./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5be2e30df948ebd6000c3afde848283ab7f83dcc ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5be2e30df948ebd6000c3afde848283ab7f83dcc .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:48:13,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:48:13,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:48:13,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:48:13,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:48:13,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:48:13,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:48:13,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:48:13,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:48:13,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:48:13,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:48:13,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:48:13,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:48:13,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:48:13,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:48:13,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:48:13,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:48:13,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:48:13,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:48:13,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:48:13,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:48:13,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:48:13,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:48:13,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:48:13,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:48:13,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:48:13,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:48:13,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:48:13,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:48:13,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:48:13,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:48:13,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:48:13,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:48:13,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:48:13,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:48:13,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:48:13,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:48:13,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:48:13,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:48:13,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:48:13,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:48:13,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 17:48:13,832 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:48:13,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:48:13,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:48:13,833 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:48:13,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:48:13,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:48:13,835 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:48:13,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:48:13,835 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:48:13,835 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:48:13,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:48:13,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:48:13,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:48:13,836 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:48:13,836 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:48:13,836 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:48:13,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:48:13,837 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:48:13,837 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:48:13,837 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:48:13,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:48:13,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:48:13,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:48:13,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:48:13,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:48:13,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:48:13,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 17:48:13,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 17:48:13,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:48:13,838 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5be2e30df948ebd6000c3afde848283ab7f83dcc [2021-08-30 17:48:14,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:48:14,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:48:14,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:48:14,078 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:48:14,079 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:48:14,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2021-08-30 17:48:14,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08ead396e/1656baea52dc4c72bf4a20a8356e06d3/FLAG4498c2dd7 [2021-08-30 17:48:14,541 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:48:14,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2021-08-30 17:48:14,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08ead396e/1656baea52dc4c72bf4a20a8356e06d3/FLAG4498c2dd7 [2021-08-30 17:48:14,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08ead396e/1656baea52dc4c72bf4a20a8356e06d3 [2021-08-30 17:48:14,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:48:14,560 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:48:14,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:48:14,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:48:14,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:48:14,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:48:14" (1/1) ... [2021-08-30 17:48:14,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6988c94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:14, skipping insertion in model container [2021-08-30 17:48:14,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:48:14" (1/1) ... [2021-08-30 17:48:14,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:48:14,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:48:14,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:48:14,928 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-08-30 17:48:14,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@145dd904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:14, skipping insertion in model container [2021-08-30 17:48:14,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:48:14,929 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-30 17:48:14,931 INFO L158 Benchmark]: Toolchain (without parser) took 369.71ms. Allocated memory is still 58.7MB. Free memory was 35.8MB in the beginning and 38.7MB in the end (delta: -3.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 17:48:14,932 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 40.7MB in the end (delta: 46.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:48:14,933 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.96ms. Allocated memory is still 58.7MB. Free memory was 35.5MB in the beginning and 38.7MB in the end (delta: -3.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 17:48:14,935 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 40.7MB in the end (delta: 46.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 367.96ms. Allocated memory is still 58.7MB. Free memory was 35.5MB in the beginning and 38.7MB in the end (delta: -3.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:48:16,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:48:16,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:48:16,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:48:16,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:48:16,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:48:16,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:48:16,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:48:16,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:48:16,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:48:16,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:48:16,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:48:16,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:48:16,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:48:16,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:48:16,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:48:16,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:48:16,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:48:16,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:48:16,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:48:16,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:48:16,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:48:16,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:48:16,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:48:16,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:48:16,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:48:16,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:48:16,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:48:16,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:48:16,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:48:16,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:48:16,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:48:16,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:48:16,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:48:16,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:48:16,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:48:16,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:48:16,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:48:16,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:48:16,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:48:16,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:48:16,403 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 17:48:16,435 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:48:16,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:48:16,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:48:16,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:48:16,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:48:16,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:48:16,438 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:48:16,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:48:16,438 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:48:16,438 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:48:16,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:48:16,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:48:16,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:48:16,439 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:48:16,440 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:48:16,440 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:48:16,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:48:16,440 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:48:16,440 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 17:48:16,440 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 17:48:16,441 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:48:16,441 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:48:16,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:48:16,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:48:16,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:48:16,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:48:16,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:48:16,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:48:16,442 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 17:48:16,442 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 17:48:16,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:48:16,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 17:48:16,443 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5be2e30df948ebd6000c3afde848283ab7f83dcc [2021-08-30 17:48:16,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:48:16,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:48:16,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:48:16,749 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:48:16,749 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:48:16,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2021-08-30 17:48:16,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c83c938dd/693eb04dba1b4e15a3208a24cec3a04f/FLAGb469e6971 [2021-08-30 17:48:17,149 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:48:17,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2021-08-30 17:48:17,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c83c938dd/693eb04dba1b4e15a3208a24cec3a04f/FLAGb469e6971 [2021-08-30 17:48:17,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c83c938dd/693eb04dba1b4e15a3208a24cec3a04f [2021-08-30 17:48:17,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:48:17,524 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:48:17,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:48:17,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:48:17,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:48:17,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:48:17" (1/1) ... [2021-08-30 17:48:17,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50224831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:17, skipping insertion in model container [2021-08-30 17:48:17,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:48:17" (1/1) ... [2021-08-30 17:48:17,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:48:17,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:48:17,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:48:17,854 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-30 17:48:17,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:48:17,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:48:17,893 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:48:17,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:48:17,971 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:48:17,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:17 WrapperNode [2021-08-30 17:48:17,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:48:17,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:48:17,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:48:17,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:48:17,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:17" (1/1) ... [2021-08-30 17:48:17,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:17" (1/1) ... [2021-08-30 17:48:18,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:17" (1/1) ... [2021-08-30 17:48:18,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:17" (1/1) ... [2021-08-30 17:48:18,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:17" (1/1) ... [2021-08-30 17:48:18,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:17" (1/1) ... [2021-08-30 17:48:18,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:17" (1/1) ... [2021-08-30 17:48:18,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:48:18,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:48:18,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:48:18,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:48:18,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:17" (1/1) ... [2021-08-30 17:48:18,053 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:48:18,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:48:18,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 17:48:18,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 17:48:18,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:48:18,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:48:18,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-08-30 17:48:18,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:48:18,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:48:18,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:48:18,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:48:18,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:48:18,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:48:18,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-08-30 17:48:18,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-08-30 17:48:18,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-08-30 17:48:18,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-08-30 17:48:18,099 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-08-30 17:48:18,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-08-30 17:48:18,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-08-30 17:48:18,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-08-30 17:48:18,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-08-30 17:48:18,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-08-30 17:48:18,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-08-30 17:48:18,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-08-30 17:48:18,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-08-30 17:48:18,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-08-30 17:48:18,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-08-30 17:48:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-08-30 17:48:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-08-30 17:48:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-08-30 17:48:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-08-30 17:48:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-08-30 17:48:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-08-30 17:48:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-08-30 17:48:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-08-30 17:48:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-08-30 17:48:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-08-30 17:48:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-08-30 17:48:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-08-30 17:48:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-08-30 17:48:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-08-30 17:48:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-08-30 17:48:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-08-30 17:48:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-08-30 17:48:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-08-30 17:48:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_17 [2021-08-30 17:48:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure free_17 [2021-08-30 17:48:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-08-30 17:48:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:48:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-30 17:48:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-08-30 17:48:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-08-30 17:48:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:48:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:48:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:48:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:48:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:48:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:48:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:48:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:48:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:48:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:48:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:48:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:48:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:48:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:48:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:48:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:48:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:48:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:48:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:48:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:48:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:48:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:48:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:48:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:48:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:48:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:48:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:48:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:48:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:48:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:48:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:48:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:48:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:48:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:48:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:48:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:48:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:48:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:48:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:48:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:48:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:48:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:48:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:48:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:48:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:48:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:48:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:48:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:48:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:48:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:48:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:48:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:48:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:48:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:48:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:48:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:48:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:48:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:48:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:48:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:48:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:48:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:48:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:48:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:48:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:48:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:48:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:48:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:48:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:48:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:48:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:48:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:48:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:48:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:48:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:48:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:48:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:48:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:48:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:48:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:48:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:48:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:48:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:48:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:48:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:48:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:48:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:48:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:48:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:48:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:48:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:48:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:48:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:48:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:48:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:48:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:48:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:48:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:48:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:48:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:48:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:48:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:48:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:48:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:48:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:48:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:48:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:48:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-08-30 17:48:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:48:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-08-30 17:48:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-08-30 17:48:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-30 17:48:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-30 17:48:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-08-30 17:48:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:48:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-08-30 17:48:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-08-30 17:48:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-08-30 17:48:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:48:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-08-30 17:48:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-08-30 17:48:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-08-30 17:48:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:48:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-08-30 17:48:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-08-30 17:48:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-08-30 17:48:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-08-30 17:48:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-08-30 17:48:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-08-30 17:48:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:48:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-08-30 17:48:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-08-30 17:48:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-08-30 17:48:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-08-30 17:48:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-08-30 17:48:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-30 17:48:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-30 17:48:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-08-30 17:48:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-08-30 17:48:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-08-30 17:48:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-08-30 17:48:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-08-30 17:48:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-08-30 17:48:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-08-30 17:48:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-08-30 17:48:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-08-30 17:48:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-08-30 17:48:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-08-30 17:48:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-08-30 17:48:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-08-30 17:48:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-08-30 17:48:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-30 17:48:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-08-30 17:48:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-08-30 17:48:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_17 [2021-08-30 17:48:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure free_17 [2021-08-30 17:48:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-08-30 17:48:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:48:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:48:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:48:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-30 17:48:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:48:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:48:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-08-30 17:48:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-08-30 17:48:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-08-30 17:48:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-08-30 17:48:18,425 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:48:18,484 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:48:18,597 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:48:18,599 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-30 17:48:18,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:48:18 BoogieIcfgContainer [2021-08-30 17:48:18,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:48:18,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:48:18,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:48:18,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:48:18,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:48:17" (1/3) ... [2021-08-30 17:48:18,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd32577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:48:18, skipping insertion in model container [2021-08-30 17:48:18,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:17" (2/3) ... [2021-08-30 17:48:18,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd32577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:48:18, skipping insertion in model container [2021-08-30 17:48:18,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:48:18" (3/3) ... [2021-08-30 17:48:18,608 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test17_1-2.i [2021-08-30 17:48:18,611 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:48:18,612 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 90 error locations. [2021-08-30 17:48:18,638 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:48:18,643 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 17:48:18,643 INFO L340 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2021-08-30 17:48:18,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 83 states have (on average 1.6385542168674698) internal successors, (136), 120 states have internal predecessors, (136), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-08-30 17:48:18,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 17:48:18,678 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:48:18,678 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:48:18,678 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-30 17:48:18,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:48:18,685 INFO L82 PathProgramCache]: Analyzing trace with hash -67233649, now seen corresponding path program 1 times [2021-08-30 17:48:18,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:48:18,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091154945] [2021-08-30 17:48:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:48:18,693 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:48:18,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:48:18,704 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:48:18,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-30 17:48:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:48:18,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:48:18,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:48:18,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:48:19,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:48:19,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:48:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:48:19,092 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:48:19,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091154945] [2021-08-30 17:48:19,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091154945] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:48:19,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:48:19,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-30 17:48:19,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892433546] [2021-08-30 17:48:19,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:48:19,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:48:19,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:48:19,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:48:19,123 INFO L87 Difference]: Start difference. First operand has 147 states, 83 states have (on average 1.6385542168674698) internal successors, (136), 120 states have internal predecessors, (136), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:48:19,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:48:19,404 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2021-08-30 17:48:19,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:48:19,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-08-30 17:48:19,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:48:19,411 INFO L225 Difference]: With dead ends: 87 [2021-08-30 17:48:19,411 INFO L226 Difference]: Without dead ends: 84 [2021-08-30 17:48:19,413 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.64ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:48:19,419 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 202.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.04ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 249.48ms IncrementalHoareTripleChecker+Time [2021-08-30 17:48:19,422 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 48 Invalid, 290 Unknown, 0 Unchecked, 7.04ms Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 249.48ms Time] [2021-08-30 17:48:19,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-30 17:48:19,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2021-08-30 17:48:19,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 66 states have internal predecessors, (76), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-30 17:48:19,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2021-08-30 17:48:19,457 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 16 [2021-08-30 17:48:19,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:48:19,458 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2021-08-30 17:48:19,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:48:19,458 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2021-08-30 17:48:19,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 17:48:19,460 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:48:19,460 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:48:19,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-30 17:48:19,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:48:19,667 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-30 17:48:19,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:48:19,667 INFO L82 PathProgramCache]: Analyzing trace with hash -67233648, now seen corresponding path program 1 times [2021-08-30 17:48:19,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:48:19,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162348109] [2021-08-30 17:48:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:48:19,668 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:48:19,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:48:19,669 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:48:19,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-30 17:48:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:48:19,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 17:48:19,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:48:19,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:48:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:48:19,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:48:20,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:48:20,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:48:20,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162348109] [2021-08-30 17:48:20,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162348109] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:48:20,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:48:20,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-08-30 17:48:20,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806686957] [2021-08-30 17:48:20,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 17:48:20,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:48:20,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 17:48:20,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-08-30 17:48:20,391 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:48:21,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:48:21,450 INFO L93 Difference]: Finished difference Result 93 states and 108 transitions. [2021-08-30 17:48:21,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:48:21,451 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 16 [2021-08-30 17:48:21,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:48:21,452 INFO L225 Difference]: With dead ends: 93 [2021-08-30 17:48:21,452 INFO L226 Difference]: Without dead ends: 93 [2021-08-30 17:48:21,453 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 430.95ms TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-08-30 17:48:21,453 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 65 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 766.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.15ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 880.12ms IncrementalHoareTripleChecker+Time [2021-08-30 17:48:21,454 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 111 Invalid, 763 Unknown, 0 Unchecked, 4.15ms Time], IncrementalHoareTripleChecker [19 Valid, 575 Invalid, 0 Unknown, 169 Unchecked, 880.12ms Time] [2021-08-30 17:48:21,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-30 17:48:21,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2021-08-30 17:48:21,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 71 states have internal predecessors, (82), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-30 17:48:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2021-08-30 17:48:21,460 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 16 [2021-08-30 17:48:21,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:48:21,461 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2021-08-30 17:48:21,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:48:21,461 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2021-08-30 17:48:21,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 17:48:21,461 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:48:21,462 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:48:21,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-08-30 17:48:21,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:48:21,667 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-30 17:48:21,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:48:21,668 INFO L82 PathProgramCache]: Analyzing trace with hash 820270032, now seen corresponding path program 1 times [2021-08-30 17:48:21,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:48:21,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851248506] [2021-08-30 17:48:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:48:21,669 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:48:21,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:48:21,677 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:48:21,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-30 17:48:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:48:21,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 17:48:21,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:48:21,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:48:21,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:48:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:48:21,905 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:48:21,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851248506] [2021-08-30 17:48:21,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851248506] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:48:21,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:48:21,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 17:48:21,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898288452] [2021-08-30 17:48:21,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:48:21,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:48:21,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:48:21,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:48:21,907 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:48:22,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:48:22,118 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2021-08-30 17:48:22,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:48:22,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-08-30 17:48:22,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:48:22,120 INFO L225 Difference]: With dead ends: 84 [2021-08-30 17:48:22,120 INFO L226 Difference]: Without dead ends: 84 [2021-08-30 17:48:22,120 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.60ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:48:22,121 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.37ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 202.54ms IncrementalHoareTripleChecker+Time [2021-08-30 17:48:22,121 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 59 Invalid, 276 Unknown, 0 Unchecked, 1.37ms Time], IncrementalHoareTripleChecker [1 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 202.54ms Time] [2021-08-30 17:48:22,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-30 17:48:22,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2021-08-30 17:48:22,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 50 states have (on average 1.52) internal successors, (76), 68 states have internal predecessors, (76), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-30 17:48:22,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2021-08-30 17:48:22,133 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 16 [2021-08-30 17:48:22,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:48:22,133 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2021-08-30 17:48:22,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:48:22,134 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2021-08-30 17:48:22,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 17:48:22,134 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:48:22,134 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:48:22,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-30 17:48:22,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:48:22,335 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-30 17:48:22,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:48:22,335 INFO L82 PathProgramCache]: Analyzing trace with hash -2083416263, now seen corresponding path program 1 times [2021-08-30 17:48:22,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:48:22,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511058786] [2021-08-30 17:48:22,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:48:22,336 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:48:22,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:48:22,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:48:22,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-30 17:48:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:48:22,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:48:22,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:48:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:48:22,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:48:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:48:22,540 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:48:22,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511058786] [2021-08-30 17:48:22,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511058786] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:48:22,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:48:22,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 17:48:22,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304587911] [2021-08-30 17:48:22,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:48:22,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:48:22,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:48:22,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:48:22,542 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:48:22,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:48:22,728 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2021-08-30 17:48:22,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:48:22,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2021-08-30 17:48:22,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:48:22,730 INFO L225 Difference]: With dead ends: 84 [2021-08-30 17:48:22,730 INFO L226 Difference]: Without dead ends: 84 [2021-08-30 17:48:22,730 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.15ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:48:22,730 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 14 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 152.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 180.83ms IncrementalHoareTripleChecker+Time [2021-08-30 17:48:22,731 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 54 Invalid, 257 Unknown, 0 Unchecked, 1.04ms Time], IncrementalHoareTripleChecker [0 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 180.83ms Time] [2021-08-30 17:48:22,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-30 17:48:22,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2021-08-30 17:48:22,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 50 states have (on average 1.5) internal successors, (75), 68 states have internal predecessors, (75), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-30 17:48:22,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-08-30 17:48:22,734 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 17 [2021-08-30 17:48:22,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:48:22,735 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-08-30 17:48:22,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:48:22,736 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-08-30 17:48:22,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 17:48:22,736 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:48:22,736 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:48:22,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-30 17:48:22,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:48:22,941 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-30 17:48:22,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:48:22,941 INFO L82 PathProgramCache]: Analyzing trace with hash -340605928, now seen corresponding path program 1 times [2021-08-30 17:48:22,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:48:22,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33614539] [2021-08-30 17:48:22,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:48:22,942 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:48:22,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:48:22,942 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:48:22,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-30 17:48:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:48:23,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 17:48:23,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:48:23,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:48:23,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:48:23,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:48:23,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:48:23,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33614539] [2021-08-30 17:48:23,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33614539] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:48:23,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:48:23,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 17:48:23,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637313099] [2021-08-30 17:48:23,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:48:23,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:48:23,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:48:23,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:48:23,147 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:48:23,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:48:23,319 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2021-08-30 17:48:23,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:48:23,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2021-08-30 17:48:23,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:48:23,320 INFO L225 Difference]: With dead ends: 120 [2021-08-30 17:48:23,320 INFO L226 Difference]: Without dead ends: 115 [2021-08-30 17:48:23,320 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:48:23,321 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 36 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.89ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 166.17ms IncrementalHoareTripleChecker+Time [2021-08-30 17:48:23,321 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 16 Invalid, 166 Unknown, 0 Unchecked, 0.89ms Time], IncrementalHoareTripleChecker [6 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 166.17ms Time] [2021-08-30 17:48:23,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-30 17:48:23,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 80. [2021-08-30 17:48:23,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 67 states have internal predecessors, (73), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-30 17:48:23,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2021-08-30 17:48:23,329 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 17 [2021-08-30 17:48:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:48:23,329 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2021-08-30 17:48:23,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:48:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2021-08-30 17:48:23,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 17:48:23,330 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:48:23,330 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:48:23,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-30 17:48:23,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:48:23,533 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-30 17:48:23,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:48:23,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1976385840, now seen corresponding path program 1 times [2021-08-30 17:48:23,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:48:23,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540059645] [2021-08-30 17:48:23,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:48:23,534 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:48:23,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:48:23,534 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:48:23,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-30 17:48:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:48:23,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-30 17:48:23,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:48:23,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:48:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:48:23,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:48:24,639 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:48:24,639 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:48:24,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540059645] [2021-08-30 17:48:24,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540059645] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:48:24,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:48:24,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-08-30 17:48:24,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973626726] [2021-08-30 17:48:24,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-30 17:48:24,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:48:24,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-30 17:48:24,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-08-30 17:48:24,641 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:48:26,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:48:26,277 INFO L93 Difference]: Finished difference Result 95 states and 107 transitions. [2021-08-30 17:48:26,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 17:48:26,278 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2021-08-30 17:48:26,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:48:26,278 INFO L225 Difference]: With dead ends: 95 [2021-08-30 17:48:26,279 INFO L226 Difference]: Without dead ends: 95 [2021-08-30 17:48:26,279 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 908.29ms TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2021-08-30 17:48:26,280 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 64 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1153.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.22ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 1298.11ms IncrementalHoareTripleChecker+Time [2021-08-30 17:48:26,280 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 138 Invalid, 958 Unknown, 0 Unchecked, 5.22ms Time], IncrementalHoareTripleChecker [25 Valid, 769 Invalid, 0 Unknown, 164 Unchecked, 1298.11ms Time] [2021-08-30 17:48:26,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-08-30 17:48:26,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92. [2021-08-30 17:48:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 60 states have (on average 1.45) internal successors, (87), 79 states have internal predecessors, (87), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-30 17:48:26,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2021-08-30 17:48:26,284 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 22 [2021-08-30 17:48:26,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:48:26,284 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2021-08-30 17:48:26,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:48:26,285 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2021-08-30 17:48:26,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-30 17:48:26,286 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:48:26,286 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:48:26,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-30 17:48:26,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:48:26,489 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-30 17:48:26,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:48:26,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1887639459, now seen corresponding path program 1 times [2021-08-30 17:48:26,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:48:26,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291027057] [2021-08-30 17:48:26,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:48:26,490 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:48:26,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:48:26,490 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:48:26,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-30 17:48:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:48:26,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 17:48:26,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:48:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:48:26,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:48:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:48:26,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:48:26,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291027057] [2021-08-30 17:48:26,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291027057] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:48:26,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:48:26,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-08-30 17:48:26,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922286255] [2021-08-30 17:48:26,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 17:48:26,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:48:26,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 17:48:26,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-30 17:48:26,838 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-30 17:48:27,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:48:27,300 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2021-08-30 17:48:27,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 17:48:27,300 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 35 [2021-08-30 17:48:27,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:48:27,301 INFO L225 Difference]: With dead ends: 98 [2021-08-30 17:48:27,301 INFO L226 Difference]: Without dead ends: 98 [2021-08-30 17:48:27,301 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 158.10ms TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2021-08-30 17:48:27,301 INFO L928 BasicCegarLoop]: 13 mSDtfsCounter, 48 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 329.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.17ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 386.94ms IncrementalHoareTripleChecker+Time [2021-08-30 17:48:27,302 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 73 Invalid, 500 Unknown, 0 Unchecked, 2.17ms Time], IncrementalHoareTripleChecker [16 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 386.94ms Time] [2021-08-30 17:48:27,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-08-30 17:48:27,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2021-08-30 17:48:27,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 84 states have internal predecessors, (90), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-30 17:48:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2021-08-30 17:48:27,306 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 35 [2021-08-30 17:48:27,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:48:27,307 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 104 transitions. [2021-08-30 17:48:27,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-30 17:48:27,307 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 104 transitions. [2021-08-30 17:48:27,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-30 17:48:27,307 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:48:27,308 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:48:27,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-30 17:48:27,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:48:27,514 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-30 17:48:27,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:48:27,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1668351152, now seen corresponding path program 2 times [2021-08-30 17:48:27,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:48:27,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212328731] [2021-08-30 17:48:27,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 17:48:27,515 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:48:27,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:48:27,517 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:48:27,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-30 17:48:27,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 17:48:27,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:48:27,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-30 17:48:27,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:48:27,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:48:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:48:28,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:48:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:48:29,884 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:48:29,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212328731] [2021-08-30 17:48:29,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212328731] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:48:29,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:48:29,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-08-30 17:48:29,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887261572] [2021-08-30 17:48:29,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-08-30 17:48:29,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:48:29,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-08-30 17:48:29,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-08-30 17:48:29,885 INFO L87 Difference]: Start difference. First operand 97 states and 104 transitions. Second operand has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:48:34,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:48:34,511 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2021-08-30 17:48:34,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-30 17:48:34,512 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2021-08-30 17:48:34,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:48:34,513 INFO L225 Difference]: With dead ends: 116 [2021-08-30 17:48:34,513 INFO L226 Difference]: Without dead ends: 116 [2021-08-30 17:48:34,514 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 3599.66ms TimeCoverageRelationStatistics Valid=475, Invalid=1331, Unknown=0, NotChecked=0, Total=1806 [2021-08-30 17:48:34,514 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 234 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2154.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.61ms SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 2383.54ms IncrementalHoareTripleChecker+Time [2021-08-30 17:48:34,514 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 117 Invalid, 1362 Unknown, 0 Unchecked, 5.61ms Time], IncrementalHoareTripleChecker [112 Valid, 1054 Invalid, 0 Unknown, 196 Unchecked, 2383.54ms Time] [2021-08-30 17:48:34,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-30 17:48:34,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-30 17:48:34,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 103 states have internal predecessors, (114), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-30 17:48:34,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2021-08-30 17:48:34,518 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 34 [2021-08-30 17:48:34,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:48:34,519 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2021-08-30 17:48:34,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:48:34,519 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2021-08-30 17:48:34,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-30 17:48:34,520 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:48:34,520 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:48:34,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-08-30 17:48:34,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:48:34,729 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting free_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-30 17:48:34,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:48:34,730 INFO L82 PathProgramCache]: Analyzing trace with hash 355937783, now seen corresponding path program 2 times [2021-08-30 17:48:34,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:48:34,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647664828] [2021-08-30 17:48:34,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 17:48:34,730 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:48:34,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:48:34,731 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:48:34,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-30 17:48:34,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-30 17:48:34,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:48:34,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 17:48:34,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:48:34,928 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-08-30 17:48:34,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:48:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-08-30 17:48:35,051 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:48:35,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647664828] [2021-08-30 17:48:35,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647664828] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:48:35,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:48:35,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-08-30 17:48:35,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200414539] [2021-08-30 17:48:35,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 17:48:35,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:48:35,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 17:48:35,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:48:35,059 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 17:48:35,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:48:35,290 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2021-08-30 17:48:35,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:48:35,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2021-08-30 17:48:35,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:48:35,292 INFO L225 Difference]: With dead ends: 147 [2021-08-30 17:48:35,292 INFO L226 Difference]: Without dead ends: 144 [2021-08-30 17:48:35,292 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.26ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:48:35,292 INFO L928 BasicCegarLoop]: 13 mSDtfsCounter, 89 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 186.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.27ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 218.77ms IncrementalHoareTripleChecker+Time [2021-08-30 17:48:35,292 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 45 Invalid, 266 Unknown, 0 Unchecked, 1.27ms Time], IncrementalHoareTripleChecker [2 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 218.77ms Time] [2021-08-30 17:48:35,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-08-30 17:48:35,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 117. [2021-08-30 17:48:35,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 85 states have (on average 1.3529411764705883) internal successors, (115), 104 states have internal predecessors, (115), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-30 17:48:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 129 transitions. [2021-08-30 17:48:35,296 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 129 transitions. Word has length 50 [2021-08-30 17:48:35,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:48:35,296 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 129 transitions. [2021-08-30 17:48:35,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 17:48:35,297 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 129 transitions. [2021-08-30 17:48:35,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-30 17:48:35,298 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:48:35,298 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:48:35,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-08-30 17:48:35,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:48:35,505 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting alloc_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-30 17:48:35,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:48:35,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1622715602, now seen corresponding path program 1 times [2021-08-30 17:48:35,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:48:35,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094069754] [2021-08-30 17:48:35,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:48:35,506 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:48:35,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:48:35,506 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:48:35,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-30 17:48:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:48:35,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 17:48:35,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:48:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 4 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:48:35,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:48:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-30 17:48:36,168 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:48:36,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094069754] [2021-08-30 17:48:36,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094069754] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:48:36,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:48:36,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-08-30 17:48:36,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999027814] [2021-08-30 17:48:36,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-30 17:48:36,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:48:36,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-30 17:48:36,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-08-30 17:48:36,170 INFO L87 Difference]: Start difference. First operand 117 states and 129 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-30 17:48:36,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:48:36,951 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2021-08-30 17:48:36,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 17:48:36,952 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 50 [2021-08-30 17:48:36,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:48:36,952 INFO L225 Difference]: With dead ends: 117 [2021-08-30 17:48:36,952 INFO L226 Difference]: Without dead ends: 117 [2021-08-30 17:48:36,953 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 321.46ms TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-08-30 17:48:36,953 INFO L928 BasicCegarLoop]: 13 mSDtfsCounter, 51 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 620.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.58ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 752.49ms IncrementalHoareTripleChecker+Time [2021-08-30 17:48:36,953 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 133 Invalid, 1089 Unknown, 0 Unchecked, 3.58ms Time], IncrementalHoareTripleChecker [20 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 752.49ms Time] [2021-08-30 17:48:36,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-30 17:48:36,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-30 17:48:36,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 85 states have (on average 1.3294117647058823) internal successors, (113), 104 states have internal predecessors, (113), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-30 17:48:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2021-08-30 17:48:36,956 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 50 [2021-08-30 17:48:36,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:48:36,957 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2021-08-30 17:48:36,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-30 17:48:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2021-08-30 17:48:36,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-30 17:48:36,958 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:48:36,958 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:48:36,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-30 17:48:37,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:48:37,169 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alloc_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-30 17:48:37,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:48:37,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1535917294, now seen corresponding path program 2 times [2021-08-30 17:48:37,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:48:37,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000799138] [2021-08-30 17:48:37,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 17:48:37,169 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:48:37,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:48:37,170 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:48:37,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-30 17:48:37,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 17:48:37,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:48:37,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 17:48:37,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:48:37,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:48:37,463 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-30 17:48:37,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-08-30 17:48:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 17:48:37,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:48:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 17:48:37,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:48:37,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000799138] [2021-08-30 17:48:37,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000799138] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:48:37,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:48:37,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-08-30 17:48:37,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453186633] [2021-08-30 17:48:37,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 17:48:37,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:48:37,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 17:48:37,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:48:37,674 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:48:38,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:48:38,098 INFO L93 Difference]: Finished difference Result 155 states and 173 transitions. [2021-08-30 17:48:38,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:48:38,098 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2021-08-30 17:48:38,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:48:38,099 INFO L225 Difference]: With dead ends: 155 [2021-08-30 17:48:38,099 INFO L226 Difference]: Without dead ends: 155 [2021-08-30 17:48:38,099 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 96 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 131.40ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-08-30 17:48:38,100 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 106 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 328.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.59ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 382.32ms IncrementalHoareTripleChecker+Time [2021-08-30 17:48:38,100 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 44 Invalid, 706 Unknown, 0 Unchecked, 2.59ms Time], IncrementalHoareTripleChecker [13 Valid, 593 Invalid, 0 Unknown, 100 Unchecked, 382.32ms Time] [2021-08-30 17:48:38,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-08-30 17:48:38,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 135. [2021-08-30 17:48:38,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 101 states have (on average 1.3267326732673268) internal successors, (134), 119 states have internal predecessors, (134), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2021-08-30 17:48:38,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 156 transitions. [2021-08-30 17:48:38,103 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 156 transitions. Word has length 56 [2021-08-30 17:48:38,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:48:38,104 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 156 transitions. [2021-08-30 17:48:38,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:48:38,104 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 156 transitions. [2021-08-30 17:48:38,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-30 17:48:38,105 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:48:38,105 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:48:38,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-08-30 17:48:38,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:48:38,319 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting alloc_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-30 17:48:38,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:48:38,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1535917293, now seen corresponding path program 1 times [2021-08-30 17:48:38,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:48:38,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346557584] [2021-08-30 17:48:38,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:48:38,320 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:48:38,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:48:38,321 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:48:38,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-30 17:48:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:48:38,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-30 17:48:38,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:48:38,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:48:38,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:48:40,955 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:48:40,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-08-30 17:48:40,963 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 17:48:40,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2021-08-30 17:48:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 17:48:41,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:49:02,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2021-08-30 17:49:02,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2021-08-30 17:49:02,909 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 17:49:02,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:49:02,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346557584] [2021-08-30 17:49:02,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346557584] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:49:02,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:49:02,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-08-30 17:49:02,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471041158] [2021-08-30 17:49:02,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-30 17:49:02,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:49:02,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-30 17:49:02,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=400, Unknown=9, NotChecked=0, Total=462 [2021-08-30 17:49:02,910 INFO L87 Difference]: Start difference. First operand 135 states and 156 transitions. Second operand has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 17:49:05,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:49:05,802 INFO L93 Difference]: Finished difference Result 166 states and 194 transitions. [2021-08-30 17:49:05,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-30 17:49:05,802 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 56 [2021-08-30 17:49:05,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:49:05,803 INFO L225 Difference]: With dead ends: 166 [2021-08-30 17:49:05,803 INFO L226 Difference]: Without dead ends: 166 [2021-08-30 17:49:05,803 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 22055.17ms TimeCoverageRelationStatistics Valid=94, Invalid=653, Unknown=9, NotChecked=0, Total=756 [2021-08-30 17:49:05,804 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 85 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 497.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.73ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 688 IncrementalHoareTripleChecker+Unchecked, 574.77ms IncrementalHoareTripleChecker+Time [2021-08-30 17:49:05,804 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 105 Invalid, 1040 Unknown, 0 Unchecked, 3.73ms Time], IncrementalHoareTripleChecker [15 Valid, 337 Invalid, 0 Unknown, 688 Unchecked, 574.77ms Time] [2021-08-30 17:49:05,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-08-30 17:49:05,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2021-08-30 17:49:05,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 109 states have (on average 1.3302752293577982) internal successors, (145), 128 states have internal predecessors, (145), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2021-08-30 17:49:05,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2021-08-30 17:49:05,808 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 56 [2021-08-30 17:49:05,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:49:05,808 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2021-08-30 17:49:05,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 17:49:05,808 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2021-08-30 17:49:05,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-30 17:49:05,809 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:49:05,809 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:49:05,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-30 17:49:06,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:49:06,019 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting alloc_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-30 17:49:06,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:49:06,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1507288142, now seen corresponding path program 1 times [2021-08-30 17:49:06,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:49:06,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890468997] [2021-08-30 17:49:06,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:49:06,020 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:49:06,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:49:06,021 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:49:06,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-30 17:49:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:49:06,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 17:49:06,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:49:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-30 17:49:06,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:49:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-30 17:49:06,342 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:49:06,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890468997] [2021-08-30 17:49:06,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890468997] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:49:06,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:49:06,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 17:49:06,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703795622] [2021-08-30 17:49:06,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:49:06,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:49:06,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:49:06,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:49:06,343 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:49:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:49:06,550 INFO L93 Difference]: Finished difference Result 145 states and 167 transitions. [2021-08-30 17:49:06,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:49:06,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 56 [2021-08-30 17:49:06,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:49:06,552 INFO L225 Difference]: With dead ends: 145 [2021-08-30 17:49:06,552 INFO L226 Difference]: Without dead ends: 145 [2021-08-30 17:49:06,552 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.21ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:49:06,552 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 175.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.03ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 201.73ms IncrementalHoareTripleChecker+Time [2021-08-30 17:49:06,552 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 55 Invalid, 248 Unknown, 0 Unchecked, 1.03ms Time], IncrementalHoareTripleChecker [1 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 201.73ms Time] [2021-08-30 17:49:06,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-08-30 17:49:06,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2021-08-30 17:49:06,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 107 states have (on average 1.308411214953271) internal successors, (140), 124 states have internal predecessors, (140), 10 states have call successors, (10), 7 states have call predecessors, (10), 9 states have return successors, (15), 11 states have call predecessors, (15), 9 states have call successors, (15) [2021-08-30 17:49:06,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 165 transitions. [2021-08-30 17:49:06,556 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 165 transitions. Word has length 56 [2021-08-30 17:49:06,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:49:06,557 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 165 transitions. [2021-08-30 17:49:06,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:49:06,557 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 165 transitions. [2021-08-30 17:49:06,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-30 17:49:06,557 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:49:06,557 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:49:06,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-08-30 17:49:06,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:49:06,761 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting alloc_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-30 17:49:06,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:49:06,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1452186463, now seen corresponding path program 1 times [2021-08-30 17:49:06,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:49:06,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434402525] [2021-08-30 17:49:06,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:49:06,762 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:49:06,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:49:06,763 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:49:06,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-08-30 17:49:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:49:06,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:49:06,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:49:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-30 17:49:06,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:49:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-30 17:49:07,040 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:49:07,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434402525] [2021-08-30 17:49:07,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434402525] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:49:07,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:49:07,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 17:49:07,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834114378] [2021-08-30 17:49:07,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:49:07,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:49:07,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:49:07,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:49:07,041 INFO L87 Difference]: Start difference. First operand 143 states and 165 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:49:07,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:49:07,251 INFO L93 Difference]: Finished difference Result 145 states and 165 transitions. [2021-08-30 17:49:07,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:49:07,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 58 [2021-08-30 17:49:07,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:49:07,253 INFO L225 Difference]: With dead ends: 145 [2021-08-30 17:49:07,253 INFO L226 Difference]: Without dead ends: 145 [2021-08-30 17:49:07,253 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.62ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:49:07,253 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 170.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 198.48ms IncrementalHoareTripleChecker+Time [2021-08-30 17:49:07,253 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 59 Invalid, 256 Unknown, 0 Unchecked, 1.11ms Time], IncrementalHoareTripleChecker [0 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 198.48ms Time] [2021-08-30 17:49:07,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-08-30 17:49:07,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2021-08-30 17:49:07,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 107 states have (on average 1.2897196261682242) internal successors, (138), 124 states have internal predecessors, (138), 10 states have call successors, (10), 7 states have call predecessors, (10), 9 states have return successors, (15), 11 states have call predecessors, (15), 9 states have call successors, (15) [2021-08-30 17:49:07,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 163 transitions. [2021-08-30 17:49:07,257 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 163 transitions. Word has length 58 [2021-08-30 17:49:07,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:49:07,257 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 163 transitions. [2021-08-30 17:49:07,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:49:07,257 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 163 transitions. [2021-08-30 17:49:07,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-30 17:49:07,257 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:49:07,257 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:49:07,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-08-30 17:49:07,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:49:07,458 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting alloc_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-30 17:49:07,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:49:07,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1099970498, now seen corresponding path program 1 times [2021-08-30 17:49:07,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:49:07,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959892083] [2021-08-30 17:49:07,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:49:07,459 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:49:07,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:49:07,459 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:49:07,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-08-30 17:49:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:49:07,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 17:49:07,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:49:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-08-30 17:49:07,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:49:07,741 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-08-30 17:49:07,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:49:07,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959892083] [2021-08-30 17:49:07,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959892083] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:49:07,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:49:07,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-08-30 17:49:07,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151130187] [2021-08-30 17:49:07,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:49:07,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:49:07,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:49:07,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:49:07,742 INFO L87 Difference]: Start difference. First operand 143 states and 163 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-30 17:49:07,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:49:07,934 INFO L93 Difference]: Finished difference Result 145 states and 164 transitions. [2021-08-30 17:49:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:49:07,934 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 58 [2021-08-30 17:49:07,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:49:07,935 INFO L225 Difference]: With dead ends: 145 [2021-08-30 17:49:07,935 INFO L226 Difference]: Without dead ends: 145 [2021-08-30 17:49:07,935 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.24ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:49:07,936 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 20 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 156.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.83ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 181.74ms IncrementalHoareTripleChecker+Time [2021-08-30 17:49:07,936 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 44 Invalid, 195 Unknown, 0 Unchecked, 0.83ms Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 181.74ms Time] [2021-08-30 17:49:07,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-08-30 17:49:07,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2021-08-30 17:49:07,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 107 states have (on average 1.280373831775701) internal successors, (137), 124 states have internal predecessors, (137), 10 states have call successors, (10), 7 states have call predecessors, (10), 9 states have return successors, (15), 11 states have call predecessors, (15), 9 states have call successors, (15) [2021-08-30 17:49:07,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 162 transitions. [2021-08-30 17:49:07,941 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 162 transitions. Word has length 58 [2021-08-30 17:49:07,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:49:07,941 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 162 transitions. [2021-08-30 17:49:07,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-30 17:49:07,941 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 162 transitions. [2021-08-30 17:49:07,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-30 17:49:07,942 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:49:07,942 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:49:07,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-08-30 17:49:08,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:49:08,159 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-30 17:49:08,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:49:08,159 INFO L82 PathProgramCache]: Analyzing trace with hash 612578384, now seen corresponding path program 3 times [2021-08-30 17:49:08,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:49:08,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553994613] [2021-08-30 17:49:08,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-30 17:49:08,159 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:49:08,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:49:08,160 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:49:08,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-08-30 17:49:08,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-08-30 17:49:08,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:49:08,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-30 17:49:08,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:49:08,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:49:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 41 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:49:09,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:49:18,113 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:49:18,113 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:49:18,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553994613] [2021-08-30 17:49:18,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553994613] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:49:18,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:49:18,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 43 [2021-08-30 17:49:18,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453968260] [2021-08-30 17:49:18,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-08-30 17:49:18,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:49:18,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-08-30 17:49:18,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=1404, Unknown=0, NotChecked=0, Total=1806 [2021-08-30 17:49:18,115 INFO L87 Difference]: Start difference. First operand 143 states and 162 transitions. Second operand has 43 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:49:28,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:49:28,858 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2021-08-30 17:49:28,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-30 17:49:28,859 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2021-08-30 17:49:28,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:49:28,859 INFO L225 Difference]: With dead ends: 129 [2021-08-30 17:49:28,859 INFO L226 Difference]: Without dead ends: 129 [2021-08-30 17:49:28,860 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 9415.37ms TimeCoverageRelationStatistics Valid=444, Invalid=1536, Unknown=0, NotChecked=0, Total=1980 [2021-08-30 17:49:28,860 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 228 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7002.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.31ms SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 7670.81ms IncrementalHoareTripleChecker+Time [2021-08-30 17:49:28,860 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 160 Invalid, 2068 Unknown, 0 Unchecked, 16.31ms Time], IncrementalHoareTripleChecker [96 Valid, 1783 Invalid, 0 Unknown, 189 Unchecked, 7670.81ms Time] [2021-08-30 17:49:28,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-08-30 17:49:28,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-08-30 17:49:28,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 94 states have (on average 1.2553191489361701) internal successors, (118), 110 states have internal predecessors, (118), 10 states have call successors, (10), 7 states have call predecessors, (10), 9 states have return successors, (15), 11 states have call predecessors, (15), 9 states have call successors, (15) [2021-08-30 17:49:28,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 143 transitions. [2021-08-30 17:49:28,864 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 143 transitions. Word has length 58 [2021-08-30 17:49:28,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:49:28,864 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 143 transitions. [2021-08-30 17:49:28,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:49:28,864 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 143 transitions. [2021-08-30 17:49:28,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-08-30 17:49:28,865 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:49:28,865 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:49:28,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-08-30 17:49:29,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:49:29,071 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting free_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 86 more)] === [2021-08-30 17:49:29,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:49:29,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1452868472, now seen corresponding path program 1 times [2021-08-30 17:49:29,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:49:29,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082954726] [2021-08-30 17:49:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:49:29,072 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:49:29,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:49:29,073 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:49:29,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-08-30 17:49:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:49:29,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-30 17:49:29,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:49:29,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:49:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 17:49:29,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:49:29,469 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:49:29,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082954726] [2021-08-30 17:49:29,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:49:29,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1791574403] [2021-08-30 17:49:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:49:29,470 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-30 17:49:29,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-30 17:49:29,471 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-30 17:49:29,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-08-30 17:49:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:49:29,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-30 17:49:29,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:49:29,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:49:29,791 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 17:49:29,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:49:29,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:49:29,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231865589] [2021-08-30 17:49:29,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:49:29,921 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:49:29,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:49:29,922 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:49:29,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-30 17:49:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:49:30,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-30 17:49:30,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:49:30,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:49:30,180 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 17:49:30,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:49:30,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:49:30,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:49:30,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-30 17:49:30,318 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-30 17:49:30,318 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-08-30 17:49:30,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err0REQUIRES_VIOLATION (89 of 90 remaining) [2021-08-30 17:49:30,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION (88 of 90 remaining) [2021-08-30 17:49:30,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION (87 of 90 remaining) [2021-08-30 17:49:30,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION (86 of 90 remaining) [2021-08-30 17:49:30,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION (85 of 90 remaining) [2021-08-30 17:49:30,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION (84 of 90 remaining) [2021-08-30 17:49:30,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION (83 of 90 remaining) [2021-08-30 17:49:30,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION (82 of 90 remaining) [2021-08-30 17:49:30,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION (81 of 90 remaining) [2021-08-30 17:49:30,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (80 of 90 remaining) [2021-08-30 17:49:30,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION (79 of 90 remaining) [2021-08-30 17:49:30,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION (78 of 90 remaining) [2021-08-30 17:49:30,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION (77 of 90 remaining) [2021-08-30 17:49:30,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION (76 of 90 remaining) [2021-08-30 17:49:30,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION (75 of 90 remaining) [2021-08-30 17:49:30,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION (74 of 90 remaining) [2021-08-30 17:49:30,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION (73 of 90 remaining) [2021-08-30 17:49:30,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION (72 of 90 remaining) [2021-08-30 17:49:30,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION (71 of 90 remaining) [2021-08-30 17:49:30,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION (70 of 90 remaining) [2021-08-30 17:49:30,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION (69 of 90 remaining) [2021-08-30 17:49:30,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION (68 of 90 remaining) [2021-08-30 17:49:30,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION (67 of 90 remaining) [2021-08-30 17:49:30,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION (66 of 90 remaining) [2021-08-30 17:49:30,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION (65 of 90 remaining) [2021-08-30 17:49:30,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION (64 of 90 remaining) [2021-08-30 17:49:30,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION (63 of 90 remaining) [2021-08-30 17:49:30,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION (62 of 90 remaining) [2021-08-30 17:49:30,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION (61 of 90 remaining) [2021-08-30 17:49:30,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION (60 of 90 remaining) [2021-08-30 17:49:30,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION (59 of 90 remaining) [2021-08-30 17:49:30,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION (58 of 90 remaining) [2021-08-30 17:49:30,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION (57 of 90 remaining) [2021-08-30 17:49:30,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION (56 of 90 remaining) [2021-08-30 17:49:30,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION (55 of 90 remaining) [2021-08-30 17:49:30,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION (54 of 90 remaining) [2021-08-30 17:49:30,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION (53 of 90 remaining) [2021-08-30 17:49:30,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION (52 of 90 remaining) [2021-08-30 17:49:30,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION (51 of 90 remaining) [2021-08-30 17:49:30,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err0REQUIRES_VIOLATION (50 of 90 remaining) [2021-08-30 17:49:30,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err1REQUIRES_VIOLATION (49 of 90 remaining) [2021-08-30 17:49:30,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err2REQUIRES_VIOLATION (48 of 90 remaining) [2021-08-30 17:49:30,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err3REQUIRES_VIOLATION (47 of 90 remaining) [2021-08-30 17:49:30,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE (46 of 90 remaining) [2021-08-30 17:49:30,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE (45 of 90 remaining) [2021-08-30 17:49:30,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE (44 of 90 remaining) [2021-08-30 17:49:30,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err7REQUIRES_VIOLATION (43 of 90 remaining) [2021-08-30 17:49:30,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err8REQUIRES_VIOLATION (42 of 90 remaining) [2021-08-30 17:49:30,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION (41 of 90 remaining) [2021-08-30 17:49:30,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION (40 of 90 remaining) [2021-08-30 17:49:30,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION (39 of 90 remaining) [2021-08-30 17:49:30,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION (38 of 90 remaining) [2021-08-30 17:49:30,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (37 of 90 remaining) [2021-08-30 17:49:30,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE (36 of 90 remaining) [2021-08-30 17:49:30,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE (35 of 90 remaining) [2021-08-30 17:49:30,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE (34 of 90 remaining) [2021-08-30 17:49:30,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE (33 of 90 remaining) [2021-08-30 17:49:30,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE (32 of 90 remaining) [2021-08-30 17:49:30,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (31 of 90 remaining) [2021-08-30 17:49:30,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION (30 of 90 remaining) [2021-08-30 17:49:30,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION (29 of 90 remaining) [2021-08-30 17:49:30,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION (28 of 90 remaining) [2021-08-30 17:49:30,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION (27 of 90 remaining) [2021-08-30 17:49:30,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION (26 of 90 remaining) [2021-08-30 17:49:30,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION (25 of 90 remaining) [2021-08-30 17:49:30,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION (24 of 90 remaining) [2021-08-30 17:49:30,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION (23 of 90 remaining) [2021-08-30 17:49:30,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE (22 of 90 remaining) [2021-08-30 17:49:30,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE (21 of 90 remaining) [2021-08-30 17:49:30,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE (20 of 90 remaining) [2021-08-30 17:49:30,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE (19 of 90 remaining) [2021-08-30 17:49:30,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE (18 of 90 remaining) [2021-08-30 17:49:30,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE (17 of 90 remaining) [2021-08-30 17:49:30,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION (16 of 90 remaining) [2021-08-30 17:49:30,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION (15 of 90 remaining) [2021-08-30 17:49:30,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION (14 of 90 remaining) [2021-08-30 17:49:30,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION (13 of 90 remaining) [2021-08-30 17:49:30,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION (12 of 90 remaining) [2021-08-30 17:49:30,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION (11 of 90 remaining) [2021-08-30 17:49:30,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION (10 of 90 remaining) [2021-08-30 17:49:30,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION (9 of 90 remaining) [2021-08-30 17:49:30,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err1REQUIRES_VIOLATION (8 of 90 remaining) [2021-08-30 17:49:30,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err2ASSERT_VIOLATIONMEMORY_FREE (7 of 90 remaining) [2021-08-30 17:49:30,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err3ASSERT_VIOLATIONMEMORY_FREE (6 of 90 remaining) [2021-08-30 17:49:30,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err4ASSERT_VIOLATIONMEMORY_FREE (5 of 90 remaining) [2021-08-30 17:49:30,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION (4 of 90 remaining) [2021-08-30 17:49:30,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION (3 of 90 remaining) [2021-08-30 17:49:30,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE (2 of 90 remaining) [2021-08-30 17:49:30,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE (1 of 90 remaining) [2021-08-30 17:49:30,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE (0 of 90 remaining) [2021-08-30 17:49:30,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-08-30 17:49:30,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-08-30 17:49:30,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-08-30 17:49:30,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:49:30,949 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:49:30,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:49:30 BoogieIcfgContainer [2021-08-30 17:49:30,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:49:30,957 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:49:30,958 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:49:30,958 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:49:30,958 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:48:18" (3/4) ... [2021-08-30 17:49:30,960 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:49:30,960 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:49:30,960 INFO L158 Benchmark]: Toolchain (without parser) took 73436.27ms. Allocated memory was 54.5MB in the beginning and 98.6MB in the end (delta: 44.0MB). Free memory was 30.5MB in the beginning and 57.9MB in the end (delta: -27.4MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2021-08-30 17:49:30,960 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 54.5MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:49:30,960 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.10ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.2MB in the beginning and 45.3MB in the end (delta: -15.1MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-08-30 17:49:30,961 INFO L158 Benchmark]: Boogie Preprocessor took 67.84ms. Allocated memory is still 67.1MB. Free memory was 45.3MB in the beginning and 40.2MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-30 17:49:30,961 INFO L158 Benchmark]: RCFGBuilder took 561.35ms. Allocated memory is still 67.1MB. Free memory was 40.2MB in the beginning and 32.2MB in the end (delta: 8.0MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-08-30 17:49:30,961 INFO L158 Benchmark]: TraceAbstraction took 72353.98ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 31.7MB in the beginning and 57.9MB in the end (delta: -26.2MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. [2021-08-30 17:49:30,961 INFO L158 Benchmark]: Witness Printer took 2.21ms. Allocated memory is still 98.6MB. Free memory is still 57.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:49:30,962 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 54.5MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 447.10ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.2MB in the beginning and 45.3MB in the end (delta: -15.1MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.84ms. Allocated memory is still 67.1MB. Free memory was 45.3MB in the beginning and 40.2MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 561.35ms. Allocated memory is still 67.1MB. Free memory was 40.2MB in the beginning and 32.2MB in the end (delta: 8.0MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * TraceAbstraction took 72353.98ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 31.7MB in the beginning and 57.9MB in the end (delta: -26.2MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. * Witness Printer took 2.21ms. Allocated memory is still 98.6MB. Free memory is still 57.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 780]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L797] CALL entry_point() [L784] int i; [L785] int len = 10; [L786] CALL, EXPR ldv_malloc(sizeof(struct A17*)*len) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L786] RET, EXPR ldv_malloc(sizeof(struct A17*)*len) [L786] struct A17 **array = (struct A17 **)ldv_malloc(sizeof(struct A17*)*len); [L787] COND TRUE \read(**array) [L788] i=0 [L788] COND TRUE i=0) [L775] return - -3; [L791] RET alloc_17(array, len) [L792] CALL free_17(array, len) [L778] int i; [L779] i=0 [L779] COND TRUE i