./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test1-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version ff03de63 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_test1-3.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 b629c59cb02331023154e63644c8b3df364c0289a571dc32bf43bc9966f32e99 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 18:08:58,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 18:08:58,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 18:08:58,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 18:08:58,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 18:08:58,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 18:08:58,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 18:08:58,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 18:08:58,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 18:08:58,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 18:08:58,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 18:08:58,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 18:08:58,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 18:08:58,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 18:08:58,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 18:08:58,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 18:08:58,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 18:08:58,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 18:08:58,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 18:08:58,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 18:08:58,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 18:08:58,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 18:08:58,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 18:08:58,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 18:08:58,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 18:08:58,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 18:08:58,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 18:08:58,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 18:08:58,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 18:08:58,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 18:08:58,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 18:08:58,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 18:08:58,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 18:08:58,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 18:08:58,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 18:08:58,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 18:08:58,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 18:08:58,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 18:08:58,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 18:08:58,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 18:08:58,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 18:08:58,658 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-21 18:08:58,683 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 18:08:58,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 18:08:58,684 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 18:08:58,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 18:08:58,685 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 18:08:58,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 18:08:58,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 18:08:58,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 18:08:58,686 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 18:08:58,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 18:08:58,687 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 18:08:58,687 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 18:08:58,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 18:08:58,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 18:08:58,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 18:08:58,688 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-21 18:08:58,688 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-21 18:08:58,688 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-21 18:08:58,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 18:08:58,688 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 18:08:58,688 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 18:08:58,688 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 18:08:58,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 18:08:58,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 18:08:58,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 18:08:58,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:08:58,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 18:08:58,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 18:08:58,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 18:08:58,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 18:08:58,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 18:08:58,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b629c59cb02331023154e63644c8b3df364c0289a571dc32bf43bc9966f32e99 [2021-12-21 18:08:58,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 18:08:58,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 18:08:58,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 18:08:58,873 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 18:08:58,874 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 18:08:58,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test1-3.i [2021-12-21 18:08:58,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5289f02cd/575cf56a981c48fa83cc435b07464ea0/FLAG54df5fa7a [2021-12-21 18:08:59,362 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 18:08:59,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test1-3.i [2021-12-21 18:08:59,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5289f02cd/575cf56a981c48fa83cc435b07464ea0/FLAG54df5fa7a [2021-12-21 18:08:59,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5289f02cd/575cf56a981c48fa83cc435b07464ea0 [2021-12-21 18:08:59,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 18:08:59,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 18:08:59,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 18:08:59,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 18:08:59,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 18:08:59,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:08:59" (1/1) ... [2021-12-21 18:08:59,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14221207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:08:59, skipping insertion in model container [2021-12-21 18:08:59,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:08:59" (1/1) ... [2021-12-21 18:08:59,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 18:08:59,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 18:08:59,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:08:59,811 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) [2021-12-21 18:08:59,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@15a8aee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:08:59, skipping insertion in model container [2021-12-21 18:08:59,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 18:08:59,813 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-21 18:08:59,815 INFO L158 Benchmark]: Toolchain (without parser) took 418.07ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 67.3MB in the beginning and 95.6MB in the end (delta: -28.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 18:08:59,816 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory was 55.6MB in the beginning and 55.6MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 18:08:59,817 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.59ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 67.0MB in the beginning and 95.6MB in the end (delta: -28.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 18:08:59,818 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory was 55.6MB in the beginning and 55.6MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.59ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 67.0MB in the beginning and 95.6MB in the end (delta: -28.5MB). Peak memory consumption was 8.4MB. 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test1-3.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 b629c59cb02331023154e63644c8b3df364c0289a571dc32bf43bc9966f32e99 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 18:09:01,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 18:09:01,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 18:09:01,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 18:09:01,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 18:09:01,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 18:09:01,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 18:09:01,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 18:09:01,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 18:09:01,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 18:09:01,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 18:09:01,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 18:09:01,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 18:09:01,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 18:09:01,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 18:09:01,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 18:09:01,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 18:09:01,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 18:09:01,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 18:09:01,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 18:09:01,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 18:09:01,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 18:09:01,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 18:09:01,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 18:09:01,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 18:09:01,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 18:09:01,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 18:09:01,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 18:09:01,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 18:09:01,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 18:09:01,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 18:09:01,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 18:09:01,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 18:09:01,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 18:09:01,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 18:09:01,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 18:09:01,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 18:09:01,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 18:09:01,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 18:09:01,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 18:09:01,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 18:09:01,394 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-21 18:09:01,415 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 18:09:01,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 18:09:01,416 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 18:09:01,416 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 18:09:01,417 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 18:09:01,417 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 18:09:01,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 18:09:01,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 18:09:01,418 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 18:09:01,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 18:09:01,419 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 18:09:01,419 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 18:09:01,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 18:09:01,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 18:09:01,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 18:09:01,420 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-21 18:09:01,420 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-21 18:09:01,420 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-21 18:09:01,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 18:09:01,420 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 18:09:01,421 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 18:09:01,421 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 18:09:01,421 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 18:09:01,421 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 18:09:01,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 18:09:01,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 18:09:01,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 18:09:01,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:09:01,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 18:09:01,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 18:09:01,422 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 18:09:01,422 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 18:09:01,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 18:09:01,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 18:09:01,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b629c59cb02331023154e63644c8b3df364c0289a571dc32bf43bc9966f32e99 [2021-12-21 18:09:01,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 18:09:01,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 18:09:01,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 18:09:01,709 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 18:09:01,709 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 18:09:01,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test1-3.i [2021-12-21 18:09:01,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6126869b/897415ca907741228becfdf84a36bb3d/FLAG7a771e202 [2021-12-21 18:09:02,158 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 18:09:02,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test1-3.i [2021-12-21 18:09:02,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6126869b/897415ca907741228becfdf84a36bb3d/FLAG7a771e202 [2021-12-21 18:09:02,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6126869b/897415ca907741228becfdf84a36bb3d [2021-12-21 18:09:02,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 18:09:02,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 18:09:02,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 18:09:02,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 18:09:02,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 18:09:02,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:09:02" (1/1) ... [2021-12-21 18:09:02,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5154346b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:09:02, skipping insertion in model container [2021-12-21 18:09:02,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:09:02" (1/1) ... [2021-12-21 18:09:02,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 18:09:02,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 18:09:02,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:09:02,936 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-21 18:09:02,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 18:09:03,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:09:03,010 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 18:09:03,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:09:03,095 INFO L208 MainTranslator]: Completed translation [2021-12-21 18:09:03,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:09:03 WrapperNode [2021-12-21 18:09:03,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 18:09:03,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 18:09:03,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 18:09:03,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 18:09:03,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:09:03" (1/1) ... [2021-12-21 18:09:03,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:09:03" (1/1) ... [2021-12-21 18:09:03,150 INFO L137 Inliner]: procedures = 165, calls = 69, calls flagged for inlining = 21, calls inlined = 3, statements flattened = 18 [2021-12-21 18:09:03,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 18:09:03,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 18:09:03,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 18:09:03,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 18:09:03,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:09:03" (1/1) ... [2021-12-21 18:09:03,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:09:03" (1/1) ... [2021-12-21 18:09:03,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:09:03" (1/1) ... [2021-12-21 18:09:03,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:09:03" (1/1) ... [2021-12-21 18:09:03,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:09:03" (1/1) ... [2021-12-21 18:09:03,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:09:03" (1/1) ... [2021-12-21 18:09:03,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:09:03" (1/1) ... [2021-12-21 18:09:03,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 18:09:03,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 18:09:03,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 18:09:03,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 18:09:03,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:09:03" (1/1) ... [2021-12-21 18:09:03,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:09:03,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:09:03,207 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) [2021-12-21 18:09:03,221 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 [2021-12-21 18:09:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 18:09:03,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 18:09:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 18:09:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 18:09:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 18:09:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 18:09:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 18:09:03,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 18:09:03,316 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 18:09:03,317 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 18:09:03,435 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 18:09:03,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 18:09:03,439 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 18:09:03,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:09:03 BoogieIcfgContainer [2021-12-21 18:09:03,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 18:09:03,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 18:09:03,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 18:09:03,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 18:09:03,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:09:02" (1/3) ... [2021-12-21 18:09:03,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4c276d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:09:03, skipping insertion in model container [2021-12-21 18:09:03,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:09:03" (2/3) ... [2021-12-21 18:09:03,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4c276d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:09:03, skipping insertion in model container [2021-12-21 18:09:03,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:09:03" (3/3) ... [2021-12-21 18:09:03,447 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test1-3.i [2021-12-21 18:09:03,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 18:09:03,450 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-21 18:09:03,483 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 18:09:03,494 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 18:09:03,494 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-21 18:09:03,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 16 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:09:03,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 18:09:03,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:09:03,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:09:03,510 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-21 18:09:03,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:09:03,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1841933483, now seen corresponding path program 1 times [2021-12-21 18:09:03,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:09:03,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097211520] [2021-12-21 18:09:03,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:09:03,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:09:03,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:09:03,526 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) [2021-12-21 18:09:03,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 18:09:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:09:03,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 18:09:03,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:09:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:09:03,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:09:03,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:09:03,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097211520] [2021-12-21 18:09:03,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097211520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:09:03,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:09:03,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:09:03,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217244828] [2021-12-21 18:09:03,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:09:03,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:09:03,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:09:03,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:09:03,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:09:03,716 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 16 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:09:03,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:09:03,739 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-12-21 18:09:03,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:09:03,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-12-21 18:09:03,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:09:03,746 INFO L225 Difference]: With dead ends: 18 [2021-12-21 18:09:03,746 INFO L226 Difference]: Without dead ends: 16 [2021-12-21 18:09:03,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:09:03,753 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:09:03,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 50 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:09:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-12-21 18:09:03,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-12-21 18:09:03,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:09:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-12-21 18:09:03,776 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2021-12-21 18:09:03,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:09:03,777 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-12-21 18:09:03,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:09:03,777 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-12-21 18:09:03,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-21 18:09:03,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:09:03,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:09:03,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-21 18:09:03,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:09:03,986 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-21 18:09:03,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:09:03,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1265363169, now seen corresponding path program 1 times [2021-12-21 18:09:03,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:09:03,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512612742] [2021-12-21 18:09:03,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:09:03,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:09:03,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:09:03,989 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) [2021-12-21 18:09:03,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-21 18:09:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:09:04,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 18:09:04,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:09:04,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:09:04,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:09:04,112 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:09:04,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512612742] [2021-12-21 18:09:04,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512612742] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:09:04,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:09:04,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:09:04,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272579808] [2021-12-21 18:09:04,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:09:04,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:09:04,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:09:04,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:09:04,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:09:04,115 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:09:04,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:09:04,170 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2021-12-21 18:09:04,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:09:04,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-12-21 18:09:04,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:09:04,171 INFO L225 Difference]: With dead ends: 26 [2021-12-21 18:09:04,172 INFO L226 Difference]: Without dead ends: 26 [2021-12-21 18:09:04,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:09:04,173 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:09:04,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 28 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:09:04,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-21 18:09:04,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2021-12-21 18:09:04,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 18:09:04,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-12-21 18:09:04,177 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 10 [2021-12-21 18:09:04,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:09:04,177 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-12-21 18:09:04,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:09:04,177 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-12-21 18:09:04,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-21 18:09:04,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:09:04,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:09:04,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-21 18:09:04,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:09:04,385 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-21 18:09:04,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:09:04,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1293992320, now seen corresponding path program 1 times [2021-12-21 18:09:04,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:09:04,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965138294] [2021-12-21 18:09:04,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:09:04,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:09:04,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:09:04,387 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) [2021-12-21 18:09:04,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-21 18:09:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:09:04,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 18:09:04,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:09:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:09:04,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:09:04,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:09:04,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965138294] [2021-12-21 18:09:04,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965138294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:09:04,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:09:04,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:09:04,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916784122] [2021-12-21 18:09:04,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:09:04,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:09:04,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:09:04,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:09:04,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:09:04,487 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:09:04,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:09:04,515 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2021-12-21 18:09:04,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:09:04,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-12-21 18:09:04,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:09:04,516 INFO L225 Difference]: With dead ends: 24 [2021-12-21 18:09:04,516 INFO L226 Difference]: Without dead ends: 24 [2021-12-21 18:09:04,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:09:04,517 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:09:04,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 49 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:09:04,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-21 18:09:04,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2021-12-21 18:09:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 18:09:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-12-21 18:09:04,520 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 10 [2021-12-21 18:09:04,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:09:04,520 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-12-21 18:09:04,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:09:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-12-21 18:09:04,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-21 18:09:04,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:09:04,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:09:04,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-21 18:09:04,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:09:04,728 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-21 18:09:04,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:09:04,728 INFO L85 PathProgramCache]: Analyzing trace with hash 571552621, now seen corresponding path program 1 times [2021-12-21 18:09:04,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:09:04,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384088659] [2021-12-21 18:09:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:09:04,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:09:04,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:09:04,730 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) [2021-12-21 18:09:04,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-21 18:09:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:09:04,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 18:09:04,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:09:04,794 INFO L387 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 [2021-12-21 18:09:04,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:09:04,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:09:04,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:09:04,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384088659] [2021-12-21 18:09:04,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384088659] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:09:04,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:09:04,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:09:04,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756650043] [2021-12-21 18:09:04,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:09:04,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:09:04,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:09:04,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:09:04,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:09:04,816 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:09:04,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:09:04,834 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-12-21 18:09:04,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:09:04,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-21 18:09:04,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:09:04,835 INFO L225 Difference]: With dead ends: 20 [2021-12-21 18:09:04,835 INFO L226 Difference]: Without dead ends: 20 [2021-12-21 18:09:04,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:09:04,836 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:09:04,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:09:04,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-12-21 18:09:04,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2021-12-21 18:09:04,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:09:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-12-21 18:09:04,837 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2021-12-21 18:09:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:09:04,838 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-12-21 18:09:04,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:09:04,838 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-12-21 18:09:04,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-21 18:09:04,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:09:04,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:09:04,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-21 18:09:05,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:09:05,050 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-21 18:09:05,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:09:05,050 INFO L85 PathProgramCache]: Analyzing trace with hash -493743568, now seen corresponding path program 1 times [2021-12-21 18:09:05,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:09:05,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449559012] [2021-12-21 18:09:05,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:09:05,051 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:09:05,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:09:05,052 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) [2021-12-21 18:09:05,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-21 18:09:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:09:05,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 18:09:05,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:09:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:09:05,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:09:05,216 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:09:05,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449559012] [2021-12-21 18:09:05,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449559012] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:09:05,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:09:05,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 18:09:05,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011992599] [2021-12-21 18:09:05,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:09:05,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 18:09:05,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:09:05,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 18:09:05,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-21 18:09:05,218 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:09:05,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:09:05,241 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-12-21 18:09:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 18:09:05,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-21 18:09:05,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:09:05,242 INFO L225 Difference]: With dead ends: 22 [2021-12-21 18:09:05,242 INFO L226 Difference]: Without dead ends: 14 [2021-12-21 18:09:05,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-21 18:09:05,243 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:09:05,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 49 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 30 Unchecked, 0.0s Time] [2021-12-21 18:09:05,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-21 18:09:05,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-21 18:09:05,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:09:05,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2021-12-21 18:09:05,245 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2021-12-21 18:09:05,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:09:05,245 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2021-12-21 18:09:05,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:09:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2021-12-21 18:09:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-21 18:09:05,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:09:05,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:09:05,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-21 18:09:05,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:09:05,451 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-21 18:09:05,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:09:05,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1993769265, now seen corresponding path program 1 times [2021-12-21 18:09:05,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:09:05,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767254497] [2021-12-21 18:09:05,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:09:05,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:09:05,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:09:05,453 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) [2021-12-21 18:09:05,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-21 18:09:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:09:05,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 18:09:05,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:09:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:09:05,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:09:05,566 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:09:05,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767254497] [2021-12-21 18:09:05,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767254497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:09:05,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:09:05,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 18:09:05,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511677345] [2021-12-21 18:09:05,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:09:05,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 18:09:05,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:09:05,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 18:09:05,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-21 18:09:05,568 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:09:05,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:09:05,594 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-12-21 18:09:05,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 18:09:05,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-21 18:09:05,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:09:05,595 INFO L225 Difference]: With dead ends: 13 [2021-12-21 18:09:05,595 INFO L226 Difference]: Without dead ends: 0 [2021-12-21 18:09:05,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 18:09:05,596 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:09:05,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 21 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:09:05,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-21 18:09:05,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-21 18:09:05,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:09:05,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-21 18:09:05,597 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-12-21 18:09:05,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:09:05,598 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 18:09:05,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:09:05,598 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-21 18:09:05,598 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-21 18:09:05,600 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE (3 of 4 remaining) [2021-12-21 18:09:05,600 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (2 of 4 remaining) [2021-12-21 18:09:05,600 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (1 of 4 remaining) [2021-12-21 18:09:05,600 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2021-12-21 18:09:05,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-21 18:09:05,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:09:05,809 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-21 18:09:05,810 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 18:09:05,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 06:09:05 BoogieIcfgContainer [2021-12-21 18:09:05,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 18:09:05,812 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 18:09:05,812 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 18:09:05,812 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 18:09:05,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:09:03" (3/4) ... [2021-12-21 18:09:05,814 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-21 18:09:05,817 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2021-12-21 18:09:05,819 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-12-21 18:09:05,819 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-21 18:09:05,820 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-21 18:09:05,835 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 18:09:05,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 18:09:05,835 INFO L158 Benchmark]: Toolchain (without parser) took 3305.06ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 40.0MB in the beginning and 40.9MB in the end (delta: -811.2kB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-21 18:09:05,836 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory was 41.7MB in the beginning and 41.6MB in the end (delta: 32.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 18:09:05,836 INFO L158 Benchmark]: CACSL2BoogieTranslator took 562.26ms. Allocated memory is still 60.8MB. Free memory was 39.8MB in the beginning and 25.9MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-21 18:09:05,836 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.57ms. Allocated memory is still 60.8MB. Free memory was 25.7MB in the beginning and 41.3MB in the end (delta: -15.6MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2021-12-21 18:09:05,836 INFO L158 Benchmark]: Boogie Preprocessor took 30.49ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 40.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 18:09:05,836 INFO L158 Benchmark]: RCFGBuilder took 260.12ms. Allocated memory is still 60.8MB. Free memory was 40.1MB in the beginning and 30.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 18:09:05,836 INFO L158 Benchmark]: TraceAbstraction took 2367.94ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 29.8MB in the beginning and 43.7MB in the end (delta: -13.8MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2021-12-21 18:09:05,837 INFO L158 Benchmark]: Witness Printer took 23.40ms. Allocated memory is still 81.8MB. Free memory was 43.7MB in the beginning and 40.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-21 18:09:05,838 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory was 41.7MB in the beginning and 41.6MB in the end (delta: 32.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 562.26ms. Allocated memory is still 60.8MB. Free memory was 39.8MB in the beginning and 25.9MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.57ms. Allocated memory is still 60.8MB. Free memory was 25.7MB in the beginning and 41.3MB in the end (delta: -15.6MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.49ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 40.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 260.12ms. Allocated memory is still 60.8MB. Free memory was 40.1MB in the beginning and 30.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2367.94ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 29.8MB in the beginning and 43.7MB in the end (delta: -13.8MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Witness Printer took 23.40ms. Allocated memory is still 81.8MB. Free memory was 43.7MB in the beginning and 40.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 759]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 759]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 759]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 761]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 62 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 226 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 30 IncrementalHoareTripleChecker+Unchecked, 151 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 141 IncrementalHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 75 mSDtfsCounter, 141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=2, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 8 QuantifiedInterpolants, 371 SizeOfPredicates, 2 NumberOfNonLiveVariables, 227 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-21 18:09:05,863 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE