./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.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 bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 18:12:28,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 18:12:28,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 18:12:28,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 18:12:28,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 18:12:28,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 18:12:28,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 18:12:28,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 18:12:28,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 18:12:28,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 18:12:28,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 18:12:28,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 18:12:28,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 18:12:28,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 18:12:28,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 18:12:28,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 18:12:28,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 18:12:28,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 18:12:28,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 18:12:28,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 18:12:28,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 18:12:28,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 18:12:28,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 18:12:28,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 18:12:28,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 18:12:28,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 18:12:28,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 18:12:28,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 18:12:28,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 18:12:28,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 18:12:28,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 18:12:28,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 18:12:28,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 18:12:28,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 18:12:28,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 18:12:28,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 18:12:28,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 18:12:28,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 18:12:28,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 18:12:28,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 18:12:28,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 18:12:28,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-21 18:12:28,877 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 18:12:28,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 18:12:28,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 18:12:28,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 18:12:28,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 18:12:28,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 18:12:28,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 18:12:28,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 18:12:28,882 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 18:12:28,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 18:12:28,884 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 18:12:28,884 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 18:12:28,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 18:12:28,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 18:12:28,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 18:12:28,885 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-21 18:12:28,885 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-21 18:12:28,885 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-21 18:12:28,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 18:12:28,885 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 18:12:28,886 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 18:12:28,886 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 18:12:28,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 18:12:28,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 18:12:28,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 18:12:28,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:12:28,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 18:12:28,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 18:12:28,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 18:12:28,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 18:12:28,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 18:12:28,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 [2021-12-21 18:12:29,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 18:12:29,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 18:12:29,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 18:12:29,158 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 18:12:29,160 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 18:12:29,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-12-21 18:12:29,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7bc61ac0/9f817d2704af404db445e3581e1afe3f/FLAG978b4c97d [2021-12-21 18:12:29,686 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 18:12:29,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-12-21 18:12:29,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7bc61ac0/9f817d2704af404db445e3581e1afe3f/FLAG978b4c97d [2021-12-21 18:12:29,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7bc61ac0/9f817d2704af404db445e3581e1afe3f [2021-12-21 18:12:29,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 18:12:30,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 18:12:30,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 18:12:30,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 18:12:30,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 18:12:30,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:12:29" (1/1) ... [2021-12-21 18:12:30,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e7e0f8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:12:30, skipping insertion in model container [2021-12-21 18:12:30,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:12:29" (1/1) ... [2021-12-21 18:12:30,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 18:12:30,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 18:12:30,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:12:30,481 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-21 18:12:30,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6b852a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:12:30, skipping insertion in model container [2021-12-21 18:12:30,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 18:12:30,483 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-21 18:12:30,486 INFO L158 Benchmark]: Toolchain (without parser) took 483.12ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 60.4MB in the beginning and 84.2MB in the end (delta: -23.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 18:12:30,487 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory is still 49.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 18:12:30,488 INFO L158 Benchmark]: CACSL2BoogieTranslator took 480.99ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 60.4MB in the beginning and 84.2MB in the end (delta: -23.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 18:12:30,490 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory is still 49.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 480.99ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 60.4MB in the beginning and 84.2MB in the end (delta: -23.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.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 bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 18:12:32,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 18:12:32,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 18:12:32,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 18:12:32,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 18:12:32,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 18:12:32,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 18:12:32,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 18:12:32,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 18:12:32,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 18:12:32,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 18:12:32,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 18:12:32,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 18:12:32,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 18:12:32,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 18:12:32,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 18:12:32,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 18:12:32,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 18:12:32,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 18:12:32,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 18:12:32,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 18:12:32,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 18:12:32,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 18:12:32,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 18:12:32,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 18:12:32,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 18:12:32,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 18:12:32,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 18:12:32,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 18:12:32,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 18:12:32,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 18:12:32,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 18:12:32,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 18:12:32,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 18:12:32,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 18:12:32,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 18:12:32,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 18:12:32,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 18:12:32,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 18:12:32,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 18:12:32,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 18:12:32,469 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-21 18:12:32,497 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 18:12:32,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 18:12:32,498 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 18:12:32,498 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 18:12:32,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 18:12:32,499 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 18:12:32,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 18:12:32,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 18:12:32,500 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 18:12:32,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 18:12:32,500 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 18:12:32,500 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 18:12:32,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 18:12:32,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 18:12:32,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 18:12:32,501 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-21 18:12:32,501 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-21 18:12:32,501 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-21 18:12:32,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 18:12:32,502 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 18:12:32,502 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 18:12:32,502 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 18:12:32,502 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 18:12:32,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 18:12:32,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 18:12:32,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 18:12:32,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 18:12:32,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:12:32,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 18:12:32,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 18:12:32,504 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 18:12:32,504 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 18:12:32,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 18:12:32,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 18:12:32,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 [2021-12-21 18:12:32,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 18:12:32,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 18:12:32,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 18:12:32,864 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 18:12:32,865 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 18:12:32,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-12-21 18:12:32,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13d1e3ad5/8374a5bd04f6479eac2f77e1d555a0fe/FLAG7d8a34ea7 [2021-12-21 18:12:33,459 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 18:12:33,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-12-21 18:12:33,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13d1e3ad5/8374a5bd04f6479eac2f77e1d555a0fe/FLAG7d8a34ea7 [2021-12-21 18:12:33,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13d1e3ad5/8374a5bd04f6479eac2f77e1d555a0fe [2021-12-21 18:12:33,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 18:12:33,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 18:12:33,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 18:12:33,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 18:12:33,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 18:12:33,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:12:33" (1/1) ... [2021-12-21 18:12:33,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29a15551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:12:33, skipping insertion in model container [2021-12-21 18:12:33,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:12:33" (1/1) ... [2021-12-21 18:12:33,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 18:12:33,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 18:12:34,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:12:34,212 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-21 18:12:34,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 18:12:34,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:12:34,297 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 18:12:34,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:12:34,403 INFO L208 MainTranslator]: Completed translation [2021-12-21 18:12:34,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:12:34 WrapperNode [2021-12-21 18:12:34,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 18:12:34,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 18:12:34,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 18:12:34,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 18:12:34,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:12:34" (1/1) ... [2021-12-21 18:12:34,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:12:34" (1/1) ... [2021-12-21 18:12:34,455 INFO L137 Inliner]: procedures = 170, calls = 78, calls flagged for inlining = 25, calls inlined = 7, statements flattened = 60 [2021-12-21 18:12:34,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 18:12:34,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 18:12:34,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 18:12:34,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 18:12:34,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:12:34" (1/1) ... [2021-12-21 18:12:34,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:12:34" (1/1) ... [2021-12-21 18:12:34,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:12:34" (1/1) ... [2021-12-21 18:12:34,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:12:34" (1/1) ... [2021-12-21 18:12:34,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:12:34" (1/1) ... [2021-12-21 18:12:34,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:12:34" (1/1) ... [2021-12-21 18:12:34,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:12:34" (1/1) ... [2021-12-21 18:12:34,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 18:12:34,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 18:12:34,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 18:12:34,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 18:12:34,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:12:34" (1/1) ... [2021-12-21 18:12:34,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:12:34,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:12:34,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 18:12:34,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 18:12:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 18:12:34,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 18:12:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 18:12:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 18:12:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 18:12:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 18:12:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 18:12:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 18:12:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 18:12:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 18:12:34,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 18:12:34,716 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 18:12:34,718 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 18:12:34,938 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 18:12:34,943 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 18:12:34,944 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 18:12:34,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:12:34 BoogieIcfgContainer [2021-12-21 18:12:34,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 18:12:34,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 18:12:34,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 18:12:34,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 18:12:34,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:12:33" (1/3) ... [2021-12-21 18:12:34,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db8341c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:12:34, skipping insertion in model container [2021-12-21 18:12:34,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:12:34" (2/3) ... [2021-12-21 18:12:34,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db8341c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:12:34, skipping insertion in model container [2021-12-21 18:12:34,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:12:34" (3/3) ... [2021-12-21 18:12:34,960 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test7-2.i [2021-12-21 18:12:34,965 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 18:12:34,967 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-12-21 18:12:35,022 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 18:12:35,031 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 18:12:35,032 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-12-21 18:12:35,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 38 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:35,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-21 18:12:35,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:35,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:35,067 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:35,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:35,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1741342760, now seen corresponding path program 1 times [2021-12-21 18:12:35,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:35,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212511688] [2021-12-21 18:12:35,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:35,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:35,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:35,087 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:12:35,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 18:12:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:35,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 18:12:35,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:35,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:35,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:35,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:35,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212511688] [2021-12-21 18:12:35,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212511688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:35,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:35,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 18:12:35,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382903889] [2021-12-21 18:12:35,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:35,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:12:35,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:35,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:12:35,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:12:35,358 INFO L87 Difference]: Start difference. First operand has 41 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 38 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:35,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:35,447 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2021-12-21 18:12:35,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:12:35,450 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, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-21 18:12:35,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:35,457 INFO L225 Difference]: With dead ends: 76 [2021-12-21 18:12:35,457 INFO L226 Difference]: Without dead ends: 72 [2021-12-21 18:12:35,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:12:35,467 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 35 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:35,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 201 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:12:35,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-21 18:12:35,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 43. [2021-12-21 18:12:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 39 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 18:12:35,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-12-21 18:12:35,517 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 12 [2021-12-21 18:12:35,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:35,517 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-12-21 18:12:35,518 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, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:35,518 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-12-21 18:12:35,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-21 18:12:35,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:35,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:35,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-21 18:12:35,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:35,730 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:35,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:35,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1741377529, now seen corresponding path program 1 times [2021-12-21 18:12:35,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:35,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744734637] [2021-12-21 18:12:35,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:35,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:35,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:35,738 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:12:35,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-21 18:12:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:35,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 18:12:35,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:35,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:35,848 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:35,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744734637] [2021-12-21 18:12:35,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744734637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:35,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:35,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:12:35,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337602325] [2021-12-21 18:12:35,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:35,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:12:35,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:35,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:12:35,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:12:35,854 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. 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, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:35,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:35,887 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-12-21 18:12:35,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:12:35,888 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, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-21 18:12:35,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:35,888 INFO L225 Difference]: With dead ends: 42 [2021-12-21 18:12:35,889 INFO L226 Difference]: Without dead ends: 42 [2021-12-21 18:12:35,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:12:35,890 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 30 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:35,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 113 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:12:35,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-21 18:12:35,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-12-21 18:12:35,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 38 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 18:12:35,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-12-21 18:12:35,897 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 12 [2021-12-21 18:12:35,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:35,898 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-12-21 18:12:35,898 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, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:35,898 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-12-21 18:12:35,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-21 18:12:35,899 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:35,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:35,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-21 18:12:36,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:36,100 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:36,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:36,100 INFO L85 PathProgramCache]: Analyzing trace with hash -810814201, now seen corresponding path program 1 times [2021-12-21 18:12:36,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:36,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833853429] [2021-12-21 18:12:36,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:36,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:36,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:36,106 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:12:36,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-21 18:12:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:36,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 18:12:36,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:36,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:36,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:36,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833853429] [2021-12-21 18:12:36,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833853429] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:36,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:36,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 18:12:36,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357625191] [2021-12-21 18:12:36,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:36,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:12:36,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:36,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:12:36,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:12:36,202 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:36,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:36,248 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-12-21 18:12:36,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:12:36,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-21 18:12:36,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:36,249 INFO L225 Difference]: With dead ends: 48 [2021-12-21 18:12:36,249 INFO L226 Difference]: Without dead ends: 48 [2021-12-21 18:12:36,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 18:12:36,251 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 16 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:36,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 143 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:12:36,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-21 18:12:36,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2021-12-21 18:12:36,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 40 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 18:12:36,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-12-21 18:12:36,256 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 12 [2021-12-21 18:12:36,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:36,256 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-12-21 18:12:36,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:36,256 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-12-21 18:12:36,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-21 18:12:36,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:36,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:36,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-21 18:12:36,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:36,464 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:36,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:36,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1851871381, now seen corresponding path program 1 times [2021-12-21 18:12:36,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:36,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804092777] [2021-12-21 18:12:36,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:36,465 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:36,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:36,466 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:12:36,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-21 18:12:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:36,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 18:12:36,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:36,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:36,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:36,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804092777] [2021-12-21 18:12:36,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804092777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:36,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:36,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:12:36,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170926511] [2021-12-21 18:12:36,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:36,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:12:36,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:36,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:12:36,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:12:36,689 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:36,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:36,775 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2021-12-21 18:12:36,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:12:36,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-21 18:12:36,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:36,778 INFO L225 Difference]: With dead ends: 72 [2021-12-21 18:12:36,778 INFO L226 Difference]: Without dead ends: 72 [2021-12-21 18:12:36,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:12:36,781 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 70 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:36,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 128 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:12:36,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-21 18:12:36,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 50. [2021-12-21 18:12:36,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 46 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 18:12:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2021-12-21 18:12:36,795 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 13 [2021-12-21 18:12:36,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:36,796 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2021-12-21 18:12:36,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:36,796 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2021-12-21 18:12:36,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-21 18:12:36,797 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:36,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:36,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-21 18:12:37,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:37,006 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:37,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:37,007 INFO L85 PathProgramCache]: Analyzing trace with hash 635641452, now seen corresponding path program 1 times [2021-12-21 18:12:37,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:37,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82835225] [2021-12-21 18:12:37,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:37,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:37,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:37,009 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:12:37,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-21 18:12:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:37,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 18:12:37,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:37,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:37,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:37,113 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:37,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82835225] [2021-12-21 18:12:37,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82835225] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:37,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:37,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 18:12:37,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946663661] [2021-12-21 18:12:37,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:37,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:12:37,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:37,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:12:37,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:12:37,115 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:37,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:37,140 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2021-12-21 18:12:37,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:12:37,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-21 18:12:37,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:37,141 INFO L225 Difference]: With dead ends: 47 [2021-12-21 18:12:37,141 INFO L226 Difference]: Without dead ends: 47 [2021-12-21 18:12:37,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:12:37,142 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:37,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 154 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:12:37,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-12-21 18:12:37,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2021-12-21 18:12:37,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 39 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 18:12:37,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2021-12-21 18:12:37,146 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 13 [2021-12-21 18:12:37,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:37,147 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2021-12-21 18:12:37,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:37,147 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2021-12-21 18:12:37,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-21 18:12:37,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:37,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:37,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-21 18:12:37,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:37,356 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:37,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:37,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1573437893, now seen corresponding path program 1 times [2021-12-21 18:12:37,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:37,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069489998] [2021-12-21 18:12:37,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:37,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:37,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:37,358 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:12:37,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-21 18:12:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:37,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 18:12:37,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:37,457 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 18:12:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:37,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:37,494 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:37,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069489998] [2021-12-21 18:12:37,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069489998] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:37,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:37,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:12:37,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666181334] [2021-12-21 18:12:37,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:37,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:12:37,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:37,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:12:37,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:12:37,497 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:37,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:37,566 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2021-12-21 18:12:37,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:12:37,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-21 18:12:37,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:37,568 INFO L225 Difference]: With dead ends: 54 [2021-12-21 18:12:37,568 INFO L226 Difference]: Without dead ends: 54 [2021-12-21 18:12:37,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:12:37,571 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 19 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:37,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 120 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:12:37,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-12-21 18:12:37,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2021-12-21 18:12:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 38 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 18:12:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-12-21 18:12:37,579 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 14 [2021-12-21 18:12:37,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:37,579 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-12-21 18:12:37,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:37,585 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-12-21 18:12:37,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-21 18:12:37,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:37,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:37,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-21 18:12:37,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:37,795 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:37,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1573390129, now seen corresponding path program 1 times [2021-12-21 18:12:37,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:37,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493719922] [2021-12-21 18:12:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:37,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:37,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:37,798 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) [2021-12-21 18:12:37,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-21 18:12:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:37,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-21 18:12:37,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:37,859 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 18:12:42,014 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:12:42,014 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-21 18:12:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:42,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:42,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:42,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493719922] [2021-12-21 18:12:42,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493719922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:42,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:42,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 18:12:42,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478114985] [2021-12-21 18:12:42,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:42,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:12:42,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:42,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:12:42,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=18, Unknown=2, NotChecked=0, Total=30 [2021-12-21 18:12:42,100 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:42,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:42,156 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2021-12-21 18:12:42,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:12:42,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-21 18:12:42,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:42,158 INFO L225 Difference]: With dead ends: 41 [2021-12-21 18:12:42,158 INFO L226 Difference]: Without dead ends: 41 [2021-12-21 18:12:42,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=10, Invalid=18, Unknown=2, NotChecked=0, Total=30 [2021-12-21 18:12:42,159 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 30 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:42,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 93 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2021-12-21 18:12:42,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-12-21 18:12:42,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-12-21 18:12:42,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 37 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 18:12:42,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-12-21 18:12:42,163 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 14 [2021-12-21 18:12:42,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:42,163 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-12-21 18:12:42,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:42,164 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-12-21 18:12:42,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-21 18:12:42,164 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:42,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:42,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-21 18:12:42,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:42,371 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:42,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:42,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1573390130, now seen corresponding path program 1 times [2021-12-21 18:12:42,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:42,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909006627] [2021-12-21 18:12:42,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:42,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:42,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:42,373 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) [2021-12-21 18:12:42,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-21 18:12:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:42,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 18:12:42,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:42,430 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 18:12:42,499 INFO L353 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-21 18:12:42,499 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2021-12-21 18:12:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:42,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:42,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:42,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909006627] [2021-12-21 18:12:42,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909006627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:42,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:42,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:12:42,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137031400] [2021-12-21 18:12:42,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:42,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:12:42,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:42,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:12:42,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:12:42,533 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:42,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:42,590 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-12-21 18:12:42,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:12:42,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-21 18:12:42,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:42,591 INFO L225 Difference]: With dead ends: 52 [2021-12-21 18:12:42,591 INFO L226 Difference]: Without dead ends: 52 [2021-12-21 18:12:42,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:12:42,592 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 20 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:42,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 114 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2021-12-21 18:12:42,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-21 18:12:42,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2021-12-21 18:12:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 36 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 18:12:42,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-12-21 18:12:42,595 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 14 [2021-12-21 18:12:42,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:42,596 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-12-21 18:12:42,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:42,596 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-12-21 18:12:42,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-21 18:12:42,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:42,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:42,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-21 18:12:42,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:42,804 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:42,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:42,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1802965784, now seen corresponding path program 1 times [2021-12-21 18:12:42,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:42,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930635849] [2021-12-21 18:12:42,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:42,805 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:42,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:42,807 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) [2021-12-21 18:12:42,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-21 18:12:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:42,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 18:12:42,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:43,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:43,001 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:43,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930635849] [2021-12-21 18:12:43,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930635849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:43,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:43,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:12:43,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321505853] [2021-12-21 18:12:43,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:43,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:12:43,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:43,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:12:43,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:12:43,003 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:43,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:43,030 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2021-12-21 18:12:43,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:12:43,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-21 18:12:43,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:43,031 INFO L225 Difference]: With dead ends: 43 [2021-12-21 18:12:43,031 INFO L226 Difference]: Without dead ends: 34 [2021-12-21 18:12:43,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:12:43,033 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:43,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2021-12-21 18:12:43,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-21 18:12:43,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-12-21 18:12:43,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 31 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:43,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2021-12-21 18:12:43,042 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 14 [2021-12-21 18:12:43,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:43,043 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2021-12-21 18:12:43,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:43,043 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2021-12-21 18:12:43,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-21 18:12:43,045 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:43,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:43,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-21 18:12:43,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:43,256 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:43,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:43,257 INFO L85 PathProgramCache]: Analyzing trace with hash 984869777, now seen corresponding path program 1 times [2021-12-21 18:12:43,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:43,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431267189] [2021-12-21 18:12:43,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:43,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:43,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:43,261 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) [2021-12-21 18:12:43,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-21 18:12:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:43,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 18:12:43,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:43,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:43,362 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:43,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431267189] [2021-12-21 18:12:43,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431267189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:43,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:43,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 18:12:43,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707901047] [2021-12-21 18:12:43,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:43,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:12:43,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:43,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:12:43,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:12:43,363 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:43,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:43,400 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2021-12-21 18:12:43,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:12:43,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-21 18:12:43,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:43,401 INFO L225 Difference]: With dead ends: 40 [2021-12-21 18:12:43,401 INFO L226 Difference]: Without dead ends: 40 [2021-12-21 18:12:43,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 18:12:43,402 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 15 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:43,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 122 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:12:43,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-21 18:12:43,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2021-12-21 18:12:43,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 33 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:43,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-12-21 18:12:43,404 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 17 [2021-12-21 18:12:43,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:43,405 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-12-21 18:12:43,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:43,405 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-12-21 18:12:43,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-21 18:12:43,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:43,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:43,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-21 18:12:43,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:43,614 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:43,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:43,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1624534489, now seen corresponding path program 1 times [2021-12-21 18:12:43,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:43,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831536053] [2021-12-21 18:12:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:43,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:43,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:43,616 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) [2021-12-21 18:12:43,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-21 18:12:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:43,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-21 18:12:43,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:43,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:43,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:43,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831536053] [2021-12-21 18:12:43,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831536053] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:43,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:43,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:12:43,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542162018] [2021-12-21 18:12:43,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:43,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:12:43,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:43,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:12:43,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:12:43,853 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:43,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:43,937 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2021-12-21 18:12:43,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:12:43,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-21 18:12:43,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:43,938 INFO L225 Difference]: With dead ends: 40 [2021-12-21 18:12:43,938 INFO L226 Difference]: Without dead ends: 40 [2021-12-21 18:12:43,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 18:12:43,939 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 41 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:43,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 83 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:12:43,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-21 18:12:43,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2021-12-21 18:12:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.25) internal successors, (35), 32 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:43,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-12-21 18:12:43,941 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 18 [2021-12-21 18:12:43,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:43,942 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-12-21 18:12:43,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:43,942 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-12-21 18:12:43,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-21 18:12:43,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:43,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:43,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-21 18:12:44,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:44,151 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:44,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:44,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1624534488, now seen corresponding path program 1 times [2021-12-21 18:12:44,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:44,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613700908] [2021-12-21 18:12:44,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:44,152 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:44,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:44,153 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) [2021-12-21 18:12:44,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-21 18:12:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:44,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 18:12:44,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:44,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:44,277 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:44,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613700908] [2021-12-21 18:12:44,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613700908] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:44,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:44,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:12:44,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139109433] [2021-12-21 18:12:44,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:44,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:12:44,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:44,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:12:44,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:12:44,279 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:44,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:44,336 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-12-21 18:12:44,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:12:44,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-21 18:12:44,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:44,337 INFO L225 Difference]: With dead ends: 35 [2021-12-21 18:12:44,337 INFO L226 Difference]: Without dead ends: 35 [2021-12-21 18:12:44,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 18:12:44,338 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 31 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:44,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 73 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:12:44,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-21 18:12:44,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-12-21 18:12:44,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 31 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:44,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2021-12-21 18:12:44,340 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 18 [2021-12-21 18:12:44,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:44,340 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2021-12-21 18:12:44,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:44,341 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2021-12-21 18:12:44,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 18:12:44,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:44,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:44,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-21 18:12:44,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:44,549 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:44,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:44,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1567451378, now seen corresponding path program 1 times [2021-12-21 18:12:44,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:44,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130693644] [2021-12-21 18:12:44,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:44,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:44,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:44,552 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) [2021-12-21 18:12:44,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-21 18:12:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:44,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-21 18:12:44,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:47,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:47,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:47,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130693644] [2021-12-21 18:12:47,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130693644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:47,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:47,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 18:12:47,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910947879] [2021-12-21 18:12:47,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:47,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 18:12:47,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:47,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 18:12:47,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=55, Unknown=1, NotChecked=0, Total=72 [2021-12-21 18:12:47,072 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:47,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:47,088 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-12-21 18:12:47,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 18:12:47,088 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-12-21 18:12:47,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:47,089 INFO L225 Difference]: With dead ends: 37 [2021-12-21 18:12:47,089 INFO L226 Difference]: Without dead ends: 29 [2021-12-21 18:12:47,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=16, Invalid=55, Unknown=1, NotChecked=0, Total=72 [2021-12-21 18:12:47,090 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:47,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 128 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 49 Unchecked, 0.0s Time] [2021-12-21 18:12:47,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-21 18:12:47,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-21 18:12:47,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.173913043478261) internal successors, (27), 26 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:47,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-12-21 18:12:47,092 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2021-12-21 18:12:47,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:47,092 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-12-21 18:12:47,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:47,092 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-12-21 18:12:47,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 18:12:47,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:47,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:47,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-21 18:12:47,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:47,301 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:47,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:47,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1179038406, now seen corresponding path program 1 times [2021-12-21 18:12:47,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:47,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424449461] [2021-12-21 18:12:47,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:47,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:47,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:47,303 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) [2021-12-21 18:12:47,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-21 18:12:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:47,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-21 18:12:47,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:47,505 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 18:12:47,546 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-21 18:12:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:47,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:47,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:47,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424449461] [2021-12-21 18:12:47,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424449461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:47,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:47,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 18:12:47,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380847401] [2021-12-21 18:12:47,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:47,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 18:12:47,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:47,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 18:12:47,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 18:12:47,560 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:47,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:47,677 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2021-12-21 18:12:47,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 18:12:47,677 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-12-21 18:12:47,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:47,678 INFO L225 Difference]: With dead ends: 32 [2021-12-21 18:12:47,678 INFO L226 Difference]: Without dead ends: 32 [2021-12-21 18:12:47,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-12-21 18:12:47,678 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:47,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 111 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:12:47,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-21 18:12:47,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2021-12-21 18:12:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-12-21 18:12:47,681 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 19 [2021-12-21 18:12:47,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:47,681 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-12-21 18:12:47,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:47,681 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-12-21 18:12:47,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-21 18:12:47,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:47,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:47,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-21 18:12:47,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:47,890 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:47,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:47,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2104916282, now seen corresponding path program 1 times [2021-12-21 18:12:47,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:47,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829473867] [2021-12-21 18:12:47,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:47,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:47,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:47,893 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) [2021-12-21 18:12:47,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-21 18:12:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:47,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 18:12:47,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:48,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:48,002 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:48,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829473867] [2021-12-21 18:12:48,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829473867] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:48,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:48,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:12:48,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515199148] [2021-12-21 18:12:48,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:48,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 18:12:48,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:48,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 18:12:48,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 18:12:48,004 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:48,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:48,017 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2021-12-21 18:12:48,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 18:12:48,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-12-21 18:12:48,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:48,018 INFO L225 Difference]: With dead ends: 28 [2021-12-21 18:12:48,019 INFO L226 Difference]: Without dead ends: 28 [2021-12-21 18:12:48,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:12:48,020 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:48,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 52 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:12:48,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-21 18:12:48,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-21 18:12:48,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 25 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:48,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2021-12-21 18:12:48,022 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 20 [2021-12-21 18:12:48,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:48,022 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2021-12-21 18:12:48,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:48,023 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2021-12-21 18:12:48,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-21 18:12:48,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:48,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:48,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-21 18:12:48,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:48,232 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:48,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:48,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2104515160, now seen corresponding path program 1 times [2021-12-21 18:12:48,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:48,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671242900] [2021-12-21 18:12:48,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:48,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:48,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:48,234 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) [2021-12-21 18:12:48,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-21 18:12:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:48,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-21 18:12:48,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:48,525 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 18:12:48,614 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-12-21 18:12:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:48,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:48,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:48,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671242900] [2021-12-21 18:12:48,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671242900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:48,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:48,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 18:12:48,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012244405] [2021-12-21 18:12:48,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:48,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 18:12:48,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:48,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 18:12:48,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-21 18:12:48,650 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:48,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:48,913 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2021-12-21 18:12:48,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 18:12:48,915 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-12-21 18:12:48,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:48,915 INFO L225 Difference]: With dead ends: 27 [2021-12-21 18:12:48,915 INFO L226 Difference]: Without dead ends: 27 [2021-12-21 18:12:48,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-12-21 18:12:48,916 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 41 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:48,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 64 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:12:48,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-21 18:12:48,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-21 18:12:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 24 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2021-12-21 18:12:48,918 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 20 [2021-12-21 18:12:48,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:48,918 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2021-12-21 18:12:48,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2021-12-21 18:12:48,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-21 18:12:48,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:48,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:48,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-21 18:12:49,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:49,125 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:49,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:49,125 INFO L85 PathProgramCache]: Analyzing trace with hash 815460604, now seen corresponding path program 1 times [2021-12-21 18:12:49,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:49,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982329108] [2021-12-21 18:12:49,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:49,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:49,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:49,130 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) [2021-12-21 18:12:49,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-21 18:12:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:49,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-21 18:12:49,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:49,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 18:12:49,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 18:12:49,370 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-21 18:12:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:49,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:49,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:49,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982329108] [2021-12-21 18:12:49,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982329108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:49,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:49,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 18:12:49,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444047980] [2021-12-21 18:12:49,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:49,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 18:12:49,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:49,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 18:12:49,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 18:12:49,391 INFO L87 Difference]: Start difference. First operand 27 states and 26 transitions. Second operand has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:49,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:49,554 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2021-12-21 18:12:49,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 18:12:49,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-12-21 18:12:49,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:49,555 INFO L225 Difference]: With dead ends: 26 [2021-12-21 18:12:49,555 INFO L226 Difference]: Without dead ends: 26 [2021-12-21 18:12:49,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-12-21 18:12:49,556 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:49,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 79 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:12:49,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-21 18:12:49,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-21 18:12:49,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.0) internal successors, (23), 23 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:49,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2021-12-21 18:12:49,557 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 21 [2021-12-21 18:12:49,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:49,558 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2021-12-21 18:12:49,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:49,558 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2021-12-21 18:12:49,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-21 18:12:49,558 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:12:49,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:49,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-21 18:12:49,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:49,765 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-12-21 18:12:49,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:12:49,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1750431677, now seen corresponding path program 1 times [2021-12-21 18:12:49,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:12:49,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905666246] [2021-12-21 18:12:49,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:12:49,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:12:49,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:12:49,767 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:12:49,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-21 18:12:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:12:49,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-21 18:12:49,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:12:50,214 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 18:12:50,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2021-12-21 18:12:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:12:52,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:12:52,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:12:52,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905666246] [2021-12-21 18:12:52,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905666246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:12:52,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:12:52,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 18:12:52,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595104341] [2021-12-21 18:12:52,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:12:52,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 18:12:52,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:12:52,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 18:12:52,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=110, Unknown=1, NotChecked=0, Total=132 [2021-12-21 18:12:52,632 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:52,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:12:52,645 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2021-12-21 18:12:52,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 18:12:52,645 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-21 18:12:52,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:12:52,646 INFO L225 Difference]: With dead ends: 25 [2021-12-21 18:12:52,646 INFO L226 Difference]: Without dead ends: 0 [2021-12-21 18:12:52,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=21, Invalid=110, Unknown=1, NotChecked=0, Total=132 [2021-12-21 18:12:52,647 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:12:52,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 43 Unchecked, 0.0s Time] [2021-12-21 18:12:52,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-21 18:12:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-21 18:12:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:12:52,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-21 18:12:52,648 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-12-21 18:12:52,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:12:52,648 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 18:12:52,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 18:12:52,648 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-21 18:12:52,648 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-21 18:12:52,650 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (10 of 11 remaining) [2021-12-21 18:12:52,653 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (9 of 11 remaining) [2021-12-21 18:12:52,653 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (8 of 11 remaining) [2021-12-21 18:12:52,653 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (7 of 11 remaining) [2021-12-21 18:12:52,654 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (6 of 11 remaining) [2021-12-21 18:12:52,654 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION (5 of 11 remaining) [2021-12-21 18:12:52,654 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION (4 of 11 remaining) [2021-12-21 18:12:52,654 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE (3 of 11 remaining) [2021-12-21 18:12:52,654 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (2 of 11 remaining) [2021-12-21 18:12:52,654 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (1 of 11 remaining) [2021-12-21 18:12:52,655 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2021-12-21 18:12:52,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-21 18:12:52,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:12:52,866 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:12:52,867 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 18:12:52,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 06:12:52 BoogieIcfgContainer [2021-12-21 18:12:52,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 18:12:52,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 18:12:52,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 18:12:52,871 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 18:12:52,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:12:34" (3/4) ... [2021-12-21 18:12:52,878 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-21 18:12:52,884 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2021-12-21 18:12:52,890 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-12-21 18:12:52,891 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-21 18:12:52,891 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-21 18:12:52,925 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 18:12:52,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 18:12:52,926 INFO L158 Benchmark]: Toolchain (without parser) took 19145.48ms. Allocated memory was 54.5MB in the beginning and 88.1MB in the end (delta: 33.6MB). Free memory was 32.6MB in the beginning and 60.5MB in the end (delta: -27.9MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2021-12-21 18:12:52,926 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 54.5MB. Free memory was 37.2MB in the beginning and 37.2MB in the end (delta: 50.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 18:12:52,930 INFO L158 Benchmark]: CACSL2BoogieTranslator took 622.74ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 32.4MB in the beginning and 38.8MB in the end (delta: -6.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-21 18:12:52,931 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.88ms. Allocated memory is still 73.4MB. Free memory was 38.8MB in the beginning and 54.4MB in the end (delta: -15.5MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2021-12-21 18:12:52,931 INFO L158 Benchmark]: Boogie Preprocessor took 25.45ms. Allocated memory is still 73.4MB. Free memory was 54.4MB in the beginning and 53.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 18:12:52,931 INFO L158 Benchmark]: RCFGBuilder took 461.04ms. Allocated memory is still 73.4MB. Free memory was 52.7MB in the beginning and 40.4MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-21 18:12:52,932 INFO L158 Benchmark]: TraceAbstraction took 17923.49ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 40.1MB in the beginning and 63.8MB in the end (delta: -23.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 18:12:52,932 INFO L158 Benchmark]: Witness Printer took 54.54ms. Allocated memory is still 88.1MB. Free memory was 63.8MB in the beginning and 60.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 18:12:52,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 54.5MB. Free memory was 37.2MB in the beginning and 37.2MB in the end (delta: 50.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 622.74ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 32.4MB in the beginning and 38.8MB in the end (delta: -6.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.88ms. Allocated memory is still 73.4MB. Free memory was 38.8MB in the beginning and 54.4MB in the end (delta: -15.5MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.45ms. Allocated memory is still 73.4MB. Free memory was 54.4MB in the beginning and 53.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 461.04ms. Allocated memory is still 73.4MB. Free memory was 52.7MB in the beginning and 40.4MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 17923.49ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 40.1MB in the beginning and 63.8MB in the end (delta: -23.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 54.54ms. Allocated memory is still 88.1MB. Free memory was 63.8MB in the beginning and 60.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 774]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 774]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 781]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 790]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 41 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 17.8s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 458 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 454 mSDsluCounter, 2005 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 145 IncrementalHoareTripleChecker+Unchecked, 1425 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 533 IncrementalHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 580 mSDtfsCounter, 533 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 295 GetRequests, 196 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, InterpolantAutomatonStates: 118, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 97 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 295 NumberOfCodeBlocks, 295 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 277 ConstructedInterpolants, 48 QuantifiedInterpolants, 2182 SizeOfPredicates, 75 NumberOfNonLiveVariables, 1175 ConjunctsInSsa, 176 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-21 18:12:52,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE