./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf 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/ldv-memsafety/memleaks_test6_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 098cac8041f427989b0fcb649de06793770da06a ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/ldv-memsafety/memleaks_test6_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 098cac8041f427989b0fcb649de06793770da06a .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:54:30,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:54:30,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:54:30,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:54:30,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:54:30,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:54:30,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:54:30,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:54:30,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:54:30,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:54:30,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:54:30,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:54:30,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:54:30,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:54:30,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:54:30,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:54:30,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:54:30,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:54:30,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:54:30,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:54:30,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:54:30,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:54:30,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:54:30,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:54:30,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:54:30,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:54:30,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:54:30,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:54:30,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:54:30,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:54:30,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:54:30,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:54:30,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:54:30,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:54:30,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:54:30,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:54:30,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:54:30,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:54:30,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:54:30,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:54:30,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:54:30,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 17:54:30,682 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:54:30,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:54:30,684 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:54:30,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:54:30,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:54:30,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:54:30,685 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:54:30,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:54:30,686 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:54:30,686 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:54:30,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:54:30,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:54:30,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:54:30,687 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:54:30,687 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:54:30,687 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:54:30,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:54:30,688 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:54:30,688 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:54:30,688 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:54:30,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:54:30,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:54:30,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:54:30,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:54:30,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:54:30,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:54:30,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 17:54:30,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 17:54:30,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:54:30,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 098cac8041f427989b0fcb649de06793770da06a [2021-08-30 17:54:30,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:54:30,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:54:30,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:54:30,970 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:54:30,971 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:54:30,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2021-08-30 17:54:31,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e1f1bd0/90f98728d55448f68076f2f47e24a002/FLAGc2c9e54e1 [2021-08-30 17:54:31,488 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:54:31,491 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2021-08-30 17:54:31,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e1f1bd0/90f98728d55448f68076f2f47e24a002/FLAGc2c9e54e1 [2021-08-30 17:54:31,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e1f1bd0/90f98728d55448f68076f2f47e24a002 [2021-08-30 17:54:31,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:54:31,525 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:54:31,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:54:31,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:54:31,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:54:31,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:54:31" (1/1) ... [2021-08-30 17:54:31,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a797e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:31, skipping insertion in model container [2021-08-30 17:54:31,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:54:31" (1/1) ... [2021-08-30 17:54:31,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:54:31,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:54:31,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:54:31,938 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-08-30 17:54:31,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@28bb7fc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:31, skipping insertion in model container [2021-08-30 17:54:31,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:54:31,939 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-30 17:54:31,941 INFO L158 Benchmark]: Toolchain (without parser) took 414.81ms. Allocated memory is still 60.8MB. Free memory was 44.3MB in the beginning and 41.1MB in the end (delta: 3.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-30 17:54:31,942 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 46.1MB. Free memory was 29.0MB in the beginning and 28.9MB in the end (delta: 32.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:54:31,943 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.67ms. Allocated memory is still 60.8MB. Free memory was 44.3MB in the beginning and 41.1MB in the end (delta: 3.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-30 17:54:31,944 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 46.1MB. Free memory was 29.0MB in the beginning and 28.9MB in the end (delta: 32.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.67ms. Allocated memory is still 60.8MB. Free memory was 44.3MB in the beginning and 41.1MB in the end (delta: 3.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:54:33,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:54:33,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:54:33,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:54:33,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:54:33,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:54:33,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:54:33,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:54:33,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:54:33,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:54:33,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:54:33,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:54:33,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:54:33,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:54:33,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:54:33,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:54:33,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:54:33,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:54:33,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:54:33,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:54:33,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:54:33,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:54:33,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:54:33,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:54:33,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:54:33,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:54:33,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:54:33,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:54:33,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:54:33,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:54:33,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:54:33,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:54:33,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:54:33,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:54:33,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:54:33,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:54:33,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:54:33,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:54:33,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:54:33,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:54:33,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:54:33,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 17:54:33,362 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:54:33,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:54:33,363 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:54:33,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:54:33,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:54:33,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:54:33,365 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:54:33,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:54:33,365 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:54:33,365 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:54:33,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:54:33,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:54:33,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:54:33,366 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:54:33,366 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:54:33,366 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:54:33,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:54:33,366 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:54:33,367 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 17:54:33,367 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 17:54:33,367 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:54:33,367 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:54:33,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:54:33,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:54:33,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:54:33,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:54:33,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:54:33,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:54:33,367 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 17:54:33,367 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 17:54:33,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:54:33,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 17:54:33,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 098cac8041f427989b0fcb649de06793770da06a [2021-08-30 17:54:33,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:54:33,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:54:33,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:54:33,657 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:54:33,658 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:54:33,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2021-08-30 17:54:33,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67d80356e/06245f556b1049a9afc6bf27ea221ff5/FLAGea52f7a7a [2021-08-30 17:54:34,137 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:54:34,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2021-08-30 17:54:34,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67d80356e/06245f556b1049a9afc6bf27ea221ff5/FLAGea52f7a7a [2021-08-30 17:54:34,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67d80356e/06245f556b1049a9afc6bf27ea221ff5 [2021-08-30 17:54:34,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:54:34,171 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:54:34,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:54:34,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:54:34,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:54:34,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d70890f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34, skipping insertion in model container [2021-08-30 17:54:34,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:54:34,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:54:34,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:54:34,582 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-30 17:54:34,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:54:34,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:54:34,634 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:54:34,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:54:34,706 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:54:34,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34 WrapperNode [2021-08-30 17:54:34,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:54:34,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:54:34,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:54:34,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:54:34,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:54:34,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:54:34,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:54:34,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:54:34,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (1/1) ... [2021-08-30 17:54:34,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:54:34,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:54:34,798 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) [2021-08-30 17:54:34,808 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 [2021-08-30 17:54:34,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:54:34,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:54:34,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-08-30 17:54:34,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:54:34,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:54:34,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:54:34,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:54:34,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:54:34,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:54:34,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-08-30 17:54:34,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-08-30 17:54:34,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-08-30 17:54:34,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-08-30 17:54:34,830 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-08-30 17:54:34,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-08-30 17:54:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-08-30 17:54:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-08-30 17:54:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-08-30 17:54:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-08-30 17:54:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-08-30 17:54:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-08-30 17:54:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-08-30 17:54:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-08-30 17:54:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-08-30 17:54:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-08-30 17:54:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-08-30 17:54:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-08-30 17:54:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-08-30 17:54:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-08-30 17:54:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-08-30 17:54:34,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-08-30 17:54:34,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-08-30 17:54:34,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-08-30 17:54:34,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-08-30 17:54:34,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-08-30 17:54:34,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-08-30 17:54:34,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-08-30 17:54:34,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-08-30 17:54:34,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-08-30 17:54:34,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-08-30 17:54:34,834 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-08-30 17:54:34,834 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-08-30 17:54:34,834 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2021-08-30 17:54:34,834 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2021-08-30 17:54:34,834 INFO L138 BoogieDeclarations]: Found implementation of procedure probe3_6 [2021-08-30 17:54:34,834 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2021-08-30 17:54:34,835 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-08-30 17:54:34,835 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:54:34,835 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-30 17:54:34,835 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-08-30 17:54:34,835 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-08-30 17:54:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:54:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:54:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:54:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:54:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:54:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:54:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:54:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:54:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:54:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:54:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:54:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:54:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:54:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:54:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:54:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:54:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:54:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:54:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:54:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:54:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:54:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:54:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:54:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:54:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:54:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:54:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:54:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:54:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:54:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:54:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:54:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:54:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:54:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:54:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:54:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:54:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:54:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:54:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:54:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:54:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:54:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:54:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:54:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:54:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:54:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:54:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:54:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:54:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:54:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:54:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:54:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:54:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:54:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:54:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:54:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:54:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:54:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:54:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:54:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:54:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:54:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:54:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:54:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:54:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:54:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:54:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:54:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:54:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:54:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:54:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:54:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:54:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:54:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:54:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:54:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:54:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:54:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:54:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:54:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:54:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:54:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:54:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:54:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:54:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:54:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:54:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:54:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:54:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:54:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:54:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:54:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:54:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:54:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:54:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:54:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:54:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:54:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:54:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:54:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:54:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:54:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:54:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:54:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:54:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:54:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:54:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:54:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-08-30 17:54:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:54:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-08-30 17:54:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-08-30 17:54:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-30 17:54:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-30 17:54:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-08-30 17:54:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:54:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-08-30 17:54:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-08-30 17:54:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-08-30 17:54:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:54:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-08-30 17:54:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-08-30 17:54:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-08-30 17:54:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:54:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-08-30 17:54:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-08-30 17:54:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-08-30 17:54:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-08-30 17:54:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-08-30 17:54:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-08-30 17:54:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:54:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-08-30 17:54:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-08-30 17:54:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-08-30 17:54:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-08-30 17:54:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-08-30 17:54:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-30 17:54:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-30 17:54:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-08-30 17:54:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-08-30 17:54:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-08-30 17:54:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-08-30 17:54:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-08-30 17:54:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-08-30 17:54:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-08-30 17:54:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-08-30 17:54:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-08-30 17:54:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-08-30 17:54:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-08-30 17:54:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-08-30 17:54:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-08-30 17:54:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-08-30 17:54:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-30 17:54:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-08-30 17:54:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-08-30 17:54:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2021-08-30 17:54:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2021-08-30 17:54:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure probe3_6 [2021-08-30 17:54:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_6 [2021-08-30 17:54:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-08-30 17:54:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:54:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:54:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:54:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-30 17:54:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:54:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:54:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-08-30 17:54:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-08-30 17:54:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-08-30 17:54:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-08-30 17:54:35,149 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:54:35,208 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:54:35,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:54:35,255 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-30 17:54:35,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:54:35 BoogieIcfgContainer [2021-08-30 17:54:35,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:54:35,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:54:35,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:54:35,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:54:35,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:54:34" (1/3) ... [2021-08-30 17:54:35,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@347d76c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:54:35, skipping insertion in model container [2021-08-30 17:54:35,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:34" (2/3) ... [2021-08-30 17:54:35,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@347d76c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:54:35, skipping insertion in model container [2021-08-30 17:54:35,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:54:35" (3/3) ... [2021-08-30 17:54:35,269 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_2.i [2021-08-30 17:54:35,273 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:54:35,273 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 86 error locations. [2021-08-30 17:54:35,300 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:54:35,304 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 17:54:35,304 INFO L340 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2021-08-30 17:54:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 76 states have (on average 1.5657894736842106) internal successors, (119), 110 states have internal predecessors, (119), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-08-30 17:54:35,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 17:54:35,324 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:35,325 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:35,325 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-08-30 17:54:35,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:35,330 INFO L82 PathProgramCache]: Analyzing trace with hash -2083337596, now seen corresponding path program 1 times [2021-08-30 17:54:35,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:35,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672714089] [2021-08-30 17:54:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:35,338 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:35,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:35,343 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) [2021-08-30 17:54:35,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-30 17:54:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:35,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:54:35,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:35,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:35,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:35,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:35,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672714089] [2021-08-30 17:54:35,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672714089] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:35,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:35,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 17:54:35,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253086266] [2021-08-30 17:54:35,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:54:35,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:35,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:54:35,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:35,778 INFO L87 Difference]: Start difference. First operand has 139 states, 76 states have (on average 1.5657894736842106) internal successors, (119), 110 states have internal predecessors, (119), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:54:36,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:36,036 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2021-08-30 17:54:36,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:54:36,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2021-08-30 17:54:36,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:36,046 INFO L225 Difference]: With dead ends: 94 [2021-08-30 17:54:36,046 INFO L226 Difference]: Without dead ends: 91 [2021-08-30 17:54:36,047 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.12ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:36,049 INFO L928 BasicCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 159.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.95ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 229.22ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:36,050 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 78 Invalid, 257 Unknown, 0 Unchecked, 3.95ms Time], IncrementalHoareTripleChecker [2 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 229.22ms Time] [2021-08-30 17:54:36,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-08-30 17:54:36,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 70. [2021-08-30 17:54:36,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 54 states have internal predecessors, (58), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-30 17:54:36,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2021-08-30 17:54:36,085 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 20 [2021-08-30 17:54:36,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:36,086 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2021-08-30 17:54:36,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:54:36,086 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2021-08-30 17:54:36,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 17:54:36,087 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:36,087 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:36,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:36,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:36,288 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-08-30 17:54:36,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:36,288 INFO L82 PathProgramCache]: Analyzing trace with hash 2015116195, now seen corresponding path program 1 times [2021-08-30 17:54:36,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:36,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342893936] [2021-08-30 17:54:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:36,289 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:36,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:36,291 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) [2021-08-30 17:54:36,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-30 17:54:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:36,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-30 17:54:36,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:36,499 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:54:36,500 INFO L388 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 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:54:36,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-08-30 17:54:36,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:36,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:36,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-08-30 17:54:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:36,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:36,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342893936] [2021-08-30 17:54:36,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342893936] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:36,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:36,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-30 17:54:36,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810308003] [2021-08-30 17:54:36,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:54:36,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:36,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:54:36,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:36,853 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-30 17:54:37,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:37,064 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2021-08-30 17:54:37,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:54:37,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 20 [2021-08-30 17:54:37,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:37,066 INFO L225 Difference]: With dead ends: 111 [2021-08-30 17:54:37,066 INFO L226 Difference]: Without dead ends: 108 [2021-08-30 17:54:37,067 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.54ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:54:37,068 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 107 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.59ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 181.66ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:37,068 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 17 Invalid, 183 Unknown, 0 Unchecked, 4.59ms Time], IncrementalHoareTripleChecker [24 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 181.66ms Time] [2021-08-30 17:54:37,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-08-30 17:54:37,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 75. [2021-08-30 17:54:37,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 42 states have (on average 1.5) internal successors, (63), 58 states have internal predecessors, (63), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-30 17:54:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2021-08-30 17:54:37,078 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 20 [2021-08-30 17:54:37,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:37,078 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2021-08-30 17:54:37,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-30 17:54:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2021-08-30 17:54:37,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 17:54:37,079 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:37,079 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:37,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:37,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:37,291 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-08-30 17:54:37,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:37,292 INFO L82 PathProgramCache]: Analyzing trace with hash 2015116196, now seen corresponding path program 1 times [2021-08-30 17:54:37,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:37,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359473844] [2021-08-30 17:54:37,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:37,293 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:37,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:37,295 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) [2021-08-30 17:54:37,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-30 17:54:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:37,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 17:54:37,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:37,435 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-30 17:54:37,436 INFO L388 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-08-30 17:54:37,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-08-30 17:54:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:37,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:37,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-08-30 17:54:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:37,888 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:37,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359473844] [2021-08-30 17:54:37,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359473844] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:37,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:37,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-30 17:54:37,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806239488] [2021-08-30 17:54:37,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:54:37,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:37,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:54:37,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:54:37,890 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-30 17:54:38,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:38,180 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2021-08-30 17:54:38,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:54:38,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 20 [2021-08-30 17:54:38,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:38,182 INFO L225 Difference]: With dead ends: 125 [2021-08-30 17:54:38,182 INFO L226 Difference]: Without dead ends: 124 [2021-08-30 17:54:38,182 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.63ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:54:38,183 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 116 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 211.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.91ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 268.01ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:38,183 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 23 Invalid, 253 Unknown, 0 Unchecked, 2.91ms Time], IncrementalHoareTripleChecker [32 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 268.01ms Time] [2021-08-30 17:54:38,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-08-30 17:54:38,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 106. [2021-08-30 17:54:38,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 83 states have internal predecessors, (103), 11 states have call successors, (11), 11 states have call predecessors, (11), 13 states have return successors, (13), 13 states have call predecessors, (13), 10 states have call successors, (13) [2021-08-30 17:54:38,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2021-08-30 17:54:38,194 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 20 [2021-08-30 17:54:38,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:38,195 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2021-08-30 17:54:38,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-30 17:54:38,195 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2021-08-30 17:54:38,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 17:54:38,196 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:38,196 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:38,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:38,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:38,405 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-08-30 17:54:38,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:38,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1702507591, now seen corresponding path program 1 times [2021-08-30 17:54:38,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:38,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733069891] [2021-08-30 17:54:38,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:38,406 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:38,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:38,409 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) [2021-08-30 17:54:38,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-30 17:54:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:38,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:54:38,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:38,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:38,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:38,594 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:38,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733069891] [2021-08-30 17:54:38,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733069891] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:38,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:38,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-30 17:54:38,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244346787] [2021-08-30 17:54:38,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:54:38,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:38,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:54:38,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:38,597 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:54:38,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:38,709 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2021-08-30 17:54:38,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:54:38,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-08-30 17:54:38,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:38,711 INFO L225 Difference]: With dead ends: 104 [2021-08-30 17:54:38,711 INFO L226 Difference]: Without dead ends: 104 [2021-08-30 17:54:38,711 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.94ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:38,712 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.36ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99.12ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:38,712 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 57 Invalid, 188 Unknown, 0 Unchecked, 2.36ms Time], IncrementalHoareTripleChecker [2 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 99.12ms Time] [2021-08-30 17:54:38,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-08-30 17:54:38,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-08-30 17:54:38,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 66 states have (on average 1.5) internal successors, (99), 81 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 13 states have return successors, (13), 13 states have call predecessors, (13), 10 states have call successors, (13) [2021-08-30 17:54:38,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2021-08-30 17:54:38,717 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 22 [2021-08-30 17:54:38,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:38,718 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2021-08-30 17:54:38,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:54:38,718 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2021-08-30 17:54:38,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 17:54:38,718 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:38,718 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:38,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:38,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:38,921 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting disconnect_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-08-30 17:54:38,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:38,921 INFO L82 PathProgramCache]: Analyzing trace with hash -503576158, now seen corresponding path program 1 times [2021-08-30 17:54:38,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:38,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714228715] [2021-08-30 17:54:38,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:38,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:38,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:38,923 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) [2021-08-30 17:54:38,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-30 17:54:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:39,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 17:54:39,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:39,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:39,146 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:39,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714228715] [2021-08-30 17:54:39,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714228715] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:39,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:39,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-08-30 17:54:39,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069874336] [2021-08-30 17:54:39,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 17:54:39,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:39,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 17:54:39,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:54:39,148 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 17:54:39,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:39,372 INFO L93 Difference]: Finished difference Result 118 states and 137 transitions. [2021-08-30 17:54:39,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:54:39,372 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 22 [2021-08-30 17:54:39,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:39,373 INFO L225 Difference]: With dead ends: 118 [2021-08-30 17:54:39,373 INFO L226 Difference]: Without dead ends: 114 [2021-08-30 17:54:39,373 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 41.90ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-08-30 17:54:39,374 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 17 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 166.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.63ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 200.32ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:39,374 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 117 Invalid, 423 Unknown, 0 Unchecked, 2.63ms Time], IncrementalHoareTripleChecker [5 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 200.32ms Time] [2021-08-30 17:54:39,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-08-30 17:54:39,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2021-08-30 17:54:39,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 69 states have (on average 1.463768115942029) internal successors, (101), 84 states have internal predecessors, (101), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-08-30 17:54:39,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2021-08-30 17:54:39,380 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 22 [2021-08-30 17:54:39,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:39,381 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2021-08-30 17:54:39,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 17:54:39,381 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2021-08-30 17:54:39,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 17:54:39,381 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:39,381 INFO L513 BasicCegarLoop]: 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] [2021-08-30 17:54:39,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:39,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:39,588 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-08-30 17:54:39,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:39,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1238127481, now seen corresponding path program 1 times [2021-08-30 17:54:39,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:39,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853976041] [2021-08-30 17:54:39,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:39,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:39,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:39,590 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) [2021-08-30 17:54:39,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-30 17:54:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:39,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 17:54:39,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:39,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:39,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:39,927 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:39,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853976041] [2021-08-30 17:54:39,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853976041] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:39,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:39,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-08-30 17:54:39,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216463605] [2021-08-30 17:54:39,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 17:54:39,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:39,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 17:54:39,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:54:39,928 INFO L87 Difference]: Start difference. First operand 108 states and 126 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 17:54:40,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:40,120 INFO L93 Difference]: Finished difference Result 116 states and 134 transitions. [2021-08-30 17:54:40,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:54:40,120 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2021-08-30 17:54:40,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:40,121 INFO L225 Difference]: With dead ends: 116 [2021-08-30 17:54:40,121 INFO L226 Difference]: Without dead ends: 116 [2021-08-30 17:54:40,121 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 65.09ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:54:40,122 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 67 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 149.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.98ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 180.96ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:40,122 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 20 Invalid, 331 Unknown, 0 Unchecked, 1.98ms Time], IncrementalHoareTripleChecker [7 Valid, 250 Invalid, 0 Unknown, 74 Unchecked, 180.96ms Time] [2021-08-30 17:54:40,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-30 17:54:40,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2021-08-30 17:54:40,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 88 states have internal predecessors, (105), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-08-30 17:54:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2021-08-30 17:54:40,127 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 23 [2021-08-30 17:54:40,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:40,128 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2021-08-30 17:54:40,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 17:54:40,128 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2021-08-30 17:54:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 17:54:40,129 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:40,129 INFO L513 BasicCegarLoop]: 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] [2021-08-30 17:54:40,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:40,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:40,336 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-08-30 17:54:40,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:40,336 INFO L82 PathProgramCache]: Analyzing trace with hash 272754043, now seen corresponding path program 1 times [2021-08-30 17:54:40,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:40,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098276418] [2021-08-30 17:54:40,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:40,337 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:40,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:40,337 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) [2021-08-30 17:54:40,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-30 17:54:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:40,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:54:40,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:40,447 INFO L388 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 [2021-08-30 17:54:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:40,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:40,570 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:40,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098276418] [2021-08-30 17:54:40,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098276418] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:40,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:40,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2021-08-30 17:54:40,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720038615] [2021-08-30 17:54:40,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:54:40,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:40,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:54:40,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:54:40,574 INFO L87 Difference]: Start difference. First operand 112 states and 130 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:54:40,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:40,631 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2021-08-30 17:54:40,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:54:40,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-08-30 17:54:40,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:40,634 INFO L225 Difference]: With dead ends: 113 [2021-08-30 17:54:40,634 INFO L226 Difference]: Without dead ends: 113 [2021-08-30 17:54:40,634 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 24.30ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:54:40,636 INFO L928 BasicCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 49.25ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:40,637 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 126 Unknown, 0 Unchecked, 2.30ms Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 58 Unchecked, 49.25ms Time] [2021-08-30 17:54:40,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-08-30 17:54:40,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-08-30 17:54:40,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 74 states have (on average 1.4324324324324325) internal successors, (106), 89 states have internal predecessors, (106), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-08-30 17:54:40,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2021-08-30 17:54:40,651 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 24 [2021-08-30 17:54:40,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:40,651 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2021-08-30 17:54:40,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:54:40,652 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2021-08-30 17:54:40,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 17:54:40,652 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:40,652 INFO L513 BasicCegarLoop]: 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] [2021-08-30 17:54:40,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:40,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:40,861 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-08-30 17:54:40,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:40,862 INFO L82 PathProgramCache]: Analyzing trace with hash -232804582, now seen corresponding path program 1 times [2021-08-30 17:54:40,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:40,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284282901] [2021-08-30 17:54:40,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:40,862 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:40,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:40,866 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) [2021-08-30 17:54:40,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-30 17:54:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:40,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 17:54:40,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:41,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:41,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:41,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:41,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:41,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284282901] [2021-08-30 17:54:41,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284282901] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:41,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:41,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 17:54:41,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664104952] [2021-08-30 17:54:41,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:54:41,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:41,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:54:41,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:41,095 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:54:41,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:41,220 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2021-08-30 17:54:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:54:41,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-08-30 17:54:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:41,221 INFO L225 Difference]: With dead ends: 75 [2021-08-30 17:54:41,221 INFO L226 Difference]: Without dead ends: 71 [2021-08-30 17:54:41,221 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.51ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:41,222 INFO L928 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.28ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119.36ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:41,222 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 213 Unknown, 0 Unchecked, 1.28ms Time], IncrementalHoareTripleChecker [0 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 119.36ms Time] [2021-08-30 17:54:41,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-08-30 17:54:41,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-08-30 17:54:41,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 55 states have internal predecessors, (57), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-30 17:54:41,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2021-08-30 17:54:41,224 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 24 [2021-08-30 17:54:41,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:41,225 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2021-08-30 17:54:41,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:54:41,225 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2021-08-30 17:54:41,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 17:54:41,225 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:41,225 INFO L513 BasicCegarLoop]: 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] [2021-08-30 17:54:41,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-08-30 17:54:41,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:41,432 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting probe3_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-08-30 17:54:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:41,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1514319562, now seen corresponding path program 1 times [2021-08-30 17:54:41,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:41,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100705412] [2021-08-30 17:54:41,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:41,433 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:41,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:41,434 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) [2021-08-30 17:54:41,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-30 17:54:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:41,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-30 17:54:41,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:41,552 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:54:41,552 INFO L388 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 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:54:41,664 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-30 17:54:41,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-08-30 17:54:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:41,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:41,912 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:41,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100705412] [2021-08-30 17:54:41,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100705412] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:41,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:41,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 8 [2021-08-30 17:54:41,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290443817] [2021-08-30 17:54:41,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 17:54:41,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:41,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 17:54:41,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-30 17:54:41,914 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-30 17:54:42,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:42,116 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-08-30 17:54:42,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 17:54:42,116 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 28 [2021-08-30 17:54:42,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:42,117 INFO L225 Difference]: With dead ends: 70 [2021-08-30 17:54:42,117 INFO L226 Difference]: Without dead ends: 70 [2021-08-30 17:54:42,117 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 13 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 161.28ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-08-30 17:54:42,117 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.22ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 135.97ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:42,117 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 28 Invalid, 313 Unknown, 0 Unchecked, 2.22ms Time], IncrementalHoareTripleChecker [11 Valid, 208 Invalid, 0 Unknown, 94 Unchecked, 135.97ms Time] [2021-08-30 17:54:42,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-08-30 17:54:42,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-08-30 17:54:42,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 54 states have internal predecessors, (56), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-30 17:54:42,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2021-08-30 17:54:42,120 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 28 [2021-08-30 17:54:42,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:42,120 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2021-08-30 17:54:42,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-30 17:54:42,120 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2021-08-30 17:54:42,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 17:54:42,121 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:42,121 INFO L513 BasicCegarLoop]: 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] [2021-08-30 17:54:42,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:42,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:42,327 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting probe3_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-08-30 17:54:42,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:42,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1514319563, now seen corresponding path program 1 times [2021-08-30 17:54:42,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:42,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330519425] [2021-08-30 17:54:42,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:42,329 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:42,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:42,333 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) [2021-08-30 17:54:42,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-30 17:54:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:42,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-30 17:54:42,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:42,458 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-30 17:54:42,459 INFO L388 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-08-30 17:54:46,620 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:54:46,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-08-30 17:54:46,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:46,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:47,834 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:47,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330519425] [2021-08-30 17:54:47,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330519425] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:47,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:47,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-08-30 17:54:47,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836875069] [2021-08-30 17:54:47,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 17:54:47,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:47,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 17:54:47,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210 [2021-08-30 17:54:47,836 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-08-30 17:54:48,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:48,040 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2021-08-30 17:54:48,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:54:48,045 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 28 [2021-08-30 17:54:48,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:48,046 INFO L225 Difference]: With dead ends: 69 [2021-08-30 17:54:48,046 INFO L226 Difference]: Without dead ends: 69 [2021-08-30 17:54:48,046 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4800.02ms TimeCoverageRelationStatistics Valid=49, Invalid=189, Unknown=2, NotChecked=0, Total=240 [2021-08-30 17:54:48,046 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 44 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 155.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 271 IncrementalHoareTripleChecker+Unchecked, 179.08ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:48,047 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 41 Invalid, 451 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 271 Unchecked, 179.08ms Time] [2021-08-30 17:54:48,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-08-30 17:54:48,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-08-30 17:54:48,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 53 states have internal predecessors, (55), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-30 17:54:48,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2021-08-30 17:54:48,049 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 28 [2021-08-30 17:54:48,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:48,049 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2021-08-30 17:54:48,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-08-30 17:54:48,049 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2021-08-30 17:54:48,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 17:54:48,049 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:48,049 INFO L513 BasicCegarLoop]: 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] [2021-08-30 17:54:48,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:48,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:48,250 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-08-30 17:54:48,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:48,250 INFO L82 PathProgramCache]: Analyzing trace with hash -300735220, now seen corresponding path program 1 times [2021-08-30 17:54:48,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:48,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410983830] [2021-08-30 17:54:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:48,251 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:48,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:48,252 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) [2021-08-30 17:54:48,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-30 17:54:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:48,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 17:54:48,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:48,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:48,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:48,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410983830] [2021-08-30 17:54:48,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410983830] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:48,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:48,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-08-30 17:54:48,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409762733] [2021-08-30 17:54:48,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 17:54:48,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:48,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 17:54:48,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:54:48,647 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-08-30 17:54:48,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:48,836 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2021-08-30 17:54:48,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 17:54:48,837 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 29 [2021-08-30 17:54:48,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:48,838 INFO L225 Difference]: With dead ends: 67 [2021-08-30 17:54:48,838 INFO L226 Difference]: Without dead ends: 67 [2021-08-30 17:54:48,838 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 95.21ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:54:48,838 INFO L928 BasicCegarLoop]: 13 mSDtfsCounter, 63 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 154.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.31ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 183.17ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:48,838 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 17 Invalid, 271 Unknown, 0 Unchecked, 1.31ms Time], IncrementalHoareTripleChecker [4 Valid, 226 Invalid, 0 Unknown, 41 Unchecked, 183.17ms Time] [2021-08-30 17:54:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-08-30 17:54:48,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-08-30 17:54:48,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 51 states have internal predecessors, (53), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-30 17:54:48,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2021-08-30 17:54:48,840 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 29 [2021-08-30 17:54:48,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:48,840 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2021-08-30 17:54:48,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-08-30 17:54:48,841 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2021-08-30 17:54:48,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 17:54:48,841 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:48,841 INFO L513 BasicCegarLoop]: 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] [2021-08-30 17:54:48,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:49,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:49,049 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-08-30 17:54:49,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:49,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1727877462, now seen corresponding path program 1 times [2021-08-30 17:54:49,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:49,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230126978] [2021-08-30 17:54:49,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:49,050 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:49,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:49,051 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) [2021-08-30 17:54:49,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-30 17:54:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:49,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 17:54:49,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:49,188 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:54:49,188 INFO L388 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 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:54:49,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-08-30 17:54:49,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 17 [2021-08-30 17:54:49,400 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-08-30 17:54:49,400 INFO L388 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 28 treesize of output 31 [2021-08-30 17:54:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:49,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:49,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-08-30 17:54:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:49,733 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:49,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230126978] [2021-08-30 17:54:49,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230126978] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:49,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:49,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-08-30 17:54:49,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937870786] [2021-08-30 17:54:49,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 17:54:49,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:49,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 17:54:49,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-08-30 17:54:49,734 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-30 17:55:04,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:55:04,121 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2021-08-30 17:55:04,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-30 17:55:04,121 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 29 [2021-08-30 17:55:04,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:55:04,122 INFO L225 Difference]: With dead ends: 67 [2021-08-30 17:55:04,122 INFO L226 Difference]: Without dead ends: 67 [2021-08-30 17:55:04,122 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 14297.20ms TimeCoverageRelationStatistics Valid=92, Invalid=321, Unknown=7, NotChecked=0, Total=420 [2021-08-30 17:55:04,122 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 54 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 211.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.22ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 237.22ms IncrementalHoareTripleChecker+Time [2021-08-30 17:55:04,123 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 17 Invalid, 390 Unknown, 0 Unchecked, 2.22ms Time], IncrementalHoareTripleChecker [30 Valid, 238 Invalid, 0 Unknown, 122 Unchecked, 237.22ms Time] [2021-08-30 17:55:04,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-08-30 17:55:04,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2021-08-30 17:55:04,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 46 states have internal predecessors, (50), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-30 17:55:04,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2021-08-30 17:55:04,124 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 29 [2021-08-30 17:55:04,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:55:04,125 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2021-08-30 17:55:04,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-30 17:55:04,125 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2021-08-30 17:55:04,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 17:55:04,125 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:55:04,125 INFO L513 BasicCegarLoop]: 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] [2021-08-30 17:55:04,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-30 17:55:04,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:55:04,332 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-08-30 17:55:04,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:55:04,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1727877461, now seen corresponding path program 1 times [2021-08-30 17:55:04,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:55:04,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378743340] [2021-08-30 17:55:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:55:04,333 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:55:04,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:55:04,334 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) [2021-08-30 17:55:04,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-30 17:55:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:55:04,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-30 17:55:04,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:55:04,446 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-30 17:55:04,447 INFO L388 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-08-30 17:55:04,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-08-30 17:55:08,593 INFO L388 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 [2021-08-30 17:55:08,686 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:55:08,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-08-30 17:55:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:55:08,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:55:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:55:09,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:55:09,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378743340] [2021-08-30 17:55:09,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378743340] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:55:09,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:55:09,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 14 [2021-08-30 17:55:09,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995080917] [2021-08-30 17:55:09,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 17:55:09,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:55:09,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 17:55:09,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=138, Unknown=5, NotChecked=0, Total=210 [2021-08-30 17:55:09,813 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 7 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-30 17:55:14,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:55:14,010 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2021-08-30 17:55:14,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:55:14,010 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 7 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) Word has length 29 [2021-08-30 17:55:14,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:55:14,011 INFO L225 Difference]: With dead ends: 75 [2021-08-30 17:55:14,011 INFO L226 Difference]: Without dead ends: 75 [2021-08-30 17:55:14,011 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 8802.23ms TimeCoverageRelationStatistics Valid=94, Invalid=172, Unknown=6, NotChecked=0, Total=272 [2021-08-30 17:55:14,011 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.16ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 132.76ms IncrementalHoareTripleChecker+Time [2021-08-30 17:55:14,011 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 27 Invalid, 281 Unknown, 0 Unchecked, 1.16ms Time], IncrementalHoareTripleChecker [12 Valid, 100 Invalid, 0 Unknown, 169 Unchecked, 132.76ms Time] [2021-08-30 17:55:14,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-08-30 17:55:14,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2021-08-30 17:55:14,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 53 states have internal predecessors, (57), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-30 17:55:14,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2021-08-30 17:55:14,013 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 29 [2021-08-30 17:55:14,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:55:14,013 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2021-08-30 17:55:14,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 7 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-30 17:55:14,014 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2021-08-30 17:55:14,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-30 17:55:14,014 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:55:14,014 INFO L513 BasicCegarLoop]: 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] [2021-08-30 17:55:14,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-08-30 17:55:14,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:55:14,221 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-08-30 17:55:14,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:55:14,221 INFO L82 PathProgramCache]: Analyzing trace with hash -14051751, now seen corresponding path program 1 times [2021-08-30 17:55:14,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:55:14,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77995340] [2021-08-30 17:55:14,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:55:14,222 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:55:14,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:55:14,223 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) [2021-08-30 17:55:14,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-08-30 17:55:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:55:14,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 17:55:14,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:55:14,363 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:55:14,363 INFO L388 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 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:55:14,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 17 [2021-08-30 17:55:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:55:19,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:55:23,134 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:55:23,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77995340] [2021-08-30 17:55:23,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:55:23,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [922763102] [2021-08-30 17:55:23,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:55:23,135 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-30 17:55:23,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-30 17:55:23,137 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-30 17:55:23,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-08-30 17:55:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:55:23,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-30 17:55:23,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:55:23,352 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:55:23,352 INFO L388 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 3 case distinctions, treesize of input 27 treesize of output 38 [2021-08-30 17:55:23,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 17 [2021-08-30 17:55:23,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:55:23,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:55:28,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:55:28,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416338680] [2021-08-30 17:55:28,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:55:28,090 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:55:28,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:55:28,091 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:55:28,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-30 17:55:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:55:28,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-30 17:55:28,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:55:28,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 17 [2021-08-30 17:55:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:55:30,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:55:34,628 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:55:34,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:55:34,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-30 17:55:34,628 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-30 17:55:34,628 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-08-30 17:55:34,631 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (85 of 86 remaining) [2021-08-30 17:55:34,633 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION (84 of 86 remaining) [2021-08-30 17:55:34,633 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION (83 of 86 remaining) [2021-08-30 17:55:34,633 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION (82 of 86 remaining) [2021-08-30 17:55:34,633 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION (81 of 86 remaining) [2021-08-30 17:55:34,633 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION (80 of 86 remaining) [2021-08-30 17:55:34,633 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION (79 of 86 remaining) [2021-08-30 17:55:34,634 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION (78 of 86 remaining) [2021-08-30 17:55:34,634 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION (77 of 86 remaining) [2021-08-30 17:55:34,634 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (76 of 86 remaining) [2021-08-30 17:55:34,634 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION (75 of 86 remaining) [2021-08-30 17:55:34,634 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION (74 of 86 remaining) [2021-08-30 17:55:34,634 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION (73 of 86 remaining) [2021-08-30 17:55:34,634 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION (72 of 86 remaining) [2021-08-30 17:55:34,635 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION (71 of 86 remaining) [2021-08-30 17:55:34,635 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION (70 of 86 remaining) [2021-08-30 17:55:34,635 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION (69 of 86 remaining) [2021-08-30 17:55:34,635 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION (68 of 86 remaining) [2021-08-30 17:55:34,635 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION (67 of 86 remaining) [2021-08-30 17:55:34,635 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION (66 of 86 remaining) [2021-08-30 17:55:34,635 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION (65 of 86 remaining) [2021-08-30 17:55:34,635 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION (64 of 86 remaining) [2021-08-30 17:55:34,636 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION (63 of 86 remaining) [2021-08-30 17:55:34,636 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION (62 of 86 remaining) [2021-08-30 17:55:34,636 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION (61 of 86 remaining) [2021-08-30 17:55:34,636 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION (60 of 86 remaining) [2021-08-30 17:55:34,636 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION (59 of 86 remaining) [2021-08-30 17:55:34,636 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION (58 of 86 remaining) [2021-08-30 17:55:34,636 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION (57 of 86 remaining) [2021-08-30 17:55:34,636 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION (56 of 86 remaining) [2021-08-30 17:55:34,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION (55 of 86 remaining) [2021-08-30 17:55:34,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION (54 of 86 remaining) [2021-08-30 17:55:34,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION (53 of 86 remaining) [2021-08-30 17:55:34,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION (52 of 86 remaining) [2021-08-30 17:55:34,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION (51 of 86 remaining) [2021-08-30 17:55:34,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION (50 of 86 remaining) [2021-08-30 17:55:34,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION (49 of 86 remaining) [2021-08-30 17:55:34,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION (48 of 86 remaining) [2021-08-30 17:55:34,638 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION (47 of 86 remaining) [2021-08-30 17:55:34,638 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION (46 of 86 remaining) [2021-08-30 17:55:34,638 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION (45 of 86 remaining) [2021-08-30 17:55:34,638 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err0REQUIRES_VIOLATION (44 of 86 remaining) [2021-08-30 17:55:34,638 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err1REQUIRES_VIOLATION (43 of 86 remaining) [2021-08-30 17:55:34,638 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE (42 of 86 remaining) [2021-08-30 17:55:34,638 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE (41 of 86 remaining) [2021-08-30 17:55:34,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE (40 of 86 remaining) [2021-08-30 17:55:34,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE (39 of 86 remaining) [2021-08-30 17:55:34,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE (38 of 86 remaining) [2021-08-30 17:55:34,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE (37 of 86 remaining) [2021-08-30 17:55:34,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION (36 of 86 remaining) [2021-08-30 17:55:34,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION (35 of 86 remaining) [2021-08-30 17:55:34,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (34 of 86 remaining) [2021-08-30 17:55:34,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE (33 of 86 remaining) [2021-08-30 17:55:34,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE (32 of 86 remaining) [2021-08-30 17:55:34,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE (31 of 86 remaining) [2021-08-30 17:55:34,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE (30 of 86 remaining) [2021-08-30 17:55:34,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE (29 of 86 remaining) [2021-08-30 17:55:34,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION (28 of 86 remaining) [2021-08-30 17:55:34,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION (27 of 86 remaining) [2021-08-30 17:55:34,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION (26 of 86 remaining) [2021-08-30 17:55:34,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION (25 of 86 remaining) [2021-08-30 17:55:34,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION (24 of 86 remaining) [2021-08-30 17:55:34,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION (23 of 86 remaining) [2021-08-30 17:55:34,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION (22 of 86 remaining) [2021-08-30 17:55:34,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION (21 of 86 remaining) [2021-08-30 17:55:34,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE (20 of 86 remaining) [2021-08-30 17:55:34,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE (19 of 86 remaining) [2021-08-30 17:55:34,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE (18 of 86 remaining) [2021-08-30 17:55:34,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE (17 of 86 remaining) [2021-08-30 17:55:34,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE (16 of 86 remaining) [2021-08-30 17:55:34,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE (15 of 86 remaining) [2021-08-30 17:55:34,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION (14 of 86 remaining) [2021-08-30 17:55:34,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION (13 of 86 remaining) [2021-08-30 17:55:34,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION (12 of 86 remaining) [2021-08-30 17:55:34,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION (11 of 86 remaining) [2021-08-30 17:55:34,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION (10 of 86 remaining) [2021-08-30 17:55:34,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION (9 of 86 remaining) [2021-08-30 17:55:34,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION (8 of 86 remaining) [2021-08-30 17:55:34,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION (7 of 86 remaining) [2021-08-30 17:55:34,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION (6 of 86 remaining) [2021-08-30 17:55:34,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION (5 of 86 remaining) [2021-08-30 17:55:34,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err0REQUIRES_VIOLATION (4 of 86 remaining) [2021-08-30 17:55:34,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err1REQUIRES_VIOLATION (3 of 86 remaining) [2021-08-30 17:55:34,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE (2 of 86 remaining) [2021-08-30 17:55:34,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE (1 of 86 remaining) [2021-08-30 17:55:34,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE (0 of 86 remaining) [2021-08-30 17:55:34,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-08-30 17:55:34,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-08-30 17:55:35,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-30 17:55:35,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:55:35,258 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:55:35,260 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-30 17:55:35,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:55:35 BoogieIcfgContainer [2021-08-30 17:55:35,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:55:35,266 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:55:35,266 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:55:35,266 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:55:35,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:54:35" (3/4) ... [2021-08-30 17:55:35,272 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:55:35,272 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:55:35,273 INFO L158 Benchmark]: Toolchain (without parser) took 61102.32ms. Allocated memory was 58.7MB in the beginning and 94.4MB in the end (delta: 35.7MB). Free memory was 36.2MB in the beginning and 66.6MB in the end (delta: -30.5MB). Peak memory consumption was 52.5MB. Max. memory is 16.1GB. [2021-08-30 17:55:35,273 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory is still 41.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:55:35,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 533.60ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 36.0MB in the beginning and 55.6MB in the end (delta: -19.7MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2021-08-30 17:55:35,273 INFO L158 Benchmark]: Boogie Preprocessor took 53.92ms. Allocated memory is still 77.6MB. Free memory was 55.6MB in the beginning and 50.6MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-30 17:55:35,274 INFO L158 Benchmark]: RCFGBuilder took 496.07ms. Allocated memory is still 77.6MB. Free memory was 50.6MB in the beginning and 33.7MB in the end (delta: 16.9MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2021-08-30 17:55:35,274 INFO L158 Benchmark]: TraceAbstraction took 60006.61ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 33.3MB in the beginning and 21.4MB in the end (delta: 11.9MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2021-08-30 17:55:35,274 INFO L158 Benchmark]: Witness Printer took 6.85ms. Allocated memory is still 94.4MB. Free memory was 21.4MB in the beginning and 66.6MB in the end (delta: -45.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 17:55:35,275 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory is still 41.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 533.60ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 36.0MB in the beginning and 55.6MB in the end (delta: -19.7MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.92ms. Allocated memory is still 77.6MB. Free memory was 55.6MB in the beginning and 50.6MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 496.07ms. Allocated memory is still 77.6MB. Free memory was 50.6MB in the beginning and 33.7MB in the end (delta: 16.9MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * TraceAbstraction took 60006.61ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 33.3MB in the beginning and 21.4MB in the end (delta: 11.9MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Witness Printer took 6.85ms. Allocated memory is still 94.4MB. Free memory was 21.4MB in the beginning and 66.6MB in the end (delta: -45.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 792]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, overapproximation of memtrack at line 792. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L784] struct A a6; [L793] CALL entry_point() [L786] CALL, EXPR probe3_6(&a6) [L764] int ret = - -3; [L765] CALL, EXPR ldv_malloc(sizeof(int)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L768] CALL, EXPR f6() [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() [L768] ret = f6() [L769] COND TRUE ret<0 [L778] free(p) [L778] free(p) [L778] free(p) [L779] return ret; [L786] RET, EXPR probe3_6(&a6) [L786] int ret = probe3_6(&a6); [L787] COND FALSE !(ret==0) [L790] a6.p = 0 [L793] RET entry_point() - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 790]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 790]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 51 procedures, 379 locations, 86 error locations. Started 1 CEGAR loops. OverallTime: 59958.38ms, OverallIterations: 14, TraceHistogramMax: 1, EmptinessCheckTime: 19.01ms, AutomataDifference: 20728.36ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 7.25ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 592 SdHoareTripleChecker+Valid, 2196.11ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 581 mSDsluCounter, 535 SdHoareTripleChecker+Invalid, 1798.28ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 829 IncrementalHoareTripleChecker+Unchecked, 2107 mSDsCounter, 130 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2721 IncrementalHoareTripleChecker+Invalid, 3680 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 130 mSolverCounterUnsat, 182 mSDtfsCounter, 2721 mSolverCounterSat, 30.82ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 649 GetRequests, 500 SyntacticMatches, 41 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 28404.98ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=139occurred in iteration=0, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 84.36ms AutomataMinimizationTime, 13 MinimizatonAttempts, 90 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 124.68ms SsaConstructionTime, 245.93ms SatisfiabilityAnalysisTime, 13896.74ms InterpolantComputationTime, 318 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 610 ConstructedInterpolants, 87 QuantifiedInterpolants, 4524 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1436 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-30 17:55:35,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...