01:53,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-23 13:01:53,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:01:53,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-23 13:01:53,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-23 13:01:54,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:01:54,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:01:54,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:01:54,069 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2022-07-23 13:01:54,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:01:54,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574367098] [2022-07-23 13:01:54,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:01:54,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:01:54,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:01:54,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:01:54,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-23 13:01:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:01:54,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 13:01:54,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:01:54,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 13:01:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:01:54,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:01:54,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:01:54,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574367098] [2022-07-23 13:01:54,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574367098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:01:54,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:01:54,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:01:54,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110452303] [2022-07-23 13:01:54,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:01:54,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:01:54,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:01:54,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:01:54,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:01:54,291 INFO L87 Difference]: Start difference. First operand 1635 states and 1729 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:01:56,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:01:56,239 INFO L93 Difference]: Finished difference Result 1891 states and 2028 transitions. [2022-07-23 13:01:56,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:01:56,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-23 13:01:56,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:01:56,244 INFO L225 Difference]: With dead ends: 1891 [2022-07-23 13:01:56,244 INFO L226 Difference]: Without dead ends: 1891 [2022-07-23 13:01:56,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:01:56,245 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 1369 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-23 13:01:56,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 1533 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-23 13:01:56,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2022-07-23 13:01:56,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1620. [2022-07-23 13:01:56,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 880 states have (on average 1.9897727272727272) internal successors, (1751), 1611 states have internal predecessors, (1751), 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) [2022-07-23 13:01:56,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 1773 transitions. [2022-07-23 13:01:56,274 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 1773 transitions. Word has length 5 [2022-07-23 13:01:56,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:01:56,274 INFO L495 AbstractCegarLoop]: Abstraction has 1620 states and 1773 transitions. [2022-07-23 13:01:56,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:01:56,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 1773 transitions. [2022-07-23 13:01:56,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-23 13:01:56,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:01:56,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-23 13:01:56,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-23 13:01:56,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:01:56,484 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:01:56,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:01:56,484 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2022-07-23 13:01:56,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:01:56,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960077437] [2022-07-23 13:01:56,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:01:56,485 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:01:56,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:01:56,487 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:01:56,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-23 13:01:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:01:56,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 13:01:56,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:01:56,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 13:01:56,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:01:56,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:01:56,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:01:56,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960077437] [2022-07-23 13:01:56,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960077437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:01:56,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:01:56,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:01:56,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957390104] [2022-07-23 13:01:56,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:01:56,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:01:56,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:01:56,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:01:56,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:01:56,632 INFO L87 Difference]: Start difference. First operand 1620 states and 1773 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:01:59,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:01:59,355 INFO L93 Difference]: Finished difference Result 2140 states and 2343 transitions. [2022-07-23 13:01:59,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:01:59,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-23 13:01:59,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:01:59,361 INFO L225 Difference]: With dead ends: 2140 [2022-07-23 13:01:59,361 INFO L226 Difference]: Without dead ends: 2140 [2022-07-23 13:01:59,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:01:59,362 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 741 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-23 13:01:59,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 2268 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-23 13:01:59,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2022-07-23 13:01:59,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1776. [2022-07-23 13:01:59,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1776 states, 1046 states have (on average 1.9665391969407267) internal successors, (2057), 1767 states have internal predecessors, (2057), 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) [2022-07-23 13:01:59,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2079 transitions. [2022-07-23 13:01:59,393 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2079 transitions. Word has length 5 [2022-07-23 13:01:59,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:01:59,393 INFO L495 AbstractCegarLoop]: Abstraction has 1776 states and 2079 transitions. [2022-07-23 13:01:59,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:01:59,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2079 transitions. [2022-07-23 13:01:59,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-23 13:01:59,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:01:59,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-23 13:01:59,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-23 13:01:59,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:01:59,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:01:59,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:01:59,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2022-07-23 13:01:59,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:01:59,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136567351] [2022-07-23 13:01:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:01:59,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:01:59,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:01:59,604 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:01:59,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-23 13:01:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:01:59,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 13:01:59,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:01:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:01:59,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:01:59,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:01:59,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136567351] [2022-07-23 13:01:59,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136567351] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:01:59,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:01:59,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:01:59,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818861495] [2022-07-23 13:01:59,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:01:59,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:01:59,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:01:59,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:01:59,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:01:59,733 INFO L87 Difference]: Start difference. First operand 1776 states and 2079 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:01:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:01:59,846 INFO L93 Difference]: Finished difference Result 3336 states and 3931 transitions. [2022-07-23 13:01:59,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:01:59,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-23 13:01:59,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:01:59,861 INFO L225 Difference]: With dead ends: 3336 [2022-07-23 13:01:59,861 INFO L226 Difference]: Without dead ends: 3336 [2022-07-23 13:01:59,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:01:59,863 INFO L413 NwaCegarLoop]: 1854 mSDtfsCounter, 1377 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 3471 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 [2022-07-23 13:01:59,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 3471 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:01:59,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2022-07-23 13:01:59,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 1778. [2022-07-23 13:01:59,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1048 states have (on average 1.9646946564885497) internal successors, (2059), 1769 states have internal predecessors, (2059), 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) [2022-07-23 13:01:59,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2081 transitions. [2022-07-23 13:01:59,902 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2081 transitions. Word has length 6 [2022-07-23 13:01:59,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:01:59,903 INFO L495 AbstractCegarLoop]: Abstraction has 1778 states and 2081 transitions. [2022-07-23 13:01:59,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:01:59,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2081 transitions. [2022-07-23 13:01:59,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-23 13:01:59,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:01:59,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:01:59,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-23 13:02:00,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:02:00,128 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:02:00,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:02:00,129 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2022-07-23 13:02:00,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:02:00,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180457507] [2022-07-23 13:02:00,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:02:00,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:02:00,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:02:00,132 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:02:00,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-23 13:02:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:02:00,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 13:02:00,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:02:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:00,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:02:00,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:02:00,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180457507] [2022-07-23 13:02:00,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180457507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:02:00,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:02:00,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:02:00,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851089681] [2022-07-23 13:02:00,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:02:00,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:02:00,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:02:00,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:02:00,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:02:00,278 INFO L87 Difference]: Start difference. First operand 1778 states and 2081 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:00,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:02:00,306 INFO L93 Difference]: Finished difference Result 1742 states and 2044 transitions. [2022-07-23 13:02:00,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:02:00,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-23 13:02:00,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:02:00,311 INFO L225 Difference]: With dead ends: 1742 [2022-07-23 13:02:00,311 INFO L226 Difference]: Without dead ends: 1742 [2022-07-23 13:02:00,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:02:00,312 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 1550 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:02:00,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1561 Valid, 1608 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:02:00,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2022-07-23 13:02:00,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1736. [2022-07-23 13:02:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1736 states, 1030 states have (on average 1.9572815533980583) internal successors, (2016), 1727 states have internal predecessors, (2016), 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) [2022-07-23 13:02:00,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2038 transitions. [2022-07-23 13:02:00,336 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2038 transitions. Word has length 11 [2022-07-23 13:02:00,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:02:00,336 INFO L495 AbstractCegarLoop]: Abstraction has 1736 states and 2038 transitions. [2022-07-23 13:02:00,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:00,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2038 transitions. [2022-07-23 13:02:00,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-23 13:02:00,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:02:00,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:02:00,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-23 13:02:00,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:02:00,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:02:00,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:02:00,544 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2022-07-23 13:02:00,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:02:00,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471052518] [2022-07-23 13:02:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:02:00,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:02:00,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:02:00,545 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:02:00,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-23 13:02:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:02:00,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 13:02:00,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:02:00,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:00,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:02:00,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:02:00,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471052518] [2022-07-23 13:02:00,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471052518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:02:00,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:02:00,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:02:00,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029574419] [2022-07-23 13:02:00,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:02:00,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:02:00,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:02:00,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:02:00,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:02:00,704 INFO L87 Difference]: Start difference. First operand 1736 states and 2038 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:00,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:02:00,758 INFO L93 Difference]: Finished difference Result 1721 states and 2016 transitions. [2022-07-23 13:02:00,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:02:00,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-23 13:02:00,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:02:00,763 INFO L225 Difference]: With dead ends: 1721 [2022-07-23 13:02:00,764 INFO L226 Difference]: Without dead ends: 1721 [2022-07-23 13:02:00,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:02:00,765 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1521 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:02:00,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 3091 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:02:00,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2022-07-23 13:02:00,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1714. [2022-07-23 13:02:00,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1022 states have (on average 1.9442270058708415) internal successors, (1987), 1705 states have internal predecessors, (1987), 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) [2022-07-23 13:02:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2009 transitions. [2022-07-23 13:02:00,790 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2009 transitions. Word has length 13 [2022-07-23 13:02:00,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:02:00,791 INFO L495 AbstractCegarLoop]: Abstraction has 1714 states and 2009 transitions. [2022-07-23 13:02:00,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2009 transitions. [2022-07-23 13:02:00,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-23 13:02:00,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:02:00,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:02:00,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-23 13:02:01,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:02:01,014 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:02:01,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:02:01,015 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2022-07-23 13:02:01,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:02:01,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720636235] [2022-07-23 13:02:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:02:01,015 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:02:01,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:02:01,017 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:02:01,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-23 13:02:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:02:01,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 13:02:01,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:02:01,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 13:02:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:01,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:02:01,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:02:01,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720636235] [2022-07-23 13:02:01,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720636235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:02:01,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:02:01,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:02:01,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151514494] [2022-07-23 13:02:01,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:02:01,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:02:01,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:02:01,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:02:01,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:02:01,213 INFO L87 Difference]: Start difference. First operand 1714 states and 2009 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:03,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:02:03,977 INFO L93 Difference]: Finished difference Result 2759 states and 3092 transitions. [2022-07-23 13:02:03,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:02:03,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-23 13:02:03,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:02:03,984 INFO L225 Difference]: With dead ends: 2759 [2022-07-23 13:02:03,984 INFO L226 Difference]: Without dead ends: 2759 [2022-07-23 13:02:03,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:02:03,985 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 3206 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3214 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-23 13:02:03,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3214 Valid, 1886 Invalid, 1757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-23 13:02:03,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states. [2022-07-23 13:02:04,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2759 to 1710. [2022-07-23 13:02:04,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1022 states have (on average 1.9403131115459882) internal successors, (1983), 1701 states have internal predecessors, (1983), 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) [2022-07-23 13:02:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2005 transitions. [2022-07-23 13:02:04,010 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2005 transitions. Word has length 27 [2022-07-23 13:02:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:02:04,011 INFO L495 AbstractCegarLoop]: Abstraction has 1710 states and 2005 transitions. [2022-07-23 13:02:04,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2005 transitions. [2022-07-23 13:02:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-23 13:02:04,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:02:04,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:02:04,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-23 13:02:04,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:02:04,220 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:02:04,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:02:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2022-07-23 13:02:04,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:02:04,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359130864] [2022-07-23 13:02:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:02:04,221 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:02:04,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:02:04,222 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:02:04,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-23 13:02:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:02:04,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 13:02:04,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:02:04,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 13:02:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:04,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:02:04,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:02:04,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359130864] [2022-07-23 13:02:04,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359130864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:02:04,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:02:04,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:02:04,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930992174] [2022-07-23 13:02:04,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:02:04,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:02:04,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:02:04,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:02:04,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:02:04,447 INFO L87 Difference]: Start difference. First operand 1710 states and 2005 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:07,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:02:07,733 INFO L93 Difference]: Finished difference Result 2278 states and 2483 transitions. [2022-07-23 13:02:07,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:02:07,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-23 13:02:07,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:02:07,757 INFO L225 Difference]: With dead ends: 2278 [2022-07-23 13:02:07,757 INFO L226 Difference]: Without dead ends: 2278 [2022-07-23 13:02:07,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:02:07,758 INFO L413 NwaCegarLoop]: 1178 mSDtfsCounter, 1501 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 1871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:02:07,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 2603 Invalid, 1871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-23 13:02:07,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2022-07-23 13:02:07,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 1706. [2022-07-23 13:02:07,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1706 states, 1022 states have (on average 1.936399217221135) internal successors, (1979), 1697 states have internal predecessors, (1979), 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) [2022-07-23 13:02:07,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2001 transitions. [2022-07-23 13:02:07,780 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2001 transitions. Word has length 27 [2022-07-23 13:02:07,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:02:07,780 INFO L495 AbstractCegarLoop]: Abstraction has 1706 states and 2001 transitions. [2022-07-23 13:02:07,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:07,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2001 transitions. [2022-07-23 13:02:07,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-23 13:02:07,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:02:07,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:02:07,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-23 13:02:07,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:02:07,989 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:02:07,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:02:07,990 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2022-07-23 13:02:07,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:02:07,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285425750] [2022-07-23 13:02:07,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:02:07,990 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:02:07,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:02:07,991 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:02:07,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-23 13:02:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:02:08,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 13:02:08,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:02:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:08,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:02:08,188 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:02:08,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285425750] [2022-07-23 13:02:08,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285425750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:02:08,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:02:08,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:02:08,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389662796] [2022-07-23 13:02:08,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:02:08,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:02:08,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:02:08,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:02:08,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:02:08,190 INFO L87 Difference]: Start difference. First operand 1706 states and 2001 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:08,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:02:08,229 INFO L93 Difference]: Finished difference Result 1706 states and 1997 transitions. [2022-07-23 13:02:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:02:08,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-07-23 13:02:08,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:02:08,234 INFO L225 Difference]: With dead ends: 1706 [2022-07-23 13:02:08,234 INFO L226 Difference]: Without dead ends: 1706 [2022-07-23 13:02:08,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:02:08,235 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 1497 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:02:08,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 3069 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:02:08,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2022-07-23 13:02:08,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1700. [2022-07-23 13:02:08,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1016 states have (on average 1.937992125984252) internal successors, (1969), 1691 states have internal predecessors, (1969), 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) [2022-07-23 13:02:08,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 1991 transitions. [2022-07-23 13:02:08,254 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 1991 transitions. Word has length 42 [2022-07-23 13:02:08,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:02:08,254 INFO L495 AbstractCegarLoop]: Abstraction has 1700 states and 1991 transitions. [2022-07-23 13:02:08,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:08,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 1991 transitions. [2022-07-23 13:02:08,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-23 13:02:08,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:02:08,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:02:08,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-23 13:02:08,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:02:08,467 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:02:08,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:02:08,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2022-07-23 13:02:08,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:02:08,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839187074] [2022-07-23 13:02:08,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:02:08,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:02:08,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:02:08,470 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:02:08,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-23 13:02:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:02:08,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 13:02:08,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:02:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:08,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:02:08,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:02:08,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839187074] [2022-07-23 13:02:08,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839187074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:02:08,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:02:08,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:02:08,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730290312] [2022-07-23 13:02:08,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:02:08,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:02:08,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:02:08,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:02:08,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:02:08,804 INFO L87 Difference]: Start difference. First operand 1700 states and 1991 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:08,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:02:08,951 INFO L93 Difference]: Finished difference Result 1941 states and 2241 transitions. [2022-07-23 13:02:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:02:08,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-07-23 13:02:08,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:02:08,956 INFO L225 Difference]: With dead ends: 1941 [2022-07-23 13:02:08,956 INFO L226 Difference]: Without dead ends: 1941 [2022-07-23 13:02:08,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:02:08,957 INFO L413 NwaCegarLoop]: 1608 mSDtfsCounter, 269 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:02:08,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 3012 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:02:08,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2022-07-23 13:02:08,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1746. [2022-07-23 13:02:08,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1062 states have (on average 1.8973634651600753) internal successors, (2015), 1737 states have internal predecessors, (2015), 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) [2022-07-23 13:02:08,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2037 transitions. [2022-07-23 13:02:08,974 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2037 transitions. Word has length 50 [2022-07-23 13:02:08,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:02:08,975 INFO L495 AbstractCegarLoop]: Abstraction has 1746 states and 2037 transitions. [2022-07-23 13:02:08,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:08,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2037 transitions. [2022-07-23 13:02:08,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-23 13:02:08,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:02:08,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:02:08,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-23 13:02:09,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:02:09,190 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:02:09,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:02:09,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2022-07-23 13:02:09,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:02:09,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985618747] [2022-07-23 13:02:09,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:02:09,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:02:09,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:02:09,193 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:02:09,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-23 13:02:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:02:09,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 13:02:09,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:02:09,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 13:02:09,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 13:02:09,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 13:02:09,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-23 13:02:09,735 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 13:02:09,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-23 13:02:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:09,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:02:09,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:02:09,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985618747] [2022-07-23 13:02:09,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985618747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:02:09,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:02:09,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:02:09,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170932692] [2022-07-23 13:02:09,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:02:09,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:02:09,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:02:09,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:02:09,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:02:09,747 INFO L87 Difference]: Start difference. First operand 1746 states and 2037 transitions. Second operand has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:12,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:02:12,167 INFO L93 Difference]: Finished difference Result 1933 states and 2208 transitions. [2022-07-23 13:02:12,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:02:12,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-07-23 13:02:12,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:02:12,173 INFO L225 Difference]: With dead ends: 1933 [2022-07-23 13:02:12,173 INFO L226 Difference]: Without dead ends: 1933 [2022-07-23 13:02:12,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:02:12,174 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1569 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-23 13:02:12,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 984 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-23 13:02:12,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2022-07-23 13:02:12,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1496. [2022-07-23 13:02:12,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 896 states have (on average 1.8013392857142858) internal successors, (1614), 1487 states have internal predecessors, (1614), 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) [2022-07-23 13:02:12,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1636 transitions. [2022-07-23 13:02:12,189 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1636 transitions. Word has length 53 [2022-07-23 13:02:12,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:02:12,189 INFO L495 AbstractCegarLoop]: Abstraction has 1496 states and 1636 transitions. [2022-07-23 13:02:12,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:12,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1636 transitions. [2022-07-23 13:02:12,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-23 13:02:12,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:02:12,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:02:12,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-23 13:02:12,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:02:12,400 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:02:12,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:02:12,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2022-07-23 13:02:12,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:02:12,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829116938] [2022-07-23 13:02:12,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:02:12,401 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:02:12,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:02:12,402 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:02:12,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-23 13:02:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:02:12,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 13:02:12,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:02:12,639 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 13:02:12,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-23 13:02:12,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-07-23 13:02:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:12,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:02:12,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:02:12,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829116938] [2022-07-23 13:02:12,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829116938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:02:12,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:02:12,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:02:12,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250263514] [2022-07-23 13:02:12,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:02:12,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:02:12,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:02:12,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:02:12,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:02:12,670 INFO L87 Difference]: Start difference. First operand 1496 states and 1636 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:14,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:02:14,913 INFO L93 Difference]: Finished difference Result 1495 states and 1635 transitions. [2022-07-23 13:02:14,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 13:02:14,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-23 13:02:14,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:02:14,917 INFO L225 Difference]: With dead ends: 1495 [2022-07-23 13:02:14,918 INFO L226 Difference]: Without dead ends: 1495 [2022-07-23 13:02:14,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-23 13:02:14,918 INFO L413 NwaCegarLoop]: 1449 mSDtfsCounter, 4 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3704 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:02:14,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3704 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-23 13:02:14,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2022-07-23 13:02:14,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1495. [2022-07-23 13:02:14,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 896 states have (on average 1.8002232142857142) internal successors, (1613), 1486 states have internal predecessors, (1613), 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) [2022-07-23 13:02:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 1635 transitions. [2022-07-23 13:02:14,935 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 1635 transitions. Word has length 58 [2022-07-23 13:02:14,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:02:14,935 INFO L495 AbstractCegarLoop]: Abstraction has 1495 states and 1635 transitions. [2022-07-23 13:02:14,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:14,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 1635 transitions. [2022-07-23 13:02:14,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-23 13:02:14,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:02:14,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:02:14,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-23 13:02:15,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:02:15,148 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:02:15,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:02:15,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2022-07-23 13:02:15,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:02:15,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88832858] [2022-07-23 13:02:15,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:02:15,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:02:15,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:02:15,150 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:02:15,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-23 13:02:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:02:15,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-23 13:02:15,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:02:15,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 13:02:15,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-23 13:02:15,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-23 13:02:15,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-07-23 13:02:15,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-23 13:02:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:15,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:02:15,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:02:15,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88832858] [2022-07-23 13:02:15,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88832858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:02:15,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:02:15,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:02:15,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108696459] [2022-07-23 13:02:15,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:02:15,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:02:15,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:02:15,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:02:15,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:02:15,462 INFO L87 Difference]: Start difference. First operand 1495 states and 1635 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:18,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:02:18,371 INFO L93 Difference]: Finished difference Result 1494 states and 1634 transitions. [2022-07-23 13:02:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 13:02:18,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-23 13:02:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:02:18,375 INFO L225 Difference]: With dead ends: 1494 [2022-07-23 13:02:18,375 INFO L226 Difference]: Without dead ends: 1494 [2022-07-23 13:02:18,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-23 13:02:18,375 INFO L413 NwaCegarLoop]: 1449 mSDtfsCounter, 2 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3750 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-23 13:02:18,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3750 Invalid, 2050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2049 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-23 13:02:18,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2022-07-23 13:02:18,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1494. [2022-07-23 13:02:18,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 895 states have (on average 1.8011173184357543) internal successors, (1612), 1485 states have internal predecessors, (1612), 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) [2022-07-23 13:02:18,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1634 transitions. [2022-07-23 13:02:18,388 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1634 transitions. Word has length 58 [2022-07-23 13:02:18,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:02:18,388 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 1634 transitions. [2022-07-23 13:02:18,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:02:18,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1634 transitions. [2022-07-23 13:02:18,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-23 13:02:18,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:02:18,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:02:18,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-23 13:02:18,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:02:18,599 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:02:18,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:02:18,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2015085822, now seen corresponding path program 1 times [2022-07-23 13:02:18,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:02:18,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146452489] [2022-07-23 13:02:18,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:02:18,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:02:18,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:02:18,602 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:02:18,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-23 13:02:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:02:18,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 13:02:18,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:02:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:18,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:02:18,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:02:18,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146452489] [2022-07-23 13:02:18,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146452489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:02:18,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:02:18,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:02:18,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525034474] [2022-07-23 13:02:18,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:02:18,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:02:18,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:02:18,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:02:18,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:02:18,847 INFO L87 Difference]: Start difference. First operand 1494 states and 1634 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:02:18,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:02:18,888 INFO L93 Difference]: Finished difference Result 1497 states and 1639 transitions. [2022-07-23 13:02:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:02:18,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2022-07-23 13:02:18,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:02:18,909 INFO L225 Difference]: With dead ends: 1497 [2022-07-23 13:02:18,909 INFO L226 Difference]: Without dead ends: 1497 [2022-07-23 13:02:18,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:02:18,910 INFO L413 NwaCegarLoop]: 1448 mSDtfsCounter, 2 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4336 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:02:18,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4336 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:02:18,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2022-07-23 13:02:18,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1497. [2022-07-23 13:02:18,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 897 states have (on average 1.8004459308807135) internal successors, (1615), 1488 states have internal predecessors, (1615), 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) [2022-07-23 13:02:18,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 1639 transitions. [2022-07-23 13:02:18,940 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 1639 transitions. Word has length 66 [2022-07-23 13:02:18,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:02:18,941 INFO L495 AbstractCegarLoop]: Abstraction has 1497 states and 1639 transitions. [2022-07-23 13:02:18,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:02:18,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 1639 transitions. [2022-07-23 13:02:18,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-23 13:02:18,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:02:18,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:02:18,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-23 13:02:19,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:02:19,151 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:02:19,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:02:19,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1745990217, now seen corresponding path program 1 times [2022-07-23 13:02:19,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:02:19,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091704082] [2022-07-23 13:02:19,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:02:19,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:02:19,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:02:19,153 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:02:19,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-23 13:02:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:02:19,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 13:02:19,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:02:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:19,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:02:19,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:19,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:02:19,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091704082] [2022-07-23 13:02:19,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091704082] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:02:19,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:02:19,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-23 13:02:19,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635154739] [2022-07-23 13:02:19,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:02:19,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 13:02:19,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:02:19,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 13:02:19,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-23 13:02:19,455 INFO L87 Difference]: Start difference. First operand 1497 states and 1639 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 13:02:19,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:02:19,611 INFO L93 Difference]: Finished difference Result 1509 states and 1657 transitions. [2022-07-23 13:02:19,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 13:02:19,612 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2022-07-23 13:02:19,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:02:19,615 INFO L225 Difference]: With dead ends: 1509 [2022-07-23 13:02:19,615 INFO L226 Difference]: Without dead ends: 1509 [2022-07-23 13:02:19,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-07-23 13:02:19,616 INFO L413 NwaCegarLoop]: 1448 mSDtfsCounter, 20 mSDsluCounter, 4327 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 5775 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:02:19,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 5775 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:02:19,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2022-07-23 13:02:19,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1507. [2022-07-23 13:02:19,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 906 states have (on average 1.7991169977924946) internal successors, (1630), 1497 states have internal predecessors, (1630), 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) [2022-07-23 13:02:19,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1654 transitions. [2022-07-23 13:02:19,629 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1654 transitions. Word has length 67 [2022-07-23 13:02:19,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:02:19,629 INFO L495 AbstractCegarLoop]: Abstraction has 1507 states and 1654 transitions. [2022-07-23 13:02:19,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 13:02:19,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1654 transitions. [2022-07-23 13:02:19,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-23 13:02:19,630 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:02:19,630 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:02:19,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-23 13:02:19,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:02:19,839 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:02:19,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:02:19,840 INFO L85 PathProgramCache]: Analyzing trace with hash 483699518, now seen corresponding path program 2 times [2022-07-23 13:02:19,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:02:19,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304580489] [2022-07-23 13:02:19,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:02:19,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:02:19,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:02:19,841 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:02:19,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-23 13:02:20,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:02:20,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:02:20,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 13:02:20,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:02:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:20,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:02:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:20,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:02:20,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304580489] [2022-07-23 13:02:20,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304580489] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:02:20,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:02:20,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-23 13:02:20,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492714187] [2022-07-23 13:02:20,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:02:20,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-23 13:02:20,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:02:20,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-23 13:02:20,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-23 13:02:20,455 INFO L87 Difference]: Start difference. First operand 1507 states and 1654 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 13:02:21,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:02:21,004 INFO L93 Difference]: Finished difference Result 1528 states and 1686 transitions. [2022-07-23 13:02:21,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-23 13:02:21,005 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2022-07-23 13:02:21,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:02:21,007 INFO L225 Difference]: With dead ends: 1528 [2022-07-23 13:02:21,007 INFO L226 Difference]: Without dead ends: 1524 [2022-07-23 13:02:21,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2022-07-23 13:02:21,008 INFO L413 NwaCegarLoop]: 1451 mSDtfsCounter, 43 mSDsluCounter, 12993 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 14444 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 13:02:21,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 14444 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 13:02:21,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2022-07-23 13:02:21,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1516. [2022-07-23 13:02:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 915 states have (on average 1.794535519125683) internal successors, (1642), 1506 states have internal predecessors, (1642), 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) [2022-07-23 13:02:21,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 1666 transitions. [2022-07-23 13:02:21,044 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 1666 transitions. Word has length 70 [2022-07-23 13:02:21,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:02:21,044 INFO L495 AbstractCegarLoop]: Abstraction has 1516 states and 1666 transitions. [2022-07-23 13:02:21,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 13:02:21,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 1666 transitions. [2022-07-23 13:02:21,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-23 13:02:21,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:02:21,048 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:02:21,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-23 13:02:21,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:02:21,261 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:02:21,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:02:21,261 INFO L85 PathProgramCache]: Analyzing trace with hash 436758686, now seen corresponding path program 3 times [2022-07-23 13:02:21,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:02:21,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838665400] [2022-07-23 13:02:21,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 13:02:21,262 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:02:21,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:02:21,263 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:02:21,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-23 13:02:21,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-23 13:02:21,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:02:21,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-23 13:02:21,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:02:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:21,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:02:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:22,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:02:22,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838665400] [2022-07-23 13:02:22,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838665400] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:02:22,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:02:22,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-23 13:02:22,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018074116] [2022-07-23 13:02:22,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:02:22,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-23 13:02:22,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:02:22,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-23 13:02:22,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-07-23 13:02:22,522 INFO L87 Difference]: Start difference. First operand 1516 states and 1666 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 13:02:25,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:02:25,097 INFO L93 Difference]: Finished difference Result 1558 states and 1742 transitions. [2022-07-23 13:02:25,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-23 13:02:25,098 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2022-07-23 13:02:25,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:02:25,101 INFO L225 Difference]: With dead ends: 1558 [2022-07-23 13:02:25,101 INFO L226 Difference]: Without dead ends: 1552 [2022-07-23 13:02:25,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2022-07-23 13:02:25,102 INFO L413 NwaCegarLoop]: 1455 mSDtfsCounter, 138 mSDsluCounter, 17387 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 18842 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-23 13:02:25,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 18842 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-23 13:02:25,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2022-07-23 13:02:25,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1534. [2022-07-23 13:02:25,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 933 states have (on average 1.7845659163987138) internal successors, (1665), 1524 states have internal predecessors, (1665), 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) [2022-07-23 13:02:25,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 1689 transitions. [2022-07-23 13:02:25,117 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 1689 transitions. Word has length 76 [2022-07-23 13:02:25,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:02:25,117 INFO L495 AbstractCegarLoop]: Abstraction has 1534 states and 1689 transitions. [2022-07-23 13:02:25,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 13:02:25,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 1689 transitions. [2022-07-23 13:02:25,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-23 13:02:25,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:02:25,118 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:02:25,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-23 13:02:25,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:02:25,321 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:02:25,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:02:25,321 INFO L85 PathProgramCache]: Analyzing trace with hash -357348514, now seen corresponding path program 4 times [2022-07-23 13:02:25,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:02:25,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777288454] [2022-07-23 13:02:25,322 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 13:02:25,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:02:25,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:02:25,323 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:02:25,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-23 13:02:25,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 13:02:25,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:02:25,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-23 13:02:25,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:02:25,893 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:25,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:02:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:02:27,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:02:27,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777288454] [2022-07-23 13:02:27,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777288454] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:02:27,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:02:27,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-07-23 13:02:27,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658631044] [2022-07-23 13:02:27,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:02:27,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-23 13:02:27,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:02:27,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-23 13:02:27,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2022-07-23 13:02:27,139 INFO L87 Difference]: Start difference. First operand 1534 states and 1689 transitions. Second operand has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 13:02:36,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:02:36,987 INFO L93 Difference]: Finished difference Result 1614 states and 1822 transitions. [2022-07-23 13:02:36,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-07-23 13:02:36,987 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 88 [2022-07-23 13:02:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:02:36,990 INFO L225 Difference]: With dead ends: 1614 [2022-07-23 13:02:36,990 INFO L226 Difference]: Without dead ends: 1610 [2022-07-23 13:02:36,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2022-07-23 13:02:36,993 INFO L413 NwaCegarLoop]: 1468 mSDtfsCounter, 409 mSDsluCounter, 39413 mSDsCounter, 0 mSdLazyCounter, 3178 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 40881 SdHoareTripleChecker+Invalid, 3624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 3178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-23 13:02:36,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 40881 Invalid, 3624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 3178 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-23 13:02:36,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2022-07-23 13:02:37,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1568. [2022-07-23 13:02:37,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 967 states have (on average 1.7693898655635987) internal successors, (1711), 1558 states have internal predecessors, (1711), 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) [2022-07-23 13:02:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 1735 transitions. [2022-07-23 13:02:37,013 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 1735 transitions. Word has length 88 [2022-07-23 13:02:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:02:37,014 INFO L495 AbstractCegarLoop]: Abstraction has 1568 states and 1735 transitions. [2022-07-23 13:02:37,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 13:02:37,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 1735 transitions. [2022-07-23 13:02:37,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-23 13:02:37,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:02:37,015 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:02:37,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-07-23 13:02:37,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 13:02:37,227 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:02:37,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:02:37,227 INFO L85 PathProgramCache]: Analyzing trace with hash 182176190, now seen corresponding path program 5 times [2022-07-23 13:02:37,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:02:37,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025929798] [2022-07-23 13:02:37,228 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 13:02:37,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:02:37,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:02:37,229 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:02:37,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-23 13:02:38,395 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-07-23 13:02:38,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:02:38,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 59 conjunts are in the unsatisfiable core [2022-07-23 13:02:38,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:02:38,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 13:02:38,513 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-23 13:02:38,513 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 [2022-07-23 13:02:38,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-23 13:02:38,585 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 [2022-07-23 13:02:38,924 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_1612 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1612) |c_#memory_$Pointer$.base|))) is different from true [2022-07-23 13:02:38,935 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_1613 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1613)))) is different from true [2022-07-23 13:02:39,487 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_1638 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1638)))) is different from true [2022-07-23 13:02:39,623 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 13:02:39,623 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 [2022-07-23 13:02:39,652 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 [2022-07-23 13:02:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 820 trivial. 129 not checked. [2022-07-23 13:02:39,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:02:39,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:02:39,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025929798] [2022-07-23 13:02:39,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025929798] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:02:39,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1510508082] [2022-07-23 13:02:39,887 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 13:02:39,887 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-23 13:02:39,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-23 13:02:39,888 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-23 13:02:39,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-07-23 13:04:12,630 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-07-23 13:04:12,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:04:12,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-23 13:04:12,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:04:12,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 13:04:12,901 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-23 13:04:12,901 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 [2022-07-23 13:04:12,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-23 13:04:12,948 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 [2022-07-23 13:04:13,126 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2055 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2055) |c_#memory_$Pointer$.base|))) is different from true [2022-07-23 13:04:13,424 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2069 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2069) |c_#memory_$Pointer$.base|))) is different from true [2022-07-23 13:04:13,434 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 [2022-07-23 13:04:13,444 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2071 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2071)))) is different from true [2022-07-23 13:04:13,516 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (select |c_#valid| v_arrayElimCell_9) (_ bv1 1)) (not (= v_arrayElimCell_9 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2075 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2075)))) is different from true [2022-07-23 13:04:13,568 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 [2022-07-23 13:04:13,889 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 13:04:13,889 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 [2022-07-23 13:04:13,908 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 [2022-07-23 13:04:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 703 trivial. 249 not checked. [2022-07-23 13:04:13,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:04:14,083 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2137 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2137) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))))) is different from false [2022-07-23 13:04:14,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1510508082] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:04:14,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:04:14,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 17 [2022-07-23 13:04:14,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990770473] [2022-07-23 13:04:14,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:04:14,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-23 13:04:14,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 13:04:14,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-23 13:04:14,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=102, Unknown=21, NotChecked=290, Total=462 [2022-07-23 13:04:14,086 INFO L87 Difference]: Start difference. First operand 1568 states and 1735 transitions. Second operand has 18 states, 16 states have (on average 5.0625) internal successors, (81), 18 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:04:17,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:04:17,559 INFO L93 Difference]: Finished difference Result 1891 states and 2045 transitions. [2022-07-23 13:04:17,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 13:04:17,560 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.0625) internal successors, (81), 18 states have internal predecessors, (81), 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 [2022-07-23 13:04:17,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:04:17,563 INFO L225 Difference]: With dead ends: 1891 [2022-07-23 13:04:17,563 INFO L226 Difference]: Without dead ends: 1887 [2022-07-23 13:04:17,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 125 SyntacticMatches, 82 SemanticMatches, 22 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=137, Unknown=23, NotChecked=330, Total=552 [2022-07-23 13:04:17,563 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 1143 mSDsluCounter, 4027 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 4897 SdHoareTripleChecker+Invalid, 22363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19726 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-23 13:04:17,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1153 Valid, 4897 Invalid, 22363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2625 Invalid, 0 Unknown, 19726 Unchecked, 3.3s Time] [2022-07-23 13:04:17,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2022-07-23 13:04:17,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1616. [2022-07-23 13:04:17,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1015 states have (on average 1.7330049261083744) internal successors, (1759), 1605 states have internal predecessors, (1759), 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) [2022-07-23 13:04:17,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 1783 transitions. [2022-07-23 13:04:17,596 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 1783 transitions. Word has length 110 [2022-07-23 13:04:17,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:04:17,597 INFO L495 AbstractCegarLoop]: Abstraction has 1616 states and 1783 transitions. [2022-07-23 13:04:17,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.0625) internal successors, (81), 18 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:04:17,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 1783 transitions. [2022-07-23 13:04:17,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-23 13:04:17,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:04:17,597 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:04:17,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-23 13:04:17,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2022-07-23 13:04:18,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-23 13:04:18,012 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 831 more)] === [2022-07-23 13:04:18,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:04:18,013 INFO L85 PathProgramCache]: Analyzing trace with hash 182176191, now seen corresponding path program 1 times [2022-07-23 13:04:18,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 13:04:18,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265930722] [2022-07-23 13:04:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:04:18,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 13:04:18,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 13:04:18,015 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 13:04:18,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-23 13:04:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:04:18,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 109 conjunts are in the unsatisfiable core [2022-07-23 13:04:18,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:04:18,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 13:04:18,762 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 13:04:18,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-23 13:04:18,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 13:04:18,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-23 13:04:18,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-23 13:04:18,852 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 [2022-07-23 13:04:18,855 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 [2022-07-23 13:04:18,892 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 [2022-07-23 13:04:18,900 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 [2022-07-23 13:04:18,916 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2503 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2503) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2502 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2502)))) is different from true [2022-07-23 13:04:18,958 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 [2022-07-23 13:04:18,965 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 [2022-07-23 13:04:18,973 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2511 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2511))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2510 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2510)))) is different from true [2022-07-23 13:04:18,982 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 [2022-07-23 13:04:18,990 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 [2022-07-23 13:04:18,998 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 [2022-07-23 13:04:19,008 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 [2022-07-23 13:04:19,036 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 [2022-07-23 13:04:19,044 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2525 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2525))) (exists ((v_ArrVal_2524 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2524) |c_#memory_$Pointer$.base|))) is different from true [2022-07-23 13:04:19,051 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 [2022-07-23 13:04:19,060 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2528 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2528) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2529 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2529) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-23 13:04:19,068 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2531 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2531))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2530 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2530)))) is different from true [2022-07-23 13:04:19,115 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 [2022-07-23 13:04:19,122 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2537 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2537))) (exists ((v_ArrVal_2536 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2536))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-07-23 13:04:19,130 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2539 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2539))) (exists ((v_ArrVal_2538 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2538))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-07-23 13:04:19,137 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2541 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2541))) (exists ((v_ArrVal_2540 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2540) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-07-23 13:04:19,179 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2546 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2546))) (exists ((v_ArrVal_2547 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2547) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-07-23 13:04:19,186 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 [2022-07-23 13:04:19,193 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 [2022-07-23 13:04:19,200 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 [2022-07-23 13:04:19,225 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2556 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2556))) (exists ((v_ArrVal_2557 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2557)))) is different from true [2022-07-23 13:04:19,250 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 [2022-07-23 13:04:19,257 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2563 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2563) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2562 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2562)))) is different from true [2022-07-23 13:04:19,265 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2565 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2565))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2564 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2564)))) is different from true [2022-07-23 13:04:19,291 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 [2022-07-23 13:04:19,316 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2572 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2572))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2573 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2573)))) is different from true [2022-07-23 13:04:19,327 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2574 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2574))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2575 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2575)))) is different from true [2022-07-23 13:04:19,351 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2578 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2578))) (exists ((v_ArrVal_2579 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2579)))) is different from true [2022-07-23 13:04:19,358 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2580 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2580))) (exists ((v_ArrVal_2581 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2581))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-07-23 13:04:19,365 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 [2022-07-23 13:04:19,372 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 [2022-07-23 13:04:19,397 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 13:04:19,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-07-23 13:04:19,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-07-23 13:04:19,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-07-23 13:04:19,430 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 [2022-07-23 13:04:19,457 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 935 not checked. [2022-07-23 13:04:19,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:04:20,089 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 [2022-07-23 13:04:20,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 13:04:20,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265930722] [2022-07-23 13:04:20,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265930722] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:04:20,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1609732982] [2022-07-23 13:04:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:04:20,095 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-23 13:04:20,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-23 13:04:20,096 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-23 13:04:20,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process